From d505adfa38b914fc5e36bf6154757c3019759330 Mon Sep 17 00:00:00 2001 From: Raymond Hill Date: Sun, 31 Mar 2019 00:31:29 -0300 Subject: [PATCH] Upgrade CodeMirror to 5.45 --- src/lib/codemirror/README.md | 1 - src/lib/codemirror/lib/codemirror.js | 18921 +++++++++++++------------ 2 files changed, 9484 insertions(+), 9438 deletions(-) diff --git a/src/lib/codemirror/README.md b/src/lib/codemirror/README.md index 8bc6c936b..2a7b1f5eb 100644 --- a/src/lib/codemirror/README.md +++ b/src/lib/codemirror/README.md @@ -3,7 +3,6 @@ [![Build Status](https://travis-ci.org/codemirror/CodeMirror.svg)](https://travis-ci.org/codemirror/CodeMirror) [![NPM version](https://img.shields.io/npm/v/codemirror.svg)](https://www.npmjs.org/package/codemirror) [![Join the chat at https://gitter.im/codemirror/CodeMirror](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/codemirror/CodeMirror) -[Funding status: ![maintainer happiness](https://marijnhaverbeke.nl/fund/status_s.png?again)](https://marijnhaverbeke.nl/fund/) CodeMirror is a versatile text editor implemented in JavaScript for the browser. It is specialized for editing code, and comes with over diff --git a/src/lib/codemirror/lib/codemirror.js b/src/lib/codemirror/lib/codemirror.js index e178478d2..7068664c1 100644 --- a/src/lib/codemirror/lib/codemirror.js +++ b/src/lib/codemirror/lib/codemirror.js @@ -13,9681 +13,9728 @@ (global.CodeMirror = factory()); }(this, (function () { 'use strict'; -// Kludges for bugs and behavior differences that can't be feature -// detected are enabled based on userAgent etc sniffing. -var userAgent = navigator.userAgent -var platform = navigator.platform + // Kludges for bugs and behavior differences that can't be feature + // detected are enabled based on userAgent etc sniffing. + var userAgent = navigator.userAgent; + var platform = navigator.platform; -var gecko = /gecko\/\d/i.test(userAgent) -var ie_upto10 = /MSIE \d/.test(userAgent) -var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(userAgent) -var edge = /Edge\/(\d+)/.exec(userAgent) -var ie = ie_upto10 || ie_11up || edge -var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : +(edge || ie_11up)[1]) -var webkit = !edge && /WebKit\//.test(userAgent) -var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent) -var chrome = !edge && /Chrome\//.test(userAgent) -var presto = /Opera\//.test(userAgent) -var safari = /Apple Computer/.test(navigator.vendor) -var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(userAgent) -var phantom = /PhantomJS/.test(userAgent) + var gecko = /gecko\/\d/i.test(userAgent); + var ie_upto10 = /MSIE \d/.test(userAgent); + var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(userAgent); + var edge = /Edge\/(\d+)/.exec(userAgent); + var ie = ie_upto10 || ie_11up || edge; + var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : +(edge || ie_11up)[1]); + var webkit = !edge && /WebKit\//.test(userAgent); + var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(userAgent); + var chrome = !edge && /Chrome\//.test(userAgent); + var presto = /Opera\//.test(userAgent); + var safari = /Apple Computer/.test(navigator.vendor); + var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(userAgent); + var phantom = /PhantomJS/.test(userAgent); -var ios = !edge && /AppleWebKit/.test(userAgent) && /Mobile\/\w+/.test(userAgent) -var android = /Android/.test(userAgent) -// This is woefully incomplete. Suggestions for alternative methods welcome. -var mobile = ios || android || /webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent) -var mac = ios || /Mac/.test(platform) -var chromeOS = /\bCrOS\b/.test(userAgent) -var windows = /win/i.test(platform) + var ios = !edge && /AppleWebKit/.test(userAgent) && /Mobile\/\w+/.test(userAgent); + var android = /Android/.test(userAgent); + // This is woefully incomplete. Suggestions for alternative methods welcome. + var mobile = ios || android || /webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(userAgent); + var mac = ios || /Mac/.test(platform); + var chromeOS = /\bCrOS\b/.test(userAgent); + var windows = /win/i.test(platform); -var presto_version = presto && userAgent.match(/Version\/(\d*\.\d*)/) -if (presto_version) { presto_version = Number(presto_version[1]) } -if (presto_version && presto_version >= 15) { presto = false; webkit = true } -// Some browsers use the wrong event properties to signal cmd/ctrl on OS X -var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11)) -var captureRightClick = gecko || (ie && ie_version >= 9) + var presto_version = presto && userAgent.match(/Version\/(\d*\.\d*)/); + if (presto_version) { presto_version = Number(presto_version[1]); } + if (presto_version && presto_version >= 15) { presto = false; webkit = true; } + // Some browsers use the wrong event properties to signal cmd/ctrl on OS X + var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11)); + var captureRightClick = gecko || (ie && ie_version >= 9); -function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*") } + function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*") } -var rmClass = function(node, cls) { - var current = node.className - var match = classTest(cls).exec(current) - if (match) { - var after = current.slice(match.index + match[0].length) - node.className = current.slice(0, match.index) + (after ? match[1] + after : "") - } -} - -function removeChildren(e) { - for (var count = e.childNodes.length; count > 0; --count) - { e.removeChild(e.firstChild) } - return e -} - -function removeChildrenAndAdd(parent, e) { - return removeChildren(parent).appendChild(e) -} - -function elt(tag, content, className, style) { - var e = document.createElement(tag) - if (className) { e.className = className } - if (style) { e.style.cssText = style } - if (typeof content == "string") { e.appendChild(document.createTextNode(content)) } - else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]) } } - return e -} -// wrapper for elt, which removes the elt from the accessibility tree -function eltP(tag, content, className, style) { - var e = elt(tag, content, className, style) - e.setAttribute("role", "presentation") - return e -} - -var range -if (document.createRange) { range = function(node, start, end, endNode) { - var r = document.createRange() - r.setEnd(endNode || node, end) - r.setStart(node, start) - return r -} } -else { range = function(node, start, end) { - var r = document.body.createTextRange() - try { r.moveToElementText(node.parentNode) } - catch(e) { return r } - r.collapse(true) - r.moveEnd("character", end) - r.moveStart("character", start) - return r -} } - -function contains(parent, child) { - if (child.nodeType == 3) // Android browser always returns false when child is a textnode - { child = child.parentNode } - if (parent.contains) - { return parent.contains(child) } - do { - if (child.nodeType == 11) { child = child.host } - if (child == parent) { return true } - } while (child = child.parentNode) -} - -function activeElt() { - // IE and Edge may throw an "Unspecified Error" when accessing document.activeElement. - // IE < 10 will throw when accessed while the page is loading or in an iframe. - // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable. - var activeElement - try { - activeElement = document.activeElement - } catch(e) { - activeElement = document.body || null - } - while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement) - { activeElement = activeElement.shadowRoot.activeElement } - return activeElement -} - -function addClass(node, cls) { - var current = node.className - if (!classTest(cls).test(current)) { node.className += (current ? " " : "") + cls } -} -function joinClasses(a, b) { - var as = a.split(" ") - for (var i = 0; i < as.length; i++) - { if (as[i] && !classTest(as[i]).test(b)) { b += " " + as[i] } } - return b -} - -var selectInput = function(node) { node.select() } -if (ios) // Mobile Safari apparently has a bug where select() is broken. - { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length } } -else if (ie) // Suppress mysterious IE10 errors - { selectInput = function(node) { try { node.select() } catch(_e) {} } } - -function bind(f) { - var args = Array.prototype.slice.call(arguments, 1) - return function(){return f.apply(null, args)} -} - -function copyObj(obj, target, overwrite) { - if (!target) { target = {} } - for (var prop in obj) - { if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop))) - { target[prop] = obj[prop] } } - return target -} - -// Counts the column offset in a string, taking tabs into account. -// Used mostly to find indentation. -function countColumn(string, end, tabSize, startIndex, startValue) { - if (end == null) { - end = string.search(/[^\s\u00a0]/) - if (end == -1) { end = string.length } - } - for (var i = startIndex || 0, n = startValue || 0;;) { - var nextTab = string.indexOf("\t", i) - if (nextTab < 0 || nextTab >= end) - { return n + (end - i) } - n += nextTab - i - n += tabSize - (n % tabSize) - i = nextTab + 1 - } -} - -var Delayed = function() {this.id = null}; -Delayed.prototype.set = function (ms, f) { - clearTimeout(this.id) - this.id = setTimeout(f, ms) -}; - -function indexOf(array, elt) { - for (var i = 0; i < array.length; ++i) - { if (array[i] == elt) { return i } } - return -1 -} - -// Number of pixels added to scroller and sizer to hide scrollbar -var scrollerGap = 30 - -// Returned or thrown by various protocols to signal 'I'm not -// handling this'. -var Pass = {toString: function(){return "CodeMirror.Pass"}} - -// Reused option objects for setSelection & friends -var sel_dontScroll = {scroll: false}; -var sel_mouse = {origin: "*mouse"}; -var sel_move = {origin: "+move"}; -// The inverse of countColumn -- find the offset that corresponds to -// a particular column. -function findColumn(string, goal, tabSize) { - for (var pos = 0, col = 0;;) { - var nextTab = string.indexOf("\t", pos) - if (nextTab == -1) { nextTab = string.length } - var skipped = nextTab - pos - if (nextTab == string.length || col + skipped >= goal) - { return pos + Math.min(skipped, goal - col) } - col += nextTab - pos - col += tabSize - (col % tabSize) - pos = nextTab + 1 - if (col >= goal) { return pos } - } -} - -var spaceStrs = [""] -function spaceStr(n) { - while (spaceStrs.length <= n) - { spaceStrs.push(lst(spaceStrs) + " ") } - return spaceStrs[n] -} - -function lst(arr) { return arr[arr.length-1] } - -function map(array, f) { - var out = [] - for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i) } - return out -} - -function insertSorted(array, value, score) { - var pos = 0, priority = score(value) - while (pos < array.length && score(array[pos]) <= priority) { pos++ } - array.splice(pos, 0, value) -} - -function nothing() {} - -function createObj(base, props) { - var inst - if (Object.create) { - inst = Object.create(base) - } else { - nothing.prototype = base - inst = new nothing() - } - if (props) { copyObj(props, inst) } - return inst -} - -var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/ -function isWordCharBasic(ch) { - return /\w/.test(ch) || ch > "\x80" && - (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)) -} -function isWordChar(ch, helper) { - if (!helper) { return isWordCharBasic(ch) } - if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) { return true } - return helper.test(ch) -} - -function isEmpty(obj) { - for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } } - return true -} - -// Extending unicode characters. A series of a non-extending char + -// any number of extending chars is treated as a single unit as far -// as editing and measuring is concerned. This is not fully correct, -// since some scripts/fonts/browsers also treat other configurations -// of code points as a group. -var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/ -function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) } - -// Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range. -function skipExtendingChars(str, pos, dir) { - while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) { pos += dir } - return pos -} - -// Returns the value from the range [`from`; `to`] that satisfies -// `pred` and is closest to `from`. Assumes that at least `to` -// satisfies `pred`. Supports `from` being greater than `to`. -function findFirst(pred, from, to) { - // At any point we are certain `to` satisfies `pred`, don't know - // whether `from` does. - var dir = from > to ? -1 : 1 - for (;;) { - if (from == to) { return from } - var midF = (from + to) / 2, mid = dir < 0 ? Math.ceil(midF) : Math.floor(midF) - if (mid == from) { return pred(mid) ? from : to } - if (pred(mid)) { to = mid } - else { from = mid + dir } - } -} - -// The display handles the DOM integration, both for input reading -// and content drawing. It holds references to DOM nodes and -// display-related state. - -function Display(place, doc, input) { - var d = this - this.input = input - - // Covers bottom-right square when both scrollbars are present. - d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler") - d.scrollbarFiller.setAttribute("cm-not-content", "true") - // Covers bottom of gutter when coverGutterNextToScrollbar is on - // and h scrollbar is present. - d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler") - d.gutterFiller.setAttribute("cm-not-content", "true") - // Will contain the actual code, positioned to cover the viewport. - d.lineDiv = eltP("div", null, "CodeMirror-code") - // Elements are added to these to represent selection and cursors. - d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1") - d.cursorDiv = elt("div", null, "CodeMirror-cursors") - // A visibility: hidden element used to find the size of things. - d.measure = elt("div", null, "CodeMirror-measure") - // When lines outside of the viewport are measured, they are drawn in this. - d.lineMeasure = elt("div", null, "CodeMirror-measure") - // Wraps everything that needs to exist inside the vertically-padded coordinate system - d.lineSpace = eltP("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv], - null, "position: relative; outline: none") - var lines = eltP("div", [d.lineSpace], "CodeMirror-lines") - // Moved around its parent to cover visible view. - d.mover = elt("div", [lines], null, "position: relative") - // Set to the height of the document, allowing scrolling. - d.sizer = elt("div", [d.mover], "CodeMirror-sizer") - d.sizerWidth = null - // Behavior of elts with overflow: auto and padding is - // inconsistent across browsers. This is used to ensure the - // scrollable area is big enough. - d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;") - // Will contain the gutters, if any. - d.gutters = elt("div", null, "CodeMirror-gutters") - d.lineGutter = null - // Actual scrollable element. - d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll") - d.scroller.setAttribute("tabIndex", "-1") - // The element in which the editor lives. - d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror") - - // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported) - if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0 } - if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true } - - if (place) { - if (place.appendChild) { place.appendChild(d.wrapper) } - else { place(d.wrapper) } - } - - // Current rendered range (may be bigger than the view window). - d.viewFrom = d.viewTo = doc.first - d.reportedViewFrom = d.reportedViewTo = doc.first - // Information about the rendered lines. - d.view = [] - d.renderedView = null - // Holds info about a single rendered line when it was rendered - // for measurement, while not in view. - d.externalMeasured = null - // Empty space (in pixels) above the view - d.viewOffset = 0 - d.lastWrapHeight = d.lastWrapWidth = 0 - d.updateLineNumbers = null - - d.nativeBarWidth = d.barHeight = d.barWidth = 0 - d.scrollbarsClipped = false - - // Used to only resize the line number gutter when necessary (when - // the amount of lines crosses a boundary that makes its width change) - d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null - // Set to true when a non-horizontal-scrolling line widget is - // added. As an optimization, line widget aligning is skipped when - // this is false. - d.alignWidgets = false - - d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null - - // Tracks the maximum line length so that the horizontal scrollbar - // can be kept static when scrolling. - d.maxLine = null - d.maxLineLength = 0 - d.maxLineChanged = false - - // Used for measuring wheel scrolling granularity - d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null - - // True when shift is held down. - d.shift = false - - // Used to track whether anything happened since the context menu - // was opened. - d.selForContextMenu = null - - d.activeTouch = null - - input.init(d) -} - -// Find the line object corresponding to the given line number. -function getLine(doc, n) { - n -= doc.first - if (n < 0 || n >= doc.size) { throw new Error("There is no line " + (n + doc.first) + " in the document.") } - var chunk = doc - while (!chunk.lines) { - for (var i = 0;; ++i) { - var child = chunk.children[i], sz = child.chunkSize() - if (n < sz) { chunk = child; break } - n -= sz + var rmClass = function(node, cls) { + var current = node.className; + var match = classTest(cls).exec(current); + if (match) { + var after = current.slice(match.index + match[0].length); + node.className = current.slice(0, match.index) + (after ? match[1] + after : ""); } - } - return chunk.lines[n] -} - -// Get the part of a document between two positions, as an array of -// strings. -function getBetween(doc, start, end) { - var out = [], n = start.line - doc.iter(start.line, end.line + 1, function (line) { - var text = line.text - if (n == end.line) { text = text.slice(0, end.ch) } - if (n == start.line) { text = text.slice(start.ch) } - out.push(text) - ++n - }) - return out -} -// Get the lines between from and to, as array of strings. -function getLines(doc, from, to) { - var out = [] - doc.iter(from, to, function (line) { out.push(line.text) }) // iter aborts when callback returns truthy value - return out -} - -// Update the height of a line, propagating the height change -// upwards to parent nodes. -function updateLineHeight(line, height) { - var diff = height - line.height - if (diff) { for (var n = line; n; n = n.parent) { n.height += diff } } -} - -// Given a line object, find its line number by walking up through -// its parent links. -function lineNo(line) { - if (line.parent == null) { return null } - var cur = line.parent, no = indexOf(cur.lines, line) - for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { - for (var i = 0;; ++i) { - if (chunk.children[i] == cur) { break } - no += chunk.children[i].chunkSize() - } - } - return no + cur.first -} - -// Find the line at the given vertical position, using the height -// information in the document tree. -function lineAtHeight(chunk, h) { - var n = chunk.first - outer: do { - for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) { - var child = chunk.children[i$1], ch = child.height - if (h < ch) { chunk = child; continue outer } - h -= ch - n += child.chunkSize() - } - return n - } while (!chunk.lines) - var i = 0 - for (; i < chunk.lines.length; ++i) { - var line = chunk.lines[i], lh = line.height - if (h < lh) { break } - h -= lh - } - return n + i -} - -function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size} - -function lineNumberFor(options, i) { - return String(options.lineNumberFormatter(i + options.firstLineNumber)) -} - -// A Pos instance represents a position within the text. -function Pos(line, ch, sticky) { - if ( sticky === void 0 ) sticky = null; - - if (!(this instanceof Pos)) { return new Pos(line, ch, sticky) } - this.line = line - this.ch = ch - this.sticky = sticky -} - -// Compare two positions, return 0 if they are the same, a negative -// number when a is less, and a positive number otherwise. -function cmp(a, b) { return a.line - b.line || a.ch - b.ch } - -function equalCursorPos(a, b) { return a.sticky == b.sticky && cmp(a, b) == 0 } - -function copyPos(x) {return Pos(x.line, x.ch)} -function maxPos(a, b) { return cmp(a, b) < 0 ? b : a } -function minPos(a, b) { return cmp(a, b) < 0 ? a : b } - -// Most of the external API clips given positions to make sure they -// actually exist within the document. -function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))} -function clipPos(doc, pos) { - if (pos.line < doc.first) { return Pos(doc.first, 0) } - var last = doc.first + doc.size - 1 - if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) } - return clipToLen(pos, getLine(doc, pos.line).text.length) -} -function clipToLen(pos, linelen) { - var ch = pos.ch - if (ch == null || ch > linelen) { return Pos(pos.line, linelen) } - else if (ch < 0) { return Pos(pos.line, 0) } - else { return pos } -} -function clipPosArray(doc, array) { - var out = [] - for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]) } - return out -} - -// Optimize some code when these features are not used. -var sawReadOnlySpans = false; -var sawCollapsedSpans = false; -function seeReadOnlySpans() { - sawReadOnlySpans = true -} - -function seeCollapsedSpans() { - sawCollapsedSpans = true -} - -// TEXTMARKER SPANS - -function MarkedSpan(marker, from, to) { - this.marker = marker - this.from = from; this.to = to -} - -// Search an array of spans for a span matching the given marker. -function getMarkedSpanFor(spans, marker) { - if (spans) { for (var i = 0; i < spans.length; ++i) { - var span = spans[i] - if (span.marker == marker) { return span } - } } -} -// Remove a span from an array, returning undefined if no spans are -// left (we don't store arrays for lines without spans). -function removeMarkedSpan(spans, span) { - var r - for (var i = 0; i < spans.length; ++i) - { if (spans[i] != span) { (r || (r = [])).push(spans[i]) } } - return r -} -// Add a span to a line. -function addMarkedSpan(line, span) { - line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span] - span.marker.attachLine(line) -} - -// Used for the algorithm that adjusts markers for a change in the -// document. These functions cut an array of spans at a given -// character position, returning an array of remaining chunks (or -// undefined if nothing remains). -function markedSpansBefore(old, startCh, isInsert) { - var nw - if (old) { for (var i = 0; i < old.length; ++i) { - var span = old[i], marker = span.marker - var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh) - if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) { - var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh) - ;(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to)) - } - } } - return nw -} -function markedSpansAfter(old, endCh, isInsert) { - var nw - if (old) { for (var i = 0; i < old.length; ++i) { - var span = old[i], marker = span.marker - var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh) - if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) { - var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh) - ;(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh, - span.to == null ? null : span.to - endCh)) - } - } } - return nw -} - -// Given a change object, compute the new set of marker spans that -// cover the line in which the change took place. Removes spans -// entirely within the change, reconnects spans belonging to the -// same marker that appear on both sides of the change, and cuts off -// spans partially within the change. Returns an array of span -// arrays with one element for each line in (after) the change. -function stretchSpansOverChange(doc, change) { - if (change.full) { return null } - var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans - var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans - if (!oldFirst && !oldLast) { return null } - - var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0 - // Get the spans that 'stick out' on both sides - var first = markedSpansBefore(oldFirst, startCh, isInsert) - var last = markedSpansAfter(oldLast, endCh, isInsert) - - // Next, merge those two ends - var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0) - if (first) { - // Fix up .to properties of first - for (var i = 0; i < first.length; ++i) { - var span = first[i] - if (span.to == null) { - var found = getMarkedSpanFor(last, span.marker) - if (!found) { span.to = startCh } - else if (sameLine) { span.to = found.to == null ? null : found.to + offset } - } - } - } - if (last) { - // Fix up .from in last (or move them into first in case of sameLine) - for (var i$1 = 0; i$1 < last.length; ++i$1) { - var span$1 = last[i$1] - if (span$1.to != null) { span$1.to += offset } - if (span$1.from == null) { - var found$1 = getMarkedSpanFor(first, span$1.marker) - if (!found$1) { - span$1.from = offset - if (sameLine) { (first || (first = [])).push(span$1) } - } - } else { - span$1.from += offset - if (sameLine) { (first || (first = [])).push(span$1) } - } - } - } - // Make sure we didn't create any zero-length spans - if (first) { first = clearEmptySpans(first) } - if (last && last != first) { last = clearEmptySpans(last) } - - var newMarkers = [first] - if (!sameLine) { - // Fill gap with whole-line-spans - var gap = change.text.length - 2, gapMarkers - if (gap > 0 && first) - { for (var i$2 = 0; i$2 < first.length; ++i$2) - { if (first[i$2].to == null) - { (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)) } } } - for (var i$3 = 0; i$3 < gap; ++i$3) - { newMarkers.push(gapMarkers) } - newMarkers.push(last) - } - return newMarkers -} - -// Remove spans that are empty and don't have a clearWhenEmpty -// option of false. -function clearEmptySpans(spans) { - for (var i = 0; i < spans.length; ++i) { - var span = spans[i] - if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false) - { spans.splice(i--, 1) } - } - if (!spans.length) { return null } - return spans -} - -// Used to 'clip' out readOnly ranges when making a change. -function removeReadOnlyRanges(doc, from, to) { - var markers = null - doc.iter(from.line, to.line + 1, function (line) { - if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) { - var mark = line.markedSpans[i].marker - if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) - { (markers || (markers = [])).push(mark) } - } } - }) - if (!markers) { return null } - var parts = [{from: from, to: to}] - for (var i = 0; i < markers.length; ++i) { - var mk = markers[i], m = mk.find(0) - for (var j = 0; j < parts.length; ++j) { - var p = parts[j] - if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) { continue } - var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to) - if (dfrom < 0 || !mk.inclusiveLeft && !dfrom) - { newParts.push({from: p.from, to: m.from}) } - if (dto > 0 || !mk.inclusiveRight && !dto) - { newParts.push({from: m.to, to: p.to}) } - parts.splice.apply(parts, newParts) - j += newParts.length - 3 - } - } - return parts -} - -// Connect or disconnect spans from a line. -function detachMarkedSpans(line) { - var spans = line.markedSpans - if (!spans) { return } - for (var i = 0; i < spans.length; ++i) - { spans[i].marker.detachLine(line) } - line.markedSpans = null -} -function attachMarkedSpans(line, spans) { - if (!spans) { return } - for (var i = 0; i < spans.length; ++i) - { spans[i].marker.attachLine(line) } - line.markedSpans = spans -} - -// Helpers used when computing which overlapping collapsed span -// counts as the larger one. -function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 } -function extraRight(marker) { return marker.inclusiveRight ? 1 : 0 } - -// Returns a number indicating which of two overlapping collapsed -// spans is larger (and thus includes the other). Falls back to -// comparing ids when the spans cover exactly the same range. -function compareCollapsedMarkers(a, b) { - var lenDiff = a.lines.length - b.lines.length - if (lenDiff != 0) { return lenDiff } - var aPos = a.find(), bPos = b.find() - var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b) - if (fromCmp) { return -fromCmp } - var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b) - if (toCmp) { return toCmp } - return b.id - a.id -} - -// Find out whether a line ends or starts in a collapsed span. If -// so, return the marker for that span. -function collapsedSpanAtSide(line, start) { - var sps = sawCollapsedSpans && line.markedSpans, found - if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) { - sp = sps[i] - if (sp.marker.collapsed && (start ? sp.from : sp.to) == null && - (!found || compareCollapsedMarkers(found, sp.marker) < 0)) - { found = sp.marker } - } } - return found -} -function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) } -function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) } - -function collapsedSpanAround(line, ch) { - var sps = sawCollapsedSpans && line.markedSpans, found - if (sps) { for (var i = 0; i < sps.length; ++i) { - var sp = sps[i] - if (sp.marker.collapsed && (sp.from == null || sp.from < ch) && (sp.to == null || sp.to > ch) && - (!found || compareCollapsedMarkers(found, sp.marker) < 0)) { found = sp.marker } - } } - return found -} - -// Test whether there exists a collapsed span that partially -// overlaps (covers the start or end, but not both) of a new span. -// Such overlap is not allowed. -function conflictingCollapsedRange(doc, lineNo, from, to, marker) { - var line = getLine(doc, lineNo) - var sps = sawCollapsedSpans && line.markedSpans - if (sps) { for (var i = 0; i < sps.length; ++i) { - var sp = sps[i] - if (!sp.marker.collapsed) { continue } - var found = sp.marker.find(0) - var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker) - var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker) - if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) { continue } - if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) || - fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0)) - { return true } - } } -} - -// A visual line is a line as drawn on the screen. Folding, for -// example, can cause multiple logical lines to appear on the same -// visual line. This finds the start of the visual line that the -// given line is part of (usually that is the line itself). -function visualLine(line) { - var merged - while (merged = collapsedSpanAtStart(line)) - { line = merged.find(-1, true).line } - return line -} - -function visualLineEnd(line) { - var merged - while (merged = collapsedSpanAtEnd(line)) - { line = merged.find(1, true).line } - return line -} - -// Returns an array of logical lines that continue the visual line -// started by the argument, or undefined if there are no such lines. -function visualLineContinued(line) { - var merged, lines - while (merged = collapsedSpanAtEnd(line)) { - line = merged.find(1, true).line - ;(lines || (lines = [])).push(line) - } - return lines -} - -// Get the line number of the start of the visual line that the -// given line number is part of. -function visualLineNo(doc, lineN) { - var line = getLine(doc, lineN), vis = visualLine(line) - if (line == vis) { return lineN } - return lineNo(vis) -} - -// Get the line number of the start of the next visual line after -// the given line. -function visualLineEndNo(doc, lineN) { - if (lineN > doc.lastLine()) { return lineN } - var line = getLine(doc, lineN), merged - if (!lineIsHidden(doc, line)) { return lineN } - while (merged = collapsedSpanAtEnd(line)) - { line = merged.find(1, true).line } - return lineNo(line) + 1 -} - -// Compute whether a line is hidden. Lines count as hidden when they -// are part of a visual line that starts with another line, or when -// they are entirely covered by collapsed, non-widget span. -function lineIsHidden(doc, line) { - var sps = sawCollapsedSpans && line.markedSpans - if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) { - sp = sps[i] - if (!sp.marker.collapsed) { continue } - if (sp.from == null) { return true } - if (sp.marker.widgetNode) { continue } - if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) - { return true } - } } -} -function lineIsHiddenInner(doc, line, span) { - if (span.to == null) { - var end = span.marker.find(1, true) - return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker)) - } - if (span.marker.inclusiveRight && span.to == line.text.length) - { return true } - for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) { - sp = line.markedSpans[i] - if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to && - (sp.to == null || sp.to != span.from) && - (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && - lineIsHiddenInner(doc, line, sp)) { return true } - } -} - -// Find the height above the given line. -function heightAtLine(lineObj) { - lineObj = visualLine(lineObj) - - var h = 0, chunk = lineObj.parent - for (var i = 0; i < chunk.lines.length; ++i) { - var line = chunk.lines[i] - if (line == lineObj) { break } - else { h += line.height } - } - for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { - for (var i$1 = 0; i$1 < p.children.length; ++i$1) { - var cur = p.children[i$1] - if (cur == chunk) { break } - else { h += cur.height } - } - } - return h -} - -// Compute the character length of a line, taking into account -// collapsed ranges (see markText) that might hide parts, and join -// other lines onto it. -function lineLength(line) { - if (line.height == 0) { return 0 } - var len = line.text.length, merged, cur = line - while (merged = collapsedSpanAtStart(cur)) { - var found = merged.find(0, true) - cur = found.from.line - len += found.from.ch - found.to.ch - } - cur = line - while (merged = collapsedSpanAtEnd(cur)) { - var found$1 = merged.find(0, true) - len -= cur.text.length - found$1.from.ch - cur = found$1.to.line - len += cur.text.length - found$1.to.ch - } - return len -} - -// Find the longest line in the document. -function findMaxLine(cm) { - var d = cm.display, doc = cm.doc - d.maxLine = getLine(doc, doc.first) - d.maxLineLength = lineLength(d.maxLine) - d.maxLineChanged = true - doc.iter(function (line) { - var len = lineLength(line) - if (len > d.maxLineLength) { - d.maxLineLength = len - d.maxLine = line - } - }) -} - -// BIDI HELPERS - -function iterateBidiSections(order, from, to, f) { - if (!order) { return f(from, to, "ltr", 0) } - var found = false - for (var i = 0; i < order.length; ++i) { - var part = order[i] - if (part.from < to && part.to > from || from == to && part.to == from) { - f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr", i) - found = true - } - } - if (!found) { f(from, to, "ltr") } -} - -var bidiOther = null -function getBidiPartAt(order, ch, sticky) { - var found - bidiOther = null - for (var i = 0; i < order.length; ++i) { - var cur = order[i] - if (cur.from < ch && cur.to > ch) { return i } - if (cur.to == ch) { - if (cur.from != cur.to && sticky == "before") { found = i } - else { bidiOther = i } - } - if (cur.from == ch) { - if (cur.from != cur.to && sticky != "before") { found = i } - else { bidiOther = i } - } - } - return found != null ? found : bidiOther -} - -// Bidirectional ordering algorithm -// See http://unicode.org/reports/tr9/tr9-13.html for the algorithm -// that this (partially) implements. - -// One-char codes used for character types: -// L (L): Left-to-Right -// R (R): Right-to-Left -// r (AL): Right-to-Left Arabic -// 1 (EN): European Number -// + (ES): European Number Separator -// % (ET): European Number Terminator -// n (AN): Arabic Number -// , (CS): Common Number Separator -// m (NSM): Non-Spacing Mark -// b (BN): Boundary Neutral -// s (B): Paragraph Separator -// t (S): Segment Separator -// w (WS): Whitespace -// N (ON): Other Neutrals - -// Returns null if characters are ordered as they appear -// (left-to-right), or an array of sections ({from, to, level} -// objects) in the order in which they occur visually. -var bidiOrdering = (function() { - // Character types for codepoints 0 to 0xff - var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN" - // Character types for codepoints 0x600 to 0x6f9 - var arabicTypes = "nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111" - function charType(code) { - if (code <= 0xf7) { return lowTypes.charAt(code) } - else if (0x590 <= code && code <= 0x5f4) { return "R" } - else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) } - else if (0x6ee <= code && code <= 0x8ac) { return "r" } - else if (0x2000 <= code && code <= 0x200b) { return "w" } - else if (code == 0x200c) { return "b" } - else { return "L" } - } - - var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/ - var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/ - - function BidiSpan(level, from, to) { - this.level = level - this.from = from; this.to = to - } - - return function(str, direction) { - var outerType = direction == "ltr" ? "L" : "R" - - if (str.length == 0 || direction == "ltr" && !bidiRE.test(str)) { return false } - var len = str.length, types = [] - for (var i = 0; i < len; ++i) - { types.push(charType(str.charCodeAt(i))) } - - // W1. Examine each non-spacing mark (NSM) in the level run, and - // change the type of the NSM to the type of the previous - // character. If the NSM is at the start of the level run, it will - // get the type of sor. - for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) { - var type = types[i$1] - if (type == "m") { types[i$1] = prev } - else { prev = type } - } - - // W2. Search backwards from each instance of a European number - // until the first strong type (R, L, AL, or sor) is found. If an - // AL is found, change the type of the European number to Arabic - // number. - // W3. Change all ALs to R. - for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) { - var type$1 = types[i$2] - if (type$1 == "1" && cur == "r") { types[i$2] = "n" } - else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == "r") { types[i$2] = "R" } } - } - - // W4. A single European separator between two European numbers - // changes to a European number. A single common separator between - // two numbers of the same type changes to that type. - for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) { - var type$2 = types[i$3] - if (type$2 == "+" && prev$1 == "1" && types[i$3+1] == "1") { types[i$3] = "1" } - else if (type$2 == "," && prev$1 == types[i$3+1] && - (prev$1 == "1" || prev$1 == "n")) { types[i$3] = prev$1 } - prev$1 = type$2 - } - - // W5. A sequence of European terminators adjacent to European - // numbers changes to all European numbers. - // W6. Otherwise, separators and terminators change to Other - // Neutral. - for (var i$4 = 0; i$4 < len; ++i$4) { - var type$3 = types[i$4] - if (type$3 == ",") { types[i$4] = "N" } - else if (type$3 == "%") { - var end = (void 0) - for (end = i$4 + 1; end < len && types[end] == "%"; ++end) {} - var replace = (i$4 && types[i$4-1] == "!") || (end < len && types[end] == "1") ? "1" : "N" - for (var j = i$4; j < end; ++j) { types[j] = replace } - i$4 = end - 1 - } - } - - // W7. Search backwards from each instance of a European number - // until the first strong type (R, L, or sor) is found. If an L is - // found, then change the type of the European number to L. - for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) { - var type$4 = types[i$5] - if (cur$1 == "L" && type$4 == "1") { types[i$5] = "L" } - else if (isStrong.test(type$4)) { cur$1 = type$4 } - } - - // N1. A sequence of neutrals takes the direction of the - // surrounding strong text if the text on both sides has the same - // direction. European and Arabic numbers act as if they were R in - // terms of their influence on neutrals. Start-of-level-run (sor) - // and end-of-level-run (eor) are used at level run boundaries. - // N2. Any remaining neutrals take the embedding direction. - for (var i$6 = 0; i$6 < len; ++i$6) { - if (isNeutral.test(types[i$6])) { - var end$1 = (void 0) - for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {} - var before = (i$6 ? types[i$6-1] : outerType) == "L" - var after = (end$1 < len ? types[end$1] : outerType) == "L" - var replace$1 = before == after ? (before ? "L" : "R") : outerType - for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1 } - i$6 = end$1 - 1 - } - } - - // Here we depart from the documented algorithm, in order to avoid - // building up an actual levels array. Since there are only three - // levels (0, 1, 2) in an implementation that doesn't take - // explicit embedding into account, we can build up the order on - // the fly, without following the level-based algorithm. - var order = [], m - for (var i$7 = 0; i$7 < len;) { - if (countsAsLeft.test(types[i$7])) { - var start = i$7 - for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {} - order.push(new BidiSpan(0, start, i$7)) - } else { - var pos = i$7, at = order.length - for (++i$7; i$7 < len && types[i$7] != "L"; ++i$7) {} - for (var j$2 = pos; j$2 < i$7;) { - if (countsAsNum.test(types[j$2])) { - if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)) } - var nstart = j$2 - for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {} - order.splice(at, 0, new BidiSpan(2, nstart, j$2)) - pos = j$2 - } else { ++j$2 } - } - if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)) } - } - } - if (direction == "ltr") { - if (order[0].level == 1 && (m = str.match(/^\s+/))) { - order[0].from = m[0].length - order.unshift(new BidiSpan(0, 0, m[0].length)) - } - if (lst(order).level == 1 && (m = str.match(/\s+$/))) { - lst(order).to -= m[0].length - order.push(new BidiSpan(0, len - m[0].length, len)) - } - } - - return direction == "rtl" ? order.reverse() : order - } -})() - -// Get the bidi ordering for the given line (and cache it). Returns -// false for lines that are fully left-to-right, and an array of -// BidiSpan objects otherwise. -function getOrder(line, direction) { - var order = line.order - if (order == null) { order = line.order = bidiOrdering(line.text, direction) } - return order -} - -// EVENT HANDLING - -// Lightweight event framework. on/off also work on DOM nodes, -// registering native DOM handlers. - -var noHandlers = [] - -var on = function(emitter, type, f) { - if (emitter.addEventListener) { - emitter.addEventListener(type, f, false) - } else if (emitter.attachEvent) { - emitter.attachEvent("on" + type, f) - } else { - var map = emitter._handlers || (emitter._handlers = {}) - map[type] = (map[type] || noHandlers).concat(f) - } -} - -function getHandlers(emitter, type) { - return emitter._handlers && emitter._handlers[type] || noHandlers -} - -function off(emitter, type, f) { - if (emitter.removeEventListener) { - emitter.removeEventListener(type, f, false) - } else if (emitter.detachEvent) { - emitter.detachEvent("on" + type, f) - } else { - var map = emitter._handlers, arr = map && map[type] - if (arr) { - var index = indexOf(arr, f) - if (index > -1) - { map[type] = arr.slice(0, index).concat(arr.slice(index + 1)) } - } - } -} - -function signal(emitter, type /*, values...*/) { - var handlers = getHandlers(emitter, type) - if (!handlers.length) { return } - var args = Array.prototype.slice.call(arguments, 2) - for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args) } -} - -// The DOM events that CodeMirror handles can be overridden by -// registering a (non-DOM) handler on the editor for the event name, -// and preventDefault-ing the event in that handler. -function signalDOMEvent(cm, e, override) { - if (typeof e == "string") - { e = {type: e, preventDefault: function() { this.defaultPrevented = true }} } - signal(cm, override || e.type, cm, e) - return e_defaultPrevented(e) || e.codemirrorIgnore -} - -function signalCursorActivity(cm) { - var arr = cm._handlers && cm._handlers.cursorActivity - if (!arr) { return } - var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []) - for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1) - { set.push(arr[i]) } } -} - -function hasHandler(emitter, type) { - return getHandlers(emitter, type).length > 0 -} - -// Add on and off methods to a constructor's prototype, to make -// registering events on such objects more convenient. -function eventMixin(ctor) { - ctor.prototype.on = function(type, f) {on(this, type, f)} - ctor.prototype.off = function(type, f) {off(this, type, f)} -} - -// Due to the fact that we still support jurassic IE versions, some -// compatibility wrappers are needed. - -function e_preventDefault(e) { - if (e.preventDefault) { e.preventDefault() } - else { e.returnValue = false } -} -function e_stopPropagation(e) { - if (e.stopPropagation) { e.stopPropagation() } - else { e.cancelBubble = true } -} -function e_defaultPrevented(e) { - return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false -} -function e_stop(e) {e_preventDefault(e); e_stopPropagation(e)} - -function e_target(e) {return e.target || e.srcElement} -function e_button(e) { - var b = e.which - if (b == null) { - if (e.button & 1) { b = 1 } - else if (e.button & 2) { b = 3 } - else if (e.button & 4) { b = 2 } - } - if (mac && e.ctrlKey && b == 1) { b = 3 } - return b -} - -// Detect drag-and-drop -var dragAndDrop = function() { - // There is *some* kind of drag-and-drop support in IE6-8, but I - // couldn't get it to work yet. - if (ie && ie_version < 9) { return false } - var div = elt('div') - return "draggable" in div || "dragDrop" in div -}() - -var zwspSupported -function zeroWidthElement(measure) { - if (zwspSupported == null) { - var test = elt("span", "\u200b") - removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])) - if (measure.firstChild.offsetHeight != 0) - { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8) } - } - var node = zwspSupported ? elt("span", "\u200b") : - elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px") - node.setAttribute("cm-text", "") - return node -} - -// Feature-detect IE's crummy client rect reporting for bidi text -var badBidiRects -function hasBadBidiRects(measure) { - if (badBidiRects != null) { return badBidiRects } - var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA")) - var r0 = range(txt, 0, 1).getBoundingClientRect() - var r1 = range(txt, 1, 2).getBoundingClientRect() - removeChildren(measure) - if (!r0 || r0.left == r0.right) { return false } // Safari returns null in some cases (#2780) - return badBidiRects = (r1.right - r0.right < 3) -} - -// See if "".split is the broken IE version, if so, provide an -// alternative way to split lines. -var splitLinesAuto = "\n\nb".split(/\n/).length != 3 ? function (string) { - var pos = 0, result = [], l = string.length - while (pos <= l) { - var nl = string.indexOf("\n", pos) - if (nl == -1) { nl = string.length } - var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl) - var rt = line.indexOf("\r") - if (rt != -1) { - result.push(line.slice(0, rt)) - pos += rt + 1 - } else { - result.push(line) - pos = nl + 1 - } - } - return result -} : function (string) { return string.split(/\r\n?|\n/); } - -var hasSelection = window.getSelection ? function (te) { - try { return te.selectionStart != te.selectionEnd } - catch(e) { return false } -} : function (te) { - var range - try {range = te.ownerDocument.selection.createRange()} - catch(e) {} - if (!range || range.parentElement() != te) { return false } - return range.compareEndPoints("StartToEnd", range) != 0 -} - -var hasCopyEvent = (function () { - var e = elt("div") - if ("oncopy" in e) { return true } - e.setAttribute("oncopy", "return;") - return typeof e.oncopy == "function" -})() - -var badZoomedRects = null -function hasBadZoomedRects(measure) { - if (badZoomedRects != null) { return badZoomedRects } - var node = removeChildrenAndAdd(measure, elt("span", "x")) - var normal = node.getBoundingClientRect() - var fromRange = range(node, 0, 1).getBoundingClientRect() - return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1 -} - -var modes = {}; -var mimeModes = {}; -// Extra arguments are stored as the mode's dependencies, which is -// used by (legacy) mechanisms like loadmode.js to automatically -// load a mode. (Preferred mechanism is the require/define calls.) -function defineMode(name, mode) { - if (arguments.length > 2) - { mode.dependencies = Array.prototype.slice.call(arguments, 2) } - modes[name] = mode -} - -function defineMIME(mime, spec) { - mimeModes[mime] = spec -} - -// Given a MIME type, a {name, ...options} config object, or a name -// string, return a mode config object. -function resolveMode(spec) { - if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { - spec = mimeModes[spec] - } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { - var found = mimeModes[spec.name] - if (typeof found == "string") { found = {name: found} } - spec = createObj(found, spec) - spec.name = found.name - } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { - return resolveMode("application/xml") - } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+json$/.test(spec)) { - return resolveMode("application/json") - } - if (typeof spec == "string") { return {name: spec} } - else { return spec || {name: "null"} } -} - -// Given a mode spec (anything that resolveMode accepts), find and -// initialize an actual mode object. -function getMode(options, spec) { - spec = resolveMode(spec) - var mfactory = modes[spec.name] - if (!mfactory) { return getMode(options, "text/plain") } - var modeObj = mfactory(options, spec) - if (modeExtensions.hasOwnProperty(spec.name)) { - var exts = modeExtensions[spec.name] - for (var prop in exts) { - if (!exts.hasOwnProperty(prop)) { continue } - if (modeObj.hasOwnProperty(prop)) { modeObj["_" + prop] = modeObj[prop] } - modeObj[prop] = exts[prop] - } - } - modeObj.name = spec.name - if (spec.helperType) { modeObj.helperType = spec.helperType } - if (spec.modeProps) { for (var prop$1 in spec.modeProps) - { modeObj[prop$1] = spec.modeProps[prop$1] } } - - return modeObj -} - -// This can be used to attach properties to mode objects from -// outside the actual mode definition. -var modeExtensions = {} -function extendMode(mode, properties) { - var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}) - copyObj(properties, exts) -} - -function copyState(mode, state) { - if (state === true) { return state } - if (mode.copyState) { return mode.copyState(state) } - var nstate = {} - for (var n in state) { - var val = state[n] - if (val instanceof Array) { val = val.concat([]) } - nstate[n] = val - } - return nstate -} - -// Given a mode and a state (for that mode), find the inner mode and -// state at the position that the state refers to. -function innerMode(mode, state) { - var info - while (mode.innerMode) { - info = mode.innerMode(state) - if (!info || info.mode == mode) { break } - state = info.state - mode = info.mode - } - return info || {mode: mode, state: state} -} - -function startState(mode, a1, a2) { - return mode.startState ? mode.startState(a1, a2) : true -} - -// STRING STREAM - -// Fed to the mode parsers, provides helper functions to make -// parsers more succinct. - -var StringStream = function(string, tabSize, lineOracle) { - this.pos = this.start = 0 - this.string = string - this.tabSize = tabSize || 8 - this.lastColumnPos = this.lastColumnValue = 0 - this.lineStart = 0 - this.lineOracle = lineOracle -}; - -StringStream.prototype.eol = function () {return this.pos >= this.string.length}; -StringStream.prototype.sol = function () {return this.pos == this.lineStart}; -StringStream.prototype.peek = function () {return this.string.charAt(this.pos) || undefined}; -StringStream.prototype.next = function () { - if (this.pos < this.string.length) - { return this.string.charAt(this.pos++) } -}; -StringStream.prototype.eat = function (match) { - var ch = this.string.charAt(this.pos) - var ok - if (typeof match == "string") { ok = ch == match } - else { ok = ch && (match.test ? match.test(ch) : match(ch)) } - if (ok) {++this.pos; return ch} -}; -StringStream.prototype.eatWhile = function (match) { - var start = this.pos - while (this.eat(match)){} - return this.pos > start -}; -StringStream.prototype.eatSpace = function () { - var this$1 = this; - - var start = this.pos - while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) { ++this$1.pos } - return this.pos > start -}; -StringStream.prototype.skipToEnd = function () {this.pos = this.string.length}; -StringStream.prototype.skipTo = function (ch) { - var found = this.string.indexOf(ch, this.pos) - if (found > -1) {this.pos = found; return true} -}; -StringStream.prototype.backUp = function (n) {this.pos -= n}; -StringStream.prototype.column = function () { - if (this.lastColumnPos < this.start) { - this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue) - this.lastColumnPos = this.start - } - return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0) -}; -StringStream.prototype.indentation = function () { - return countColumn(this.string, null, this.tabSize) - - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0) -}; -StringStream.prototype.match = function (pattern, consume, caseInsensitive) { - if (typeof pattern == "string") { - var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; } - var substr = this.string.substr(this.pos, pattern.length) - if (cased(substr) == cased(pattern)) { - if (consume !== false) { this.pos += pattern.length } - return true - } - } else { - var match = this.string.slice(this.pos).match(pattern) - if (match && match.index > 0) { return null } - if (match && consume !== false) { this.pos += match[0].length } - return match - } -}; -StringStream.prototype.current = function (){return this.string.slice(this.start, this.pos)}; -StringStream.prototype.hideFirstChars = function (n, inner) { - this.lineStart += n - try { return inner() } - finally { this.lineStart -= n } -}; -StringStream.prototype.lookAhead = function (n) { - var oracle = this.lineOracle - return oracle && oracle.lookAhead(n) -}; -StringStream.prototype.baseToken = function () { - var oracle = this.lineOracle - return oracle && oracle.baseToken(this.pos) -}; - -var SavedContext = function(state, lookAhead) { - this.state = state - this.lookAhead = lookAhead -}; - -var Context = function(doc, state, line, lookAhead) { - this.state = state - this.doc = doc - this.line = line - this.maxLookAhead = lookAhead || 0 - this.baseTokens = null - this.baseTokenPos = 1 -}; - -Context.prototype.lookAhead = function (n) { - var line = this.doc.getLine(this.line + n) - if (line != null && n > this.maxLookAhead) { this.maxLookAhead = n } - return line -}; - -Context.prototype.baseToken = function (n) { - var this$1 = this; - - if (!this.baseTokens) { return null } - while (this.baseTokens[this.baseTokenPos] <= n) - { this$1.baseTokenPos += 2 } - var type = this.baseTokens[this.baseTokenPos + 1] - return {type: type && type.replace(/( |^)overlay .*/, ""), - size: this.baseTokens[this.baseTokenPos] - n} -}; - -Context.prototype.nextLine = function () { - this.line++ - if (this.maxLookAhead > 0) { this.maxLookAhead-- } -}; - -Context.fromSaved = function (doc, saved, line) { - if (saved instanceof SavedContext) - { return new Context(doc, copyState(doc.mode, saved.state), line, saved.lookAhead) } - else - { return new Context(doc, copyState(doc.mode, saved), line) } -}; - -Context.prototype.save = function (copy) { - var state = copy !== false ? copyState(this.doc.mode, this.state) : this.state - return this.maxLookAhead > 0 ? new SavedContext(state, this.maxLookAhead) : state -}; - - -// Compute a style array (an array starting with a mode generation -// -- for invalidation -- followed by pairs of end positions and -// style strings), which is used to highlight the tokens on the -// line. -function highlightLine(cm, line, context, forceToEnd) { - // A styles array always starts with a number identifying the - // mode/overlays that it is based on (for easy invalidation). - var st = [cm.state.modeGen], lineClasses = {} - // Compute the base array of styles - runMode(cm, line.text, cm.doc.mode, context, function (end, style) { return st.push(end, style); }, - lineClasses, forceToEnd) - var state = context.state - - // Run overlays, adjust style array. - var loop = function ( o ) { - context.baseTokens = st - var overlay = cm.state.overlays[o], i = 1, at = 0 - context.state = true - runMode(cm, line.text, overlay.mode, context, function (end, style) { - var start = i - // Ensure there's a token end at the current position, and that i points at it - while (at < end) { - var i_end = st[i] - if (i_end > end) - { st.splice(i, 1, end, st[i+1], i_end) } - i += 2 - at = Math.min(end, i_end) - } - if (!style) { return } - if (overlay.opaque) { - st.splice(start, i - start, end, "overlay " + style) - i = start + 2 - } else { - for (; start < i; start += 2) { - var cur = st[start+1] - st[start+1] = (cur ? cur + " " : "") + "overlay " + style - } - } - }, lineClasses) - context.state = state - context.baseTokens = null - context.baseTokenPos = 1 }; - for (var o = 0; o < cm.state.overlays.length; ++o) loop( o ); - - return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null} -} - -function getLineStyles(cm, line, updateFrontier) { - if (!line.styles || line.styles[0] != cm.state.modeGen) { - var context = getContextBefore(cm, lineNo(line)) - var resetState = line.text.length > cm.options.maxHighlightLength && copyState(cm.doc.mode, context.state) - var result = highlightLine(cm, line, context) - if (resetState) { context.state = resetState } - line.stateAfter = context.save(!resetState) - line.styles = result.styles - if (result.classes) { line.styleClasses = result.classes } - else if (line.styleClasses) { line.styleClasses = null } - if (updateFrontier === cm.doc.highlightFrontier) - { cm.doc.modeFrontier = Math.max(cm.doc.modeFrontier, ++cm.doc.highlightFrontier) } + function removeChildren(e) { + for (var count = e.childNodes.length; count > 0; --count) + { e.removeChild(e.firstChild); } + return e } - return line.styles -} -function getContextBefore(cm, n, precise) { - var doc = cm.doc, display = cm.display - if (!doc.mode.startState) { return new Context(doc, true, n) } - var start = findStartLine(cm, n, precise) - var saved = start > doc.first && getLine(doc, start - 1).stateAfter - var context = saved ? Context.fromSaved(doc, saved, start) : new Context(doc, startState(doc.mode), start) - - doc.iter(start, n, function (line) { - processLine(cm, line.text, context) - var pos = context.line - line.stateAfter = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo ? context.save() : null - context.nextLine() - }) - if (precise) { doc.modeFrontier = context.line } - return context -} - -// Lightweight form of highlight -- proceed over this line and -// update state, but don't save a style array. Used for lines that -// aren't currently visible. -function processLine(cm, text, context, startAt) { - var mode = cm.doc.mode - var stream = new StringStream(text, cm.options.tabSize, context) - stream.start = stream.pos = startAt || 0 - if (text == "") { callBlankLine(mode, context.state) } - while (!stream.eol()) { - readToken(mode, stream, context.state) - stream.start = stream.pos + function removeChildrenAndAdd(parent, e) { + return removeChildren(parent).appendChild(e) } -} -function callBlankLine(mode, state) { - if (mode.blankLine) { return mode.blankLine(state) } - if (!mode.innerMode) { return } - var inner = innerMode(mode, state) - if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) } -} - -function readToken(mode, stream, state, inner) { - for (var i = 0; i < 10; i++) { - if (inner) { inner[0] = innerMode(mode, state).mode } - var style = mode.token(stream, state) - if (stream.pos > stream.start) { return style } + function elt(tag, content, className, style) { + var e = document.createElement(tag); + if (className) { e.className = className; } + if (style) { e.style.cssText = style; } + if (typeof content == "string") { e.appendChild(document.createTextNode(content)); } + else if (content) { for (var i = 0; i < content.length; ++i) { e.appendChild(content[i]); } } + return e } - throw new Error("Mode " + mode.name + " failed to advance stream.") -} - -var Token = function(stream, type, state) { - this.start = stream.start; this.end = stream.pos - this.string = stream.current() - this.type = type || null - this.state = state -}; - -// Utility for getTokenAt and getLineTokens -function takeToken(cm, pos, precise, asArray) { - var doc = cm.doc, mode = doc.mode, style - pos = clipPos(doc, pos) - var line = getLine(doc, pos.line), context = getContextBefore(cm, pos.line, precise) - var stream = new StringStream(line.text, cm.options.tabSize, context), tokens - if (asArray) { tokens = [] } - while ((asArray || stream.pos < pos.ch) && !stream.eol()) { - stream.start = stream.pos - style = readToken(mode, stream, context.state) - if (asArray) { tokens.push(new Token(stream, style, copyState(doc.mode, context.state))) } + // wrapper for elt, which removes the elt from the accessibility tree + function eltP(tag, content, className, style) { + var e = elt(tag, content, className, style); + e.setAttribute("role", "presentation"); + return e } - return asArray ? tokens : new Token(stream, style, context.state) -} -function extractLineClasses(type, output) { - if (type) { for (;;) { - var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/) - if (!lineClass) { break } - type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length) - var prop = lineClass[1] ? "bgClass" : "textClass" - if (output[prop] == null) - { output[prop] = lineClass[2] } - else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop])) - { output[prop] += " " + lineClass[2] } - } } - return type -} + var range; + if (document.createRange) { range = function(node, start, end, endNode) { + var r = document.createRange(); + r.setEnd(endNode || node, end); + r.setStart(node, start); + return r + }; } + else { range = function(node, start, end) { + var r = document.body.createTextRange(); + try { r.moveToElementText(node.parentNode); } + catch(e) { return r } + r.collapse(true); + r.moveEnd("character", end); + r.moveStart("character", start); + return r + }; } -// Run the given mode's parser over a line, calling f for each token. -function runMode(cm, text, mode, context, f, lineClasses, forceToEnd) { - var flattenSpans = mode.flattenSpans - if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans } - var curStart = 0, curStyle = null - var stream = new StringStream(text, cm.options.tabSize, context), style - var inner = cm.options.addModeClass && [null] - if (text == "") { extractLineClasses(callBlankLine(mode, context.state), lineClasses) } - while (!stream.eol()) { - if (stream.pos > cm.options.maxHighlightLength) { - flattenSpans = false - if (forceToEnd) { processLine(cm, text, context, stream.pos) } - stream.pos = text.length - style = null + function contains(parent, child) { + if (child.nodeType == 3) // Android browser always returns false when child is a textnode + { child = child.parentNode; } + if (parent.contains) + { return parent.contains(child) } + do { + if (child.nodeType == 11) { child = child.host; } + if (child == parent) { return true } + } while (child = child.parentNode) + } + + function activeElt() { + // IE and Edge may throw an "Unspecified Error" when accessing document.activeElement. + // IE < 10 will throw when accessed while the page is loading or in an iframe. + // IE > 9 and Edge will throw when accessed in an iframe if document.body is unavailable. + var activeElement; + try { + activeElement = document.activeElement; + } catch(e) { + activeElement = document.body || null; + } + while (activeElement && activeElement.shadowRoot && activeElement.shadowRoot.activeElement) + { activeElement = activeElement.shadowRoot.activeElement; } + return activeElement + } + + function addClass(node, cls) { + var current = node.className; + if (!classTest(cls).test(current)) { node.className += (current ? " " : "") + cls; } + } + function joinClasses(a, b) { + var as = a.split(" "); + for (var i = 0; i < as.length; i++) + { if (as[i] && !classTest(as[i]).test(b)) { b += " " + as[i]; } } + return b + } + + var selectInput = function(node) { node.select(); }; + if (ios) // Mobile Safari apparently has a bug where select() is broken. + { selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; }; } + else if (ie) // Suppress mysterious IE10 errors + { selectInput = function(node) { try { node.select(); } catch(_e) {} }; } + + function bind(f) { + var args = Array.prototype.slice.call(arguments, 1); + return function(){return f.apply(null, args)} + } + + function copyObj(obj, target, overwrite) { + if (!target) { target = {}; } + for (var prop in obj) + { if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop))) + { target[prop] = obj[prop]; } } + return target + } + + // Counts the column offset in a string, taking tabs into account. + // Used mostly to find indentation. + function countColumn(string, end, tabSize, startIndex, startValue) { + if (end == null) { + end = string.search(/[^\s\u00a0]/); + if (end == -1) { end = string.length; } + } + for (var i = startIndex || 0, n = startValue || 0;;) { + var nextTab = string.indexOf("\t", i); + if (nextTab < 0 || nextTab >= end) + { return n + (end - i) } + n += nextTab - i; + n += tabSize - (n % tabSize); + i = nextTab + 1; + } + } + + var Delayed = function() {this.id = null;}; + Delayed.prototype.set = function (ms, f) { + clearTimeout(this.id); + this.id = setTimeout(f, ms); + }; + + function indexOf(array, elt) { + for (var i = 0; i < array.length; ++i) + { if (array[i] == elt) { return i } } + return -1 + } + + // Number of pixels added to scroller and sizer to hide scrollbar + var scrollerGap = 30; + + // Returned or thrown by various protocols to signal 'I'm not + // handling this'. + var Pass = {toString: function(){return "CodeMirror.Pass"}}; + + // Reused option objects for setSelection & friends + var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"}; + + // The inverse of countColumn -- find the offset that corresponds to + // a particular column. + function findColumn(string, goal, tabSize) { + for (var pos = 0, col = 0;;) { + var nextTab = string.indexOf("\t", pos); + if (nextTab == -1) { nextTab = string.length; } + var skipped = nextTab - pos; + if (nextTab == string.length || col + skipped >= goal) + { return pos + Math.min(skipped, goal - col) } + col += nextTab - pos; + col += tabSize - (col % tabSize); + pos = nextTab + 1; + if (col >= goal) { return pos } + } + } + + var spaceStrs = [""]; + function spaceStr(n) { + while (spaceStrs.length <= n) + { spaceStrs.push(lst(spaceStrs) + " "); } + return spaceStrs[n] + } + + function lst(arr) { return arr[arr.length-1] } + + function map(array, f) { + var out = []; + for (var i = 0; i < array.length; i++) { out[i] = f(array[i], i); } + return out + } + + function insertSorted(array, value, score) { + var pos = 0, priority = score(value); + while (pos < array.length && score(array[pos]) <= priority) { pos++; } + array.splice(pos, 0, value); + } + + function nothing() {} + + function createObj(base, props) { + var inst; + if (Object.create) { + inst = Object.create(base); } else { - style = extractLineClasses(readToken(mode, stream, context.state, inner), lineClasses) - } - if (inner) { - var mName = inner[0].name - if (mName) { style = "m-" + (style ? mName + " " + style : mName) } - } - if (!flattenSpans || curStyle != style) { - while (curStart < stream.start) { - curStart = Math.min(stream.start, curStart + 5000) - f(curStart, curStyle) - } - curStyle = style - } - stream.start = stream.pos - } - while (curStart < stream.pos) { - // Webkit seems to refuse to render text nodes longer than 57444 - // characters, and returns inaccurate measurements in nodes - // starting around 5000 chars. - var pos = Math.min(stream.pos, curStart + 5000) - f(pos, curStyle) - curStart = pos - } -} - -// Finds the line to start with when starting a parse. Tries to -// find a line with a stateAfter, so that it can start with a -// valid state. If that fails, it returns the line with the -// smallest indentation, which tends to need the least context to -// parse correctly. -function findStartLine(cm, n, precise) { - var minindent, minline, doc = cm.doc - var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100) - for (var search = n; search > lim; --search) { - if (search <= doc.first) { return doc.first } - var line = getLine(doc, search - 1), after = line.stateAfter - if (after && (!precise || search + (after instanceof SavedContext ? after.lookAhead : 0) <= doc.modeFrontier)) - { return search } - var indented = countColumn(line.text, null, cm.options.tabSize) - if (minline == null || minindent > indented) { - minline = search - 1 - minindent = indented - } - } - return minline -} - -function retreatFrontier(doc, n) { - doc.modeFrontier = Math.min(doc.modeFrontier, n) - if (doc.highlightFrontier < n - 10) { return } - var start = doc.first - for (var line = n - 1; line > start; line--) { - var saved = getLine(doc, line).stateAfter - // change is on 3 - // state on line 1 looked ahead 2 -- so saw 3 - // test 1 + 2 < 3 should cover this - if (saved && (!(saved instanceof SavedContext) || line + saved.lookAhead < n)) { - start = line + 1 - break - } - } - doc.highlightFrontier = Math.min(doc.highlightFrontier, start) -} - -// LINE DATA STRUCTURE - -// Line objects. These hold state related to a line, including -// highlighting info (the styles array). -var Line = function(text, markedSpans, estimateHeight) { - this.text = text - attachMarkedSpans(this, markedSpans) - this.height = estimateHeight ? estimateHeight(this) : 1 -}; - -Line.prototype.lineNo = function () { return lineNo(this) }; -eventMixin(Line) - -// Change the content (text, markers) of a line. Automatically -// invalidates cached information and tries to re-estimate the -// line's height. -function updateLine(line, text, markedSpans, estimateHeight) { - line.text = text - if (line.stateAfter) { line.stateAfter = null } - if (line.styles) { line.styles = null } - if (line.order != null) { line.order = null } - detachMarkedSpans(line) - attachMarkedSpans(line, markedSpans) - var estHeight = estimateHeight ? estimateHeight(line) : 1 - if (estHeight != line.height) { updateLineHeight(line, estHeight) } -} - -// Detach a line from the document tree and its markers. -function cleanUpLine(line) { - line.parent = null - detachMarkedSpans(line) -} - -// Convert a style as returned by a mode (either null, or a string -// containing one or more styles) to a CSS style. This is cached, -// and also looks for line-wide styles. -var styleToClassCache = {}; -var styleToClassCacheWithMode = {}; -function interpretTokenStyle(style, options) { - if (!style || /^\s*$/.test(style)) { return null } - var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache - return cache[style] || - (cache[style] = style.replace(/\S+/g, "cm-$&")) -} - -// Render the DOM representation of the text of a line. Also builds -// up a 'line map', which points at the DOM nodes that represent -// specific stretches of text, and is used by the measuring code. -// The returned object contains the DOM node, this map, and -// information about line-wide styles that were set by the mode. -function buildLineContent(cm, lineView) { - // The padding-right forces the element to have a 'border', which - // is needed on Webkit to be able to get line-level bounding - // rectangles for it (in measureChar). - var content = eltP("span", null, null, webkit ? "padding-right: .1px" : null) - var builder = {pre: eltP("pre", [content], "CodeMirror-line"), content: content, - col: 0, pos: 0, cm: cm, - trailingSpace: false, - splitSpaces: cm.getOption("lineWrapping")} - lineView.measure = {} - - // Iterate over the logical lines that make up this visual line. - for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) { - var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0) - builder.pos = 0 - builder.addToken = buildToken - // Optionally wire in some hacks into the token-rendering - // algorithm, to deal with browser quirks. - if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction))) - { builder.addToken = buildTokenBadBidi(builder.addToken, order) } - builder.map = [] - var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line) - insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate)) - if (line.styleClasses) { - if (line.styleClasses.bgClass) - { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || "") } - if (line.styleClasses.textClass) - { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || "") } - } - - // Ensure at least a single node is present, for measuring. - if (builder.map.length == 0) - { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))) } - - // Store the map and a cache object for the current logical line - if (i == 0) { - lineView.measure.map = builder.map - lineView.measure.cache = {} - } else { - ;(lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map) - ;(lineView.measure.caches || (lineView.measure.caches = [])).push({}) + nothing.prototype = base; + inst = new nothing(); } + if (props) { copyObj(props, inst); } + return inst } - // See issue #2901 - if (webkit) { - var last = builder.content.lastChild - if (/\bcm-tab\b/.test(last.className) || (last.querySelector && last.querySelector(".cm-tab"))) - { builder.content.className = "cm-tab-wrap-hack" } + var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/; + function isWordCharBasic(ch) { + return /\w/.test(ch) || ch > "\x80" && + (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)) + } + function isWordChar(ch, helper) { + if (!helper) { return isWordCharBasic(ch) } + if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) { return true } + return helper.test(ch) } - signal(cm, "renderLine", cm, lineView.line, builder.pre) - if (builder.pre.className) - { builder.textClass = joinClasses(builder.pre.className, builder.textClass || "") } - - return builder -} - -function defaultSpecialCharPlaceholder(ch) { - var token = elt("span", "\u2022", "cm-invalidchar") - token.title = "\\u" + ch.charCodeAt(0).toString(16) - token.setAttribute("aria-label", token.title) - return token -} - -// Build up the DOM representation for a single token, and add it to -// the line map. Takes care to render special characters separately. -function buildToken(builder, text, style, startStyle, endStyle, title, css) { - if (!text) { return } - var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text - var special = builder.cm.state.specialChars, mustWrap = false - var content - if (!special.test(text)) { - builder.col += text.length - content = document.createTextNode(displayText) - builder.map.push(builder.pos, builder.pos + text.length, content) - if (ie && ie_version < 9) { mustWrap = true } - builder.pos += text.length - } else { - content = document.createDocumentFragment() - var pos = 0 - while (true) { - special.lastIndex = pos - var m = special.exec(text) - var skipped = m ? m.index - pos : text.length - pos - if (skipped) { - var txt = document.createTextNode(displayText.slice(pos, pos + skipped)) - if (ie && ie_version < 9) { content.appendChild(elt("span", [txt])) } - else { content.appendChild(txt) } - builder.map.push(builder.pos, builder.pos + skipped, txt) - builder.col += skipped - builder.pos += skipped - } - if (!m) { break } - pos += skipped + 1 - var txt$1 = (void 0) - if (m[0] == "\t") { - var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize - txt$1 = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")) - txt$1.setAttribute("role", "presentation") - txt$1.setAttribute("cm-text", "\t") - builder.col += tabWidth - } else if (m[0] == "\r" || m[0] == "\n") { - txt$1 = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar")) - txt$1.setAttribute("cm-text", m[0]) - builder.col += 1 - } else { - txt$1 = builder.cm.options.specialCharPlaceholder(m[0]) - txt$1.setAttribute("cm-text", m[0]) - if (ie && ie_version < 9) { content.appendChild(elt("span", [txt$1])) } - else { content.appendChild(txt$1) } - builder.col += 1 - } - builder.map.push(builder.pos, builder.pos + 1, txt$1) - builder.pos++ - } + function isEmpty(obj) { + for (var n in obj) { if (obj.hasOwnProperty(n) && obj[n]) { return false } } + return true } - builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32 - if (style || startStyle || endStyle || mustWrap || css) { - var fullStyle = style || "" - if (startStyle) { fullStyle += startStyle } - if (endStyle) { fullStyle += endStyle } - var token = elt("span", [content], fullStyle, css) - if (title) { token.title = title } - return builder.content.appendChild(token) - } - builder.content.appendChild(content) -} -// Change some spaces to NBSP to prevent the browser from collapsing -// trailing spaces at the end of a line when rendering text (issue #1362). -function splitSpaces(text, trailingBefore) { - if (text.length > 1 && !/ /.test(text)) { return text } - var spaceBefore = trailingBefore, result = "" - for (var i = 0; i < text.length; i++) { - var ch = text.charAt(i) - if (ch == " " && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32)) - { ch = "\u00a0" } - result += ch - spaceBefore = ch == " " - } - return result -} + // Extending unicode characters. A series of a non-extending char + + // any number of extending chars is treated as a single unit as far + // as editing and measuring is concerned. This is not fully correct, + // since some scripts/fonts/browsers also treat other configurations + // of code points as a group. + var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/; + function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch) } -// Work around nonsense dimensions being reported for stretches of -// right-to-left text. -function buildTokenBadBidi(inner, order) { - return function (builder, text, style, startStyle, endStyle, title, css) { - style = style ? style + " cm-force-border" : "cm-force-border" - var start = builder.pos, end = start + text.length + // Returns a number from the range [`0`; `str.length`] unless `pos` is outside that range. + function skipExtendingChars(str, pos, dir) { + while ((dir < 0 ? pos > 0 : pos < str.length) && isExtendingChar(str.charAt(pos))) { pos += dir; } + return pos + } + + // Returns the value from the range [`from`; `to`] that satisfies + // `pred` and is closest to `from`. Assumes that at least `to` + // satisfies `pred`. Supports `from` being greater than `to`. + function findFirst(pred, from, to) { + // At any point we are certain `to` satisfies `pred`, don't know + // whether `from` does. + var dir = from > to ? -1 : 1; for (;;) { - // Find the part that overlaps with the start of this text - var part = (void 0) - for (var i = 0; i < order.length; i++) { - part = order[i] - if (part.to > start && part.from <= start) { break } - } - if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, title, css) } - inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css) - startStyle = null - text = text.slice(part.to - start) - start = part.to + if (from == to) { return from } + var midF = (from + to) / 2, mid = dir < 0 ? Math.ceil(midF) : Math.floor(midF); + if (mid == from) { return pred(mid) ? from : to } + if (pred(mid)) { to = mid; } + else { from = mid + dir; } } } -} -function buildCollapsedSpan(builder, size, marker, ignoreWidget) { - var widget = !ignoreWidget && marker.widgetNode - if (widget) { builder.map.push(builder.pos, builder.pos + size, widget) } - if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) { - if (!widget) - { widget = builder.content.appendChild(document.createElement("span")) } - widget.setAttribute("cm-marker", marker.id) - } - if (widget) { - builder.cm.display.input.setUneditable(widget) - builder.content.appendChild(widget) - } - builder.pos += size - builder.trailingSpace = false -} + // The display handles the DOM integration, both for input reading + // and content drawing. It holds references to DOM nodes and + // display-related state. -// Outputs a number of spans to make up a line, taking highlighting -// and marked text into account. -function insertLineContent(line, builder, styles) { - var spans = line.markedSpans, allText = line.text, at = 0 - if (!spans) { - for (var i$1 = 1; i$1 < styles.length; i$1+=2) - { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)) } - return + function Display(place, doc, input) { + var d = this; + this.input = input; + + // Covers bottom-right square when both scrollbars are present. + d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); + d.scrollbarFiller.setAttribute("cm-not-content", "true"); + // Covers bottom of gutter when coverGutterNextToScrollbar is on + // and h scrollbar is present. + d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler"); + d.gutterFiller.setAttribute("cm-not-content", "true"); + // Will contain the actual code, positioned to cover the viewport. + d.lineDiv = eltP("div", null, "CodeMirror-code"); + // Elements are added to these to represent selection and cursors. + d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); + d.cursorDiv = elt("div", null, "CodeMirror-cursors"); + // A visibility: hidden element used to find the size of things. + d.measure = elt("div", null, "CodeMirror-measure"); + // When lines outside of the viewport are measured, they are drawn in this. + d.lineMeasure = elt("div", null, "CodeMirror-measure"); + // Wraps everything that needs to exist inside the vertically-padded coordinate system + d.lineSpace = eltP("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv], + null, "position: relative; outline: none"); + var lines = eltP("div", [d.lineSpace], "CodeMirror-lines"); + // Moved around its parent to cover visible view. + d.mover = elt("div", [lines], null, "position: relative"); + // Set to the height of the document, allowing scrolling. + d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); + d.sizerWidth = null; + // Behavior of elts with overflow: auto and padding is + // inconsistent across browsers. This is used to ensure the + // scrollable area is big enough. + d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;"); + // Will contain the gutters, if any. + d.gutters = elt("div", null, "CodeMirror-gutters"); + d.lineGutter = null; + // Actual scrollable element. + d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll"); + d.scroller.setAttribute("tabIndex", "-1"); + // The element in which the editor lives. + d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror"); + + // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported) + if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; } + if (!webkit && !(gecko && mobile)) { d.scroller.draggable = true; } + + if (place) { + if (place.appendChild) { place.appendChild(d.wrapper); } + else { place(d.wrapper); } + } + + // Current rendered range (may be bigger than the view window). + d.viewFrom = d.viewTo = doc.first; + d.reportedViewFrom = d.reportedViewTo = doc.first; + // Information about the rendered lines. + d.view = []; + d.renderedView = null; + // Holds info about a single rendered line when it was rendered + // for measurement, while not in view. + d.externalMeasured = null; + // Empty space (in pixels) above the view + d.viewOffset = 0; + d.lastWrapHeight = d.lastWrapWidth = 0; + d.updateLineNumbers = null; + + d.nativeBarWidth = d.barHeight = d.barWidth = 0; + d.scrollbarsClipped = false; + + // Used to only resize the line number gutter when necessary (when + // the amount of lines crosses a boundary that makes its width change) + d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null; + // Set to true when a non-horizontal-scrolling line widget is + // added. As an optimization, line widget aligning is skipped when + // this is false. + d.alignWidgets = false; + + d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null; + + // Tracks the maximum line length so that the horizontal scrollbar + // can be kept static when scrolling. + d.maxLine = null; + d.maxLineLength = 0; + d.maxLineChanged = false; + + // Used for measuring wheel scrolling granularity + d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null; + + // True when shift is held down. + d.shift = false; + + // Used to track whether anything happened since the context menu + // was opened. + d.selForContextMenu = null; + + d.activeTouch = null; + + input.init(d); } - var len = allText.length, pos = 0, i = 1, text = "", style, css - var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed - for (;;) { - if (nextChange == pos) { // Update current marker set - spanStyle = spanEndStyle = spanStartStyle = title = css = "" - collapsed = null; nextChange = Infinity - var foundBookmarks = [], endStyles = (void 0) - for (var j = 0; j < spans.length; ++j) { - var sp = spans[j], m = sp.marker - if (m.type == "bookmark" && sp.from == pos && m.widgetNode) { - foundBookmarks.push(m) - } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) { - if (sp.to != null && sp.to != pos && nextChange > sp.to) { - nextChange = sp.to - spanEndStyle = "" + // Find the line object corresponding to the given line number. + function getLine(doc, n) { + n -= doc.first; + if (n < 0 || n >= doc.size) { throw new Error("There is no line " + (n + doc.first) + " in the document.") } + var chunk = doc; + while (!chunk.lines) { + for (var i = 0;; ++i) { + var child = chunk.children[i], sz = child.chunkSize(); + if (n < sz) { chunk = child; break } + n -= sz; + } + } + return chunk.lines[n] + } + + // Get the part of a document between two positions, as an array of + // strings. + function getBetween(doc, start, end) { + var out = [], n = start.line; + doc.iter(start.line, end.line + 1, function (line) { + var text = line.text; + if (n == end.line) { text = text.slice(0, end.ch); } + if (n == start.line) { text = text.slice(start.ch); } + out.push(text); + ++n; + }); + return out + } + // Get the lines between from and to, as array of strings. + function getLines(doc, from, to) { + var out = []; + doc.iter(from, to, function (line) { out.push(line.text); }); // iter aborts when callback returns truthy value + return out + } + + // Update the height of a line, propagating the height change + // upwards to parent nodes. + function updateLineHeight(line, height) { + var diff = height - line.height; + if (diff) { for (var n = line; n; n = n.parent) { n.height += diff; } } + } + + // Given a line object, find its line number by walking up through + // its parent links. + function lineNo(line) { + if (line.parent == null) { return null } + var cur = line.parent, no = indexOf(cur.lines, line); + for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { + for (var i = 0;; ++i) { + if (chunk.children[i] == cur) { break } + no += chunk.children[i].chunkSize(); + } + } + return no + cur.first + } + + // Find the line at the given vertical position, using the height + // information in the document tree. + function lineAtHeight(chunk, h) { + var n = chunk.first; + outer: do { + for (var i$1 = 0; i$1 < chunk.children.length; ++i$1) { + var child = chunk.children[i$1], ch = child.height; + if (h < ch) { chunk = child; continue outer } + h -= ch; + n += child.chunkSize(); + } + return n + } while (!chunk.lines) + var i = 0; + for (; i < chunk.lines.length; ++i) { + var line = chunk.lines[i], lh = line.height; + if (h < lh) { break } + h -= lh; + } + return n + i + } + + function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size} + + function lineNumberFor(options, i) { + return String(options.lineNumberFormatter(i + options.firstLineNumber)) + } + + // A Pos instance represents a position within the text. + function Pos(line, ch, sticky) { + if ( sticky === void 0 ) sticky = null; + + if (!(this instanceof Pos)) { return new Pos(line, ch, sticky) } + this.line = line; + this.ch = ch; + this.sticky = sticky; + } + + // Compare two positions, return 0 if they are the same, a negative + // number when a is less, and a positive number otherwise. + function cmp(a, b) { return a.line - b.line || a.ch - b.ch } + + function equalCursorPos(a, b) { return a.sticky == b.sticky && cmp(a, b) == 0 } + + function copyPos(x) {return Pos(x.line, x.ch)} + function maxPos(a, b) { return cmp(a, b) < 0 ? b : a } + function minPos(a, b) { return cmp(a, b) < 0 ? a : b } + + // Most of the external API clips given positions to make sure they + // actually exist within the document. + function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1))} + function clipPos(doc, pos) { + if (pos.line < doc.first) { return Pos(doc.first, 0) } + var last = doc.first + doc.size - 1; + if (pos.line > last) { return Pos(last, getLine(doc, last).text.length) } + return clipToLen(pos, getLine(doc, pos.line).text.length) + } + function clipToLen(pos, linelen) { + var ch = pos.ch; + if (ch == null || ch > linelen) { return Pos(pos.line, linelen) } + else if (ch < 0) { return Pos(pos.line, 0) } + else { return pos } + } + function clipPosArray(doc, array) { + var out = []; + for (var i = 0; i < array.length; i++) { out[i] = clipPos(doc, array[i]); } + return out + } + + // Optimize some code when these features are not used. + var sawReadOnlySpans = false, sawCollapsedSpans = false; + + function seeReadOnlySpans() { + sawReadOnlySpans = true; + } + + function seeCollapsedSpans() { + sawCollapsedSpans = true; + } + + // TEXTMARKER SPANS + + function MarkedSpan(marker, from, to) { + this.marker = marker; + this.from = from; this.to = to; + } + + // Search an array of spans for a span matching the given marker. + function getMarkedSpanFor(spans, marker) { + if (spans) { for (var i = 0; i < spans.length; ++i) { + var span = spans[i]; + if (span.marker == marker) { return span } + } } + } + // Remove a span from an array, returning undefined if no spans are + // left (we don't store arrays for lines without spans). + function removeMarkedSpan(spans, span) { + var r; + for (var i = 0; i < spans.length; ++i) + { if (spans[i] != span) { (r || (r = [])).push(spans[i]); } } + return r + } + // Add a span to a line. + function addMarkedSpan(line, span) { + line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; + span.marker.attachLine(line); + } + + // Used for the algorithm that adjusts markers for a change in the + // document. These functions cut an array of spans at a given + // character position, returning an array of remaining chunks (or + // undefined if nothing remains). + function markedSpansBefore(old, startCh, isInsert) { + var nw; + if (old) { for (var i = 0; i < old.length; ++i) { + var span = old[i], marker = span.marker; + var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh); + if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) { + var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh) + ;(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to)); + } + } } + return nw + } + function markedSpansAfter(old, endCh, isInsert) { + var nw; + if (old) { for (var i = 0; i < old.length; ++i) { + var span = old[i], marker = span.marker; + var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh); + if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) { + var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh) + ;(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh, + span.to == null ? null : span.to - endCh)); + } + } } + return nw + } + + // Given a change object, compute the new set of marker spans that + // cover the line in which the change took place. Removes spans + // entirely within the change, reconnects spans belonging to the + // same marker that appear on both sides of the change, and cuts off + // spans partially within the change. Returns an array of span + // arrays with one element for each line in (after) the change. + function stretchSpansOverChange(doc, change) { + if (change.full) { return null } + var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans; + var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans; + if (!oldFirst && !oldLast) { return null } + + var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0; + // Get the spans that 'stick out' on both sides + var first = markedSpansBefore(oldFirst, startCh, isInsert); + var last = markedSpansAfter(oldLast, endCh, isInsert); + + // Next, merge those two ends + var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0); + if (first) { + // Fix up .to properties of first + for (var i = 0; i < first.length; ++i) { + var span = first[i]; + if (span.to == null) { + var found = getMarkedSpanFor(last, span.marker); + if (!found) { span.to = startCh; } + else if (sameLine) { span.to = found.to == null ? null : found.to + offset; } + } + } + } + if (last) { + // Fix up .from in last (or move them into first in case of sameLine) + for (var i$1 = 0; i$1 < last.length; ++i$1) { + var span$1 = last[i$1]; + if (span$1.to != null) { span$1.to += offset; } + if (span$1.from == null) { + var found$1 = getMarkedSpanFor(first, span$1.marker); + if (!found$1) { + span$1.from = offset; + if (sameLine) { (first || (first = [])).push(span$1); } } - if (m.className) { spanStyle += " " + m.className } - if (m.css) { css = (css ? css + ";" : "") + m.css } - if (m.startStyle && sp.from == pos) { spanStartStyle += " " + m.startStyle } - if (m.endStyle && sp.to == nextChange) { (endStyles || (endStyles = [])).push(m.endStyle, sp.to) } - if (m.title && !title) { title = m.title } - if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0)) - { collapsed = sp } - } else if (sp.from > pos && nextChange > sp.from) { - nextChange = sp.from + } else { + span$1.from += offset; + if (sameLine) { (first || (first = [])).push(span$1); } } } - if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2) - { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += " " + endStyles[j$1] } } } + } + // Make sure we didn't create any zero-length spans + if (first) { first = clearEmptySpans(first); } + if (last && last != first) { last = clearEmptySpans(last); } - if (!collapsed || collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2) - { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]) } } - if (collapsed && (collapsed.from || 0) == pos) { - buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos, - collapsed.marker, collapsed.from == null) - if (collapsed.to == null) { return } - if (collapsed.to == pos) { collapsed = false } + var newMarkers = [first]; + if (!sameLine) { + // Fill gap with whole-line-spans + var gap = change.text.length - 2, gapMarkers; + if (gap > 0 && first) + { for (var i$2 = 0; i$2 < first.length; ++i$2) + { if (first[i$2].to == null) + { (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i$2].marker, null, null)); } } } + for (var i$3 = 0; i$3 < gap; ++i$3) + { newMarkers.push(gapMarkers); } + newMarkers.push(last); + } + return newMarkers + } + + // Remove spans that are empty and don't have a clearWhenEmpty + // option of false. + function clearEmptySpans(spans) { + for (var i = 0; i < spans.length; ++i) { + var span = spans[i]; + if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false) + { spans.splice(i--, 1); } + } + if (!spans.length) { return null } + return spans + } + + // Used to 'clip' out readOnly ranges when making a change. + function removeReadOnlyRanges(doc, from, to) { + var markers = null; + doc.iter(from.line, to.line + 1, function (line) { + if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) { + var mark = line.markedSpans[i].marker; + if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) + { (markers || (markers = [])).push(mark); } + } } + }); + if (!markers) { return null } + var parts = [{from: from, to: to}]; + for (var i = 0; i < markers.length; ++i) { + var mk = markers[i], m = mk.find(0); + for (var j = 0; j < parts.length; ++j) { + var p = parts[j]; + if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) { continue } + var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to); + if (dfrom < 0 || !mk.inclusiveLeft && !dfrom) + { newParts.push({from: p.from, to: m.from}); } + if (dto > 0 || !mk.inclusiveRight && !dto) + { newParts.push({from: m.to, to: p.to}); } + parts.splice.apply(parts, newParts); + j += newParts.length - 3; } } - if (pos >= len) { break } + return parts + } - var upto = Math.min(len, nextChange) - while (true) { - if (text) { - var end = pos + text.length - if (!collapsed) { - var tokenText = end > upto ? text.slice(0, upto - pos) : text - builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, - spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title, css) + // Connect or disconnect spans from a line. + function detachMarkedSpans(line) { + var spans = line.markedSpans; + if (!spans) { return } + for (var i = 0; i < spans.length; ++i) + { spans[i].marker.detachLine(line); } + line.markedSpans = null; + } + function attachMarkedSpans(line, spans) { + if (!spans) { return } + for (var i = 0; i < spans.length; ++i) + { spans[i].marker.attachLine(line); } + line.markedSpans = spans; + } + + // Helpers used when computing which overlapping collapsed span + // counts as the larger one. + function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0 } + function extraRight(marker) { return marker.inclusiveRight ? 1 : 0 } + + // Returns a number indicating which of two overlapping collapsed + // spans is larger (and thus includes the other). Falls back to + // comparing ids when the spans cover exactly the same range. + function compareCollapsedMarkers(a, b) { + var lenDiff = a.lines.length - b.lines.length; + if (lenDiff != 0) { return lenDiff } + var aPos = a.find(), bPos = b.find(); + var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b); + if (fromCmp) { return -fromCmp } + var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b); + if (toCmp) { return toCmp } + return b.id - a.id + } + + // Find out whether a line ends or starts in a collapsed span. If + // so, return the marker for that span. + function collapsedSpanAtSide(line, start) { + var sps = sawCollapsedSpans && line.markedSpans, found; + if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) { + sp = sps[i]; + if (sp.marker.collapsed && (start ? sp.from : sp.to) == null && + (!found || compareCollapsedMarkers(found, sp.marker) < 0)) + { found = sp.marker; } + } } + return found + } + function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true) } + function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false) } + + function collapsedSpanAround(line, ch) { + var sps = sawCollapsedSpans && line.markedSpans, found; + if (sps) { for (var i = 0; i < sps.length; ++i) { + var sp = sps[i]; + if (sp.marker.collapsed && (sp.from == null || sp.from < ch) && (sp.to == null || sp.to > ch) && + (!found || compareCollapsedMarkers(found, sp.marker) < 0)) { found = sp.marker; } + } } + return found + } + + // Test whether there exists a collapsed span that partially + // overlaps (covers the start or end, but not both) of a new span. + // Such overlap is not allowed. + function conflictingCollapsedRange(doc, lineNo$$1, from, to, marker) { + var line = getLine(doc, lineNo$$1); + var sps = sawCollapsedSpans && line.markedSpans; + if (sps) { for (var i = 0; i < sps.length; ++i) { + var sp = sps[i]; + if (!sp.marker.collapsed) { continue } + var found = sp.marker.find(0); + var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker); + var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker); + if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) { continue } + if (fromCmp <= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.to, from) >= 0 : cmp(found.to, from) > 0) || + fromCmp >= 0 && (sp.marker.inclusiveRight && marker.inclusiveLeft ? cmp(found.from, to) <= 0 : cmp(found.from, to) < 0)) + { return true } + } } + } + + // A visual line is a line as drawn on the screen. Folding, for + // example, can cause multiple logical lines to appear on the same + // visual line. This finds the start of the visual line that the + // given line is part of (usually that is the line itself). + function visualLine(line) { + var merged; + while (merged = collapsedSpanAtStart(line)) + { line = merged.find(-1, true).line; } + return line + } + + function visualLineEnd(line) { + var merged; + while (merged = collapsedSpanAtEnd(line)) + { line = merged.find(1, true).line; } + return line + } + + // Returns an array of logical lines that continue the visual line + // started by the argument, or undefined if there are no such lines. + function visualLineContinued(line) { + var merged, lines; + while (merged = collapsedSpanAtEnd(line)) { + line = merged.find(1, true).line + ;(lines || (lines = [])).push(line); + } + return lines + } + + // Get the line number of the start of the visual line that the + // given line number is part of. + function visualLineNo(doc, lineN) { + var line = getLine(doc, lineN), vis = visualLine(line); + if (line == vis) { return lineN } + return lineNo(vis) + } + + // Get the line number of the start of the next visual line after + // the given line. + function visualLineEndNo(doc, lineN) { + if (lineN > doc.lastLine()) { return lineN } + var line = getLine(doc, lineN), merged; + if (!lineIsHidden(doc, line)) { return lineN } + while (merged = collapsedSpanAtEnd(line)) + { line = merged.find(1, true).line; } + return lineNo(line) + 1 + } + + // Compute whether a line is hidden. Lines count as hidden when they + // are part of a visual line that starts with another line, or when + // they are entirely covered by collapsed, non-widget span. + function lineIsHidden(doc, line) { + var sps = sawCollapsedSpans && line.markedSpans; + if (sps) { for (var sp = (void 0), i = 0; i < sps.length; ++i) { + sp = sps[i]; + if (!sp.marker.collapsed) { continue } + if (sp.from == null) { return true } + if (sp.marker.widgetNode) { continue } + if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) + { return true } + } } + } + function lineIsHiddenInner(doc, line, span) { + if (span.to == null) { + var end = span.marker.find(1, true); + return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker)) + } + if (span.marker.inclusiveRight && span.to == line.text.length) + { return true } + for (var sp = (void 0), i = 0; i < line.markedSpans.length; ++i) { + sp = line.markedSpans[i]; + if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to && + (sp.to == null || sp.to != span.from) && + (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && + lineIsHiddenInner(doc, line, sp)) { return true } + } + } + + // Find the height above the given line. + function heightAtLine(lineObj) { + lineObj = visualLine(lineObj); + + var h = 0, chunk = lineObj.parent; + for (var i = 0; i < chunk.lines.length; ++i) { + var line = chunk.lines[i]; + if (line == lineObj) { break } + else { h += line.height; } + } + for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { + for (var i$1 = 0; i$1 < p.children.length; ++i$1) { + var cur = p.children[i$1]; + if (cur == chunk) { break } + else { h += cur.height; } + } + } + return h + } + + // Compute the character length of a line, taking into account + // collapsed ranges (see markText) that might hide parts, and join + // other lines onto it. + function lineLength(line) { + if (line.height == 0) { return 0 } + var len = line.text.length, merged, cur = line; + while (merged = collapsedSpanAtStart(cur)) { + var found = merged.find(0, true); + cur = found.from.line; + len += found.from.ch - found.to.ch; + } + cur = line; + while (merged = collapsedSpanAtEnd(cur)) { + var found$1 = merged.find(0, true); + len -= cur.text.length - found$1.from.ch; + cur = found$1.to.line; + len += cur.text.length - found$1.to.ch; + } + return len + } + + // Find the longest line in the document. + function findMaxLine(cm) { + var d = cm.display, doc = cm.doc; + d.maxLine = getLine(doc, doc.first); + d.maxLineLength = lineLength(d.maxLine); + d.maxLineChanged = true; + doc.iter(function (line) { + var len = lineLength(line); + if (len > d.maxLineLength) { + d.maxLineLength = len; + d.maxLine = line; + } + }); + } + + // BIDI HELPERS + + function iterateBidiSections(order, from, to, f) { + if (!order) { return f(from, to, "ltr", 0) } + var found = false; + for (var i = 0; i < order.length; ++i) { + var part = order[i]; + if (part.from < to && part.to > from || from == to && part.to == from) { + f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr", i); + found = true; + } + } + if (!found) { f(from, to, "ltr"); } + } + + var bidiOther = null; + function getBidiPartAt(order, ch, sticky) { + var found; + bidiOther = null; + for (var i = 0; i < order.length; ++i) { + var cur = order[i]; + if (cur.from < ch && cur.to > ch) { return i } + if (cur.to == ch) { + if (cur.from != cur.to && sticky == "before") { found = i; } + else { bidiOther = i; } + } + if (cur.from == ch) { + if (cur.from != cur.to && sticky != "before") { found = i; } + else { bidiOther = i; } + } + } + return found != null ? found : bidiOther + } + + // Bidirectional ordering algorithm + // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm + // that this (partially) implements. + + // One-char codes used for character types: + // L (L): Left-to-Right + // R (R): Right-to-Left + // r (AL): Right-to-Left Arabic + // 1 (EN): European Number + // + (ES): European Number Separator + // % (ET): European Number Terminator + // n (AN): Arabic Number + // , (CS): Common Number Separator + // m (NSM): Non-Spacing Mark + // b (BN): Boundary Neutral + // s (B): Paragraph Separator + // t (S): Segment Separator + // w (WS): Whitespace + // N (ON): Other Neutrals + + // Returns null if characters are ordered as they appear + // (left-to-right), or an array of sections ({from, to, level} + // objects) in the order in which they occur visually. + var bidiOrdering = (function() { + // Character types for codepoints 0 to 0xff + var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN"; + // Character types for codepoints 0x600 to 0x6f9 + var arabicTypes = "nnnnnnNNr%%r,rNNmmmmmmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmmmnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmnNmmmmmmrrmmNmmmmrr1111111111"; + function charType(code) { + if (code <= 0xf7) { return lowTypes.charAt(code) } + else if (0x590 <= code && code <= 0x5f4) { return "R" } + else if (0x600 <= code && code <= 0x6f9) { return arabicTypes.charAt(code - 0x600) } + else if (0x6ee <= code && code <= 0x8ac) { return "r" } + else if (0x2000 <= code && code <= 0x200b) { return "w" } + else if (code == 0x200c) { return "b" } + else { return "L" } + } + + var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; + var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; + + function BidiSpan(level, from, to) { + this.level = level; + this.from = from; this.to = to; + } + + return function(str, direction) { + var outerType = direction == "ltr" ? "L" : "R"; + + if (str.length == 0 || direction == "ltr" && !bidiRE.test(str)) { return false } + var len = str.length, types = []; + for (var i = 0; i < len; ++i) + { types.push(charType(str.charCodeAt(i))); } + + // W1. Examine each non-spacing mark (NSM) in the level run, and + // change the type of the NSM to the type of the previous + // character. If the NSM is at the start of the level run, it will + // get the type of sor. + for (var i$1 = 0, prev = outerType; i$1 < len; ++i$1) { + var type = types[i$1]; + if (type == "m") { types[i$1] = prev; } + else { prev = type; } + } + + // W2. Search backwards from each instance of a European number + // until the first strong type (R, L, AL, or sor) is found. If an + // AL is found, change the type of the European number to Arabic + // number. + // W3. Change all ALs to R. + for (var i$2 = 0, cur = outerType; i$2 < len; ++i$2) { + var type$1 = types[i$2]; + if (type$1 == "1" && cur == "r") { types[i$2] = "n"; } + else if (isStrong.test(type$1)) { cur = type$1; if (type$1 == "r") { types[i$2] = "R"; } } + } + + // W4. A single European separator between two European numbers + // changes to a European number. A single common separator between + // two numbers of the same type changes to that type. + for (var i$3 = 1, prev$1 = types[0]; i$3 < len - 1; ++i$3) { + var type$2 = types[i$3]; + if (type$2 == "+" && prev$1 == "1" && types[i$3+1] == "1") { types[i$3] = "1"; } + else if (type$2 == "," && prev$1 == types[i$3+1] && + (prev$1 == "1" || prev$1 == "n")) { types[i$3] = prev$1; } + prev$1 = type$2; + } + + // W5. A sequence of European terminators adjacent to European + // numbers changes to all European numbers. + // W6. Otherwise, separators and terminators change to Other + // Neutral. + for (var i$4 = 0; i$4 < len; ++i$4) { + var type$3 = types[i$4]; + if (type$3 == ",") { types[i$4] = "N"; } + else if (type$3 == "%") { + var end = (void 0); + for (end = i$4 + 1; end < len && types[end] == "%"; ++end) {} + var replace = (i$4 && types[i$4-1] == "!") || (end < len && types[end] == "1") ? "1" : "N"; + for (var j = i$4; j < end; ++j) { types[j] = replace; } + i$4 = end - 1; } - if (end >= upto) {text = text.slice(upto - pos); pos = upto; break} - pos = end - spanStartStyle = "" } - text = allText.slice(at, at = styles[i++]) - style = interpretTokenStyle(styles[i++], builder.cm.options) + + // W7. Search backwards from each instance of a European number + // until the first strong type (R, L, or sor) is found. If an L is + // found, then change the type of the European number to L. + for (var i$5 = 0, cur$1 = outerType; i$5 < len; ++i$5) { + var type$4 = types[i$5]; + if (cur$1 == "L" && type$4 == "1") { types[i$5] = "L"; } + else if (isStrong.test(type$4)) { cur$1 = type$4; } + } + + // N1. A sequence of neutrals takes the direction of the + // surrounding strong text if the text on both sides has the same + // direction. European and Arabic numbers act as if they were R in + // terms of their influence on neutrals. Start-of-level-run (sor) + // and end-of-level-run (eor) are used at level run boundaries. + // N2. Any remaining neutrals take the embedding direction. + for (var i$6 = 0; i$6 < len; ++i$6) { + if (isNeutral.test(types[i$6])) { + var end$1 = (void 0); + for (end$1 = i$6 + 1; end$1 < len && isNeutral.test(types[end$1]); ++end$1) {} + var before = (i$6 ? types[i$6-1] : outerType) == "L"; + var after = (end$1 < len ? types[end$1] : outerType) == "L"; + var replace$1 = before == after ? (before ? "L" : "R") : outerType; + for (var j$1 = i$6; j$1 < end$1; ++j$1) { types[j$1] = replace$1; } + i$6 = end$1 - 1; + } + } + + // Here we depart from the documented algorithm, in order to avoid + // building up an actual levels array. Since there are only three + // levels (0, 1, 2) in an implementation that doesn't take + // explicit embedding into account, we can build up the order on + // the fly, without following the level-based algorithm. + var order = [], m; + for (var i$7 = 0; i$7 < len;) { + if (countsAsLeft.test(types[i$7])) { + var start = i$7; + for (++i$7; i$7 < len && countsAsLeft.test(types[i$7]); ++i$7) {} + order.push(new BidiSpan(0, start, i$7)); + } else { + var pos = i$7, at = order.length; + for (++i$7; i$7 < len && types[i$7] != "L"; ++i$7) {} + for (var j$2 = pos; j$2 < i$7;) { + if (countsAsNum.test(types[j$2])) { + if (pos < j$2) { order.splice(at, 0, new BidiSpan(1, pos, j$2)); } + var nstart = j$2; + for (++j$2; j$2 < i$7 && countsAsNum.test(types[j$2]); ++j$2) {} + order.splice(at, 0, new BidiSpan(2, nstart, j$2)); + pos = j$2; + } else { ++j$2; } + } + if (pos < i$7) { order.splice(at, 0, new BidiSpan(1, pos, i$7)); } + } + } + if (direction == "ltr") { + if (order[0].level == 1 && (m = str.match(/^\s+/))) { + order[0].from = m[0].length; + order.unshift(new BidiSpan(0, 0, m[0].length)); + } + if (lst(order).level == 1 && (m = str.match(/\s+$/))) { + lst(order).to -= m[0].length; + order.push(new BidiSpan(0, len - m[0].length, len)); + } + } + + return direction == "rtl" ? order.reverse() : order } + })(); + + // Get the bidi ordering for the given line (and cache it). Returns + // false for lines that are fully left-to-right, and an array of + // BidiSpan objects otherwise. + function getOrder(line, direction) { + var order = line.order; + if (order == null) { order = line.order = bidiOrdering(line.text, direction); } + return order } -} + // EVENT HANDLING -// These objects are used to represent the visible (currently drawn) -// part of the document. A LineView may correspond to multiple -// logical lines, if those are connected by collapsed ranges. -function LineView(doc, line, lineN) { - // The starting line - this.line = line - // Continuing lines, if any - this.rest = visualLineContinued(line) - // Number of logical lines in this visual line - this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1 - this.node = this.text = null - this.hidden = lineIsHidden(doc, line) -} + // Lightweight event framework. on/off also work on DOM nodes, + // registering native DOM handlers. -// Create a range of LineView objects for the given lines. -function buildViewArray(cm, from, to) { - var array = [], nextPos - for (var pos = from; pos < to; pos = nextPos) { - var view = new LineView(cm.doc, getLine(cm.doc, pos), pos) - nextPos = pos + view.size - array.push(view) - } - return array -} + var noHandlers = []; -var operationGroup = null - -function pushOperation(op) { - if (operationGroup) { - operationGroup.ops.push(op) - } else { - op.ownsGroup = operationGroup = { - ops: [op], - delayedCallbacks: [] + var on = function(emitter, type, f) { + if (emitter.addEventListener) { + emitter.addEventListener(type, f, false); + } else if (emitter.attachEvent) { + emitter.attachEvent("on" + type, f); + } else { + var map$$1 = emitter._handlers || (emitter._handlers = {}); + map$$1[type] = (map$$1[type] || noHandlers).concat(f); } - } -} - -function fireCallbacksForOps(group) { - // Calls delayed callbacks and cursorActivity handlers until no - // new ones appear - var callbacks = group.delayedCallbacks, i = 0 - do { - for (; i < callbacks.length; i++) - { callbacks[i].call(null) } - for (var j = 0; j < group.ops.length; j++) { - var op = group.ops[j] - if (op.cursorActivityHandlers) - { while (op.cursorActivityCalled < op.cursorActivityHandlers.length) - { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm) } } - } - } while (i < callbacks.length) -} - -function finishOperation(op, endCb) { - var group = op.ownsGroup - if (!group) { return } - - try { fireCallbacksForOps(group) } - finally { - operationGroup = null - endCb(group) - } -} - -var orphanDelayedCallbacks = null - -// Often, we want to signal events at a point where we are in the -// middle of some work, but don't want the handler to start calling -// other methods on the editor, which might be in an inconsistent -// state or simply not expect any other events to happen. -// signalLater looks whether there are any handlers, and schedules -// them to be executed when the last operation ends, or, if no -// operation is active, when a timeout fires. -function signalLater(emitter, type /*, values...*/) { - var arr = getHandlers(emitter, type) - if (!arr.length) { return } - var args = Array.prototype.slice.call(arguments, 2), list - if (operationGroup) { - list = operationGroup.delayedCallbacks - } else if (orphanDelayedCallbacks) { - list = orphanDelayedCallbacks - } else { - list = orphanDelayedCallbacks = [] - setTimeout(fireOrphanDelayed, 0) - } - var loop = function ( i ) { - list.push(function () { return arr[i].apply(null, args); }) }; - for (var i = 0; i < arr.length; ++i) - loop( i ); -} - -function fireOrphanDelayed() { - var delayed = orphanDelayedCallbacks - orphanDelayedCallbacks = null - for (var i = 0; i < delayed.length; ++i) { delayed[i]() } -} - -// When an aspect of a line changes, a string is added to -// lineView.changes. This updates the relevant part of the line's -// DOM structure. -function updateLineForChanges(cm, lineView, lineN, dims) { - for (var j = 0; j < lineView.changes.length; j++) { - var type = lineView.changes[j] - if (type == "text") { updateLineText(cm, lineView) } - else if (type == "gutter") { updateLineGutter(cm, lineView, lineN, dims) } - else if (type == "class") { updateLineClasses(cm, lineView) } - else if (type == "widget") { updateLineWidgets(cm, lineView, dims) } + function getHandlers(emitter, type) { + return emitter._handlers && emitter._handlers[type] || noHandlers } - lineView.changes = null -} -// Lines with gutter elements, widgets or a background class need to -// be wrapped, and have the extra elements added to the wrapper div -function ensureLineWrapped(lineView) { - if (lineView.node == lineView.text) { - lineView.node = elt("div", null, null, "position: relative") - if (lineView.text.parentNode) - { lineView.text.parentNode.replaceChild(lineView.node, lineView.text) } - lineView.node.appendChild(lineView.text) - if (ie && ie_version < 8) { lineView.node.style.zIndex = 2 } - } - return lineView.node -} - -function updateLineBackground(cm, lineView) { - var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass - if (cls) { cls += " CodeMirror-linebackground" } - if (lineView.background) { - if (cls) { lineView.background.className = cls } - else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null } - } else if (cls) { - var wrap = ensureLineWrapped(lineView) - lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild) - cm.display.input.setUneditable(lineView.background) - } -} - -// Wrapper around buildLineContent which will reuse the structure -// in display.externalMeasured when possible. -function getLineContent(cm, lineView) { - var ext = cm.display.externalMeasured - if (ext && ext.line == lineView.line) { - cm.display.externalMeasured = null - lineView.measure = ext.measure - return ext.built - } - return buildLineContent(cm, lineView) -} - -// Redraw the line's text. Interacts with the background and text -// classes because the mode may output tokens that influence these -// classes. -function updateLineText(cm, lineView) { - var cls = lineView.text.className - var built = getLineContent(cm, lineView) - if (lineView.text == lineView.node) { lineView.node = built.pre } - lineView.text.parentNode.replaceChild(built.pre, lineView.text) - lineView.text = built.pre - if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) { - lineView.bgClass = built.bgClass - lineView.textClass = built.textClass - updateLineClasses(cm, lineView) - } else if (cls) { - lineView.text.className = cls - } -} - -function updateLineClasses(cm, lineView) { - updateLineBackground(cm, lineView) - if (lineView.line.wrapClass) - { ensureLineWrapped(lineView).className = lineView.line.wrapClass } - else if (lineView.node != lineView.text) - { lineView.node.className = "" } - var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass - lineView.text.className = textClass || "" -} - -function updateLineGutter(cm, lineView, lineN, dims) { - if (lineView.gutter) { - lineView.node.removeChild(lineView.gutter) - lineView.gutter = null - } - if (lineView.gutterBackground) { - lineView.node.removeChild(lineView.gutterBackground) - lineView.gutterBackground = null - } - if (lineView.line.gutterClass) { - var wrap = ensureLineWrapped(lineView) - lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass, - ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px; width: " + (dims.gutterTotalWidth) + "px")) - cm.display.input.setUneditable(lineView.gutterBackground) - wrap.insertBefore(lineView.gutterBackground, lineView.text) - } - var markers = lineView.line.gutterMarkers - if (cm.options.lineNumbers || markers) { - var wrap$1 = ensureLineWrapped(lineView) - var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px")) - cm.display.input.setUneditable(gutterWrap) - wrap$1.insertBefore(gutterWrap, lineView.text) - if (lineView.line.gutterClass) - { gutterWrap.className += " " + lineView.line.gutterClass } - if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) - { lineView.lineNumber = gutterWrap.appendChild( - elt("div", lineNumberFor(cm.options, lineN), - "CodeMirror-linenumber CodeMirror-gutter-elt", - ("left: " + (dims.gutterLeft["CodeMirror-linenumbers"]) + "px; width: " + (cm.display.lineNumInnerWidth) + "px"))) } - if (markers) { for (var k = 0; k < cm.options.gutters.length; ++k) { - var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id] - if (found) - { gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", - ("left: " + (dims.gutterLeft[id]) + "px; width: " + (dims.gutterWidth[id]) + "px"))) } - } } - } -} - -function updateLineWidgets(cm, lineView, dims) { - if (lineView.alignable) { lineView.alignable = null } - for (var node = lineView.node.firstChild, next = (void 0); node; node = next) { - next = node.nextSibling - if (node.className == "CodeMirror-linewidget") - { lineView.node.removeChild(node) } - } - insertLineWidgets(cm, lineView, dims) -} - -// Build a line's DOM representation from scratch -function buildLineElement(cm, lineView, lineN, dims) { - var built = getLineContent(cm, lineView) - lineView.text = lineView.node = built.pre - if (built.bgClass) { lineView.bgClass = built.bgClass } - if (built.textClass) { lineView.textClass = built.textClass } - - updateLineClasses(cm, lineView) - updateLineGutter(cm, lineView, lineN, dims) - insertLineWidgets(cm, lineView, dims) - return lineView.node -} - -// A lineView may contain multiple logical lines (when merged by -// collapsed spans). The widgets for all of them need to be drawn. -function insertLineWidgets(cm, lineView, dims) { - insertLineWidgetsFor(cm, lineView.line, lineView, dims, true) - if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++) - { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false) } } -} - -function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) { - if (!line.widgets) { return } - var wrap = ensureLineWrapped(lineView) - for (var i = 0, ws = line.widgets; i < ws.length; ++i) { - var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget") - if (!widget.handleMouseEvents) { node.setAttribute("cm-ignore-events", "true") } - positionLineWidget(widget, node, lineView, dims) - cm.display.input.setUneditable(node) - if (allowAbove && widget.above) - { wrap.insertBefore(node, lineView.gutter || lineView.text) } - else - { wrap.appendChild(node) } - signalLater(widget, "redraw") - } -} - -function positionLineWidget(widget, node, lineView, dims) { - if (widget.noHScroll) { - ;(lineView.alignable || (lineView.alignable = [])).push(node) - var width = dims.wrapperWidth - node.style.left = dims.fixedPos + "px" - if (!widget.coverGutter) { - width -= dims.gutterTotalWidth - node.style.paddingLeft = dims.gutterTotalWidth + "px" - } - node.style.width = width + "px" - } - if (widget.coverGutter) { - node.style.zIndex = 5 - node.style.position = "relative" - if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + "px" } - } -} - -function widgetHeight(widget) { - if (widget.height != null) { return widget.height } - var cm = widget.doc.cm - if (!cm) { return 0 } - if (!contains(document.body, widget.node)) { - var parentStyle = "position: relative;" - if (widget.coverGutter) - { parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;" } - if (widget.noHScroll) - { parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;" } - removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle)) - } - return widget.height = widget.node.parentNode.offsetHeight -} - -// Return true when the given mouse event happened in a widget -function eventInWidget(display, e) { - for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { - if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") || - (n.parentNode == display.sizer && n != display.mover)) - { return true } - } -} - -// POSITION MEASUREMENT - -function paddingTop(display) {return display.lineSpace.offsetTop} -function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight} -function paddingH(display) { - if (display.cachedPaddingH) { return display.cachedPaddingH } - var e = removeChildrenAndAdd(display.measure, elt("pre", "x")) - var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle - var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)} - if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data } - return data -} - -function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth } -function displayWidth(cm) { - return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth -} -function displayHeight(cm) { - return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight -} - -// Ensure the lineView.wrapping.heights array is populated. This is -// an array of bottom offsets for the lines that make up a drawn -// line. When lineWrapping is on, there might be more than one -// height. -function ensureLineHeights(cm, lineView, rect) { - var wrapping = cm.options.lineWrapping - var curWidth = wrapping && displayWidth(cm) - if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) { - var heights = lineView.measure.heights = [] - if (wrapping) { - lineView.measure.width = curWidth - var rects = lineView.text.firstChild.getClientRects() - for (var i = 0; i < rects.length - 1; i++) { - var cur = rects[i], next = rects[i + 1] - if (Math.abs(cur.bottom - next.bottom) > 2) - { heights.push((cur.bottom + next.top) / 2 - rect.top) } + function off(emitter, type, f) { + if (emitter.removeEventListener) { + emitter.removeEventListener(type, f, false); + } else if (emitter.detachEvent) { + emitter.detachEvent("on" + type, f); + } else { + var map$$1 = emitter._handlers, arr = map$$1 && map$$1[type]; + if (arr) { + var index = indexOf(arr, f); + if (index > -1) + { map$$1[type] = arr.slice(0, index).concat(arr.slice(index + 1)); } } } - heights.push(rect.bottom - rect.top) } -} -// Find a line map (mapping character offsets to text nodes) and a -// measurement cache for the given line number. (A line view might -// contain multiple lines when collapsed ranges are present.) -function mapFromLineView(lineView, line, lineN) { - if (lineView.line == line) - { return {map: lineView.measure.map, cache: lineView.measure.cache} } - for (var i = 0; i < lineView.rest.length; i++) - { if (lineView.rest[i] == line) - { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } } - for (var i$1 = 0; i$1 < lineView.rest.length; i$1++) - { if (lineNo(lineView.rest[i$1]) > lineN) - { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } } -} - -// Render a line into the hidden node display.externalMeasured. Used -// when measurement is needed for a line that's not in the viewport. -function updateExternalMeasurement(cm, line) { - line = visualLine(line) - var lineN = lineNo(line) - var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN) - view.lineN = lineN - var built = view.built = buildLineContent(cm, view) - view.text = built.pre - removeChildrenAndAdd(cm.display.lineMeasure, built.pre) - return view -} - -// Get a {top, bottom, left, right} box (in line-local coordinates) -// for a given character. -function measureChar(cm, line, ch, bias) { - return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias) -} - -// Find a line view that corresponds to the given line number. -function findViewForLine(cm, lineN) { - if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo) - { return cm.display.view[findViewIndex(cm, lineN)] } - var ext = cm.display.externalMeasured - if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size) - { return ext } -} - -// Measurement can be split in two steps, the set-up work that -// applies to the whole line, and the measurement of the actual -// character. Functions like coordsChar, that need to do a lot of -// measurements in a row, can thus ensure that the set-up work is -// only done once. -function prepareMeasureForLine(cm, line) { - var lineN = lineNo(line) - var view = findViewForLine(cm, lineN) - if (view && !view.text) { - view = null - } else if (view && view.changes) { - updateLineForChanges(cm, view, lineN, getDimensions(cm)) - cm.curOp.forceUpdate = true + function signal(emitter, type /*, values...*/) { + var handlers = getHandlers(emitter, type); + if (!handlers.length) { return } + var args = Array.prototype.slice.call(arguments, 2); + for (var i = 0; i < handlers.length; ++i) { handlers[i].apply(null, args); } } - if (!view) - { view = updateExternalMeasurement(cm, line) } - var info = mapFromLineView(view, line, lineN) - return { - line: line, view: view, rect: null, - map: info.map, cache: info.cache, before: info.before, - hasHeights: false + // The DOM events that CodeMirror handles can be overridden by + // registering a (non-DOM) handler on the editor for the event name, + // and preventDefault-ing the event in that handler. + function signalDOMEvent(cm, e, override) { + if (typeof e == "string") + { e = {type: e, preventDefault: function() { this.defaultPrevented = true; }}; } + signal(cm, override || e.type, cm, e); + return e_defaultPrevented(e) || e.codemirrorIgnore } -} -// Given a prepared measurement object, measures the position of an -// actual character (or fetches it from the cache). -function measureCharPrepared(cm, prepared, ch, bias, varHeight) { - if (prepared.before) { ch = -1 } - var key = ch + (bias || ""), found - if (prepared.cache.hasOwnProperty(key)) { - found = prepared.cache[key] - } else { - if (!prepared.rect) - { prepared.rect = prepared.view.text.getBoundingClientRect() } - if (!prepared.hasHeights) { - ensureLineHeights(cm, prepared.view, prepared.rect) - prepared.hasHeights = true + function signalCursorActivity(cm) { + var arr = cm._handlers && cm._handlers.cursorActivity; + if (!arr) { return } + var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []); + for (var i = 0; i < arr.length; ++i) { if (indexOf(set, arr[i]) == -1) + { set.push(arr[i]); } } + } + + function hasHandler(emitter, type) { + return getHandlers(emitter, type).length > 0 + } + + // Add on and off methods to a constructor's prototype, to make + // registering events on such objects more convenient. + function eventMixin(ctor) { + ctor.prototype.on = function(type, f) {on(this, type, f);}; + ctor.prototype.off = function(type, f) {off(this, type, f);}; + } + + // Due to the fact that we still support jurassic IE versions, some + // compatibility wrappers are needed. + + function e_preventDefault(e) { + if (e.preventDefault) { e.preventDefault(); } + else { e.returnValue = false; } + } + function e_stopPropagation(e) { + if (e.stopPropagation) { e.stopPropagation(); } + else { e.cancelBubble = true; } + } + function e_defaultPrevented(e) { + return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false + } + function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);} + + function e_target(e) {return e.target || e.srcElement} + function e_button(e) { + var b = e.which; + if (b == null) { + if (e.button & 1) { b = 1; } + else if (e.button & 2) { b = 3; } + else if (e.button & 4) { b = 2; } } - found = measureCharInner(cm, prepared, ch, bias) - if (!found.bogus) { prepared.cache[key] = found } + if (mac && e.ctrlKey && b == 1) { b = 3; } + return b } - return {left: found.left, right: found.right, - top: varHeight ? found.rtop : found.top, - bottom: varHeight ? found.rbottom : found.bottom} -} -var nullRect = {left: 0, right: 0, top: 0, bottom: 0} + // Detect drag-and-drop + var dragAndDrop = function() { + // There is *some* kind of drag-and-drop support in IE6-8, but I + // couldn't get it to work yet. + if (ie && ie_version < 9) { return false } + var div = elt('div'); + return "draggable" in div || "dragDrop" in div + }(); -function nodeAndOffsetInLineMap(map, ch, bias) { - var node, start, end, collapse, mStart, mEnd - // First, search the line map for the text node corresponding to, - // or closest to, the target character. - for (var i = 0; i < map.length; i += 3) { - mStart = map[i] - mEnd = map[i + 1] - if (ch < mStart) { - start = 0; end = 1 - collapse = "left" - } else if (ch < mEnd) { - start = ch - mStart - end = start + 1 - } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) { - end = mEnd - mStart - start = end - 1 - if (ch >= mEnd) { collapse = "right" } + var zwspSupported; + function zeroWidthElement(measure) { + if (zwspSupported == null) { + var test = elt("span", "\u200b"); + removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])); + if (measure.firstChild.offsetHeight != 0) + { zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8); } } - if (start != null) { - node = map[i + 2] - if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right")) - { collapse = bias } - if (bias == "left" && start == 0) - { while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) { - node = map[(i -= 3) + 2] - collapse = "left" - } } - if (bias == "right" && start == mEnd - mStart) - { while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) { - node = map[(i += 3) + 2] - collapse = "right" - } } - break - } - } - return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd} -} - -function getUsefulRect(rects, bias) { - var rect = nullRect - if (bias == "left") { for (var i = 0; i < rects.length; i++) { - if ((rect = rects[i]).left != rect.right) { break } - } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) { - if ((rect = rects[i$1]).left != rect.right) { break } - } } - return rect -} - -function measureCharInner(cm, prepared, ch, bias) { - var place = nodeAndOffsetInLineMap(prepared.map, ch, bias) - var node = place.node, start = place.start, end = place.end, collapse = place.collapse - - var rect - if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates. - for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned - while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start } - while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end } - if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) - { rect = node.parentNode.getBoundingClientRect() } - else - { rect = getUsefulRect(range(node, start, end).getClientRects(), bias) } - if (rect.left || rect.right || start == 0) { break } - end = start - start = start - 1 - collapse = "right" - } - if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect) } - } else { // If it is a widget, simply get the box for the whole widget. - if (start > 0) { collapse = bias = "right" } - var rects - if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1) - { rect = rects[bias == "right" ? rects.length - 1 : 0] } - else - { rect = node.getBoundingClientRect() } - } - if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) { - var rSpan = node.parentNode.getClientRects()[0] - if (rSpan) - { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom} } - else - { rect = nullRect } + var node = zwspSupported ? elt("span", "\u200b") : + elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); + node.setAttribute("cm-text", ""); + return node } - var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top - var mid = (rtop + rbot) / 2 - var heights = prepared.view.measure.heights - var i = 0 - for (; i < heights.length - 1; i++) - { if (mid < heights[i]) { break } } - var top = i ? heights[i - 1] : 0, bot = heights[i] - var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left, - right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left, - top: top, bottom: bot} - if (!rect.left && !rect.right) { result.bogus = true } - if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot } - - return result -} - -// Work around problem with bounding client rects on ranges being -// returned incorrectly when zoomed on IE10 and below. -function maybeUpdateRectForZooming(measure, rect) { - if (!window.screen || screen.logicalXDPI == null || - screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure)) - { return rect } - var scaleX = screen.logicalXDPI / screen.deviceXDPI - var scaleY = screen.logicalYDPI / screen.deviceYDPI - return {left: rect.left * scaleX, right: rect.right * scaleX, - top: rect.top * scaleY, bottom: rect.bottom * scaleY} -} - -function clearLineMeasurementCacheFor(lineView) { - if (lineView.measure) { - lineView.measure.cache = {} - lineView.measure.heights = null - if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++) - { lineView.measure.caches[i] = {} } } - } -} - -function clearLineMeasurementCache(cm) { - cm.display.externalMeasure = null - removeChildren(cm.display.lineMeasure) - for (var i = 0; i < cm.display.view.length; i++) - { clearLineMeasurementCacheFor(cm.display.view[i]) } -} - -function clearCaches(cm) { - clearLineMeasurementCache(cm) - cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null - if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true } - cm.display.lineNumChars = null -} - -function pageScrollX() { - // Work around https://bugs.chromium.org/p/chromium/issues/detail?id=489206 - // which causes page_Offset and bounding client rects to use - // different reference viewports and invalidate our calculations. - if (chrome && android) { return -(document.body.getBoundingClientRect().left - parseInt(getComputedStyle(document.body).marginLeft)) } - return window.pageXOffset || (document.documentElement || document.body).scrollLeft -} -function pageScrollY() { - if (chrome && android) { return -(document.body.getBoundingClientRect().top - parseInt(getComputedStyle(document.body).marginTop)) } - return window.pageYOffset || (document.documentElement || document.body).scrollTop -} - -function widgetTopHeight(lineObj) { - var height = 0 - if (lineObj.widgets) { for (var i = 0; i < lineObj.widgets.length; ++i) { if (lineObj.widgets[i].above) - { height += widgetHeight(lineObj.widgets[i]) } } } - return height -} - -// Converts a {top, bottom, left, right} box from line-local -// coordinates into another coordinate system. Context may be one of -// "line", "div" (display.lineDiv), "local"./null (editor), "window", -// or "page". -function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) { - if (!includeWidgets) { - var height = widgetTopHeight(lineObj) - rect.top += height; rect.bottom += height - } - if (context == "line") { return rect } - if (!context) { context = "local" } - var yOff = heightAtLine(lineObj) - if (context == "local") { yOff += paddingTop(cm.display) } - else { yOff -= cm.display.viewOffset } - if (context == "page" || context == "window") { - var lOff = cm.display.lineSpace.getBoundingClientRect() - yOff += lOff.top + (context == "window" ? 0 : pageScrollY()) - var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()) - rect.left += xOff; rect.right += xOff - } - rect.top += yOff; rect.bottom += yOff - return rect -} - -// Coverts a box from "div" coords to another coordinate system. -// Context may be "window", "page", "div", or "local"./null. -function fromCoordSystem(cm, coords, context) { - if (context == "div") { return coords } - var left = coords.left, top = coords.top - // First move into "page" coordinate system - if (context == "page") { - left -= pageScrollX() - top -= pageScrollY() - } else if (context == "local" || !context) { - var localBox = cm.display.sizer.getBoundingClientRect() - left += localBox.left - top += localBox.top + // Feature-detect IE's crummy client rect reporting for bidi text + var badBidiRects; + function hasBadBidiRects(measure) { + if (badBidiRects != null) { return badBidiRects } + var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA")); + var r0 = range(txt, 0, 1).getBoundingClientRect(); + var r1 = range(txt, 1, 2).getBoundingClientRect(); + removeChildren(measure); + if (!r0 || r0.left == r0.right) { return false } // Safari returns null in some cases (#2780) + return badBidiRects = (r1.right - r0.right < 3) } - var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect() - return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top} -} - -function charCoords(cm, pos, context, lineObj, bias) { - if (!lineObj) { lineObj = getLine(cm.doc, pos.line) } - return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context) -} - -// Returns a box for a given cursor position, which may have an -// 'other' property containing the position of the secondary cursor -// on a bidi boundary. -// A cursor Pos(line, char, "before") is on the same visual line as `char - 1` -// and after `char - 1` in writing order of `char - 1` -// A cursor Pos(line, char, "after") is on the same visual line as `char` -// and before `char` in writing order of `char` -// Examples (upper-case letters are RTL, lower-case are LTR): -// Pos(0, 1, ...) -// before after -// ab a|b a|b -// aB a|B aB| -// Ab |Ab A|b -// AB B|A B|A -// Every position after the last character on a line is considered to stick -// to the last character on the line. -function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) { - lineObj = lineObj || getLine(cm.doc, pos.line) - if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj) } - function get(ch, right) { - var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight) - if (right) { m.left = m.right; } else { m.right = m.left } - return intoCoordSystem(cm, lineObj, m, context) - } - var order = getOrder(lineObj, cm.doc.direction), ch = pos.ch, sticky = pos.sticky - if (ch >= lineObj.text.length) { - ch = lineObj.text.length - sticky = "before" - } else if (ch <= 0) { - ch = 0 - sticky = "after" - } - if (!order) { return get(sticky == "before" ? ch - 1 : ch, sticky == "before") } - - function getBidi(ch, partPos, invert) { - var part = order[partPos], right = part.level == 1 - return get(invert ? ch - 1 : ch, right != invert) - } - var partPos = getBidiPartAt(order, ch, sticky) - var other = bidiOther - var val = getBidi(ch, partPos, sticky == "before") - if (other != null) { val.other = getBidi(ch, other, sticky != "before") } - return val -} - -// Used to cheaply estimate the coordinates for a position. Used for -// intermediate scroll updates. -function estimateCoords(cm, pos) { - var left = 0 - pos = clipPos(cm.doc, pos) - if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch } - var lineObj = getLine(cm.doc, pos.line) - var top = heightAtLine(lineObj) + paddingTop(cm.display) - return {left: left, right: left, top: top, bottom: top + lineObj.height} -} - -// Positions returned by coordsChar contain some extra information. -// xRel is the relative x position of the input coordinates compared -// to the found position (so xRel > 0 means the coordinates are to -// the right of the character position, for example). When outside -// is true, that means the coordinates lie outside the line's -// vertical range. -function PosWithInfo(line, ch, sticky, outside, xRel) { - var pos = Pos(line, ch, sticky) - pos.xRel = xRel - if (outside) { pos.outside = true } - return pos -} - -// Compute the character position closest to the given coordinates. -// Input must be lineSpace-local ("div" coordinate system). -function coordsChar(cm, x, y) { - var doc = cm.doc - y += cm.display.viewOffset - if (y < 0) { return PosWithInfo(doc.first, 0, null, true, -1) } - var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1 - if (lineN > last) - { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, true, 1) } - if (x < 0) { x = 0 } - - var lineObj = getLine(doc, lineN) - for (;;) { - var found = coordsCharInner(cm, lineObj, lineN, x, y) - var collapsed = collapsedSpanAround(lineObj, found.ch + (found.xRel > 0 ? 1 : 0)) - if (!collapsed) { return found } - var rangeEnd = collapsed.find(1) - if (rangeEnd.line == lineN) { return rangeEnd } - lineObj = getLine(doc, lineN = rangeEnd.line) - } -} - -function wrappedLineExtent(cm, lineObj, preparedMeasure, y) { - y -= widgetTopHeight(lineObj) - var end = lineObj.text.length - var begin = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch - 1).bottom <= y; }, end, 0) - end = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch).top > y; }, begin, end) - return {begin: begin, end: end} -} - -function wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) { - if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj) } - var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), "line").top - return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop) -} - -// Returns true if the given side of a box is after the given -// coordinates, in top-to-bottom, left-to-right order. -function boxIsAfter(box, x, y, left) { - return box.bottom <= y ? false : box.top > y ? true : (left ? box.left : box.right) > x -} - -function coordsCharInner(cm, lineObj, lineNo, x, y) { - // Move y into line-local coordinate space - y -= heightAtLine(lineObj) - var preparedMeasure = prepareMeasureForLine(cm, lineObj) - // When directly calling `measureCharPrepared`, we have to adjust - // for the widgets at this line. - var widgetHeight = widgetTopHeight(lineObj) - var begin = 0, end = lineObj.text.length, ltr = true - - var order = getOrder(lineObj, cm.doc.direction) - // If the line isn't plain left-to-right text, first figure out - // which bidi section the coordinates fall into. - if (order) { - var part = (cm.options.lineWrapping ? coordsBidiPartWrapped : coordsBidiPart) - (cm, lineObj, lineNo, preparedMeasure, order, x, y) - ltr = part.level != 1 - // The awkward -1 offsets are needed because findFirst (called - // on these below) will treat its first bound as inclusive, - // second as exclusive, but we want to actually address the - // characters in the part's range - begin = ltr ? part.from : part.to - 1 - end = ltr ? part.to : part.from - 1 - } - - // A binary search to find the first character whose bounding box - // starts after the coordinates. If we run across any whose box wrap - // the coordinates, store that. - var chAround = null, boxAround = null - var ch = findFirst(function (ch) { - var box = measureCharPrepared(cm, preparedMeasure, ch) - box.top += widgetHeight; box.bottom += widgetHeight - if (!boxIsAfter(box, x, y, false)) { return false } - if (box.top <= y && box.left <= x) { - chAround = ch - boxAround = box - } - return true - }, begin, end) - - var baseX, sticky, outside = false - // If a box around the coordinates was found, use that - if (boxAround) { - // Distinguish coordinates nearer to the left or right side of the box - var atLeft = x - boxAround.left < boxAround.right - x, atStart = atLeft == ltr - ch = chAround + (atStart ? 0 : 1) - sticky = atStart ? "after" : "before" - baseX = atLeft ? boxAround.left : boxAround.right - } else { - // (Adjust for extended bound, if necessary.) - if (!ltr && (ch == end || ch == begin)) { ch++ } - // To determine which side to associate with, get the box to the - // left of the character and compare it's vertical position to the - // coordinates - sticky = ch == 0 ? "after" : ch == lineObj.text.length ? "before" : - (measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight <= y) == ltr ? - "after" : "before" - // Now get accurate coordinates for this place, in order to get a - // base X position - var coords = cursorCoords(cm, Pos(lineNo, ch, sticky), "line", lineObj, preparedMeasure) - baseX = coords.left - outside = y < coords.top || y >= coords.bottom - } - - ch = skipExtendingChars(lineObj.text, ch, 1) - return PosWithInfo(lineNo, ch, sticky, outside, x - baseX) -} - -function coordsBidiPart(cm, lineObj, lineNo, preparedMeasure, order, x, y) { - // Bidi parts are sorted left-to-right, and in a non-line-wrapping - // situation, we can take this ordering to correspond to the visual - // ordering. This finds the first part whose end is after the given - // coordinates. - var index = findFirst(function (i) { - var part = order[i], ltr = part.level != 1 - return boxIsAfter(cursorCoords(cm, Pos(lineNo, ltr ? part.to : part.from, ltr ? "before" : "after"), - "line", lineObj, preparedMeasure), x, y, true) - }, 0, order.length - 1) - var part = order[index] - // If this isn't the first part, the part's start is also after - // the coordinates, and the coordinates aren't on the same line as - // that start, move one part back. - if (index > 0) { - var ltr = part.level != 1 - var start = cursorCoords(cm, Pos(lineNo, ltr ? part.from : part.to, ltr ? "after" : "before"), - "line", lineObj, preparedMeasure) - if (boxIsAfter(start, x, y, true) && start.top > y) - { part = order[index - 1] } - } - return part -} - -function coordsBidiPartWrapped(cm, lineObj, _lineNo, preparedMeasure, order, x, y) { - // In a wrapped line, rtl text on wrapping boundaries can do things - // that don't correspond to the ordering in our `order` array at - // all, so a binary search doesn't work, and we want to return a - // part that only spans one line so that the binary search in - // coordsCharInner is safe. As such, we first find the extent of the - // wrapped line, and then do a flat search in which we discard any - // spans that aren't on the line. - var ref = wrappedLineExtent(cm, lineObj, preparedMeasure, y); - var begin = ref.begin; - var end = ref.end; - if (/\s/.test(lineObj.text.charAt(end - 1))) { end-- } - var part = null, closestDist = null - for (var i = 0; i < order.length; i++) { - var p = order[i] - if (p.from >= end || p.to <= begin) { continue } - var ltr = p.level != 1 - var endX = measureCharPrepared(cm, preparedMeasure, ltr ? Math.min(end, p.to) - 1 : Math.max(begin, p.from)).right - // Weigh against spans ending before this, so that they are only - // picked if nothing ends after - var dist = endX < x ? x - endX + 1e9 : endX - x - if (!part || closestDist > dist) { - part = p - closestDist = dist - } - } - if (!part) { part = order[order.length - 1] } - // Clip the part to the wrapped line. - if (part.from < begin) { part = {from: begin, to: part.to, level: part.level} } - if (part.to > end) { part = {from: part.from, to: end, level: part.level} } - return part -} - -var measureText -// Compute the default text height. -function textHeight(display) { - if (display.cachedTextHeight != null) { return display.cachedTextHeight } - if (measureText == null) { - measureText = elt("pre") - // Measure a bunch of lines, for browsers that compute - // fractional heights. - for (var i = 0; i < 49; ++i) { - measureText.appendChild(document.createTextNode("x")) - measureText.appendChild(elt("br")) - } - measureText.appendChild(document.createTextNode("x")) - } - removeChildrenAndAdd(display.measure, measureText) - var height = measureText.offsetHeight / 50 - if (height > 3) { display.cachedTextHeight = height } - removeChildren(display.measure) - return height || 1 -} - -// Compute the default character width. -function charWidth(display) { - if (display.cachedCharWidth != null) { return display.cachedCharWidth } - var anchor = elt("span", "xxxxxxxxxx") - var pre = elt("pre", [anchor]) - removeChildrenAndAdd(display.measure, pre) - var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10 - if (width > 2) { display.cachedCharWidth = width } - return width || 10 -} - -// Do a bulk-read of the DOM positions and sizes needed to draw the -// view, so that we don't interleave reading and writing to the DOM. -function getDimensions(cm) { - var d = cm.display, left = {}, width = {} - var gutterLeft = d.gutters.clientLeft - for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { - left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft - width[cm.options.gutters[i]] = n.clientWidth - } - return {fixedPos: compensateForHScroll(d), - gutterTotalWidth: d.gutters.offsetWidth, - gutterLeft: left, - gutterWidth: width, - wrapperWidth: d.wrapper.clientWidth} -} - -// Computes display.scroller.scrollLeft + display.gutters.offsetWidth, -// but using getBoundingClientRect to get a sub-pixel-accurate -// result. -function compensateForHScroll(display) { - return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left -} - -// Returns a function that estimates the height of a line, to use as -// first approximation until the line becomes visible (and is thus -// properly measurable). -function estimateHeight(cm) { - var th = textHeight(cm.display), wrapping = cm.options.lineWrapping - var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3) - return function (line) { - if (lineIsHidden(cm.doc, line)) { return 0 } - - var widgetsHeight = 0 - if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) { - if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height } - } } - - if (wrapping) - { return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th } - else - { return widgetsHeight + th } - } -} - -function estimateLineHeights(cm) { - var doc = cm.doc, est = estimateHeight(cm) - doc.iter(function (line) { - var estHeight = est(line) - if (estHeight != line.height) { updateLineHeight(line, estHeight) } - }) -} - -// Given a mouse event, find the corresponding position. If liberal -// is false, it checks whether a gutter or scrollbar was clicked, -// and returns null if it was. forRect is used by rectangular -// selections, and tries to estimate a character position even for -// coordinates beyond the right of the text. -function posFromMouse(cm, e, liberal, forRect) { - var display = cm.display - if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") { return null } - - var x, y, space = display.lineSpace.getBoundingClientRect() - // Fails unpredictably on IE[67] when mouse is dragged around quickly. - try { x = e.clientX - space.left; y = e.clientY - space.top } - catch (e) { return null } - var coords = coordsChar(cm, x, y), line - if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) { - var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length - coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff)) - } - return coords -} - -// Find the view element corresponding to a given line. Return null -// when the line isn't visible. -function findViewIndex(cm, n) { - if (n >= cm.display.viewTo) { return null } - n -= cm.display.viewFrom - if (n < 0) { return null } - var view = cm.display.view - for (var i = 0; i < view.length; i++) { - n -= view[i].size - if (n < 0) { return i } - } -} - -function updateSelection(cm) { - cm.display.input.showSelection(cm.display.input.prepareSelection()) -} - -function prepareSelection(cm, primary) { - if ( primary === void 0 ) primary = true; - - var doc = cm.doc, result = {} - var curFragment = result.cursors = document.createDocumentFragment() - var selFragment = result.selection = document.createDocumentFragment() - - for (var i = 0; i < doc.sel.ranges.length; i++) { - if (!primary && i == doc.sel.primIndex) { continue } - var range = doc.sel.ranges[i] - if (range.from().line >= cm.display.viewTo || range.to().line < cm.display.viewFrom) { continue } - var collapsed = range.empty() - if (collapsed || cm.options.showCursorWhenSelecting) - { drawSelectionCursor(cm, range.head, curFragment) } - if (!collapsed) - { drawSelectionRange(cm, range, selFragment) } - } - return result -} - -// Draws a cursor for the given range -function drawSelectionCursor(cm, head, output) { - var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine) - - var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor")) - cursor.style.left = pos.left + "px" - cursor.style.top = pos.top + "px" - cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px" - - if (pos.other) { - // Secondary cursor, shown when on a 'jump' in bi-directional text - var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor")) - otherCursor.style.display = "" - otherCursor.style.left = pos.other.left + "px" - otherCursor.style.top = pos.other.top + "px" - otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px" - } -} - -function cmpCoords(a, b) { return a.top - b.top || a.left - b.left } - -// Draws the given range as a highlighted selection -function drawSelectionRange(cm, range, output) { - var display = cm.display, doc = cm.doc - var fragment = document.createDocumentFragment() - var padding = paddingH(cm.display), leftSide = padding.left - var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right - var docLTR = doc.direction == "ltr" - - function add(left, top, width, bottom) { - if (top < 0) { top = 0 } - top = Math.round(top) - bottom = Math.round(bottom) - fragment.appendChild(elt("div", null, "CodeMirror-selected", ("position: absolute; left: " + left + "px;\n top: " + top + "px; width: " + (width == null ? rightSide - left : width) + "px;\n height: " + (bottom - top) + "px"))) - } - - function drawForLine(line, fromArg, toArg) { - var lineObj = getLine(doc, line) - var lineLen = lineObj.text.length - var start, end - function coords(ch, bias) { - return charCoords(cm, Pos(line, ch), "div", lineObj, bias) - } - - function wrapX(pos, dir, side) { - var extent = wrappedLineExtentChar(cm, lineObj, null, pos) - var prop = (dir == "ltr") == (side == "after") ? "left" : "right" - var ch = side == "after" ? extent.begin : extent.end - (/\s/.test(lineObj.text.charAt(extent.end - 1)) ? 2 : 1) - return coords(ch, prop)[prop] - } - - var order = getOrder(lineObj, doc.direction) - iterateBidiSections(order, fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir, i) { - var ltr = dir == "ltr" - var fromPos = coords(from, ltr ? "left" : "right") - var toPos = coords(to - 1, ltr ? "right" : "left") - - var openStart = fromArg == null && from == 0, openEnd = toArg == null && to == lineLen - var first = i == 0, last = !order || i == order.length - 1 - if (toPos.top - fromPos.top <= 3) { // Single line - var openLeft = (docLTR ? openStart : openEnd) && first - var openRight = (docLTR ? openEnd : openStart) && last - var left = openLeft ? leftSide : (ltr ? fromPos : toPos).left - var right = openRight ? rightSide : (ltr ? toPos : fromPos).right - add(left, fromPos.top, right - left, fromPos.bottom) - } else { // Multiple lines - var topLeft, topRight, botLeft, botRight - if (ltr) { - topLeft = docLTR && openStart && first ? leftSide : fromPos.left - topRight = docLTR ? rightSide : wrapX(from, dir, "before") - botLeft = docLTR ? leftSide : wrapX(to, dir, "after") - botRight = docLTR && openEnd && last ? rightSide : toPos.right - } else { - topLeft = !docLTR ? leftSide : wrapX(from, dir, "before") - topRight = !docLTR && openStart && first ? rightSide : fromPos.right - botLeft = !docLTR && openEnd && last ? leftSide : toPos.left - botRight = !docLTR ? rightSide : wrapX(to, dir, "after") - } - add(topLeft, fromPos.top, topRight - topLeft, fromPos.bottom) - if (fromPos.bottom < toPos.top) { add(leftSide, fromPos.bottom, null, toPos.top) } - add(botLeft, toPos.top, botRight - botLeft, toPos.bottom) - } - - if (!start || cmpCoords(fromPos, start) < 0) { start = fromPos } - if (cmpCoords(toPos, start) < 0) { start = toPos } - if (!end || cmpCoords(fromPos, end) < 0) { end = fromPos } - if (cmpCoords(toPos, end) < 0) { end = toPos } - }) - return {start: start, end: end} - } - - var sFrom = range.from(), sTo = range.to() - if (sFrom.line == sTo.line) { - drawForLine(sFrom.line, sFrom.ch, sTo.ch) - } else { - var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line) - var singleVLine = visualLine(fromLine) == visualLine(toLine) - var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end - var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start - if (singleVLine) { - if (leftEnd.top < rightStart.top - 2) { - add(leftEnd.right, leftEnd.top, null, leftEnd.bottom) - add(leftSide, rightStart.top, rightStart.left, rightStart.bottom) + // See if "".split is the broken IE version, if so, provide an + // alternative way to split lines. + var splitLinesAuto = "\n\nb".split(/\n/).length != 3 ? function (string) { + var pos = 0, result = [], l = string.length; + while (pos <= l) { + var nl = string.indexOf("\n", pos); + if (nl == -1) { nl = string.length; } + var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl); + var rt = line.indexOf("\r"); + if (rt != -1) { + result.push(line.slice(0, rt)); + pos += rt + 1; } else { - add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom) + result.push(line); + pos = nl + 1; } } - if (leftEnd.bottom < rightStart.top) - { add(leftSide, leftEnd.bottom, null, rightStart.top) } + return result + } : function (string) { return string.split(/\r\n?|\n/); }; + + var hasSelection = window.getSelection ? function (te) { + try { return te.selectionStart != te.selectionEnd } + catch(e) { return false } + } : function (te) { + var range$$1; + try {range$$1 = te.ownerDocument.selection.createRange();} + catch(e) {} + if (!range$$1 || range$$1.parentElement() != te) { return false } + return range$$1.compareEndPoints("StartToEnd", range$$1) != 0 + }; + + var hasCopyEvent = (function () { + var e = elt("div"); + if ("oncopy" in e) { return true } + e.setAttribute("oncopy", "return;"); + return typeof e.oncopy == "function" + })(); + + var badZoomedRects = null; + function hasBadZoomedRects(measure) { + if (badZoomedRects != null) { return badZoomedRects } + var node = removeChildrenAndAdd(measure, elt("span", "x")); + var normal = node.getBoundingClientRect(); + var fromRange = range(node, 0, 1).getBoundingClientRect(); + return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1 } - output.appendChild(fragment) -} + // Known modes, by name and by MIME + var modes = {}, mimeModes = {}; -// Cursor-blinking -function restartBlink(cm) { - if (!cm.state.focused) { return } - var display = cm.display - clearInterval(display.blinker) - var on = true - display.cursorDiv.style.visibility = "" - if (cm.options.cursorBlinkRate > 0) - { display.blinker = setInterval(function () { return display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"; }, - cm.options.cursorBlinkRate) } - else if (cm.options.cursorBlinkRate < 0) - { display.cursorDiv.style.visibility = "hidden" } -} + // Extra arguments are stored as the mode's dependencies, which is + // used by (legacy) mechanisms like loadmode.js to automatically + // load a mode. (Preferred mechanism is the require/define calls.) + function defineMode(name, mode) { + if (arguments.length > 2) + { mode.dependencies = Array.prototype.slice.call(arguments, 2); } + modes[name] = mode; + } -function ensureFocus(cm) { - if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm) } -} + function defineMIME(mime, spec) { + mimeModes[mime] = spec; + } -function delayBlurEvent(cm) { - cm.state.delayingBlurEvent = true - setTimeout(function () { if (cm.state.delayingBlurEvent) { - cm.state.delayingBlurEvent = false - onBlur(cm) - } }, 100) -} - -function onFocus(cm, e) { - if (cm.state.delayingBlurEvent) { cm.state.delayingBlurEvent = false } - - if (cm.options.readOnly == "nocursor") { return } - if (!cm.state.focused) { - signal(cm, "focus", cm, e) - cm.state.focused = true - addClass(cm.display.wrapper, "CodeMirror-focused") - // This test prevents this from firing when a context - // menu is closed (since the input reset would kill the - // select-all detection hack) - if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) { - cm.display.input.reset() - if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20) } // Issue #1730 + // Given a MIME type, a {name, ...options} config object, or a name + // string, return a mode config object. + function resolveMode(spec) { + if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { + spec = mimeModes[spec]; + } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { + var found = mimeModes[spec.name]; + if (typeof found == "string") { found = {name: found}; } + spec = createObj(found, spec); + spec.name = found.name; + } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { + return resolveMode("application/xml") + } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+json$/.test(spec)) { + return resolveMode("application/json") } - cm.display.input.receivedFocus() + if (typeof spec == "string") { return {name: spec} } + else { return spec || {name: "null"} } } - restartBlink(cm) -} -function onBlur(cm, e) { - if (cm.state.delayingBlurEvent) { return } - if (cm.state.focused) { - signal(cm, "blur", cm, e) - cm.state.focused = false - rmClass(cm.display.wrapper, "CodeMirror-focused") + // Given a mode spec (anything that resolveMode accepts), find and + // initialize an actual mode object. + function getMode(options, spec) { + spec = resolveMode(spec); + var mfactory = modes[spec.name]; + if (!mfactory) { return getMode(options, "text/plain") } + var modeObj = mfactory(options, spec); + if (modeExtensions.hasOwnProperty(spec.name)) { + var exts = modeExtensions[spec.name]; + for (var prop in exts) { + if (!exts.hasOwnProperty(prop)) { continue } + if (modeObj.hasOwnProperty(prop)) { modeObj["_" + prop] = modeObj[prop]; } + modeObj[prop] = exts[prop]; + } + } + modeObj.name = spec.name; + if (spec.helperType) { modeObj.helperType = spec.helperType; } + if (spec.modeProps) { for (var prop$1 in spec.modeProps) + { modeObj[prop$1] = spec.modeProps[prop$1]; } } + + return modeObj } - clearInterval(cm.display.blinker) - setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false } }, 150) -} -// Read the actual heights of the rendered lines, and update their -// stored heights to match. -function updateHeightsInViewport(cm) { - var display = cm.display - var prevBottom = display.lineDiv.offsetTop - for (var i = 0; i < display.view.length; i++) { - var cur = display.view[i], height = (void 0) - if (cur.hidden) { continue } - if (ie && ie_version < 8) { - var bot = cur.node.offsetTop + cur.node.offsetHeight - height = bot - prevBottom - prevBottom = bot + // This can be used to attach properties to mode objects from + // outside the actual mode definition. + var modeExtensions = {}; + function extendMode(mode, properties) { + var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); + copyObj(properties, exts); + } + + function copyState(mode, state) { + if (state === true) { return state } + if (mode.copyState) { return mode.copyState(state) } + var nstate = {}; + for (var n in state) { + var val = state[n]; + if (val instanceof Array) { val = val.concat([]); } + nstate[n] = val; + } + return nstate + } + + // Given a mode and a state (for that mode), find the inner mode and + // state at the position that the state refers to. + function innerMode(mode, state) { + var info; + while (mode.innerMode) { + info = mode.innerMode(state); + if (!info || info.mode == mode) { break } + state = info.state; + mode = info.mode; + } + return info || {mode: mode, state: state} + } + + function startState(mode, a1, a2) { + return mode.startState ? mode.startState(a1, a2) : true + } + + // STRING STREAM + + // Fed to the mode parsers, provides helper functions to make + // parsers more succinct. + + var StringStream = function(string, tabSize, lineOracle) { + this.pos = this.start = 0; + this.string = string; + this.tabSize = tabSize || 8; + this.lastColumnPos = this.lastColumnValue = 0; + this.lineStart = 0; + this.lineOracle = lineOracle; + }; + + StringStream.prototype.eol = function () {return this.pos >= this.string.length}; + StringStream.prototype.sol = function () {return this.pos == this.lineStart}; + StringStream.prototype.peek = function () {return this.string.charAt(this.pos) || undefined}; + StringStream.prototype.next = function () { + if (this.pos < this.string.length) + { return this.string.charAt(this.pos++) } + }; + StringStream.prototype.eat = function (match) { + var ch = this.string.charAt(this.pos); + var ok; + if (typeof match == "string") { ok = ch == match; } + else { ok = ch && (match.test ? match.test(ch) : match(ch)); } + if (ok) {++this.pos; return ch} + }; + StringStream.prototype.eatWhile = function (match) { + var start = this.pos; + while (this.eat(match)){} + return this.pos > start + }; + StringStream.prototype.eatSpace = function () { + var this$1 = this; + + var start = this.pos; + while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) { ++this$1.pos; } + return this.pos > start + }; + StringStream.prototype.skipToEnd = function () {this.pos = this.string.length;}; + StringStream.prototype.skipTo = function (ch) { + var found = this.string.indexOf(ch, this.pos); + if (found > -1) {this.pos = found; return true} + }; + StringStream.prototype.backUp = function (n) {this.pos -= n;}; + StringStream.prototype.column = function () { + if (this.lastColumnPos < this.start) { + this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue); + this.lastColumnPos = this.start; + } + return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0) + }; + StringStream.prototype.indentation = function () { + return countColumn(this.string, null, this.tabSize) - + (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0) + }; + StringStream.prototype.match = function (pattern, consume, caseInsensitive) { + if (typeof pattern == "string") { + var cased = function (str) { return caseInsensitive ? str.toLowerCase() : str; }; + var substr = this.string.substr(this.pos, pattern.length); + if (cased(substr) == cased(pattern)) { + if (consume !== false) { this.pos += pattern.length; } + return true + } } else { - var box = cur.node.getBoundingClientRect() - height = box.bottom - box.top + var match = this.string.slice(this.pos).match(pattern); + if (match && match.index > 0) { return null } + if (match && consume !== false) { this.pos += match[0].length; } + return match } - var diff = cur.line.height - height - if (height < 2) { height = textHeight(display) } - if (diff > .005 || diff < -.005) { - updateLineHeight(cur.line, height) - updateWidgetHeight(cur.line) - if (cur.rest) { for (var j = 0; j < cur.rest.length; j++) - { updateWidgetHeight(cur.rest[j]) } } - } - } -} - -// Read and store the height of line widgets associated with the -// given line. -function updateWidgetHeight(line) { - if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i) { - var w = line.widgets[i], parent = w.node.parentNode - if (parent) { w.height = parent.offsetHeight } - } } -} - -// Compute the lines that are visible in a given viewport (defaults -// the the current scroll position). viewport may contain top, -// height, and ensure (see op.scrollToPos) properties. -function visibleLines(display, doc, viewport) { - var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop - top = Math.floor(top - paddingTop(display)) - var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight - - var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom) - // Ensure is a {from: {line, ch}, to: {line, ch}} object, and - // forces those lines into the viewport (if possible). - if (viewport && viewport.ensure) { - var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line - if (ensureFrom < from) { - from = ensureFrom - to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight) - } else if (Math.min(ensureTo, doc.lastLine()) >= to) { - from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight) - to = ensureTo - } - } - return {from: from, to: Math.max(to, from + 1)} -} - -// Re-align line numbers and gutter marks to compensate for -// horizontal scrolling. -function alignHorizontally(cm) { - var display = cm.display, view = display.view - if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) { return } - var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft - var gutterW = display.gutters.offsetWidth, left = comp + "px" - for (var i = 0; i < view.length; i++) { if (!view[i].hidden) { - if (cm.options.fixedGutter) { - if (view[i].gutter) - { view[i].gutter.style.left = left } - if (view[i].gutterBackground) - { view[i].gutterBackground.style.left = left } - } - var align = view[i].alignable - if (align) { for (var j = 0; j < align.length; j++) - { align[j].style.left = left } } - } } - if (cm.options.fixedGutter) - { display.gutters.style.left = (comp + gutterW) + "px" } -} - -// Used to ensure that the line number gutter is still the right -// size for the current document size. Returns true when an update -// is needed. -function maybeUpdateLineNumberWidth(cm) { - if (!cm.options.lineNumbers) { return false } - var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display - if (last.length != display.lineNumChars) { - var test = display.measure.appendChild(elt("div", [elt("div", last)], - "CodeMirror-linenumber CodeMirror-gutter-elt")) - var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW - display.lineGutter.style.width = "" - display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1 - display.lineNumWidth = display.lineNumInnerWidth + padding - display.lineNumChars = display.lineNumInnerWidth ? last.length : -1 - display.lineGutter.style.width = display.lineNumWidth + "px" - updateGutterSpace(cm) - return true - } - return false -} - -// SCROLLING THINGS INTO VIEW - -// If an editor sits on the top or bottom of the window, partially -// scrolled out of view, this ensures that the cursor is visible. -function maybeScrollWindow(cm, rect) { - if (signalDOMEvent(cm, "scrollCursorIntoView")) { return } - - var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null - if (rect.top + box.top < 0) { doScroll = true } - else if (rect.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) { doScroll = false } - if (doScroll != null && !phantom) { - var scrollNode = elt("div", "\u200b", null, ("position: absolute;\n top: " + (rect.top - display.viewOffset - paddingTop(cm.display)) + "px;\n height: " + (rect.bottom - rect.top + scrollGap(cm) + display.barHeight) + "px;\n left: " + (rect.left) + "px; width: " + (Math.max(2, rect.right - rect.left)) + "px;")) - cm.display.lineSpace.appendChild(scrollNode) - scrollNode.scrollIntoView(doScroll) - cm.display.lineSpace.removeChild(scrollNode) - } -} - -// Scroll a given position into view (immediately), verifying that -// it actually became visible (as line heights are accurately -// measured, the position of something may 'drift' during drawing). -function scrollPosIntoView(cm, pos, end, margin) { - if (margin == null) { margin = 0 } - var rect - if (!cm.options.lineWrapping && pos == end) { - // Set pos and end to the cursor positions around the character pos sticks to - // If pos.sticky == "before", that is around pos.ch - 1, otherwise around pos.ch - // If pos == Pos(_, 0, "before"), pos and end are unchanged - pos = pos.ch ? Pos(pos.line, pos.sticky == "before" ? pos.ch - 1 : pos.ch, "after") : pos - end = pos.sticky == "before" ? Pos(pos.line, pos.ch + 1, "before") : pos - } - for (var limit = 0; limit < 5; limit++) { - var changed = false - var coords = cursorCoords(cm, pos) - var endCoords = !end || end == pos ? coords : cursorCoords(cm, end) - rect = {left: Math.min(coords.left, endCoords.left), - top: Math.min(coords.top, endCoords.top) - margin, - right: Math.max(coords.left, endCoords.left), - bottom: Math.max(coords.bottom, endCoords.bottom) + margin} - var scrollPos = calculateScrollPos(cm, rect) - var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft - if (scrollPos.scrollTop != null) { - updateScrollTop(cm, scrollPos.scrollTop) - if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true } - } - if (scrollPos.scrollLeft != null) { - setScrollLeft(cm, scrollPos.scrollLeft) - if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true } - } - if (!changed) { break } - } - return rect -} - -// Scroll a given set of coordinates into view (immediately). -function scrollIntoView(cm, rect) { - var scrollPos = calculateScrollPos(cm, rect) - if (scrollPos.scrollTop != null) { updateScrollTop(cm, scrollPos.scrollTop) } - if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft) } -} - -// Calculate a new scroll position needed to scroll the given -// rectangle into view. Returns an object with scrollTop and -// scrollLeft properties. When these are undefined, the -// vertical/horizontal position does not need to be adjusted. -function calculateScrollPos(cm, rect) { - var display = cm.display, snapMargin = textHeight(cm.display) - if (rect.top < 0) { rect.top = 0 } - var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop - var screen = displayHeight(cm), result = {} - if (rect.bottom - rect.top > screen) { rect.bottom = rect.top + screen } - var docBottom = cm.doc.height + paddingVert(display) - var atTop = rect.top < snapMargin, atBottom = rect.bottom > docBottom - snapMargin - if (rect.top < screentop) { - result.scrollTop = atTop ? 0 : rect.top - } else if (rect.bottom > screentop + screen) { - var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen) - if (newTop != screentop) { result.scrollTop = newTop } - } - - var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft - var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0) - var tooWide = rect.right - rect.left > screenw - if (tooWide) { rect.right = rect.left + screenw } - if (rect.left < 10) - { result.scrollLeft = 0 } - else if (rect.left < screenleft) - { result.scrollLeft = Math.max(0, rect.left - (tooWide ? 0 : 10)) } - else if (rect.right > screenw + screenleft - 3) - { result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw } - return result -} - -// Store a relative adjustment to the scroll position in the current -// operation (to be applied when the operation finishes). -function addToScrollTop(cm, top) { - if (top == null) { return } - resolveScrollToPos(cm) - cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top -} - -// Make sure that at the end of the operation the current cursor is -// shown. -function ensureCursorVisible(cm) { - resolveScrollToPos(cm) - var cur = cm.getCursor() - cm.curOp.scrollToPos = {from: cur, to: cur, margin: cm.options.cursorScrollMargin} -} - -function scrollToCoords(cm, x, y) { - if (x != null || y != null) { resolveScrollToPos(cm) } - if (x != null) { cm.curOp.scrollLeft = x } - if (y != null) { cm.curOp.scrollTop = y } -} - -function scrollToRange(cm, range) { - resolveScrollToPos(cm) - cm.curOp.scrollToPos = range -} - -// When an operation has its scrollToPos property set, and another -// scroll action is applied before the end of the operation, this -// 'simulates' scrolling that position into view in a cheap way, so -// that the effect of intermediate scroll commands is not ignored. -function resolveScrollToPos(cm) { - var range = cm.curOp.scrollToPos - if (range) { - cm.curOp.scrollToPos = null - var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to) - scrollToCoordsRange(cm, from, to, range.margin) - } -} - -function scrollToCoordsRange(cm, from, to, margin) { - var sPos = calculateScrollPos(cm, { - left: Math.min(from.left, to.left), - top: Math.min(from.top, to.top) - margin, - right: Math.max(from.right, to.right), - bottom: Math.max(from.bottom, to.bottom) + margin - }) - scrollToCoords(cm, sPos.scrollLeft, sPos.scrollTop) -} - -// Sync the scrollable area and scrollbars, ensure the viewport -// covers the visible area. -function updateScrollTop(cm, val) { - if (Math.abs(cm.doc.scrollTop - val) < 2) { return } - if (!gecko) { updateDisplaySimple(cm, {top: val}) } - setScrollTop(cm, val, true) - if (gecko) { updateDisplaySimple(cm) } - startWorker(cm, 100) -} - -function setScrollTop(cm, val, forceScroll) { - val = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, val) - if (cm.display.scroller.scrollTop == val && !forceScroll) { return } - cm.doc.scrollTop = val - cm.display.scrollbars.setScrollTop(val) - if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val } -} - -// Sync scroller and scrollbar, ensure the gutter elements are -// aligned. -function setScrollLeft(cm, val, isScroller, forceScroll) { - val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth) - if ((isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) && !forceScroll) { return } - cm.doc.scrollLeft = val - alignHorizontally(cm) - if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val } - cm.display.scrollbars.setScrollLeft(val) -} - -// SCROLLBARS - -// Prepare DOM reads needed to update the scrollbars. Done in one -// shot to minimize update/measure roundtrips. -function measureForScrollbars(cm) { - var d = cm.display, gutterW = d.gutters.offsetWidth - var docH = Math.round(cm.doc.height + paddingVert(cm.display)) - return { - clientHeight: d.scroller.clientHeight, - viewHeight: d.wrapper.clientHeight, - scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth, - viewWidth: d.wrapper.clientWidth, - barLeft: cm.options.fixedGutter ? gutterW : 0, - docHeight: docH, - scrollHeight: docH + scrollGap(cm) + d.barHeight, - nativeBarWidth: d.nativeBarWidth, - gutterWidth: gutterW - } -} - -var NativeScrollbars = function(place, scroll, cm) { - this.cm = cm - var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar") - var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar") - vert.tabIndex = horiz.tabIndex = -1 - place(vert); place(horiz) - - on(vert, "scroll", function () { - if (vert.clientHeight) { scroll(vert.scrollTop, "vertical") } - }) - on(horiz, "scroll", function () { - if (horiz.clientWidth) { scroll(horiz.scrollLeft, "horizontal") } - }) - - this.checkedZeroWidth = false - // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). - if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = "18px" } -}; - -NativeScrollbars.prototype.update = function (measure) { - var needsH = measure.scrollWidth > measure.clientWidth + 1 - var needsV = measure.scrollHeight > measure.clientHeight + 1 - var sWidth = measure.nativeBarWidth - - if (needsV) { - this.vert.style.display = "block" - this.vert.style.bottom = needsH ? sWidth + "px" : "0" - var totalHeight = measure.viewHeight - (needsH ? sWidth : 0) - // A bug in IE8 can cause this value to be negative, so guard it. - this.vert.firstChild.style.height = - Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px" - } else { - this.vert.style.display = "" - this.vert.firstChild.style.height = "0" - } - - if (needsH) { - this.horiz.style.display = "block" - this.horiz.style.right = needsV ? sWidth + "px" : "0" - this.horiz.style.left = measure.barLeft + "px" - var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0) - this.horiz.firstChild.style.width = - Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + "px" - } else { - this.horiz.style.display = "" - this.horiz.firstChild.style.width = "0" - } - - if (!this.checkedZeroWidth && measure.clientHeight > 0) { - if (sWidth == 0) { this.zeroWidthHack() } - this.checkedZeroWidth = true - } - - return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0} -}; - -NativeScrollbars.prototype.setScrollLeft = function (pos) { - if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos } - if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz, "horiz") } -}; - -NativeScrollbars.prototype.setScrollTop = function (pos) { - if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos } - if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert, "vert") } -}; - -NativeScrollbars.prototype.zeroWidthHack = function () { - var w = mac && !mac_geMountainLion ? "12px" : "18px" - this.horiz.style.height = this.vert.style.width = w - this.horiz.style.pointerEvents = this.vert.style.pointerEvents = "none" - this.disableHoriz = new Delayed - this.disableVert = new Delayed -}; - -NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay, type) { - bar.style.pointerEvents = "auto" - function maybeDisable() { - // To find out whether the scrollbar is still visible, we - // check whether the element under the pixel in the bottom - // right corner of the scrollbar box is the scrollbar box - // itself (when the bar is still visible) or its filler child - // (when the bar is hidden). If it is still visible, we keep - // it enabled, if it's hidden, we disable pointer events. - var box = bar.getBoundingClientRect() - var elt = type == "vert" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2) - : document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1) - if (elt != bar) { bar.style.pointerEvents = "none" } - else { delay.set(1000, maybeDisable) } - } - delay.set(1000, maybeDisable) -}; - -NativeScrollbars.prototype.clear = function () { - var parent = this.horiz.parentNode - parent.removeChild(this.horiz) - parent.removeChild(this.vert) -}; - -var NullScrollbars = function () {}; - -NullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} }; -NullScrollbars.prototype.setScrollLeft = function () {}; -NullScrollbars.prototype.setScrollTop = function () {}; -NullScrollbars.prototype.clear = function () {}; - -function updateScrollbars(cm, measure) { - if (!measure) { measure = measureForScrollbars(cm) } - var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight - updateScrollbarsInner(cm, measure) - for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) { - if (startWidth != cm.display.barWidth && cm.options.lineWrapping) - { updateHeightsInViewport(cm) } - updateScrollbarsInner(cm, measureForScrollbars(cm)) - startWidth = cm.display.barWidth; startHeight = cm.display.barHeight - } -} - -// Re-synchronize the fake scrollbars with the actual size of the -// content. -function updateScrollbarsInner(cm, measure) { - var d = cm.display - var sizes = d.scrollbars.update(measure) - - d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px" - d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px" - d.heightForcer.style.borderBottom = sizes.bottom + "px solid transparent" - - if (sizes.right && sizes.bottom) { - d.scrollbarFiller.style.display = "block" - d.scrollbarFiller.style.height = sizes.bottom + "px" - d.scrollbarFiller.style.width = sizes.right + "px" - } else { d.scrollbarFiller.style.display = "" } - if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { - d.gutterFiller.style.display = "block" - d.gutterFiller.style.height = sizes.bottom + "px" - d.gutterFiller.style.width = measure.gutterWidth + "px" - } else { d.gutterFiller.style.display = "" } -} - -var scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars} - -function initScrollbars(cm) { - if (cm.display.scrollbars) { - cm.display.scrollbars.clear() - if (cm.display.scrollbars.addClass) - { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass) } - } - - cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) { - cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller) - // Prevent clicks in the scrollbars from killing focus - on(node, "mousedown", function () { - if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0) } - }) - node.setAttribute("cm-not-content", "true") - }, function (pos, axis) { - if (axis == "horizontal") { setScrollLeft(cm, pos) } - else { updateScrollTop(cm, pos) } - }, cm) - if (cm.display.scrollbars.addClass) - { addClass(cm.display.wrapper, cm.display.scrollbars.addClass) } -} - -// Operations are used to wrap a series of changes to the editor -// state in such a way that each change won't have to update the -// cursor and display (which would be awkward, slow, and -// error-prone). Instead, display updates are batched and then all -// combined and executed at once. - -var nextOpId = 0 -// Start a new operation. -function startOperation(cm) { - cm.curOp = { - cm: cm, - viewChanged: false, // Flag that indicates that lines might need to be redrawn - startHeight: cm.doc.height, // Used to detect need to update scrollbar - forceUpdate: false, // Used to force a redraw - updateInput: null, // Whether to reset the input textarea - typing: false, // Whether this reset should be careful to leave existing text (for compositing) - changeObjs: null, // Accumulated changes, for firing change events - cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on - cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already - selectionChanged: false, // Whether the selection needs to be redrawn - updateMaxLine: false, // Set when the widest line needs to be determined anew - scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet - scrollToPos: null, // Used to scroll to a specific position - focus: false, - id: ++nextOpId // Unique ID - } - pushOperation(cm.curOp) -} - -// Finish an operation, updating the display and signalling delayed events -function endOperation(cm) { - var op = cm.curOp - finishOperation(op, function (group) { - for (var i = 0; i < group.ops.length; i++) - { group.ops[i].cm.curOp = null } - endOperations(group) - }) -} - -// The DOM updates done when an operation finishes are batched so -// that the minimum number of relayouts are required. -function endOperations(group) { - var ops = group.ops - for (var i = 0; i < ops.length; i++) // Read DOM - { endOperation_R1(ops[i]) } - for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe) - { endOperation_W1(ops[i$1]) } - for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM - { endOperation_R2(ops[i$2]) } - for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe) - { endOperation_W2(ops[i$3]) } - for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM - { endOperation_finish(ops[i$4]) } -} - -function endOperation_R1(op) { - var cm = op.cm, display = cm.display - maybeClipScrollbars(cm) - if (op.updateMaxLine) { findMaxLine(cm) } - - op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null || - op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom || - op.scrollToPos.to.line >= display.viewTo) || - display.maxLineChanged && cm.options.lineWrapping - op.update = op.mustUpdate && - new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate) -} - -function endOperation_W1(op) { - op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update) -} - -function endOperation_R2(op) { - var cm = op.cm, display = cm.display - if (op.updatedDisplay) { updateHeightsInViewport(cm) } - - op.barMeasure = measureForScrollbars(cm) - - // If the max line changed since it was last measured, measure it, - // and ensure the document's width matches it. - // updateDisplay_W2 will use these properties to do the actual resizing - if (display.maxLineChanged && !cm.options.lineWrapping) { - op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3 - cm.display.sizerWidth = op.adjustWidthTo - op.barMeasure.scrollWidth = - Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth) - op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm)) - } - - if (op.updatedDisplay || op.selectionChanged) - { op.preparedSelection = display.input.prepareSelection() } -} - -function endOperation_W2(op) { - var cm = op.cm - - if (op.adjustWidthTo != null) { - cm.display.sizer.style.minWidth = op.adjustWidthTo + "px" - if (op.maxScrollLeft < cm.doc.scrollLeft) - { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true) } - cm.display.maxLineChanged = false - } - - var takeFocus = op.focus && op.focus == activeElt() - if (op.preparedSelection) - { cm.display.input.showSelection(op.preparedSelection, takeFocus) } - if (op.updatedDisplay || op.startHeight != cm.doc.height) - { updateScrollbars(cm, op.barMeasure) } - if (op.updatedDisplay) - { setDocumentHeight(cm, op.barMeasure) } - - if (op.selectionChanged) { restartBlink(cm) } - - if (cm.state.focused && op.updateInput) - { cm.display.input.reset(op.typing) } - if (takeFocus) { ensureFocus(op.cm) } -} - -function endOperation_finish(op) { - var cm = op.cm, display = cm.display, doc = cm.doc - - if (op.updatedDisplay) { postUpdateDisplay(cm, op.update) } - - // Abort mouse wheel delta measurement, when scrolling explicitly - if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos)) - { display.wheelStartX = display.wheelStartY = null } - - // Propagate the scroll position to the actual DOM scroller - if (op.scrollTop != null) { setScrollTop(cm, op.scrollTop, op.forceScroll) } - - if (op.scrollLeft != null) { setScrollLeft(cm, op.scrollLeft, true, true) } - // If we need to scroll a specific position into view, do so. - if (op.scrollToPos) { - var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from), - clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin) - maybeScrollWindow(cm, rect) - } - - // Fire events for markers that are hidden/unidden by editing or - // undoing - var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers - if (hidden) { for (var i = 0; i < hidden.length; ++i) - { if (!hidden[i].lines.length) { signal(hidden[i], "hide") } } } - if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1) - { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], "unhide") } } } - - if (display.wrapper.offsetHeight) - { doc.scrollTop = cm.display.scroller.scrollTop } - - // Fire change events, and delayed event handlers - if (op.changeObjs) - { signal(cm, "changes", cm, op.changeObjs) } - if (op.update) - { op.update.finish() } -} - -// Run the given function in an operation -function runInOp(cm, f) { - if (cm.curOp) { return f() } - startOperation(cm) - try { return f() } - finally { endOperation(cm) } -} -// Wraps a function in an operation. Returns the wrapped function. -function operation(cm, f) { - return function() { - if (cm.curOp) { return f.apply(cm, arguments) } - startOperation(cm) - try { return f.apply(cm, arguments) } - finally { endOperation(cm) } - } -} -// Used to add methods to editor and doc instances, wrapping them in -// operations. -function methodOp(f) { - return function() { - if (this.curOp) { return f.apply(this, arguments) } - startOperation(this) - try { return f.apply(this, arguments) } - finally { endOperation(this) } - } -} -function docMethodOp(f) { - return function() { - var cm = this.cm - if (!cm || cm.curOp) { return f.apply(this, arguments) } - startOperation(cm) - try { return f.apply(this, arguments) } - finally { endOperation(cm) } - } -} - -// Updates the display.view data structure for a given change to the -// document. From and to are in pre-change coordinates. Lendiff is -// the amount of lines added or subtracted by the change. This is -// used for changes that span multiple lines, or change the way -// lines are divided into visual lines. regLineChange (below) -// registers single-line changes. -function regChange(cm, from, to, lendiff) { - if (from == null) { from = cm.doc.first } - if (to == null) { to = cm.doc.first + cm.doc.size } - if (!lendiff) { lendiff = 0 } - - var display = cm.display - if (lendiff && to < display.viewTo && - (display.updateLineNumbers == null || display.updateLineNumbers > from)) - { display.updateLineNumbers = from } - - cm.curOp.viewChanged = true - - if (from >= display.viewTo) { // Change after - if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo) - { resetView(cm) } - } else if (to <= display.viewFrom) { // Change before - if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) { - resetView(cm) - } else { - display.viewFrom += lendiff - display.viewTo += lendiff - } - } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap - resetView(cm) - } else if (from <= display.viewFrom) { // Top overlap - var cut = viewCuttingPoint(cm, to, to + lendiff, 1) - if (cut) { - display.view = display.view.slice(cut.index) - display.viewFrom = cut.lineN - display.viewTo += lendiff - } else { - resetView(cm) - } - } else if (to >= display.viewTo) { // Bottom overlap - var cut$1 = viewCuttingPoint(cm, from, from, -1) - if (cut$1) { - display.view = display.view.slice(0, cut$1.index) - display.viewTo = cut$1.lineN - } else { - resetView(cm) - } - } else { // Gap in the middle - var cutTop = viewCuttingPoint(cm, from, from, -1) - var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1) - if (cutTop && cutBot) { - display.view = display.view.slice(0, cutTop.index) - .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN)) - .concat(display.view.slice(cutBot.index)) - display.viewTo += lendiff - } else { - resetView(cm) - } - } - - var ext = display.externalMeasured - if (ext) { - if (to < ext.lineN) - { ext.lineN += lendiff } - else if (from < ext.lineN + ext.size) - { display.externalMeasured = null } - } -} - -// Register a change to a single line. Type must be one of "text", -// "gutter", "class", "widget" -function regLineChange(cm, line, type) { - cm.curOp.viewChanged = true - var display = cm.display, ext = cm.display.externalMeasured - if (ext && line >= ext.lineN && line < ext.lineN + ext.size) - { display.externalMeasured = null } - - if (line < display.viewFrom || line >= display.viewTo) { return } - var lineView = display.view[findViewIndex(cm, line)] - if (lineView.node == null) { return } - var arr = lineView.changes || (lineView.changes = []) - if (indexOf(arr, type) == -1) { arr.push(type) } -} - -// Clear the view. -function resetView(cm) { - cm.display.viewFrom = cm.display.viewTo = cm.doc.first - cm.display.view = [] - cm.display.viewOffset = 0 -} - -function viewCuttingPoint(cm, oldN, newN, dir) { - var index = findViewIndex(cm, oldN), diff, view = cm.display.view - if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size) - { return {index: index, lineN: newN} } - var n = cm.display.viewFrom - for (var i = 0; i < index; i++) - { n += view[i].size } - if (n != oldN) { - if (dir > 0) { - if (index == view.length - 1) { return null } - diff = (n + view[index].size) - oldN - index++ - } else { - diff = n - oldN - } - oldN += diff; newN += diff - } - while (visualLineNo(cm.doc, newN) != newN) { - if (index == (dir < 0 ? 0 : view.length - 1)) { return null } - newN += dir * view[index - (dir < 0 ? 1 : 0)].size - index += dir - } - return {index: index, lineN: newN} -} - -// Force the view to cover a given range, adding empty view element -// or clipping off existing ones as needed. -function adjustView(cm, from, to) { - var display = cm.display, view = display.view - if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) { - display.view = buildViewArray(cm, from, to) - display.viewFrom = from - } else { - if (display.viewFrom > from) - { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view) } - else if (display.viewFrom < from) - { display.view = display.view.slice(findViewIndex(cm, from)) } - display.viewFrom = from - if (display.viewTo < to) - { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)) } - else if (display.viewTo > to) - { display.view = display.view.slice(0, findViewIndex(cm, to)) } - } - display.viewTo = to -} - -// Count the number of lines in the view whose DOM representation is -// out of date (or nonexistent). -function countDirtyView(cm) { - var view = cm.display.view, dirty = 0 - for (var i = 0; i < view.length; i++) { - var lineView = view[i] - if (!lineView.hidden && (!lineView.node || lineView.changes)) { ++dirty } - } - return dirty -} - -// HIGHLIGHT WORKER - -function startWorker(cm, time) { - if (cm.doc.highlightFrontier < cm.display.viewTo) - { cm.state.highlight.set(time, bind(highlightWorker, cm)) } -} - -function highlightWorker(cm) { - var doc = cm.doc - if (doc.highlightFrontier >= cm.display.viewTo) { return } - var end = +new Date + cm.options.workTime - var context = getContextBefore(cm, doc.highlightFrontier) - var changedLines = [] - - doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) { - if (context.line >= cm.display.viewFrom) { // Visible - var oldStyles = line.styles - var resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null - var highlighted = highlightLine(cm, line, context, true) - if (resetState) { context.state = resetState } - line.styles = highlighted.styles - var oldCls = line.styleClasses, newCls = highlighted.classes - if (newCls) { line.styleClasses = newCls } - else if (oldCls) { line.styleClasses = null } - var ischange = !oldStyles || oldStyles.length != line.styles.length || - oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass) - for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i] } - if (ischange) { changedLines.push(context.line) } - line.stateAfter = context.save() - context.nextLine() - } else { - if (line.text.length <= cm.options.maxHighlightLength) - { processLine(cm, line.text, context) } - line.stateAfter = context.line % 5 == 0 ? context.save() : null - context.nextLine() - } - if (+new Date > end) { - startWorker(cm, cm.options.workDelay) - return true - } - }) - doc.highlightFrontier = context.line - doc.modeFrontier = Math.max(doc.modeFrontier, context.line) - if (changedLines.length) { runInOp(cm, function () { - for (var i = 0; i < changedLines.length; i++) - { regLineChange(cm, changedLines[i], "text") } - }) } -} - -// DISPLAY DRAWING - -var DisplayUpdate = function(cm, viewport, force) { - var display = cm.display - - this.viewport = viewport - // Store some values that we'll need later (but don't want to force a relayout for) - this.visible = visibleLines(display, cm.doc, viewport) - this.editorIsHidden = !display.wrapper.offsetWidth - this.wrapperHeight = display.wrapper.clientHeight - this.wrapperWidth = display.wrapper.clientWidth - this.oldDisplayWidth = displayWidth(cm) - this.force = force - this.dims = getDimensions(cm) - this.events = [] -}; - -DisplayUpdate.prototype.signal = function (emitter, type) { - if (hasHandler(emitter, type)) - { this.events.push(arguments) } -}; -DisplayUpdate.prototype.finish = function () { - var this$1 = this; - - for (var i = 0; i < this.events.length; i++) - { signal.apply(null, this$1.events[i]) } -}; - -function maybeClipScrollbars(cm) { - var display = cm.display - if (!display.scrollbarsClipped && display.scroller.offsetWidth) { - display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth - display.heightForcer.style.height = scrollGap(cm) + "px" - display.sizer.style.marginBottom = -display.nativeBarWidth + "px" - display.sizer.style.borderRightWidth = scrollGap(cm) + "px" - display.scrollbarsClipped = true - } -} - -function selectionSnapshot(cm) { - if (cm.hasFocus()) { return null } - var active = activeElt() - if (!active || !contains(cm.display.lineDiv, active)) { return null } - var result = {activeElt: active} - if (window.getSelection) { - var sel = window.getSelection() - if (sel.anchorNode && sel.extend && contains(cm.display.lineDiv, sel.anchorNode)) { - result.anchorNode = sel.anchorNode - result.anchorOffset = sel.anchorOffset - result.focusNode = sel.focusNode - result.focusOffset = sel.focusOffset - } - } - return result -} - -function restoreSelection(snapshot) { - if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt()) { return } - snapshot.activeElt.focus() - if (snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) { - var sel = window.getSelection(), range = document.createRange() - range.setEnd(snapshot.anchorNode, snapshot.anchorOffset) - range.collapse(false) - sel.removeAllRanges() - sel.addRange(range) - sel.extend(snapshot.focusNode, snapshot.focusOffset) - } -} - -// Does the actual updating of the line display. Bails out -// (returning false) when there is nothing to be done and forced is -// false. -function updateDisplayIfNeeded(cm, update) { - var display = cm.display, doc = cm.doc - - if (update.editorIsHidden) { - resetView(cm) - return false - } - - // Bail out if the visible area is already rendered and nothing changed. - if (!update.force && - update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo && - (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) && - display.renderedView == display.view && countDirtyView(cm) == 0) - { return false } - - if (maybeUpdateLineNumberWidth(cm)) { - resetView(cm) - update.dims = getDimensions(cm) - } - - // Compute a suitable new viewport (from & to) - var end = doc.first + doc.size - var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first) - var to = Math.min(end, update.visible.to + cm.options.viewportMargin) - if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom) } - if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo) } - if (sawCollapsedSpans) { - from = visualLineNo(cm.doc, from) - to = visualLineEndNo(cm.doc, to) - } - - var different = from != display.viewFrom || to != display.viewTo || - display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth - adjustView(cm, from, to) - - display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom)) - // Position the mover div to align with the current scroll position - cm.display.mover.style.top = display.viewOffset + "px" - - var toUpdate = countDirtyView(cm) - if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view && - (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo)) - { return false } - - // For big changes, we hide the enclosing element during the - // update, since that speeds up the operations on most browsers. - var selSnapshot = selectionSnapshot(cm) - if (toUpdate > 4) { display.lineDiv.style.display = "none" } - patchDisplay(cm, display.updateLineNumbers, update.dims) - if (toUpdate > 4) { display.lineDiv.style.display = "" } - display.renderedView = display.view - // There might have been a widget with a focused element that got - // hidden or updated, if so re-focus it. - restoreSelection(selSnapshot) - - // Prevent selection and cursors from interfering with the scroll - // width and height. - removeChildren(display.cursorDiv) - removeChildren(display.selectionDiv) - display.gutters.style.height = display.sizer.style.minHeight = 0 - - if (different) { - display.lastWrapHeight = update.wrapperHeight - display.lastWrapWidth = update.wrapperWidth - startWorker(cm, 400) - } - - display.updateLineNumbers = null - - return true -} - -function postUpdateDisplay(cm, update) { - var viewport = update.viewport - - for (var first = true;; first = false) { - if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) { - // Clip forced viewport to actual scrollable area. - if (viewport && viewport.top != null) - { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)} } - // Updated line heights might result in the drawn area not - // actually covering the viewport. Keep looping until it does. - update.visible = visibleLines(cm.display, cm.doc, viewport) - if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo) - { break } - } - if (!updateDisplayIfNeeded(cm, update)) { break } - updateHeightsInViewport(cm) - var barMeasure = measureForScrollbars(cm) - updateSelection(cm) - updateScrollbars(cm, barMeasure) - setDocumentHeight(cm, barMeasure) - update.force = false - } - - update.signal(cm, "update", cm) - if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) { - update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo) - cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo - } -} - -function updateDisplaySimple(cm, viewport) { - var update = new DisplayUpdate(cm, viewport) - if (updateDisplayIfNeeded(cm, update)) { - updateHeightsInViewport(cm) - postUpdateDisplay(cm, update) - var barMeasure = measureForScrollbars(cm) - updateSelection(cm) - updateScrollbars(cm, barMeasure) - setDocumentHeight(cm, barMeasure) - update.finish() - } -} - -// Sync the actual display DOM structure with display.view, removing -// nodes for lines that are no longer in view, and creating the ones -// that are not there yet, and updating the ones that are out of -// date. -function patchDisplay(cm, updateNumbersFrom, dims) { - var display = cm.display, lineNumbers = cm.options.lineNumbers - var container = display.lineDiv, cur = container.firstChild - - function rm(node) { - var next = node.nextSibling - // Works around a throw-scroll bug in OS X Webkit - if (webkit && mac && cm.display.currentWheelTarget == node) - { node.style.display = "none" } + }; + StringStream.prototype.current = function (){return this.string.slice(this.start, this.pos)}; + StringStream.prototype.hideFirstChars = function (n, inner) { + this.lineStart += n; + try { return inner() } + finally { this.lineStart -= n; } + }; + StringStream.prototype.lookAhead = function (n) { + var oracle = this.lineOracle; + return oracle && oracle.lookAhead(n) + }; + StringStream.prototype.baseToken = function () { + var oracle = this.lineOracle; + return oracle && oracle.baseToken(this.pos) + }; + + var SavedContext = function(state, lookAhead) { + this.state = state; + this.lookAhead = lookAhead; + }; + + var Context = function(doc, state, line, lookAhead) { + this.state = state; + this.doc = doc; + this.line = line; + this.maxLookAhead = lookAhead || 0; + this.baseTokens = null; + this.baseTokenPos = 1; + }; + + Context.prototype.lookAhead = function (n) { + var line = this.doc.getLine(this.line + n); + if (line != null && n > this.maxLookAhead) { this.maxLookAhead = n; } + return line + }; + + Context.prototype.baseToken = function (n) { + var this$1 = this; + + if (!this.baseTokens) { return null } + while (this.baseTokens[this.baseTokenPos] <= n) + { this$1.baseTokenPos += 2; } + var type = this.baseTokens[this.baseTokenPos + 1]; + return {type: type && type.replace(/( |^)overlay .*/, ""), + size: this.baseTokens[this.baseTokenPos] - n} + }; + + Context.prototype.nextLine = function () { + this.line++; + if (this.maxLookAhead > 0) { this.maxLookAhead--; } + }; + + Context.fromSaved = function (doc, saved, line) { + if (saved instanceof SavedContext) + { return new Context(doc, copyState(doc.mode, saved.state), line, saved.lookAhead) } else - { node.parentNode.removeChild(node) } - return next - } + { return new Context(doc, copyState(doc.mode, saved), line) } + }; - var view = display.view, lineN = display.viewFrom - // Loop over the elements in the view, syncing cur (the DOM nodes - // in display.lineDiv) with the view as we go. - for (var i = 0; i < view.length; i++) { - var lineView = view[i] - if (lineView.hidden) { - } else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet - var node = buildLineElement(cm, lineView, lineN, dims) - container.insertBefore(node, cur) - } else { // Already drawn - while (cur != lineView.node) { cur = rm(cur) } - var updateNumber = lineNumbers && updateNumbersFrom != null && - updateNumbersFrom <= lineN && lineView.lineNumber - if (lineView.changes) { - if (indexOf(lineView.changes, "gutter") > -1) { updateNumber = false } - updateLineForChanges(cm, lineView, lineN, dims) - } - if (updateNumber) { - removeChildren(lineView.lineNumber) - lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN))) - } - cur = lineView.node.nextSibling - } - lineN += lineView.size - } - while (cur) { cur = rm(cur) } -} + Context.prototype.save = function (copy) { + var state = copy !== false ? copyState(this.doc.mode, this.state) : this.state; + return this.maxLookAhead > 0 ? new SavedContext(state, this.maxLookAhead) : state + }; -function updateGutterSpace(cm) { - var width = cm.display.gutters.offsetWidth - cm.display.sizer.style.marginLeft = width + "px" -} -function setDocumentHeight(cm, measure) { - cm.display.sizer.style.minHeight = measure.docHeight + "px" - cm.display.heightForcer.style.top = measure.docHeight + "px" - cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + "px" -} + // Compute a style array (an array starting with a mode generation + // -- for invalidation -- followed by pairs of end positions and + // style strings), which is used to highlight the tokens on the + // line. + function highlightLine(cm, line, context, forceToEnd) { + // A styles array always starts with a number identifying the + // mode/overlays that it is based on (for easy invalidation). + var st = [cm.state.modeGen], lineClasses = {}; + // Compute the base array of styles + runMode(cm, line.text, cm.doc.mode, context, function (end, style) { return st.push(end, style); }, + lineClasses, forceToEnd); + var state = context.state; -// Rebuild the gutter elements, ensure the margin to the left of the -// code matches their width. -function updateGutters(cm) { - var gutters = cm.display.gutters, specs = cm.options.gutters - removeChildren(gutters) - var i = 0 - for (; i < specs.length; ++i) { - var gutterClass = specs[i] - var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass)) - if (gutterClass == "CodeMirror-linenumbers") { - cm.display.lineGutter = gElt - gElt.style.width = (cm.display.lineNumWidth || 1) + "px" - } - } - gutters.style.display = i ? "" : "none" - updateGutterSpace(cm) -} - -// Make sure the gutters options contains the element -// "CodeMirror-linenumbers" when the lineNumbers option is true. -function setGuttersForLineNumbers(options) { - var found = indexOf(options.gutters, "CodeMirror-linenumbers") - if (found == -1 && options.lineNumbers) { - options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]) - } else if (found > -1 && !options.lineNumbers) { - options.gutters = options.gutters.slice(0) - options.gutters.splice(found, 1) - } -} - -var wheelSamples = 0; -var wheelPixelsPerUnit = null; -// Fill in a browser-detected starting value on browsers where we -// know one. These don't have to be accurate -- the result of them -// being wrong would just be a slight flicker on the first wheel -// scroll (if it is large enough). -if (ie) { wheelPixelsPerUnit = -.53 } -else if (gecko) { wheelPixelsPerUnit = 15 } -else if (chrome) { wheelPixelsPerUnit = -.7 } -else if (safari) { wheelPixelsPerUnit = -1/3 } - -function wheelEventDelta(e) { - var dx = e.wheelDeltaX, dy = e.wheelDeltaY - if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail } - if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail } - else if (dy == null) { dy = e.wheelDelta } - return {x: dx, y: dy} -} -function wheelEventPixels(e) { - var delta = wheelEventDelta(e) - delta.x *= wheelPixelsPerUnit - delta.y *= wheelPixelsPerUnit - return delta -} - -function onScrollWheel(cm, e) { - var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y - - var display = cm.display, scroll = display.scroller - // Quit if there's nothing to scroll here - var canScrollX = scroll.scrollWidth > scroll.clientWidth - var canScrollY = scroll.scrollHeight > scroll.clientHeight - if (!(dx && canScrollX || dy && canScrollY)) { return } - - // Webkit browsers on OS X abort momentum scrolls when the target - // of the scroll event is removed from the scrollable element. - // This hack (see related code in patchDisplay) makes sure the - // element is kept around. - if (dy && mac && webkit) { - outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) { - for (var i = 0; i < view.length; i++) { - if (view[i].node == cur) { - cm.display.currentWheelTarget = cur - break outer + // Run overlays, adjust style array. + var loop = function ( o ) { + context.baseTokens = st; + var overlay = cm.state.overlays[o], i = 1, at = 0; + context.state = true; + runMode(cm, line.text, overlay.mode, context, function (end, style) { + var start = i; + // Ensure there's a token end at the current position, and that i points at it + while (at < end) { + var i_end = st[i]; + if (i_end > end) + { st.splice(i, 1, end, st[i+1], i_end); } + i += 2; + at = Math.min(end, i_end); } + if (!style) { return } + if (overlay.opaque) { + st.splice(start, i - start, end, "overlay " + style); + i = start + 2; + } else { + for (; start < i; start += 2) { + var cur = st[start+1]; + st[start+1] = (cur ? cur + " " : "") + "overlay " + style; + } + } + }, lineClasses); + context.state = state; + context.baseTokens = null; + context.baseTokenPos = 1; + }; + + for (var o = 0; o < cm.state.overlays.length; ++o) loop( o ); + + return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null} + } + + function getLineStyles(cm, line, updateFrontier) { + if (!line.styles || line.styles[0] != cm.state.modeGen) { + var context = getContextBefore(cm, lineNo(line)); + var resetState = line.text.length > cm.options.maxHighlightLength && copyState(cm.doc.mode, context.state); + var result = highlightLine(cm, line, context); + if (resetState) { context.state = resetState; } + line.stateAfter = context.save(!resetState); + line.styles = result.styles; + if (result.classes) { line.styleClasses = result.classes; } + else if (line.styleClasses) { line.styleClasses = null; } + if (updateFrontier === cm.doc.highlightFrontier) + { cm.doc.modeFrontier = Math.max(cm.doc.modeFrontier, ++cm.doc.highlightFrontier); } + } + return line.styles + } + + function getContextBefore(cm, n, precise) { + var doc = cm.doc, display = cm.display; + if (!doc.mode.startState) { return new Context(doc, true, n) } + var start = findStartLine(cm, n, precise); + var saved = start > doc.first && getLine(doc, start - 1).stateAfter; + var context = saved ? Context.fromSaved(doc, saved, start) : new Context(doc, startState(doc.mode), start); + + doc.iter(start, n, function (line) { + processLine(cm, line.text, context); + var pos = context.line; + line.stateAfter = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo ? context.save() : null; + context.nextLine(); + }); + if (precise) { doc.modeFrontier = context.line; } + return context + } + + // Lightweight form of highlight -- proceed over this line and + // update state, but don't save a style array. Used for lines that + // aren't currently visible. + function processLine(cm, text, context, startAt) { + var mode = cm.doc.mode; + var stream = new StringStream(text, cm.options.tabSize, context); + stream.start = stream.pos = startAt || 0; + if (text == "") { callBlankLine(mode, context.state); } + while (!stream.eol()) { + readToken(mode, stream, context.state); + stream.start = stream.pos; + } + } + + function callBlankLine(mode, state) { + if (mode.blankLine) { return mode.blankLine(state) } + if (!mode.innerMode) { return } + var inner = innerMode(mode, state); + if (inner.mode.blankLine) { return inner.mode.blankLine(inner.state) } + } + + function readToken(mode, stream, state, inner) { + for (var i = 0; i < 10; i++) { + if (inner) { inner[0] = innerMode(mode, state).mode; } + var style = mode.token(stream, state); + if (stream.pos > stream.start) { return style } + } + throw new Error("Mode " + mode.name + " failed to advance stream.") + } + + var Token = function(stream, type, state) { + this.start = stream.start; this.end = stream.pos; + this.string = stream.current(); + this.type = type || null; + this.state = state; + }; + + // Utility for getTokenAt and getLineTokens + function takeToken(cm, pos, precise, asArray) { + var doc = cm.doc, mode = doc.mode, style; + pos = clipPos(doc, pos); + var line = getLine(doc, pos.line), context = getContextBefore(cm, pos.line, precise); + var stream = new StringStream(line.text, cm.options.tabSize, context), tokens; + if (asArray) { tokens = []; } + while ((asArray || stream.pos < pos.ch) && !stream.eol()) { + stream.start = stream.pos; + style = readToken(mode, stream, context.state); + if (asArray) { tokens.push(new Token(stream, style, copyState(doc.mode, context.state))); } + } + return asArray ? tokens : new Token(stream, style, context.state) + } + + function extractLineClasses(type, output) { + if (type) { for (;;) { + var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/); + if (!lineClass) { break } + type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length); + var prop = lineClass[1] ? "bgClass" : "textClass"; + if (output[prop] == null) + { output[prop] = lineClass[2]; } + else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop])) + { output[prop] += " " + lineClass[2]; } + } } + return type + } + + // Run the given mode's parser over a line, calling f for each token. + function runMode(cm, text, mode, context, f, lineClasses, forceToEnd) { + var flattenSpans = mode.flattenSpans; + if (flattenSpans == null) { flattenSpans = cm.options.flattenSpans; } + var curStart = 0, curStyle = null; + var stream = new StringStream(text, cm.options.tabSize, context), style; + var inner = cm.options.addModeClass && [null]; + if (text == "") { extractLineClasses(callBlankLine(mode, context.state), lineClasses); } + while (!stream.eol()) { + if (stream.pos > cm.options.maxHighlightLength) { + flattenSpans = false; + if (forceToEnd) { processLine(cm, text, context, stream.pos); } + stream.pos = text.length; + style = null; + } else { + style = extractLineClasses(readToken(mode, stream, context.state, inner), lineClasses); + } + if (inner) { + var mName = inner[0].name; + if (mName) { style = "m-" + (style ? mName + " " + style : mName); } + } + if (!flattenSpans || curStyle != style) { + while (curStart < stream.start) { + curStart = Math.min(stream.start, curStart + 5000); + f(curStart, curStyle); + } + curStyle = style; + } + stream.start = stream.pos; + } + while (curStart < stream.pos) { + // Webkit seems to refuse to render text nodes longer than 57444 + // characters, and returns inaccurate measurements in nodes + // starting around 5000 chars. + var pos = Math.min(stream.pos, curStart + 5000); + f(pos, curStyle); + curStart = pos; + } + } + + // Finds the line to start with when starting a parse. Tries to + // find a line with a stateAfter, so that it can start with a + // valid state. If that fails, it returns the line with the + // smallest indentation, which tends to need the least context to + // parse correctly. + function findStartLine(cm, n, precise) { + var minindent, minline, doc = cm.doc; + var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100); + for (var search = n; search > lim; --search) { + if (search <= doc.first) { return doc.first } + var line = getLine(doc, search - 1), after = line.stateAfter; + if (after && (!precise || search + (after instanceof SavedContext ? after.lookAhead : 0) <= doc.modeFrontier)) + { return search } + var indented = countColumn(line.text, null, cm.options.tabSize); + if (minline == null || minindent > indented) { + minline = search - 1; + minindent = indented; } } + return minline } - // On some browsers, horizontal scrolling will cause redraws to - // happen before the gutter has been realigned, causing it to - // wriggle around in a most unseemly way. When we have an - // estimated pixels/delta value, we just handle horizontal - // scrolling entirely here. It'll be slightly off from native, but - // better than glitching out. - if (dx && !gecko && !presto && wheelPixelsPerUnit != null) { - if (dy && canScrollY) - { updateScrollTop(cm, Math.max(0, scroll.scrollTop + dy * wheelPixelsPerUnit)) } - setScrollLeft(cm, Math.max(0, scroll.scrollLeft + dx * wheelPixelsPerUnit)) - // Only prevent default scrolling if vertical scrolling is - // actually possible. Otherwise, it causes vertical scroll - // jitter on OSX trackpads when deltaX is small and deltaY - // is large (issue #3579) - if (!dy || (dy && canScrollY)) - { e_preventDefault(e) } - display.wheelStartX = null // Abort measurement, if in progress - return + function retreatFrontier(doc, n) { + doc.modeFrontier = Math.min(doc.modeFrontier, n); + if (doc.highlightFrontier < n - 10) { return } + var start = doc.first; + for (var line = n - 1; line > start; line--) { + var saved = getLine(doc, line).stateAfter; + // change is on 3 + // state on line 1 looked ahead 2 -- so saw 3 + // test 1 + 2 < 3 should cover this + if (saved && (!(saved instanceof SavedContext) || line + saved.lookAhead < n)) { + start = line + 1; + break + } + } + doc.highlightFrontier = Math.min(doc.highlightFrontier, start); } - // 'Project' the visible viewport to cover the area that is being - // scrolled into view (if we know enough to estimate it). - if (dy && wheelPixelsPerUnit != null) { - var pixels = dy * wheelPixelsPerUnit - var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight - if (pixels < 0) { top = Math.max(0, top + pixels - 50) } - else { bot = Math.min(cm.doc.height, bot + pixels + 50) } - updateDisplaySimple(cm, {top: top, bottom: bot}) + // LINE DATA STRUCTURE + + // Line objects. These hold state related to a line, including + // highlighting info (the styles array). + var Line = function(text, markedSpans, estimateHeight) { + this.text = text; + attachMarkedSpans(this, markedSpans); + this.height = estimateHeight ? estimateHeight(this) : 1; + }; + + Line.prototype.lineNo = function () { return lineNo(this) }; + eventMixin(Line); + + // Change the content (text, markers) of a line. Automatically + // invalidates cached information and tries to re-estimate the + // line's height. + function updateLine(line, text, markedSpans, estimateHeight) { + line.text = text; + if (line.stateAfter) { line.stateAfter = null; } + if (line.styles) { line.styles = null; } + if (line.order != null) { line.order = null; } + detachMarkedSpans(line); + attachMarkedSpans(line, markedSpans); + var estHeight = estimateHeight ? estimateHeight(line) : 1; + if (estHeight != line.height) { updateLineHeight(line, estHeight); } } - if (wheelSamples < 20) { - if (display.wheelStartX == null) { - display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop - display.wheelDX = dx; display.wheelDY = dy - setTimeout(function () { - if (display.wheelStartX == null) { return } - var movedX = scroll.scrollLeft - display.wheelStartX - var movedY = scroll.scrollTop - display.wheelStartY - var sample = (movedY && display.wheelDY && movedY / display.wheelDY) || - (movedX && display.wheelDX && movedX / display.wheelDX) - display.wheelStartX = display.wheelStartY = null - if (!sample) { return } - wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1) - ++wheelSamples - }, 200) + // Detach a line from the document tree and its markers. + function cleanUpLine(line) { + line.parent = null; + detachMarkedSpans(line); + } + + // Convert a style as returned by a mode (either null, or a string + // containing one or more styles) to a CSS style. This is cached, + // and also looks for line-wide styles. + var styleToClassCache = {}, styleToClassCacheWithMode = {}; + function interpretTokenStyle(style, options) { + if (!style || /^\s*$/.test(style)) { return null } + var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache; + return cache[style] || + (cache[style] = style.replace(/\S+/g, "cm-$&")) + } + + // Render the DOM representation of the text of a line. Also builds + // up a 'line map', which points at the DOM nodes that represent + // specific stretches of text, and is used by the measuring code. + // The returned object contains the DOM node, this map, and + // information about line-wide styles that were set by the mode. + function buildLineContent(cm, lineView) { + // The padding-right forces the element to have a 'border', which + // is needed on Webkit to be able to get line-level bounding + // rectangles for it (in measureChar). + var content = eltP("span", null, null, webkit ? "padding-right: .1px" : null); + var builder = {pre: eltP("pre", [content], "CodeMirror-line"), content: content, + col: 0, pos: 0, cm: cm, + trailingSpace: false, + splitSpaces: cm.getOption("lineWrapping")}; + lineView.measure = {}; + + // Iterate over the logical lines that make up this visual line. + for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) { + var line = i ? lineView.rest[i - 1] : lineView.line, order = (void 0); + builder.pos = 0; + builder.addToken = buildToken; + // Optionally wire in some hacks into the token-rendering + // algorithm, to deal with browser quirks. + if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line, cm.doc.direction))) + { builder.addToken = buildTokenBadBidi(builder.addToken, order); } + builder.map = []; + var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line); + insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate)); + if (line.styleClasses) { + if (line.styleClasses.bgClass) + { builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || ""); } + if (line.styleClasses.textClass) + { builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || ""); } + } + + // Ensure at least a single node is present, for measuring. + if (builder.map.length == 0) + { builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))); } + + // Store the map and a cache object for the current logical line + if (i == 0) { + lineView.measure.map = builder.map; + lineView.measure.cache = {}; + } else { + (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map) + ;(lineView.measure.caches || (lineView.measure.caches = [])).push({}); + } + } + + // See issue #2901 + if (webkit) { + var last = builder.content.lastChild; + if (/\bcm-tab\b/.test(last.className) || (last.querySelector && last.querySelector(".cm-tab"))) + { builder.content.className = "cm-tab-wrap-hack"; } + } + + signal(cm, "renderLine", cm, lineView.line, builder.pre); + if (builder.pre.className) + { builder.textClass = joinClasses(builder.pre.className, builder.textClass || ""); } + + return builder + } + + function defaultSpecialCharPlaceholder(ch) { + var token = elt("span", "\u2022", "cm-invalidchar"); + token.title = "\\u" + ch.charCodeAt(0).toString(16); + token.setAttribute("aria-label", token.title); + return token + } + + // Build up the DOM representation for a single token, and add it to + // the line map. Takes care to render special characters separately. + function buildToken(builder, text, style, startStyle, endStyle, css, attributes) { + if (!text) { return } + var displayText = builder.splitSpaces ? splitSpaces(text, builder.trailingSpace) : text; + var special = builder.cm.state.specialChars, mustWrap = false; + var content; + if (!special.test(text)) { + builder.col += text.length; + content = document.createTextNode(displayText); + builder.map.push(builder.pos, builder.pos + text.length, content); + if (ie && ie_version < 9) { mustWrap = true; } + builder.pos += text.length; } else { - display.wheelDX += dx; display.wheelDY += dy + content = document.createDocumentFragment(); + var pos = 0; + while (true) { + special.lastIndex = pos; + var m = special.exec(text); + var skipped = m ? m.index - pos : text.length - pos; + if (skipped) { + var txt = document.createTextNode(displayText.slice(pos, pos + skipped)); + if (ie && ie_version < 9) { content.appendChild(elt("span", [txt])); } + else { content.appendChild(txt); } + builder.map.push(builder.pos, builder.pos + skipped, txt); + builder.col += skipped; + builder.pos += skipped; + } + if (!m) { break } + pos += skipped + 1; + var txt$1 = (void 0); + if (m[0] == "\t") { + var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; + txt$1 = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); + txt$1.setAttribute("role", "presentation"); + txt$1.setAttribute("cm-text", "\t"); + builder.col += tabWidth; + } else if (m[0] == "\r" || m[0] == "\n") { + txt$1 = content.appendChild(elt("span", m[0] == "\r" ? "\u240d" : "\u2424", "cm-invalidchar")); + txt$1.setAttribute("cm-text", m[0]); + builder.col += 1; + } else { + txt$1 = builder.cm.options.specialCharPlaceholder(m[0]); + txt$1.setAttribute("cm-text", m[0]); + if (ie && ie_version < 9) { content.appendChild(elt("span", [txt$1])); } + else { content.appendChild(txt$1); } + builder.col += 1; + } + builder.map.push(builder.pos, builder.pos + 1, txt$1); + builder.pos++; + } } - } -} - -// Selection objects are immutable. A new one is created every time -// the selection changes. A selection is one or more non-overlapping -// (and non-touching) ranges, sorted, and an integer that indicates -// which one is the primary selection (the one that's scrolled into -// view, that getCursor returns, etc). -var Selection = function(ranges, primIndex) { - this.ranges = ranges - this.primIndex = primIndex -}; - -Selection.prototype.primary = function () { return this.ranges[this.primIndex] }; - -Selection.prototype.equals = function (other) { - var this$1 = this; - - if (other == this) { return true } - if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false } - for (var i = 0; i < this.ranges.length; i++) { - var here = this$1.ranges[i], there = other.ranges[i] - if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) { return false } - } - return true -}; - -Selection.prototype.deepCopy = function () { - var this$1 = this; - - var out = [] - for (var i = 0; i < this.ranges.length; i++) - { out[i] = new Range(copyPos(this$1.ranges[i].anchor), copyPos(this$1.ranges[i].head)) } - return new Selection(out, this.primIndex) -}; - -Selection.prototype.somethingSelected = function () { - var this$1 = this; - - for (var i = 0; i < this.ranges.length; i++) - { if (!this$1.ranges[i].empty()) { return true } } - return false -}; - -Selection.prototype.contains = function (pos, end) { - var this$1 = this; - - if (!end) { end = pos } - for (var i = 0; i < this.ranges.length; i++) { - var range = this$1.ranges[i] - if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0) - { return i } - } - return -1 -}; - -var Range = function(anchor, head) { - this.anchor = anchor; this.head = head -}; - -Range.prototype.from = function () { return minPos(this.anchor, this.head) }; -Range.prototype.to = function () { return maxPos(this.anchor, this.head) }; -Range.prototype.empty = function () { return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch }; - -// Take an unsorted, potentially overlapping set of ranges, and -// build a selection out of it. 'Consumes' ranges array (modifying -// it). -function normalizeSelection(ranges, primIndex) { - var prim = ranges[primIndex] - ranges.sort(function (a, b) { return cmp(a.from(), b.from()); }) - primIndex = indexOf(ranges, prim) - for (var i = 1; i < ranges.length; i++) { - var cur = ranges[i], prev = ranges[i - 1] - if (cmp(prev.to(), cur.from()) >= 0) { - var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to()) - var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head - if (i <= primIndex) { --primIndex } - ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to)) + builder.trailingSpace = displayText.charCodeAt(text.length - 1) == 32; + if (style || startStyle || endStyle || mustWrap || css) { + var fullStyle = style || ""; + if (startStyle) { fullStyle += startStyle; } + if (endStyle) { fullStyle += endStyle; } + var token = elt("span", [content], fullStyle, css); + if (attributes) { + for (var attr in attributes) { if (attributes.hasOwnProperty(attr) && attr != "style" && attr != "class") + { token.setAttribute(attr, attributes[attr]); } } + } + return builder.content.appendChild(token) } + builder.content.appendChild(content); } - return new Selection(ranges, primIndex) -} -function simpleSelection(anchor, head) { - return new Selection([new Range(anchor, head || anchor)], 0) -} - -// Compute the position of the end of a change (its 'to' property -// refers to the pre-change end). -function changeEnd(change) { - if (!change.text) { return change.to } - return Pos(change.from.line + change.text.length - 1, - lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0)) -} - -// Adjust a position to refer to the post-change position of the -// same text, or the end of the change if the change covers it. -function adjustForChange(pos, change) { - if (cmp(pos, change.from) < 0) { return pos } - if (cmp(pos, change.to) <= 0) { return changeEnd(change) } - - var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch - if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch } - return Pos(line, ch) -} - -function computeSelAfterChange(doc, change) { - var out = [] - for (var i = 0; i < doc.sel.ranges.length; i++) { - var range = doc.sel.ranges[i] - out.push(new Range(adjustForChange(range.anchor, change), - adjustForChange(range.head, change))) - } - return normalizeSelection(out, doc.sel.primIndex) -} - -function offsetPos(pos, old, nw) { - if (pos.line == old.line) - { return Pos(nw.line, pos.ch - old.ch + nw.ch) } - else - { return Pos(nw.line + (pos.line - old.line), pos.ch) } -} - -// Used by replaceSelections to allow moving the selection to the -// start or around the replaced test. Hint may be "start" or "around". -function computeReplacedSel(doc, changes, hint) { - var out = [] - var oldPrev = Pos(doc.first, 0), newPrev = oldPrev - for (var i = 0; i < changes.length; i++) { - var change = changes[i] - var from = offsetPos(change.from, oldPrev, newPrev) - var to = offsetPos(changeEnd(change), oldPrev, newPrev) - oldPrev = change.to - newPrev = to - if (hint == "around") { - var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0 - out[i] = new Range(inv ? to : from, inv ? from : to) - } else { - out[i] = new Range(from, from) + // Change some spaces to NBSP to prevent the browser from collapsing + // trailing spaces at the end of a line when rendering text (issue #1362). + function splitSpaces(text, trailingBefore) { + if (text.length > 1 && !/ /.test(text)) { return text } + var spaceBefore = trailingBefore, result = ""; + for (var i = 0; i < text.length; i++) { + var ch = text.charAt(i); + if (ch == " " && spaceBefore && (i == text.length - 1 || text.charCodeAt(i + 1) == 32)) + { ch = "\u00a0"; } + result += ch; + spaceBefore = ch == " "; } - } - return new Selection(out, doc.sel.primIndex) -} - -// Used to get the editor into a consistent state again when options change. - -function loadMode(cm) { - cm.doc.mode = getMode(cm.options, cm.doc.modeOption) - resetModeState(cm) -} - -function resetModeState(cm) { - cm.doc.iter(function (line) { - if (line.stateAfter) { line.stateAfter = null } - if (line.styles) { line.styles = null } - }) - cm.doc.modeFrontier = cm.doc.highlightFrontier = cm.doc.first - startWorker(cm, 100) - cm.state.modeGen++ - if (cm.curOp) { regChange(cm) } -} - -// DOCUMENT DATA STRUCTURE - -// By default, updates that start and end at the beginning of a line -// are treated specially, in order to make the association of line -// widgets and marker elements with the text behave more intuitive. -function isWholeLineUpdate(doc, change) { - return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" && - (!doc.cm || doc.cm.options.wholeLineUpdateBefore) -} - -// Perform a change on the document data structure. -function updateDoc(doc, change, markedSpans, estimateHeight) { - function spansFor(n) {return markedSpans ? markedSpans[n] : null} - function update(line, text, spans) { - updateLine(line, text, spans, estimateHeight) - signalLater(line, "change", line, change) - } - function linesFor(start, end) { - var result = [] - for (var i = start; i < end; ++i) - { result.push(new Line(text[i], spansFor(i), estimateHeight)) } return result } - var from = change.from, to = change.to, text = change.text - var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line) - var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line - - // Adjust the line structure - if (change.full) { - doc.insert(0, linesFor(0, text.length)) - doc.remove(text.length, doc.size - text.length) - } else if (isWholeLineUpdate(doc, change)) { - // This is a whole-line replace. Treated specially to make - // sure line objects move the way they are supposed to. - var added = linesFor(0, text.length - 1) - update(lastLine, lastLine.text, lastSpans) - if (nlines) { doc.remove(from.line, nlines) } - if (added.length) { doc.insert(from.line, added) } - } else if (firstLine == lastLine) { - if (text.length == 1) { - update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans) - } else { - var added$1 = linesFor(1, text.length - 1) - added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)) - update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)) - doc.insert(from.line + 1, added$1) - } - } else if (text.length == 1) { - update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)) - doc.remove(from.line + 1, nlines) - } else { - update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)) - update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans) - var added$2 = linesFor(1, text.length - 1) - if (nlines > 1) { doc.remove(from.line + 1, nlines - 1) } - doc.insert(from.line + 1, added$2) - } - - signalLater(doc, "change", doc, change) -} - -// Call f for all linked documents. -function linkedDocs(doc, f, sharedHistOnly) { - function propagate(doc, skip, sharedHist) { - if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) { - var rel = doc.linked[i] - if (rel.doc == skip) { continue } - var shared = sharedHist && rel.sharedHist - if (sharedHistOnly && !shared) { continue } - f(rel.doc, shared) - propagate(rel.doc, doc, shared) - } } - } - propagate(doc, null, true) -} - -// Attach a document to an editor. -function attachDoc(cm, doc) { - if (doc.cm) { throw new Error("This document is already in use.") } - cm.doc = doc - doc.cm = cm - estimateLineHeights(cm) - loadMode(cm) - setDirectionClass(cm) - if (!cm.options.lineWrapping) { findMaxLine(cm) } - cm.options.mode = doc.modeOption - regChange(cm) -} - -function setDirectionClass(cm) { - ;(cm.doc.direction == "rtl" ? addClass : rmClass)(cm.display.lineDiv, "CodeMirror-rtl") -} - -function directionChanged(cm) { - runInOp(cm, function () { - setDirectionClass(cm) - regChange(cm) - }) -} - -function History(startGen) { - // Arrays of change events and selections. Doing something adds an - // event to done and clears undo. Undoing moves events from done - // to undone, redoing moves them in the other direction. - this.done = []; this.undone = [] - this.undoDepth = Infinity - // Used to track when changes can be merged into a single undo - // event - this.lastModTime = this.lastSelTime = 0 - this.lastOp = this.lastSelOp = null - this.lastOrigin = this.lastSelOrigin = null - // Used by the isClean() method - this.generation = this.maxGeneration = startGen || 1 -} - -// Create a history change event from an updateDoc-style change -// object. -function historyChangeFromChange(doc, change) { - var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)} - attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1) - linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true) - return histChange -} - -// Pop all selection events off the end of a history array. Stop at -// a change event. -function clearSelectionEvents(array) { - while (array.length) { - var last = lst(array) - if (last.ranges) { array.pop() } - else { break } - } -} - -// Find the top change event in the history. Pop off selection -// events that are in the way. -function lastChangeEvent(hist, force) { - if (force) { - clearSelectionEvents(hist.done) - return lst(hist.done) - } else if (hist.done.length && !lst(hist.done).ranges) { - return lst(hist.done) - } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) { - hist.done.pop() - return lst(hist.done) - } -} - -// Register a change in the history. Merges changes that are within -// a single operation, or are close together with an origin that -// allows merging (starting with "+") into a single event. -function addChangeToHistory(doc, change, selAfter, opId) { - var hist = doc.history - hist.undone.length = 0 - var time = +new Date, cur - var last - - if ((hist.lastOp == opId || - hist.lastOrigin == change.origin && change.origin && - ((change.origin.charAt(0) == "+" && hist.lastModTime > time - (doc.cm ? doc.cm.options.historyEventDelay : 500)) || - change.origin.charAt(0) == "*")) && - (cur = lastChangeEvent(hist, hist.lastOp == opId))) { - // Merge this change into the last event - last = lst(cur.changes) - if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) { - // Optimized case for simple insertion -- don't want to add - // new changesets for every character typed - last.to = changeEnd(change) - } else { - // Add new sub-event - cur.changes.push(historyChangeFromChange(doc, change)) - } - } else { - // Can not be merged, start a new event. - var before = lst(hist.done) - if (!before || !before.ranges) - { pushSelectionToHistory(doc.sel, hist.done) } - cur = {changes: [historyChangeFromChange(doc, change)], - generation: hist.generation} - hist.done.push(cur) - while (hist.done.length > hist.undoDepth) { - hist.done.shift() - if (!hist.done[0].ranges) { hist.done.shift() } - } - } - hist.done.push(selAfter) - hist.generation = ++hist.maxGeneration - hist.lastModTime = hist.lastSelTime = time - hist.lastOp = hist.lastSelOp = opId - hist.lastOrigin = hist.lastSelOrigin = change.origin - - if (!last) { signal(doc, "historyAdded") } -} - -function selectionEventCanBeMerged(doc, origin, prev, sel) { - var ch = origin.charAt(0) - return ch == "*" || - ch == "+" && - prev.ranges.length == sel.ranges.length && - prev.somethingSelected() == sel.somethingSelected() && - new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500) -} - -// Called whenever the selection changes, sets the new selection as -// the pending selection in the history, and pushes the old pending -// selection into the 'done' array when it was significantly -// different (in number of selected ranges, emptiness, or time). -function addSelectionToHistory(doc, sel, opId, options) { - var hist = doc.history, origin = options && options.origin - - // A new event is started when the previous origin does not match - // the current, or the origins don't allow matching. Origins - // starting with * are always merged, those starting with + are - // merged when similar and close together in time. - if (opId == hist.lastSelOp || - (origin && hist.lastSelOrigin == origin && - (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin || - selectionEventCanBeMerged(doc, origin, lst(hist.done), sel)))) - { hist.done[hist.done.length - 1] = sel } - else - { pushSelectionToHistory(sel, hist.done) } - - hist.lastSelTime = +new Date - hist.lastSelOrigin = origin - hist.lastSelOp = opId - if (options && options.clearRedo !== false) - { clearSelectionEvents(hist.undone) } -} - -function pushSelectionToHistory(sel, dest) { - var top = lst(dest) - if (!(top && top.ranges && top.equals(sel))) - { dest.push(sel) } -} - -// Used to store marked span information in the history. -function attachLocalSpans(doc, change, from, to) { - var existing = change["spans_" + doc.id], n = 0 - doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) { - if (line.markedSpans) - { (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans } - ++n - }) -} - -// When un/re-doing restores text containing marked spans, those -// that have been explicitly cleared should not be restored. -function removeClearedSpans(spans) { - if (!spans) { return null } - var out - for (var i = 0; i < spans.length; ++i) { - if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i) } } - else if (out) { out.push(spans[i]) } - } - return !out ? spans : out.length ? out : null -} - -// Retrieve and filter the old marked spans stored in a change event. -function getOldSpans(doc, change) { - var found = change["spans_" + doc.id] - if (!found) { return null } - var nw = [] - for (var i = 0; i < change.text.length; ++i) - { nw.push(removeClearedSpans(found[i])) } - return nw -} - -// Used for un/re-doing changes from the history. Combines the -// result of computing the existing spans with the set of spans that -// existed in the history (so that deleting around a span and then -// undoing brings back the span). -function mergeOldSpans(doc, change) { - var old = getOldSpans(doc, change) - var stretched = stretchSpansOverChange(doc, change) - if (!old) { return stretched } - if (!stretched) { return old } - - for (var i = 0; i < old.length; ++i) { - var oldCur = old[i], stretchCur = stretched[i] - if (oldCur && stretchCur) { - spans: for (var j = 0; j < stretchCur.length; ++j) { - var span = stretchCur[j] - for (var k = 0; k < oldCur.length; ++k) - { if (oldCur[k].marker == span.marker) { continue spans } } - oldCur.push(span) - } - } else if (stretchCur) { - old[i] = stretchCur - } - } - return old -} - -// Used both to provide a JSON-safe object in .getHistory, and, when -// detaching a document, to split the history in two -function copyHistoryArray(events, newGroup, instantiateSel) { - var copy = [] - for (var i = 0; i < events.length; ++i) { - var event = events[i] - if (event.ranges) { - copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event) - continue - } - var changes = event.changes, newChanges = [] - copy.push({changes: newChanges}) - for (var j = 0; j < changes.length; ++j) { - var change = changes[j], m = (void 0) - newChanges.push({from: change.from, to: change.to, text: change.text}) - if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\d+)$/)) { - if (indexOf(newGroup, Number(m[1])) > -1) { - lst(newChanges)[prop] = change[prop] - delete change[prop] + // Work around nonsense dimensions being reported for stretches of + // right-to-left text. + function buildTokenBadBidi(inner, order) { + return function (builder, text, style, startStyle, endStyle, css, attributes) { + style = style ? style + " cm-force-border" : "cm-force-border"; + var start = builder.pos, end = start + text.length; + for (;;) { + // Find the part that overlaps with the start of this text + var part = (void 0); + for (var i = 0; i < order.length; i++) { + part = order[i]; + if (part.to > start && part.from <= start) { break } } - } } } - } - } - return copy -} - -// The 'scroll' parameter given to many of these indicated whether -// the new cursor position should be scrolled into view after -// modifying the selection. - -// If shift is held or the extend flag is set, extends a range to -// include a given position (and optionally a second position). -// Otherwise, simply returns the range between the given positions. -// Used for cursor motion and such. -function extendRange(range, head, other, extend) { - if (extend) { - var anchor = range.anchor - if (other) { - var posBefore = cmp(head, anchor) < 0 - if (posBefore != (cmp(other, anchor) < 0)) { - anchor = head - head = other - } else if (posBefore != (cmp(head, other) < 0)) { - head = other + if (part.to >= end) { return inner(builder, text, style, startStyle, endStyle, css, attributes) } + inner(builder, text.slice(0, part.to - start), style, startStyle, null, css, attributes); + startStyle = null; + text = text.slice(part.to - start); + start = part.to; } } - return new Range(anchor, head) - } else { - return new Range(other || head, head) } -} -// Extend the primary selection range, discard the rest. -function extendSelection(doc, head, other, options, extend) { - if (extend == null) { extend = doc.cm && (doc.cm.display.shift || doc.extend) } - setSelection(doc, new Selection([extendRange(doc.sel.primary(), head, other, extend)], 0), options) -} - -// Extend all selections (pos is an array of selections with length -// equal the number of selections) -function extendSelections(doc, heads, options) { - var out = [] - var extend = doc.cm && (doc.cm.display.shift || doc.extend) - for (var i = 0; i < doc.sel.ranges.length; i++) - { out[i] = extendRange(doc.sel.ranges[i], heads[i], null, extend) } - var newSel = normalizeSelection(out, doc.sel.primIndex) - setSelection(doc, newSel, options) -} - -// Updates a single range in the selection. -function replaceOneSelection(doc, i, range, options) { - var ranges = doc.sel.ranges.slice(0) - ranges[i] = range - setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options) -} - -// Reset the selection to a single range. -function setSimpleSelection(doc, anchor, head, options) { - setSelection(doc, simpleSelection(anchor, head), options) -} - -// Give beforeSelectionChange handlers a change to influence a -// selection update. -function filterSelectionChange(doc, sel, options) { - var obj = { - ranges: sel.ranges, - update: function(ranges) { - var this$1 = this; - - this.ranges = [] - for (var i = 0; i < ranges.length; i++) - { this$1.ranges[i] = new Range(clipPos(doc, ranges[i].anchor), - clipPos(doc, ranges[i].head)) } - }, - origin: options && options.origin - } - signal(doc, "beforeSelectionChange", doc, obj) - if (doc.cm) { signal(doc.cm, "beforeSelectionChange", doc.cm, obj) } - if (obj.ranges != sel.ranges) { return normalizeSelection(obj.ranges, obj.ranges.length - 1) } - else { return sel } -} - -function setSelectionReplaceHistory(doc, sel, options) { - var done = doc.history.done, last = lst(done) - if (last && last.ranges) { - done[done.length - 1] = sel - setSelectionNoUndo(doc, sel, options) - } else { - setSelection(doc, sel, options) - } -} - -// Set a new selection. -function setSelection(doc, sel, options) { - setSelectionNoUndo(doc, sel, options) - addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options) -} - -function setSelectionNoUndo(doc, sel, options) { - if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) - { sel = filterSelectionChange(doc, sel, options) } - - var bias = options && options.bias || - (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1) - setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true)) - - if (!(options && options.scroll === false) && doc.cm) - { ensureCursorVisible(doc.cm) } -} - -function setSelectionInner(doc, sel) { - if (sel.equals(doc.sel)) { return } - - doc.sel = sel - - if (doc.cm) { - doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true - signalCursorActivity(doc.cm) - } - signalLater(doc, "cursorActivity", doc) -} - -// Verify that the selection does not partially select any atomic -// marked ranges. -function reCheckSelection(doc) { - setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false)) -} - -// Return a selection that does not partially select any atomic -// ranges. -function skipAtomicInSelection(doc, sel, bias, mayClear) { - var out - for (var i = 0; i < sel.ranges.length; i++) { - var range = sel.ranges[i] - var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i] - var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear) - var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear) - if (out || newAnchor != range.anchor || newHead != range.head) { - if (!out) { out = sel.ranges.slice(0, i) } - out[i] = new Range(newAnchor, newHead) + function buildCollapsedSpan(builder, size, marker, ignoreWidget) { + var widget = !ignoreWidget && marker.widgetNode; + if (widget) { builder.map.push(builder.pos, builder.pos + size, widget); } + if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) { + if (!widget) + { widget = builder.content.appendChild(document.createElement("span")); } + widget.setAttribute("cm-marker", marker.id); } - } - return out ? normalizeSelection(out, sel.primIndex) : sel -} - -function skipAtomicInner(doc, pos, oldPos, dir, mayClear) { - var line = getLine(doc, pos.line) - if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) { - var sp = line.markedSpans[i], m = sp.marker - if ((sp.from == null || (m.inclusiveLeft ? sp.from <= pos.ch : sp.from < pos.ch)) && - (sp.to == null || (m.inclusiveRight ? sp.to >= pos.ch : sp.to > pos.ch))) { - if (mayClear) { - signal(m, "beforeCursorEnter") - if (m.explicitlyCleared) { - if (!line.markedSpans) { break } - else {--i; continue} - } - } - if (!m.atomic) { continue } - - if (oldPos) { - var near = m.find(dir < 0 ? 1 : -1), diff = (void 0) - if (dir < 0 ? m.inclusiveRight : m.inclusiveLeft) - { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null) } - if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0)) - { return skipAtomicInner(doc, near, pos, dir, mayClear) } - } - - var far = m.find(dir < 0 ? -1 : 1) - if (dir < 0 ? m.inclusiveLeft : m.inclusiveRight) - { far = movePos(doc, far, dir, far.line == pos.line ? line : null) } - return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null + if (widget) { + builder.cm.display.input.setUneditable(widget); + builder.content.appendChild(widget); } - } } - return pos -} - -// Ensure a given position is not inside an atomic range. -function skipAtomic(doc, pos, oldPos, bias, mayClear) { - var dir = bias || 1 - var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) || - (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) || - skipAtomicInner(doc, pos, oldPos, -dir, mayClear) || - (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true)) - if (!found) { - doc.cantEdit = true - return Pos(doc.first, 0) - } - return found -} - -function movePos(doc, pos, dir, line) { - if (dir < 0 && pos.ch == 0) { - if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) } - else { return null } - } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) { - if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) } - else { return null } - } else { - return new Pos(pos.line, pos.ch + dir) - } -} - -function selectAll(cm) { - cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll) -} - -// UPDATING - -// Allow "beforeChange" event handlers to influence a change -function filterChange(doc, change, update) { - var obj = { - canceled: false, - from: change.from, - to: change.to, - text: change.text, - origin: change.origin, - cancel: function () { return obj.canceled = true; } - } - if (update) { obj.update = function (from, to, text, origin) { - if (from) { obj.from = clipPos(doc, from) } - if (to) { obj.to = clipPos(doc, to) } - if (text) { obj.text = text } - if (origin !== undefined) { obj.origin = origin } - } } - signal(doc, "beforeChange", doc, obj) - if (doc.cm) { signal(doc.cm, "beforeChange", doc.cm, obj) } - - if (obj.canceled) { return null } - return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin} -} - -// Apply a change to a document, and add it to the document's -// history, and propagating it to all linked documents. -function makeChange(doc, change, ignoreReadOnly) { - if (doc.cm) { - if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) } - if (doc.cm.state.suppressEdits) { return } + builder.pos += size; + builder.trailingSpace = false; } - if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) { - change = filterChange(doc, change, true) - if (!change) { return } - } - - // Possibly split or suppress the update based on the presence - // of read-only spans in its range. - var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to) - if (split) { - for (var i = split.length - 1; i >= 0; --i) - { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text, origin: change.origin}) } - } else { - makeChangeInner(doc, change) - } -} - -function makeChangeInner(doc, change) { - if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) { return } - var selAfter = computeSelAfterChange(doc, change) - addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN) - - makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change)) - var rebased = [] - - linkedDocs(doc, function (doc, sharedHist) { - if (!sharedHist && indexOf(rebased, doc.history) == -1) { - rebaseHist(doc.history, change) - rebased.push(doc.history) - } - makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change)) - }) -} - -// Revert a change stored in a document's history. -function makeChangeFromHistory(doc, type, allowSelectionOnly) { - var suppress = doc.cm && doc.cm.state.suppressEdits - if (suppress && !allowSelectionOnly) { return } - - var hist = doc.history, event, selAfter = doc.sel - var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done - - // Verify that there is a useable event (so that ctrl-z won't - // needlessly clear selection events) - var i = 0 - for (; i < source.length; i++) { - event = source[i] - if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges) - { break } - } - if (i == source.length) { return } - hist.lastOrigin = hist.lastSelOrigin = null - - for (;;) { - event = source.pop() - if (event.ranges) { - pushSelectionToHistory(event, dest) - if (allowSelectionOnly && !event.equals(doc.sel)) { - setSelection(doc, event, {clearRedo: false}) - return - } - selAfter = event - } else if (suppress) { - source.push(event) + // Outputs a number of spans to make up a line, taking highlighting + // and marked text into account. + function insertLineContent(line, builder, styles) { + var spans = line.markedSpans, allText = line.text, at = 0; + if (!spans) { + for (var i$1 = 1; i$1 < styles.length; i$1+=2) + { builder.addToken(builder, allText.slice(at, at = styles[i$1]), interpretTokenStyle(styles[i$1+1], builder.cm.options)); } return - } else { break } - } - - // Build up a reverse change object to add to the opposite history - // stack (redo when undoing, and vice versa). - var antiChanges = [] - pushSelectionToHistory(selAfter, dest) - dest.push({changes: antiChanges, generation: hist.generation}) - hist.generation = event.generation || ++hist.maxGeneration - - var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange") - - var loop = function ( i ) { - var change = event.changes[i] - change.origin = type - if (filter && !filterChange(doc, change, false)) { - source.length = 0 - return {} } - antiChanges.push(historyChangeFromChange(doc, change)) - - var after = i ? computeSelAfterChange(doc, change) : lst(source) - makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change)) - if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}) } - var rebased = [] - - // Propagate to the linked documents - linkedDocs(doc, function (doc, sharedHist) { - if (!sharedHist && indexOf(rebased, doc.history) == -1) { - rebaseHist(doc.history, change) - rebased.push(doc.history) - } - makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change)) - }) - }; - - for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) { - var returned = loop( i$1 ); - - if ( returned ) return returned.v; - } -} - -// Sub-views need their line numbers shifted when text is added -// above or below them in the parent document. -function shiftDoc(doc, distance) { - if (distance == 0) { return } - doc.first += distance - doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range( - Pos(range.anchor.line + distance, range.anchor.ch), - Pos(range.head.line + distance, range.head.ch) - ); }), doc.sel.primIndex) - if (doc.cm) { - regChange(doc.cm, doc.first, doc.first - distance, distance) - for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++) - { regLineChange(doc.cm, l, "gutter") } - } -} - -// More lower-level change function, handling only a single document -// (not linked ones). -function makeChangeSingleDoc(doc, change, selAfter, spans) { - if (doc.cm && !doc.cm.curOp) - { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) } - - if (change.to.line < doc.first) { - shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line)) - return - } - if (change.from.line > doc.lastLine()) { return } - - // Clip the change to the size of this doc - if (change.from.line < doc.first) { - var shift = change.text.length - 1 - (doc.first - change.from.line) - shiftDoc(doc, shift) - change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch), - text: [lst(change.text)], origin: change.origin} - } - var last = doc.lastLine() - if (change.to.line > last) { - change = {from: change.from, to: Pos(last, getLine(doc, last).text.length), - text: [change.text[0]], origin: change.origin} - } - - change.removed = getBetween(doc, change.from, change.to) - - if (!selAfter) { selAfter = computeSelAfterChange(doc, change) } - if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans) } - else { updateDoc(doc, change, spans) } - setSelectionNoUndo(doc, selAfter, sel_dontScroll) -} - -// Handle the interaction of a change to a document with the editor -// that this document is part of. -function makeChangeSingleDocInEditor(cm, change, spans) { - var doc = cm.doc, display = cm.display, from = change.from, to = change.to - - var recomputeMaxLength = false, checkWidthStart = from.line - if (!cm.options.lineWrapping) { - checkWidthStart = lineNo(visualLine(getLine(doc, from.line))) - doc.iter(checkWidthStart, to.line + 1, function (line) { - if (line == display.maxLine) { - recomputeMaxLength = true - return true - } - }) - } - - if (doc.sel.contains(change.from, change.to) > -1) - { signalCursorActivity(cm) } - - updateDoc(doc, change, spans, estimateHeight(cm)) - - if (!cm.options.lineWrapping) { - doc.iter(checkWidthStart, from.line + change.text.length, function (line) { - var len = lineLength(line) - if (len > display.maxLineLength) { - display.maxLine = line - display.maxLineLength = len - display.maxLineChanged = true - recomputeMaxLength = false - } - }) - if (recomputeMaxLength) { cm.curOp.updateMaxLine = true } - } - - retreatFrontier(doc, from.line) - startWorker(cm, 400) - - var lendiff = change.text.length - (to.line - from.line) - 1 - // Remember that these lines changed, for updating the display - if (change.full) - { regChange(cm) } - else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change)) - { regLineChange(cm, from.line, "text") } - else - { regChange(cm, from.line, to.line + 1, lendiff) } - - var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change") - if (changeHandler || changesHandler) { - var obj = { - from: from, to: to, - text: change.text, - removed: change.removed, - origin: change.origin - } - if (changeHandler) { signalLater(cm, "change", cm, obj) } - if (changesHandler) { (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj) } - } - cm.display.selForContextMenu = null -} - -function replaceRange(doc, code, from, to, origin) { - if (!to) { to = from } - if (cmp(to, from) < 0) { var assign; - (assign = [to, from], from = assign[0], to = assign[1], assign) } - if (typeof code == "string") { code = doc.splitLines(code) } - makeChange(doc, {from: from, to: to, text: code, origin: origin}) -} - -// Rebasing/resetting history to deal with externally-sourced changes - -function rebaseHistSelSingle(pos, from, to, diff) { - if (to < pos.line) { - pos.line += diff - } else if (from < pos.line) { - pos.line = from - pos.ch = 0 - } -} - -// Tries to rebase an array of history events given a change in the -// document. If the change touches the same lines as the event, the -// event, and everything 'behind' it, is discarded. If the change is -// before the event, the event's positions are updated. Uses a -// copy-on-write scheme for the positions, to avoid having to -// reallocate them all on every rebase, but also avoid problems with -// shared position objects being unsafely updated. -function rebaseHistArray(array, from, to, diff) { - for (var i = 0; i < array.length; ++i) { - var sub = array[i], ok = true - if (sub.ranges) { - if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true } - for (var j = 0; j < sub.ranges.length; j++) { - rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff) - rebaseHistSelSingle(sub.ranges[j].head, from, to, diff) - } - continue - } - for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) { - var cur = sub.changes[j$1] - if (to < cur.from.line) { - cur.from = Pos(cur.from.line + diff, cur.from.ch) - cur.to = Pos(cur.to.line + diff, cur.to.ch) - } else if (from <= cur.to.line) { - ok = false - break - } - } - if (!ok) { - array.splice(0, i + 1) - i = 0 - } - } -} - -function rebaseHist(hist, change) { - var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1 - rebaseHistArray(hist.done, from, to, diff) - rebaseHistArray(hist.undone, from, to, diff) -} - -// Utility for applying a change to a line by handle or number, -// returning the number and optionally registering the line as -// changed. -function changeLine(doc, handle, changeType, op) { - var no = handle, line = handle - if (typeof handle == "number") { line = getLine(doc, clipLine(doc, handle)) } - else { no = lineNo(handle) } - if (no == null) { return null } - if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType) } - return line -} - -// The document is represented as a BTree consisting of leaves, with -// chunk of lines in them, and branches, with up to ten leaves or -// other branch nodes below them. The top node is always a branch -// node, and is the document object itself (meaning it has -// additional methods and properties). -// -// All nodes have parent links. The tree is used both to go from -// line numbers to line objects, and to go from objects to numbers. -// It also indexes by height, and is used to convert between height -// and line object, and to find the total height of the document. -// -// See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html - -function LeafChunk(lines) { - var this$1 = this; - - this.lines = lines - this.parent = null - var height = 0 - for (var i = 0; i < lines.length; ++i) { - lines[i].parent = this$1 - height += lines[i].height - } - this.height = height -} - -LeafChunk.prototype = { - chunkSize: function chunkSize() { return this.lines.length }, - - // Remove the n lines at offset 'at'. - removeInner: function removeInner(at, n) { - var this$1 = this; - - for (var i = at, e = at + n; i < e; ++i) { - var line = this$1.lines[i] - this$1.height -= line.height - cleanUpLine(line) - signalLater(line, "delete") - } - this.lines.splice(at, n) - }, - - // Helper used to collapse a small branch into a single leaf. - collapse: function collapse(lines) { - lines.push.apply(lines, this.lines) - }, - - // Insert the given array of lines at offset 'at', count them as - // having the given height. - insertInner: function insertInner(at, lines, height) { - var this$1 = this; - - this.height += height - this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)) - for (var i = 0; i < lines.length; ++i) { lines[i].parent = this$1 } - }, - - // Used to iterate over a part of the tree. - iterN: function iterN(at, n, op) { - var this$1 = this; - - for (var e = at + n; at < e; ++at) - { if (op(this$1.lines[at])) { return true } } - } -} - -function BranchChunk(children) { - var this$1 = this; - - this.children = children - var size = 0, height = 0 - for (var i = 0; i < children.length; ++i) { - var ch = children[i] - size += ch.chunkSize(); height += ch.height - ch.parent = this$1 - } - this.size = size - this.height = height - this.parent = null -} - -BranchChunk.prototype = { - chunkSize: function chunkSize() { return this.size }, - - removeInner: function removeInner(at, n) { - var this$1 = this; - - this.size -= n - for (var i = 0; i < this.children.length; ++i) { - var child = this$1.children[i], sz = child.chunkSize() - if (at < sz) { - var rm = Math.min(n, sz - at), oldHeight = child.height - child.removeInner(at, rm) - this$1.height -= oldHeight - child.height - if (sz == rm) { this$1.children.splice(i--, 1); child.parent = null } - if ((n -= rm) == 0) { break } - at = 0 - } else { at -= sz } - } - // If the result is smaller than 25 lines, ensure that it is a - // single leaf node. - if (this.size - n < 25 && - (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) { - var lines = [] - this.collapse(lines) - this.children = [new LeafChunk(lines)] - this.children[0].parent = this - } - }, - - collapse: function collapse(lines) { - var this$1 = this; - - for (var i = 0; i < this.children.length; ++i) { this$1.children[i].collapse(lines) } - }, - - insertInner: function insertInner(at, lines, height) { - var this$1 = this; - - this.size += lines.length - this.height += height - for (var i = 0; i < this.children.length; ++i) { - var child = this$1.children[i], sz = child.chunkSize() - if (at <= sz) { - child.insertInner(at, lines, height) - if (child.lines && child.lines.length > 50) { - // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced. - // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest. - var remaining = child.lines.length % 25 + 25 - for (var pos = remaining; pos < child.lines.length;) { - var leaf = new LeafChunk(child.lines.slice(pos, pos += 25)) - child.height -= leaf.height - this$1.children.splice(++i, 0, leaf) - leaf.parent = this$1 + var len = allText.length, pos = 0, i = 1, text = "", style, css; + var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed, attributes; + for (;;) { + if (nextChange == pos) { // Update current marker set + spanStyle = spanEndStyle = spanStartStyle = css = ""; + attributes = null; + collapsed = null; nextChange = Infinity; + var foundBookmarks = [], endStyles = (void 0); + for (var j = 0; j < spans.length; ++j) { + var sp = spans[j], m = sp.marker; + if (m.type == "bookmark" && sp.from == pos && m.widgetNode) { + foundBookmarks.push(m); + } else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) { + if (sp.to != null && sp.to != pos && nextChange > sp.to) { + nextChange = sp.to; + spanEndStyle = ""; + } + if (m.className) { spanStyle += " " + m.className; } + if (m.css) { css = (css ? css + ";" : "") + m.css; } + if (m.startStyle && sp.from == pos) { spanStartStyle += " " + m.startStyle; } + if (m.endStyle && sp.to == nextChange) { (endStyles || (endStyles = [])).push(m.endStyle, sp.to); } + // support for the old title property + // https://github.com/codemirror/CodeMirror/pull/5673 + if (m.title) { (attributes || (attributes = {})).title = m.title; } + if (m.attributes) { + for (var attr in m.attributes) + { (attributes || (attributes = {}))[attr] = m.attributes[attr]; } + } + if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0)) + { collapsed = sp; } + } else if (sp.from > pos && nextChange > sp.from) { + nextChange = sp.from; } - child.lines = child.lines.slice(0, remaining) - this$1.maybeSpill() } - break - } - at -= sz - } - }, + if (endStyles) { for (var j$1 = 0; j$1 < endStyles.length; j$1 += 2) + { if (endStyles[j$1 + 1] == nextChange) { spanEndStyle += " " + endStyles[j$1]; } } } - // When a node has grown, check whether it should be split. - maybeSpill: function maybeSpill() { - if (this.children.length <= 10) { return } - var me = this + if (!collapsed || collapsed.from == pos) { for (var j$2 = 0; j$2 < foundBookmarks.length; ++j$2) + { buildCollapsedSpan(builder, 0, foundBookmarks[j$2]); } } + if (collapsed && (collapsed.from || 0) == pos) { + buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos, + collapsed.marker, collapsed.from == null); + if (collapsed.to == null) { return } + if (collapsed.to == pos) { collapsed = false; } + } + } + if (pos >= len) { break } + + var upto = Math.min(len, nextChange); + while (true) { + if (text) { + var end = pos + text.length; + if (!collapsed) { + var tokenText = end > upto ? text.slice(0, upto - pos) : text; + builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, + spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", css, attributes); + } + if (end >= upto) {text = text.slice(upto - pos); pos = upto; break} + pos = end; + spanStartStyle = ""; + } + text = allText.slice(at, at = styles[i++]); + style = interpretTokenStyle(styles[i++], builder.cm.options); + } + } + } + + + // These objects are used to represent the visible (currently drawn) + // part of the document. A LineView may correspond to multiple + // logical lines, if those are connected by collapsed ranges. + function LineView(doc, line, lineN) { + // The starting line + this.line = line; + // Continuing lines, if any + this.rest = visualLineContinued(line); + // Number of logical lines in this visual line + this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1; + this.node = this.text = null; + this.hidden = lineIsHidden(doc, line); + } + + // Create a range of LineView objects for the given lines. + function buildViewArray(cm, from, to) { + var array = [], nextPos; + for (var pos = from; pos < to; pos = nextPos) { + var view = new LineView(cm.doc, getLine(cm.doc, pos), pos); + nextPos = pos + view.size; + array.push(view); + } + return array + } + + var operationGroup = null; + + function pushOperation(op) { + if (operationGroup) { + operationGroup.ops.push(op); + } else { + op.ownsGroup = operationGroup = { + ops: [op], + delayedCallbacks: [] + }; + } + } + + function fireCallbacksForOps(group) { + // Calls delayed callbacks and cursorActivity handlers until no + // new ones appear + var callbacks = group.delayedCallbacks, i = 0; do { - var spilled = me.children.splice(me.children.length - 5, 5) - var sibling = new BranchChunk(spilled) - if (!me.parent) { // Become the parent node - var copy = new BranchChunk(me.children) - copy.parent = me - me.children = [copy, sibling] - me = copy - } else { - me.size -= sibling.size - me.height -= sibling.height - var myIndex = indexOf(me.parent.children, me) - me.parent.children.splice(myIndex + 1, 0, sibling) + for (; i < callbacks.length; i++) + { callbacks[i].call(null); } + for (var j = 0; j < group.ops.length; j++) { + var op = group.ops[j]; + if (op.cursorActivityHandlers) + { while (op.cursorActivityCalled < op.cursorActivityHandlers.length) + { op.cursorActivityHandlers[op.cursorActivityCalled++].call(null, op.cm); } } } - sibling.parent = me.parent - } while (me.children.length > 10) - me.parent.maybeSpill() - }, + } while (i < callbacks.length) + } - iterN: function iterN(at, n, op) { - var this$1 = this; + function finishOperation(op, endCb) { + var group = op.ownsGroup; + if (!group) { return } - for (var i = 0; i < this.children.length; ++i) { - var child = this$1.children[i], sz = child.chunkSize() - if (at < sz) { - var used = Math.min(n, sz - at) - if (child.iterN(at, used, op)) { return true } - if ((n -= used) == 0) { break } - at = 0 - } else { at -= sz } + try { fireCallbacksForOps(group); } + finally { + operationGroup = null; + endCb(group); } } -} -// Line widgets are block elements displayed above or below a line. - -var LineWidget = function(doc, node, options) { - var this$1 = this; - - if (options) { for (var opt in options) { if (options.hasOwnProperty(opt)) - { this$1[opt] = options[opt] } } } - this.doc = doc - this.node = node -}; - -LineWidget.prototype.clear = function () { - var this$1 = this; - - var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line) - if (no == null || !ws) { return } - for (var i = 0; i < ws.length; ++i) { if (ws[i] == this$1) { ws.splice(i--, 1) } } - if (!ws.length) { line.widgets = null } - var height = widgetHeight(this) - updateLineHeight(line, Math.max(0, line.height - height)) - if (cm) { - runInOp(cm, function () { - adjustScrollWhenAboveVisible(cm, line, -height) - regLineChange(cm, no, "widget") - }) - signalLater(cm, "lineWidgetCleared", cm, this, no) - } -}; - -LineWidget.prototype.changed = function () { - var this$1 = this; - - var oldH = this.height, cm = this.doc.cm, line = this.line - this.height = null - var diff = widgetHeight(this) - oldH - if (!diff) { return } - if (!lineIsHidden(this.doc, line)) { updateLineHeight(line, line.height + diff) } - if (cm) { - runInOp(cm, function () { - cm.curOp.forceUpdate = true - adjustScrollWhenAboveVisible(cm, line, diff) - signalLater(cm, "lineWidgetChanged", cm, this$1, lineNo(line)) - }) - } -}; -eventMixin(LineWidget) - -function adjustScrollWhenAboveVisible(cm, line, diff) { - if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop)) - { addToScrollTop(cm, diff) } -} - -function addLineWidget(doc, handle, node, options) { - var widget = new LineWidget(doc, node, options) - var cm = doc.cm - if (cm && widget.noHScroll) { cm.display.alignWidgets = true } - changeLine(doc, handle, "widget", function (line) { - var widgets = line.widgets || (line.widgets = []) - if (widget.insertAt == null) { widgets.push(widget) } - else { widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget) } - widget.line = line - if (cm && !lineIsHidden(doc, line)) { - var aboveVisible = heightAtLine(line) < doc.scrollTop - updateLineHeight(line, line.height + widgetHeight(widget)) - if (aboveVisible) { addToScrollTop(cm, widget.height) } - cm.curOp.forceUpdate = true - } - return true - }) - if (cm) { signalLater(cm, "lineWidgetAdded", cm, widget, typeof handle == "number" ? handle : lineNo(handle)) } - return widget -} - -// TEXTMARKERS - -// Created with markText and setBookmark methods. A TextMarker is a -// handle that can be used to clear or find a marked position in the -// document. Line objects hold arrays (markedSpans) containing -// {from, to, marker} object pointing to such marker objects, and -// indicating that such a marker is present on that line. Multiple -// lines may point to the same marker when it spans across lines. -// The spans will have null for their from/to properties when the -// marker continues beyond the start/end of the line. Markers have -// links back to the lines they currently touch. - -// Collapsed markers have unique ids, in order to be able to order -// them, which is needed for uniquely determining an outer marker -// when they overlap (they may nest, but not partially overlap). -var nextMarkerId = 0 - -var TextMarker = function(doc, type) { - this.lines = [] - this.type = type - this.doc = doc - this.id = ++nextMarkerId -}; - -// Clear the marker. -TextMarker.prototype.clear = function () { - var this$1 = this; - - if (this.explicitlyCleared) { return } - var cm = this.doc.cm, withOp = cm && !cm.curOp - if (withOp) { startOperation(cm) } - if (hasHandler(this, "clear")) { - var found = this.find() - if (found) { signalLater(this, "clear", found.from, found.to) } - } - var min = null, max = null - for (var i = 0; i < this.lines.length; ++i) { - var line = this$1.lines[i] - var span = getMarkedSpanFor(line.markedSpans, this$1) - if (cm && !this$1.collapsed) { regLineChange(cm, lineNo(line), "text") } - else if (cm) { - if (span.to != null) { max = lineNo(line) } - if (span.from != null) { min = lineNo(line) } - } - line.markedSpans = removeMarkedSpan(line.markedSpans, span) - if (span.from == null && this$1.collapsed && !lineIsHidden(this$1.doc, line) && cm) - { updateLineHeight(line, textHeight(cm.display)) } - } - if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) { - var visual = visualLine(this$1.lines[i$1]), len = lineLength(visual) - if (len > cm.display.maxLineLength) { - cm.display.maxLine = visual - cm.display.maxLineLength = len - cm.display.maxLineChanged = true - } - } } - - if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1) } - this.lines.length = 0 - this.explicitlyCleared = true - if (this.atomic && this.doc.cantEdit) { - this.doc.cantEdit = false - if (cm) { reCheckSelection(cm.doc) } - } - if (cm) { signalLater(cm, "markerCleared", cm, this, min, max) } - if (withOp) { endOperation(cm) } - if (this.parent) { this.parent.clear() } -}; - -// Find the position of the marker in the document. Returns a {from, -// to} object by default. Side can be passed to get a specific side -// -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the -// Pos objects returned contain a line object, rather than a line -// number (used to prevent looking up the same line twice). -TextMarker.prototype.find = function (side, lineObj) { - var this$1 = this; - - if (side == null && this.type == "bookmark") { side = 1 } - var from, to - for (var i = 0; i < this.lines.length; ++i) { - var line = this$1.lines[i] - var span = getMarkedSpanFor(line.markedSpans, this$1) - if (span.from != null) { - from = Pos(lineObj ? line : lineNo(line), span.from) - if (side == -1) { return from } - } - if (span.to != null) { - to = Pos(lineObj ? line : lineNo(line), span.to) - if (side == 1) { return to } - } - } - return from && {from: from, to: to} -}; - -// Signals that the marker's widget changed, and surrounding layout -// should be recomputed. -TextMarker.prototype.changed = function () { - var this$1 = this; - - var pos = this.find(-1, true), widget = this, cm = this.doc.cm - if (!pos || !cm) { return } - runInOp(cm, function () { - var line = pos.line, lineN = lineNo(pos.line) - var view = findViewForLine(cm, lineN) - if (view) { - clearLineMeasurementCacheFor(view) - cm.curOp.selectionChanged = cm.curOp.forceUpdate = true - } - cm.curOp.updateMaxLine = true - if (!lineIsHidden(widget.doc, line) && widget.height != null) { - var oldHeight = widget.height - widget.height = null - var dHeight = widgetHeight(widget) - oldHeight - if (dHeight) - { updateLineHeight(line, line.height + dHeight) } - } - signalLater(cm, "markerChanged", cm, this$1) - }) -}; - -TextMarker.prototype.attachLine = function (line) { - if (!this.lines.length && this.doc.cm) { - var op = this.doc.cm.curOp - if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) - { (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this) } - } - this.lines.push(line) -}; - -TextMarker.prototype.detachLine = function (line) { - this.lines.splice(indexOf(this.lines, line), 1) - if (!this.lines.length && this.doc.cm) { - var op = this.doc.cm.curOp - ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this) - } -}; -eventMixin(TextMarker) - -// Create a marker, wire it up to the right lines, and -function markText(doc, from, to, options, type) { - // Shared markers (across linked documents) are handled separately - // (markTextShared will call out to this again, once per - // document). - if (options && options.shared) { return markTextShared(doc, from, to, options, type) } - // Ensure we are in an operation. - if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) } - - var marker = new TextMarker(doc, type), diff = cmp(from, to) - if (options) { copyObj(options, marker, false) } - // Don't connect empty markers unless clearWhenEmpty is false - if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false) - { return marker } - if (marker.replacedWith) { - // Showing up as a widget implies collapsed (widget replaces text) - marker.collapsed = true - marker.widgetNode = eltP("span", [marker.replacedWith], "CodeMirror-widget") - if (!options.handleMouseEvents) { marker.widgetNode.setAttribute("cm-ignore-events", "true") } - if (options.insertLeft) { marker.widgetNode.insertLeft = true } - } - if (marker.collapsed) { - if (conflictingCollapsedRange(doc, from.line, from, to, marker) || - from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker)) - { throw new Error("Inserting collapsed marker partially overlapping an existing one") } - seeCollapsedSpans() - } - - if (marker.addToHistory) - { addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN) } - - var curLine = from.line, cm = doc.cm, updateMaxLine - doc.iter(curLine, to.line + 1, function (line) { - if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine) - { updateMaxLine = true } - if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0) } - addMarkedSpan(line, new MarkedSpan(marker, - curLine == from.line ? from.ch : null, - curLine == to.line ? to.ch : null)) - ++curLine - }) - // lineIsHidden depends on the presence of the spans, so needs a second pass - if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) { - if (lineIsHidden(doc, line)) { updateLineHeight(line, 0) } - }) } - - if (marker.clearOnEnter) { on(marker, "beforeCursorEnter", function () { return marker.clear(); }) } - - if (marker.readOnly) { - seeReadOnlySpans() - if (doc.history.done.length || doc.history.undone.length) - { doc.clearHistory() } - } - if (marker.collapsed) { - marker.id = ++nextMarkerId - marker.atomic = true - } - if (cm) { - // Sync editor state - if (updateMaxLine) { cm.curOp.updateMaxLine = true } - if (marker.collapsed) - { regChange(cm, from.line, to.line + 1) } - else if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.css) - { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, "text") } } - if (marker.atomic) { reCheckSelection(cm.doc) } - signalLater(cm, "markerAdded", cm, marker) - } - return marker -} - -// SHARED TEXTMARKERS - -// A shared marker spans multiple linked documents. It is -// implemented as a meta-marker-object controlling multiple normal -// markers. -var SharedTextMarker = function(markers, primary) { - var this$1 = this; - - this.markers = markers - this.primary = primary - for (var i = 0; i < markers.length; ++i) - { markers[i].parent = this$1 } -}; - -SharedTextMarker.prototype.clear = function () { - var this$1 = this; - - if (this.explicitlyCleared) { return } - this.explicitlyCleared = true - for (var i = 0; i < this.markers.length; ++i) - { this$1.markers[i].clear() } - signalLater(this, "clear") -}; - -SharedTextMarker.prototype.find = function (side, lineObj) { - return this.primary.find(side, lineObj) -}; -eventMixin(SharedTextMarker) - -function markTextShared(doc, from, to, options, type) { - options = copyObj(options) - options.shared = false - var markers = [markText(doc, from, to, options, type)], primary = markers[0] - var widget = options.widgetNode - linkedDocs(doc, function (doc) { - if (widget) { options.widgetNode = widget.cloneNode(true) } - markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)) - for (var i = 0; i < doc.linked.length; ++i) - { if (doc.linked[i].isParent) { return } } - primary = lst(markers) - }) - return new SharedTextMarker(markers, primary) -} - -function findSharedMarkers(doc) { - return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; }) -} - -function copySharedMarkers(doc, markers) { - for (var i = 0; i < markers.length; i++) { - var marker = markers[i], pos = marker.find() - var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to) - if (cmp(mFrom, mTo)) { - var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type) - marker.markers.push(subMark) - subMark.parent = marker - } - } -} - -function detachSharedMarkers(markers) { - var loop = function ( i ) { - var marker = markers[i], linked = [marker.primary.doc] - linkedDocs(marker.primary.doc, function (d) { return linked.push(d); }) - for (var j = 0; j < marker.markers.length; j++) { - var subMarker = marker.markers[j] - if (indexOf(linked, subMarker.doc) == -1) { - subMarker.parent = null - marker.markers.splice(j--, 1) - } - } - }; - - for (var i = 0; i < markers.length; i++) loop( i ); -} - -var nextDocId = 0 -var Doc = function(text, mode, firstLine, lineSep, direction) { - if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep, direction) } - if (firstLine == null) { firstLine = 0 } - - BranchChunk.call(this, [new LeafChunk([new Line("", null)])]) - this.first = firstLine - this.scrollTop = this.scrollLeft = 0 - this.cantEdit = false - this.cleanGeneration = 1 - this.modeFrontier = this.highlightFrontier = firstLine - var start = Pos(firstLine, 0) - this.sel = simpleSelection(start) - this.history = new History(null) - this.id = ++nextDocId - this.modeOption = mode - this.lineSep = lineSep - this.direction = (direction == "rtl") ? "rtl" : "ltr" - this.extend = false - - if (typeof text == "string") { text = this.splitLines(text) } - updateDoc(this, {from: start, to: start, text: text}) - setSelection(this, simpleSelection(start), sel_dontScroll) -} - -Doc.prototype = createObj(BranchChunk.prototype, { - constructor: Doc, - // Iterate over the document. Supports two forms -- with only one - // argument, it calls that for each line in the document. With - // three, it iterates over the range given by the first two (with - // the second being non-inclusive). - iter: function(from, to, op) { - if (op) { this.iterN(from - this.first, to - from, op) } - else { this.iterN(this.first, this.first + this.size, from) } - }, - - // Non-public interface for adding and removing lines. - insert: function(at, lines) { - var height = 0 - for (var i = 0; i < lines.length; ++i) { height += lines[i].height } - this.insertInner(at - this.first, lines, height) - }, - remove: function(at, n) { this.removeInner(at - this.first, n) }, - - // From here, the methods are part of the public interface. Most - // are also available from CodeMirror (editor) instances. - - getValue: function(lineSep) { - var lines = getLines(this, this.first, this.first + this.size) - if (lineSep === false) { return lines } - return lines.join(lineSep || this.lineSeparator()) - }, - setValue: docMethodOp(function(code) { - var top = Pos(this.first, 0), last = this.first + this.size - 1 - makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), - text: this.splitLines(code), origin: "setValue", full: true}, true) - if (this.cm) { scrollToCoords(this.cm, 0, 0) } - setSelection(this, simpleSelection(top), sel_dontScroll) - }), - replaceRange: function(code, from, to, origin) { - from = clipPos(this, from) - to = to ? clipPos(this, to) : from - replaceRange(this, code, from, to, origin) - }, - getRange: function(from, to, lineSep) { - var lines = getBetween(this, clipPos(this, from), clipPos(this, to)) - if (lineSep === false) { return lines } - return lines.join(lineSep || this.lineSeparator()) - }, - - getLine: function(line) {var l = this.getLineHandle(line); return l && l.text}, - - getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }}, - getLineNumber: function(line) {return lineNo(line)}, - - getLineHandleVisualStart: function(line) { - if (typeof line == "number") { line = getLine(this, line) } - return visualLine(line) - }, - - lineCount: function() {return this.size}, - firstLine: function() {return this.first}, - lastLine: function() {return this.first + this.size - 1}, - - clipPos: function(pos) {return clipPos(this, pos)}, - - getCursor: function(start) { - var range = this.sel.primary(), pos - if (start == null || start == "head") { pos = range.head } - else if (start == "anchor") { pos = range.anchor } - else if (start == "end" || start == "to" || start === false) { pos = range.to() } - else { pos = range.from() } - return pos - }, - listSelections: function() { return this.sel.ranges }, - somethingSelected: function() {return this.sel.somethingSelected()}, - - setCursor: docMethodOp(function(line, ch, options) { - setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options) - }), - setSelection: docMethodOp(function(anchor, head, options) { - setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options) - }), - extendSelection: docMethodOp(function(head, other, options) { - extendSelection(this, clipPos(this, head), other && clipPos(this, other), options) - }), - extendSelections: docMethodOp(function(heads, options) { - extendSelections(this, clipPosArray(this, heads), options) - }), - extendSelectionsBy: docMethodOp(function(f, options) { - var heads = map(this.sel.ranges, f) - extendSelections(this, clipPosArray(this, heads), options) - }), - setSelections: docMethodOp(function(ranges, primary, options) { - var this$1 = this; - - if (!ranges.length) { return } - var out = [] - for (var i = 0; i < ranges.length; i++) - { out[i] = new Range(clipPos(this$1, ranges[i].anchor), - clipPos(this$1, ranges[i].head)) } - if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex) } - setSelection(this, normalizeSelection(out, primary), options) - }), - addSelection: docMethodOp(function(anchor, head, options) { - var ranges = this.sel.ranges.slice(0) - ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor))) - setSelection(this, normalizeSelection(ranges, ranges.length - 1), options) - }), - - getSelection: function(lineSep) { - var this$1 = this; - - var ranges = this.sel.ranges, lines - for (var i = 0; i < ranges.length; i++) { - var sel = getBetween(this$1, ranges[i].from(), ranges[i].to()) - lines = lines ? lines.concat(sel) : sel - } - if (lineSep === false) { return lines } - else { return lines.join(lineSep || this.lineSeparator()) } - }, - getSelections: function(lineSep) { - var this$1 = this; - - var parts = [], ranges = this.sel.ranges - for (var i = 0; i < ranges.length; i++) { - var sel = getBetween(this$1, ranges[i].from(), ranges[i].to()) - if (lineSep !== false) { sel = sel.join(lineSep || this$1.lineSeparator()) } - parts[i] = sel - } - return parts - }, - replaceSelection: function(code, collapse, origin) { - var dup = [] - for (var i = 0; i < this.sel.ranges.length; i++) - { dup[i] = code } - this.replaceSelections(dup, collapse, origin || "+input") - }, - replaceSelections: docMethodOp(function(code, collapse, origin) { - var this$1 = this; - - var changes = [], sel = this.sel - for (var i = 0; i < sel.ranges.length; i++) { - var range = sel.ranges[i] - changes[i] = {from: range.from(), to: range.to(), text: this$1.splitLines(code[i]), origin: origin} - } - var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse) - for (var i$1 = changes.length - 1; i$1 >= 0; i$1--) - { makeChange(this$1, changes[i$1]) } - if (newSel) { setSelectionReplaceHistory(this, newSel) } - else if (this.cm) { ensureCursorVisible(this.cm) } - }), - undo: docMethodOp(function() {makeChangeFromHistory(this, "undo")}), - redo: docMethodOp(function() {makeChangeFromHistory(this, "redo")}), - undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true)}), - redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true)}), - - setExtending: function(val) {this.extend = val}, - getExtending: function() {return this.extend}, - - historySize: function() { - var hist = this.history, done = 0, undone = 0 - for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done } } - for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone } } - return {undo: done, redo: undone} - }, - clearHistory: function() {this.history = new History(this.history.maxGeneration)}, - - markClean: function() { - this.cleanGeneration = this.changeGeneration(true) - }, - changeGeneration: function(forceSplit) { - if (forceSplit) - { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null } - return this.history.generation - }, - isClean: function (gen) { - return this.history.generation == (gen || this.cleanGeneration) - }, - - getHistory: function() { - return {done: copyHistoryArray(this.history.done), - undone: copyHistoryArray(this.history.undone)} - }, - setHistory: function(histData) { - var hist = this.history = new History(this.history.maxGeneration) - hist.done = copyHistoryArray(histData.done.slice(0), null, true) - hist.undone = copyHistoryArray(histData.undone.slice(0), null, true) - }, - - setGutterMarker: docMethodOp(function(line, gutterID, value) { - return changeLine(this, line, "gutter", function (line) { - var markers = line.gutterMarkers || (line.gutterMarkers = {}) - markers[gutterID] = value - if (!value && isEmpty(markers)) { line.gutterMarkers = null } - return true - }) - }), - - clearGutter: docMethodOp(function(gutterID) { - var this$1 = this; - - this.iter(function (line) { - if (line.gutterMarkers && line.gutterMarkers[gutterID]) { - changeLine(this$1, line, "gutter", function () { - line.gutterMarkers[gutterID] = null - if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null } - return true - }) - } - }) - }), - - lineInfo: function(line) { - var n - if (typeof line == "number") { - if (!isLine(this, line)) { return null } - n = line - line = getLine(this, line) - if (!line) { return null } + var orphanDelayedCallbacks = null; + + // Often, we want to signal events at a point where we are in the + // middle of some work, but don't want the handler to start calling + // other methods on the editor, which might be in an inconsistent + // state or simply not expect any other events to happen. + // signalLater looks whether there are any handlers, and schedules + // them to be executed when the last operation ends, or, if no + // operation is active, when a timeout fires. + function signalLater(emitter, type /*, values...*/) { + var arr = getHandlers(emitter, type); + if (!arr.length) { return } + var args = Array.prototype.slice.call(arguments, 2), list; + if (operationGroup) { + list = operationGroup.delayedCallbacks; + } else if (orphanDelayedCallbacks) { + list = orphanDelayedCallbacks; } else { - n = lineNo(line) - if (n == null) { return null } + list = orphanDelayedCallbacks = []; + setTimeout(fireOrphanDelayed, 0); } - return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, - textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, - widgets: line.widgets} - }, + var loop = function ( i ) { + list.push(function () { return arr[i].apply(null, args); }); + }; - addLineClass: docMethodOp(function(handle, where, cls) { - return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) { - var prop = where == "text" ? "textClass" - : where == "background" ? "bgClass" - : where == "gutter" ? "gutterClass" : "wrapClass" - if (!line[prop]) { line[prop] = cls } - else if (classTest(cls).test(line[prop])) { return false } - else { line[prop] += " " + cls } - return true - }) - }), - removeLineClass: docMethodOp(function(handle, where, cls) { - return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) { - var prop = where == "text" ? "textClass" - : where == "background" ? "bgClass" - : where == "gutter" ? "gutterClass" : "wrapClass" - var cur = line[prop] - if (!cur) { return false } - else if (cls == null) { line[prop] = null } - else { - var found = cur.match(classTest(cls)) - if (!found) { return false } - var end = found.index + found[0].length - line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null - } - return true - }) - }), + for (var i = 0; i < arr.length; ++i) + loop( i ); + } - addLineWidget: docMethodOp(function(handle, node, options) { - return addLineWidget(this, handle, node, options) - }), - removeLineWidget: function(widget) { widget.clear() }, + function fireOrphanDelayed() { + var delayed = orphanDelayedCallbacks; + orphanDelayedCallbacks = null; + for (var i = 0; i < delayed.length; ++i) { delayed[i](); } + } - markText: function(from, to, options) { - return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || "range") - }, - setBookmark: function(pos, options) { - var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), - insertLeft: options && options.insertLeft, - clearWhenEmpty: false, shared: options && options.shared, - handleMouseEvents: options && options.handleMouseEvents} - pos = clipPos(this, pos) - return markText(this, pos, pos, realOpts, "bookmark") - }, - findMarksAt: function(pos) { - pos = clipPos(this, pos) - var markers = [], spans = getLine(this, pos.line).markedSpans - if (spans) { for (var i = 0; i < spans.length; ++i) { - var span = spans[i] - if ((span.from == null || span.from <= pos.ch) && - (span.to == null || span.to >= pos.ch)) - { markers.push(span.marker.parent || span.marker) } - } } - return markers - }, - findMarks: function(from, to, filter) { - from = clipPos(this, from); to = clipPos(this, to) - var found = [], lineNo = from.line - this.iter(from.line, to.line + 1, function (line) { - var spans = line.markedSpans - if (spans) { for (var i = 0; i < spans.length; i++) { - var span = spans[i] - if (!(span.to != null && lineNo == from.line && from.ch >= span.to || - span.from == null && lineNo != from.line || - span.from != null && lineNo == to.line && span.from >= to.ch) && - (!filter || filter(span.marker))) - { found.push(span.marker.parent || span.marker) } + // When an aspect of a line changes, a string is added to + // lineView.changes. This updates the relevant part of the line's + // DOM structure. + function updateLineForChanges(cm, lineView, lineN, dims) { + for (var j = 0; j < lineView.changes.length; j++) { + var type = lineView.changes[j]; + if (type == "text") { updateLineText(cm, lineView); } + else if (type == "gutter") { updateLineGutter(cm, lineView, lineN, dims); } + else if (type == "class") { updateLineClasses(cm, lineView); } + else if (type == "widget") { updateLineWidgets(cm, lineView, dims); } + } + lineView.changes = null; + } + + // Lines with gutter elements, widgets or a background class need to + // be wrapped, and have the extra elements added to the wrapper div + function ensureLineWrapped(lineView) { + if (lineView.node == lineView.text) { + lineView.node = elt("div", null, null, "position: relative"); + if (lineView.text.parentNode) + { lineView.text.parentNode.replaceChild(lineView.node, lineView.text); } + lineView.node.appendChild(lineView.text); + if (ie && ie_version < 8) { lineView.node.style.zIndex = 2; } + } + return lineView.node + } + + function updateLineBackground(cm, lineView) { + var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass; + if (cls) { cls += " CodeMirror-linebackground"; } + if (lineView.background) { + if (cls) { lineView.background.className = cls; } + else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; } + } else if (cls) { + var wrap = ensureLineWrapped(lineView); + lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild); + cm.display.input.setUneditable(lineView.background); + } + } + + // Wrapper around buildLineContent which will reuse the structure + // in display.externalMeasured when possible. + function getLineContent(cm, lineView) { + var ext = cm.display.externalMeasured; + if (ext && ext.line == lineView.line) { + cm.display.externalMeasured = null; + lineView.measure = ext.measure; + return ext.built + } + return buildLineContent(cm, lineView) + } + + // Redraw the line's text. Interacts with the background and text + // classes because the mode may output tokens that influence these + // classes. + function updateLineText(cm, lineView) { + var cls = lineView.text.className; + var built = getLineContent(cm, lineView); + if (lineView.text == lineView.node) { lineView.node = built.pre; } + lineView.text.parentNode.replaceChild(built.pre, lineView.text); + lineView.text = built.pre; + if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) { + lineView.bgClass = built.bgClass; + lineView.textClass = built.textClass; + updateLineClasses(cm, lineView); + } else if (cls) { + lineView.text.className = cls; + } + } + + function updateLineClasses(cm, lineView) { + updateLineBackground(cm, lineView); + if (lineView.line.wrapClass) + { ensureLineWrapped(lineView).className = lineView.line.wrapClass; } + else if (lineView.node != lineView.text) + { lineView.node.className = ""; } + var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass; + lineView.text.className = textClass || ""; + } + + function updateLineGutter(cm, lineView, lineN, dims) { + if (lineView.gutter) { + lineView.node.removeChild(lineView.gutter); + lineView.gutter = null; + } + if (lineView.gutterBackground) { + lineView.node.removeChild(lineView.gutterBackground); + lineView.gutterBackground = null; + } + if (lineView.line.gutterClass) { + var wrap = ensureLineWrapped(lineView); + lineView.gutterBackground = elt("div", null, "CodeMirror-gutter-background " + lineView.line.gutterClass, + ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px; width: " + (dims.gutterTotalWidth) + "px")); + cm.display.input.setUneditable(lineView.gutterBackground); + wrap.insertBefore(lineView.gutterBackground, lineView.text); + } + var markers = lineView.line.gutterMarkers; + if (cm.options.lineNumbers || markers) { + var wrap$1 = ensureLineWrapped(lineView); + var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", ("left: " + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px")); + cm.display.input.setUneditable(gutterWrap); + wrap$1.insertBefore(gutterWrap, lineView.text); + if (lineView.line.gutterClass) + { gutterWrap.className += " " + lineView.line.gutterClass; } + if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) + { lineView.lineNumber = gutterWrap.appendChild( + elt("div", lineNumberFor(cm.options, lineN), + "CodeMirror-linenumber CodeMirror-gutter-elt", + ("left: " + (dims.gutterLeft["CodeMirror-linenumbers"]) + "px; width: " + (cm.display.lineNumInnerWidth) + "px"))); } + if (markers) { for (var k = 0; k < cm.options.gutters.length; ++k) { + var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id]; + if (found) + { gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", + ("left: " + (dims.gutterLeft[id]) + "px; width: " + (dims.gutterWidth[id]) + "px"))); } } } - ++lineNo - }) - return found - }, - getAllMarks: function() { - var markers = [] - this.iter(function (line) { - var sps = line.markedSpans - if (sps) { for (var i = 0; i < sps.length; ++i) - { if (sps[i].from != null) { markers.push(sps[i].marker) } } } - }) - return markers - }, - - posFromIndex: function(off) { - var ch, lineNo = this.first, sepSize = this.lineSeparator().length - this.iter(function (line) { - var sz = line.text.length + sepSize - if (sz > off) { ch = off; return true } - off -= sz - ++lineNo - }) - return clipPos(this, Pos(lineNo, ch)) - }, - indexFromPos: function (coords) { - coords = clipPos(this, coords) - var index = coords.ch - if (coords.line < this.first || coords.ch < 0) { return 0 } - var sepSize = this.lineSeparator().length - this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value - index += line.text.length + sepSize - }) - return index - }, - - copy: function(copyHistory) { - var doc = new Doc(getLines(this, this.first, this.first + this.size), - this.modeOption, this.first, this.lineSep, this.direction) - doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft - doc.sel = this.sel - doc.extend = false - if (copyHistory) { - doc.history.undoDepth = this.history.undoDepth - doc.setHistory(this.getHistory()) } - return doc - }, + } - linkedDoc: function(options) { - if (!options) { options = {} } - var from = this.first, to = this.first + this.size - if (options.from != null && options.from > from) { from = options.from } - if (options.to != null && options.to < to) { to = options.to } - var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction) - if (options.sharedHist) { copy.history = this.history - ; }(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist}) - copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}] - copySharedMarkers(copy, findSharedMarkers(this)) - return copy - }, - unlinkDoc: function(other) { - var this$1 = this; - - if (other instanceof CodeMirror) { other = other.doc } - if (this.linked) { for (var i = 0; i < this.linked.length; ++i) { - var link = this$1.linked[i] - if (link.doc != other) { continue } - this$1.linked.splice(i, 1) - other.unlinkDoc(this$1) - detachSharedMarkers(findSharedMarkers(this$1)) - break - } } - // If the histories were shared, split them again - if (other.history == this.history) { - var splitIds = [other.id] - linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true) - other.history = new History(null) - other.history.done = copyHistoryArray(this.history.done, splitIds) - other.history.undone = copyHistoryArray(this.history.undone, splitIds) + function updateLineWidgets(cm, lineView, dims) { + if (lineView.alignable) { lineView.alignable = null; } + for (var node = lineView.node.firstChild, next = (void 0); node; node = next) { + next = node.nextSibling; + if (node.className == "CodeMirror-linewidget") + { lineView.node.removeChild(node); } } - }, - iterLinkedDocs: function(f) {linkedDocs(this, f)}, + insertLineWidgets(cm, lineView, dims); + } - getMode: function() {return this.mode}, - getEditor: function() {return this.cm}, + // Build a line's DOM representation from scratch + function buildLineElement(cm, lineView, lineN, dims) { + var built = getLineContent(cm, lineView); + lineView.text = lineView.node = built.pre; + if (built.bgClass) { lineView.bgClass = built.bgClass; } + if (built.textClass) { lineView.textClass = built.textClass; } - splitLines: function(str) { - if (this.lineSep) { return str.split(this.lineSep) } - return splitLinesAuto(str) - }, - lineSeparator: function() { return this.lineSep || "\n" }, + updateLineClasses(cm, lineView); + updateLineGutter(cm, lineView, lineN, dims); + insertLineWidgets(cm, lineView, dims); + return lineView.node + } - setDirection: docMethodOp(function (dir) { - if (dir != "rtl") { dir = "ltr" } - if (dir == this.direction) { return } - this.direction = dir - this.iter(function (line) { return line.order = null; }) - if (this.cm) { directionChanged(this.cm) } - }) -}) + // A lineView may contain multiple logical lines (when merged by + // collapsed spans). The widgets for all of them need to be drawn. + function insertLineWidgets(cm, lineView, dims) { + insertLineWidgetsFor(cm, lineView.line, lineView, dims, true); + if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++) + { insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false); } } + } -// Public alias. -Doc.prototype.eachLine = Doc.prototype.iter + function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) { + if (!line.widgets) { return } + var wrap = ensureLineWrapped(lineView); + for (var i = 0, ws = line.widgets; i < ws.length; ++i) { + var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget"); + if (!widget.handleMouseEvents) { node.setAttribute("cm-ignore-events", "true"); } + positionLineWidget(widget, node, lineView, dims); + cm.display.input.setUneditable(node); + if (allowAbove && widget.above) + { wrap.insertBefore(node, lineView.gutter || lineView.text); } + else + { wrap.appendChild(node); } + signalLater(widget, "redraw"); + } + } -// Kludge to work around strange IE behavior where it'll sometimes -// re-fire a series of drag-related events right after the drop (#1551) -var lastDrop = 0 + function positionLineWidget(widget, node, lineView, dims) { + if (widget.noHScroll) { + (lineView.alignable || (lineView.alignable = [])).push(node); + var width = dims.wrapperWidth; + node.style.left = dims.fixedPos + "px"; + if (!widget.coverGutter) { + width -= dims.gutterTotalWidth; + node.style.paddingLeft = dims.gutterTotalWidth + "px"; + } + node.style.width = width + "px"; + } + if (widget.coverGutter) { + node.style.zIndex = 5; + node.style.position = "relative"; + if (!widget.noHScroll) { node.style.marginLeft = -dims.gutterTotalWidth + "px"; } + } + } -function onDrop(e) { - var cm = this - clearDragCursor(cm) - if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) - { return } - e_preventDefault(e) - if (ie) { lastDrop = +new Date } - var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files - if (!pos || cm.isReadOnly()) { return } - // Might be a file drop, in which case we simply extract the text - // and insert it. - if (files && files.length && window.FileReader && window.File) { - var n = files.length, text = Array(n), read = 0 - var loadFile = function (file, i) { - if (cm.options.allowDropFileTypes && - indexOf(cm.options.allowDropFileTypes, file.type) == -1) - { return } + function widgetHeight(widget) { + if (widget.height != null) { return widget.height } + var cm = widget.doc.cm; + if (!cm) { return 0 } + if (!contains(document.body, widget.node)) { + var parentStyle = "position: relative;"; + if (widget.coverGutter) + { parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;"; } + if (widget.noHScroll) + { parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;"; } + removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle)); + } + return widget.height = widget.node.parentNode.offsetHeight + } - var reader = new FileReader - reader.onload = operation(cm, function () { - var content = reader.result - if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) { content = "" } - text[i] = content - if (++read == n) { - pos = clipPos(cm.doc, pos) - var change = {from: pos, to: pos, - text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())), - origin: "paste"} - makeChange(cm.doc, change) - setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change))) + // Return true when the given mouse event happened in a widget + function eventInWidget(display, e) { + for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { + if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") || + (n.parentNode == display.sizer && n != display.mover)) + { return true } + } + } + + // POSITION MEASUREMENT + + function paddingTop(display) {return display.lineSpace.offsetTop} + function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight} + function paddingH(display) { + if (display.cachedPaddingH) { return display.cachedPaddingH } + var e = removeChildrenAndAdd(display.measure, elt("pre", "x")); + var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle; + var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)}; + if (!isNaN(data.left) && !isNaN(data.right)) { display.cachedPaddingH = data; } + return data + } + + function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth } + function displayWidth(cm) { + return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth + } + function displayHeight(cm) { + return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight + } + + // Ensure the lineView.wrapping.heights array is populated. This is + // an array of bottom offsets for the lines that make up a drawn + // line. When lineWrapping is on, there might be more than one + // height. + function ensureLineHeights(cm, lineView, rect) { + var wrapping = cm.options.lineWrapping; + var curWidth = wrapping && displayWidth(cm); + if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) { + var heights = lineView.measure.heights = []; + if (wrapping) { + lineView.measure.width = curWidth; + var rects = lineView.text.firstChild.getClientRects(); + for (var i = 0; i < rects.length - 1; i++) { + var cur = rects[i], next = rects[i + 1]; + if (Math.abs(cur.bottom - next.bottom) > 2) + { heights.push((cur.bottom + next.top) / 2 - rect.top); } } - }) - reader.readAsText(file) - } - for (var i = 0; i < n; ++i) { loadFile(files[i], i) } - } else { // Normal drop - // Don't do a replace if the drop happened inside of the selected text. - if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) { - cm.state.draggingText(e) - // Ensure the editor is re-focused - setTimeout(function () { return cm.display.input.focus(); }, 20) - return - } - try { - var text$1 = e.dataTransfer.getData("Text") - if (text$1) { - var selected - if (cm.state.draggingText && !cm.state.draggingText.copy) - { selected = cm.listSelections() } - setSelectionNoUndo(cm.doc, simpleSelection(pos, pos)) - if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1) - { replaceRange(cm.doc, "", selected[i$1].anchor, selected[i$1].head, "drag") } } - cm.replaceSelection(text$1, "around", "paste") - cm.display.input.focus() } + heights.push(rect.bottom - rect.top); } - catch(e){} } -} -function onDragStart(cm, e) { - if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return } - if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return } + // Find a line map (mapping character offsets to text nodes) and a + // measurement cache for the given line number. (A line view might + // contain multiple lines when collapsed ranges are present.) + function mapFromLineView(lineView, line, lineN) { + if (lineView.line == line) + { return {map: lineView.measure.map, cache: lineView.measure.cache} } + for (var i = 0; i < lineView.rest.length; i++) + { if (lineView.rest[i] == line) + { return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]} } } + for (var i$1 = 0; i$1 < lineView.rest.length; i$1++) + { if (lineNo(lineView.rest[i$1]) > lineN) + { return {map: lineView.measure.maps[i$1], cache: lineView.measure.caches[i$1], before: true} } } + } - e.dataTransfer.setData("Text", cm.getSelection()) - e.dataTransfer.effectAllowed = "copyMove" + // Render a line into the hidden node display.externalMeasured. Used + // when measurement is needed for a line that's not in the viewport. + function updateExternalMeasurement(cm, line) { + line = visualLine(line); + var lineN = lineNo(line); + var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN); + view.lineN = lineN; + var built = view.built = buildLineContent(cm, view); + view.text = built.pre; + removeChildrenAndAdd(cm.display.lineMeasure, built.pre); + return view + } - // Use dummy image instead of default browsers image. - // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there. - if (e.dataTransfer.setDragImage && !safari) { - var img = elt("img", null, null, "position: fixed; left: 0; top: 0;") - img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" - if (presto) { - img.width = img.height = 1 - cm.display.wrapper.appendChild(img) - // Force a relayout, or Opera won't use our image for some obscure reason - img._top = img.offsetTop + // Get a {top, bottom, left, right} box (in line-local coordinates) + // for a given character. + function measureChar(cm, line, ch, bias) { + return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias) + } + + // Find a line view that corresponds to the given line number. + function findViewForLine(cm, lineN) { + if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo) + { return cm.display.view[findViewIndex(cm, lineN)] } + var ext = cm.display.externalMeasured; + if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size) + { return ext } + } + + // Measurement can be split in two steps, the set-up work that + // applies to the whole line, and the measurement of the actual + // character. Functions like coordsChar, that need to do a lot of + // measurements in a row, can thus ensure that the set-up work is + // only done once. + function prepareMeasureForLine(cm, line) { + var lineN = lineNo(line); + var view = findViewForLine(cm, lineN); + if (view && !view.text) { + view = null; + } else if (view && view.changes) { + updateLineForChanges(cm, view, lineN, getDimensions(cm)); + cm.curOp.forceUpdate = true; + } + if (!view) + { view = updateExternalMeasurement(cm, line); } + + var info = mapFromLineView(view, line, lineN); + return { + line: line, view: view, rect: null, + map: info.map, cache: info.cache, before: info.before, + hasHeights: false } - e.dataTransfer.setDragImage(img, 0, 0) - if (presto) { img.parentNode.removeChild(img) } } -} -function onDragOver(cm, e) { - var pos = posFromMouse(cm, e) - if (!pos) { return } - var frag = document.createDocumentFragment() - drawSelectionCursor(cm, pos, frag) - if (!cm.display.dragCursor) { - cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors") - cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv) - } - removeChildrenAndAdd(cm.display.dragCursor, frag) -} - -function clearDragCursor(cm) { - if (cm.display.dragCursor) { - cm.display.lineSpace.removeChild(cm.display.dragCursor) - cm.display.dragCursor = null - } -} - -// These must be handled carefully, because naively registering a -// handler for each editor will cause the editors to never be -// garbage collected. - -function forEachCodeMirror(f) { - if (!document.getElementsByClassName) { return } - var byClass = document.getElementsByClassName("CodeMirror") - for (var i = 0; i < byClass.length; i++) { - var cm = byClass[i].CodeMirror - if (cm) { f(cm) } - } -} - -var globalsRegistered = false -function ensureGlobalHandlers() { - if (globalsRegistered) { return } - registerGlobalHandlers() - globalsRegistered = true -} -function registerGlobalHandlers() { - // When the window resizes, we need to refresh active editors. - var resizeTimer - on(window, "resize", function () { - if (resizeTimer == null) { resizeTimer = setTimeout(function () { - resizeTimer = null - forEachCodeMirror(onResize) - }, 100) } - }) - // When the window loses focus, we want to show the editor as blurred - on(window, "blur", function () { return forEachCodeMirror(onBlur); }) -} -// Called when the window resizes -function onResize(cm) { - var d = cm.display - // Might be a text scaling operation, clear size caches. - d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null - d.scrollbarsClipped = false - cm.setSize() -} - -var keyNames = { - 3: "Pause", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", - 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", - 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", - 46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", - 106: "*", 107: "=", 109: "-", 110: ".", 111: "/", 127: "Delete", 145: "ScrollLock", - 173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", - 221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete", - 63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert" -} - -// Number keys -for (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i) } -// Alphabetic keys -for (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1) } -// Function keys -for (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = "F" + i$2 } - -var keyMap = {} - -keyMap.basic = { - "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", - "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", - "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore", - "Tab": "defaultTab", "Shift-Tab": "indentAuto", - "Enter": "newlineAndIndent", "Insert": "toggleOverwrite", - "Esc": "singleSelection" -} -// Note that the save and find-related commands aren't defined by -// default. User code or addons can define them. Unknown commands -// are simply ignored. -keyMap.pcDefault = { - "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", - "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown", - "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", - "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", - "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", - "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", - "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection", - "fallthrough": "basic" -} -// Very basic readline/emacs-style bindings, which are standard on Mac. -keyMap.emacsy = { - "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", - "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", - "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", - "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars", - "Ctrl-O": "openLine" -} -keyMap.macDefault = { - "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", - "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", - "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore", - "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", - "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", - "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight", - "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd", - "fallthrough": ["basic", "emacsy"] -} -keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault - -// KEYMAP DISPATCH - -function normalizeKeyName(name) { - var parts = name.split(/-(?!$)/) - name = parts[parts.length - 1] - var alt, ctrl, shift, cmd - for (var i = 0; i < parts.length - 1; i++) { - var mod = parts[i] - if (/^(cmd|meta|m)$/i.test(mod)) { cmd = true } - else if (/^a(lt)?$/i.test(mod)) { alt = true } - else if (/^(c|ctrl|control)$/i.test(mod)) { ctrl = true } - else if (/^s(hift)?$/i.test(mod)) { shift = true } - else { throw new Error("Unrecognized modifier name: " + mod) } - } - if (alt) { name = "Alt-" + name } - if (ctrl) { name = "Ctrl-" + name } - if (cmd) { name = "Cmd-" + name } - if (shift) { name = "Shift-" + name } - return name -} - -// This is a kludge to keep keymaps mostly working as raw objects -// (backwards compatibility) while at the same time support features -// like normalization and multi-stroke key bindings. It compiles a -// new normalized keymap, and then updates the old object to reflect -// this. -function normalizeKeyMap(keymap) { - var copy = {} - for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) { - var value = keymap[keyname] - if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) { continue } - if (value == "...") { delete keymap[keyname]; continue } - - var keys = map(keyname.split(" "), normalizeKeyName) - for (var i = 0; i < keys.length; i++) { - var val = (void 0), name = (void 0) - if (i == keys.length - 1) { - name = keys.join(" ") - val = value - } else { - name = keys.slice(0, i + 1).join(" ") - val = "..." + // Given a prepared measurement object, measures the position of an + // actual character (or fetches it from the cache). + function measureCharPrepared(cm, prepared, ch, bias, varHeight) { + if (prepared.before) { ch = -1; } + var key = ch + (bias || ""), found; + if (prepared.cache.hasOwnProperty(key)) { + found = prepared.cache[key]; + } else { + if (!prepared.rect) + { prepared.rect = prepared.view.text.getBoundingClientRect(); } + if (!prepared.hasHeights) { + ensureLineHeights(cm, prepared.view, prepared.rect); + prepared.hasHeights = true; } - var prev = copy[name] - if (!prev) { copy[name] = val } - else if (prev != val) { throw new Error("Inconsistent bindings for " + name) } - } - delete keymap[keyname] - } } - for (var prop in copy) { keymap[prop] = copy[prop] } - return keymap -} - -function lookupKey(key, map, handle, context) { - map = getKeyMap(map) - var found = map.call ? map.call(key, context) : map[key] - if (found === false) { return "nothing" } - if (found === "...") { return "multi" } - if (found != null && handle(found)) { return "handled" } - - if (map.fallthrough) { - if (Object.prototype.toString.call(map.fallthrough) != "[object Array]") - { return lookupKey(key, map.fallthrough, handle, context) } - for (var i = 0; i < map.fallthrough.length; i++) { - var result = lookupKey(key, map.fallthrough[i], handle, context) - if (result) { return result } + found = measureCharInner(cm, prepared, ch, bias); + if (!found.bogus) { prepared.cache[key] = found; } } + return {left: found.left, right: found.right, + top: varHeight ? found.rtop : found.top, + bottom: varHeight ? found.rbottom : found.bottom} } -} -// Modifier key presses don't count as 'real' key presses for the -// purpose of keymap fallthrough. -function isModifierKey(value) { - var name = typeof value == "string" ? value : keyNames[value.keyCode] - return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod" -} + var nullRect = {left: 0, right: 0, top: 0, bottom: 0}; -function addModifierNames(name, event, noShift) { - var base = name - if (event.altKey && base != "Alt") { name = "Alt-" + name } - if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") { name = "Ctrl-" + name } - if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") { name = "Cmd-" + name } - if (!noShift && event.shiftKey && base != "Shift") { name = "Shift-" + name } - return name -} - -// Look up the name of a key as indicated by an event object. -function keyName(event, noShift) { - if (presto && event.keyCode == 34 && event["char"]) { return false } - var name = keyNames[event.keyCode] - if (name == null || event.altGraphKey) { return false } - // Ctrl-ScrollLock has keyCode 3, same as Ctrl-Pause, - // so we'll use event.code when available (Chrome 48+, FF 38+, Safari 10.1+) - if (event.keyCode == 3 && event.code) { name = event.code } - return addModifierNames(name, event, noShift) -} - -function getKeyMap(val) { - return typeof val == "string" ? keyMap[val] : val -} - -// Helper for deleting text near the selection(s), used to implement -// backspace, delete, and similar functionality. -function deleteNearSelection(cm, compute) { - var ranges = cm.doc.sel.ranges, kill = [] - // Build up a set of ranges to kill first, merging overlapping - // ranges. - for (var i = 0; i < ranges.length; i++) { - var toKill = compute(ranges[i]) - while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) { - var replaced = kill.pop() - if (cmp(replaced.from, toKill.from) < 0) { - toKill.from = replaced.from + function nodeAndOffsetInLineMap(map$$1, ch, bias) { + var node, start, end, collapse, mStart, mEnd; + // First, search the line map for the text node corresponding to, + // or closest to, the target character. + for (var i = 0; i < map$$1.length; i += 3) { + mStart = map$$1[i]; + mEnd = map$$1[i + 1]; + if (ch < mStart) { + start = 0; end = 1; + collapse = "left"; + } else if (ch < mEnd) { + start = ch - mStart; + end = start + 1; + } else if (i == map$$1.length - 3 || ch == mEnd && map$$1[i + 3] > ch) { + end = mEnd - mStart; + start = end - 1; + if (ch >= mEnd) { collapse = "right"; } + } + if (start != null) { + node = map$$1[i + 2]; + if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right")) + { collapse = bias; } + if (bias == "left" && start == 0) + { while (i && map$$1[i - 2] == map$$1[i - 3] && map$$1[i - 1].insertLeft) { + node = map$$1[(i -= 3) + 2]; + collapse = "left"; + } } + if (bias == "right" && start == mEnd - mStart) + { while (i < map$$1.length - 3 && map$$1[i + 3] == map$$1[i + 4] && !map$$1[i + 5].insertLeft) { + node = map$$1[(i += 3) + 2]; + collapse = "right"; + } } break } } - kill.push(toKill) - } - // Next, remove those actual ranges. - runInOp(cm, function () { - for (var i = kill.length - 1; i >= 0; i--) - { replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete") } - ensureCursorVisible(cm) - }) -} - -function moveCharLogically(line, ch, dir) { - var target = skipExtendingChars(line.text, ch + dir, dir) - return target < 0 || target > line.text.length ? null : target -} - -function moveLogically(line, start, dir) { - var ch = moveCharLogically(line, start.ch, dir) - return ch == null ? null : new Pos(start.line, ch, dir < 0 ? "after" : "before") -} - -function endOfLine(visually, cm, lineObj, lineNo, dir) { - if (visually) { - var order = getOrder(lineObj, cm.doc.direction) - if (order) { - var part = dir < 0 ? lst(order) : order[0] - var moveInStorageOrder = (dir < 0) == (part.level == 1) - var sticky = moveInStorageOrder ? "after" : "before" - var ch - // With a wrapped rtl chunk (possibly spanning multiple bidi parts), - // it could be that the last bidi part is not on the last visual line, - // since visual lines contain content order-consecutive chunks. - // Thus, in rtl, we are looking for the first (content-order) character - // in the rtl chunk that is on the last line (that is, the same line - // as the last (content-order) character). - if (part.level > 0 || cm.doc.direction == "rtl") { - var prep = prepareMeasureForLine(cm, lineObj) - ch = dir < 0 ? lineObj.text.length - 1 : 0 - var targetTop = measureCharPrepared(cm, prep, ch).top - ch = findFirst(function (ch) { return measureCharPrepared(cm, prep, ch).top == targetTop; }, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch) - if (sticky == "before") { ch = moveCharLogically(lineObj, ch, 1) } - } else { ch = dir < 0 ? part.to : part.from } - return new Pos(lineNo, ch, sticky) - } - } - return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? "before" : "after") -} - -function moveVisually(cm, line, start, dir) { - var bidi = getOrder(line, cm.doc.direction) - if (!bidi) { return moveLogically(line, start, dir) } - if (start.ch >= line.text.length) { - start.ch = line.text.length - start.sticky = "before" - } else if (start.ch <= 0) { - start.ch = 0 - start.sticky = "after" - } - var partPos = getBidiPartAt(bidi, start.ch, start.sticky), part = bidi[partPos] - if (cm.doc.direction == "ltr" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) { - // Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines, - // nothing interesting happens. - return moveLogically(line, start, dir) + return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd} } - var mv = function (pos, dir) { return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir); } - var prep - var getWrappedLineExtent = function (ch) { - if (!cm.options.lineWrapping) { return {begin: 0, end: line.text.length} } - prep = prep || prepareMeasureForLine(cm, line) - return wrappedLineExtentChar(cm, line, prep, ch) - } - var wrappedLineExtent = getWrappedLineExtent(start.sticky == "before" ? mv(start, -1) : start.ch) - - if (cm.doc.direction == "rtl" || part.level == 1) { - var moveInStorageOrder = (part.level == 1) == (dir < 0) - var ch = mv(start, moveInStorageOrder ? 1 : -1) - if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) { - // Case 2: We move within an rtl part or in an rtl editor on the same visual line - var sticky = moveInStorageOrder ? "before" : "after" - return new Pos(start.line, ch, sticky) - } + function getUsefulRect(rects, bias) { + var rect = nullRect; + if (bias == "left") { for (var i = 0; i < rects.length; i++) { + if ((rect = rects[i]).left != rect.right) { break } + } } else { for (var i$1 = rects.length - 1; i$1 >= 0; i$1--) { + if ((rect = rects[i$1]).left != rect.right) { break } + } } + return rect } - // Case 3: Could not move within this bidi part in this visual line, so leave - // the current bidi part - - var searchInVisualLine = function (partPos, dir, wrappedLineExtent) { - var getRes = function (ch, moveInStorageOrder) { return moveInStorageOrder - ? new Pos(start.line, mv(ch, 1), "before") - : new Pos(start.line, ch, "after"); } - - for (; partPos >= 0 && partPos < bidi.length; partPos += dir) { - var part = bidi[partPos] - var moveInStorageOrder = (dir > 0) == (part.level != 1) - var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1) - if (part.from <= ch && ch < part.to) { return getRes(ch, moveInStorageOrder) } - ch = moveInStorageOrder ? part.from : mv(part.to, -1) - if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) { return getRes(ch, moveInStorageOrder) } - } - } - - // Case 3a: Look for other bidi parts on the same visual line - var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent) - if (res) { return res } - - // Case 3b: Look for other bidi parts on the next visual line - var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1) - if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) { - res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh)) - if (res) { return res } - } - - // Case 4: Nowhere to move - return null -} - -// Commands are parameter-less actions that can be performed on an -// editor, mostly used for keybindings. -var commands = { - selectAll: selectAll, - singleSelection: function (cm) { return cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); }, - killLine: function (cm) { return deleteNearSelection(cm, function (range) { - if (range.empty()) { - var len = getLine(cm.doc, range.head.line).text.length - if (range.head.ch == len && range.head.line < cm.lastLine()) - { return {from: range.head, to: Pos(range.head.line + 1, 0)} } - else - { return {from: range.head, to: Pos(range.head.line, len)} } - } else { - return {from: range.from(), to: range.to()} - } - }); }, - deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({ - from: Pos(range.from().line, 0), - to: clipPos(cm.doc, Pos(range.to().line + 1, 0)) - }); }); }, - delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({ - from: Pos(range.from().line, 0), to: range.from() - }); }); }, - delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { - var top = cm.charCoords(range.head, "div").top + 5 - var leftPos = cm.coordsChar({left: 0, top: top}, "div") - return {from: leftPos, to: range.from()} - }); }, - delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) { - var top = cm.charCoords(range.head, "div").top + 5 - var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div") - return {from: range.from(), to: rightPos } - }); }, - undo: function (cm) { return cm.undo(); }, - redo: function (cm) { return cm.redo(); }, - undoSelection: function (cm) { return cm.undoSelection(); }, - redoSelection: function (cm) { return cm.redoSelection(); }, - goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); }, - goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); }, - goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); }, - {origin: "+move", bias: 1} - ); }, - goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); }, - {origin: "+move", bias: 1} - ); }, - goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); }, - {origin: "+move", bias: -1} - ); }, - goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) { - var top = cm.cursorCoords(range.head, "div").top + 5 - return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div") - }, sel_move); }, - goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) { - var top = cm.cursorCoords(range.head, "div").top + 5 - return cm.coordsChar({left: 0, top: top}, "div") - }, sel_move); }, - goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) { - var top = cm.cursorCoords(range.head, "div").top + 5 - var pos = cm.coordsChar({left: 0, top: top}, "div") - if (pos.ch < cm.getLine(pos.line).search(/\S/)) { return lineStartSmart(cm, range.head) } - return pos - }, sel_move); }, - goLineUp: function (cm) { return cm.moveV(-1, "line"); }, - goLineDown: function (cm) { return cm.moveV(1, "line"); }, - goPageUp: function (cm) { return cm.moveV(-1, "page"); }, - goPageDown: function (cm) { return cm.moveV(1, "page"); }, - goCharLeft: function (cm) { return cm.moveH(-1, "char"); }, - goCharRight: function (cm) { return cm.moveH(1, "char"); }, - goColumnLeft: function (cm) { return cm.moveH(-1, "column"); }, - goColumnRight: function (cm) { return cm.moveH(1, "column"); }, - goWordLeft: function (cm) { return cm.moveH(-1, "word"); }, - goGroupRight: function (cm) { return cm.moveH(1, "group"); }, - goGroupLeft: function (cm) { return cm.moveH(-1, "group"); }, - goWordRight: function (cm) { return cm.moveH(1, "word"); }, - delCharBefore: function (cm) { return cm.deleteH(-1, "char"); }, - delCharAfter: function (cm) { return cm.deleteH(1, "char"); }, - delWordBefore: function (cm) { return cm.deleteH(-1, "word"); }, - delWordAfter: function (cm) { return cm.deleteH(1, "word"); }, - delGroupBefore: function (cm) { return cm.deleteH(-1, "group"); }, - delGroupAfter: function (cm) { return cm.deleteH(1, "group"); }, - indentAuto: function (cm) { return cm.indentSelection("smart"); }, - indentMore: function (cm) { return cm.indentSelection("add"); }, - indentLess: function (cm) { return cm.indentSelection("subtract"); }, - insertTab: function (cm) { return cm.replaceSelection("\t"); }, - insertSoftTab: function (cm) { - var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize - for (var i = 0; i < ranges.length; i++) { - var pos = ranges[i].from() - var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize) - spaces.push(spaceStr(tabSize - col % tabSize)) - } - cm.replaceSelections(spaces) - }, - defaultTab: function (cm) { - if (cm.somethingSelected()) { cm.indentSelection("add") } - else { cm.execCommand("insertTab") } - }, - // Swap the two chars left and right of each selection's head. - // Move cursor behind the two swapped characters afterwards. - // - // Doesn't consider line feeds a character. - // Doesn't scan more than one line above to find a character. - // Doesn't do anything on an empty line. - // Doesn't do anything with non-empty selections. - transposeChars: function (cm) { return runInOp(cm, function () { - var ranges = cm.listSelections(), newSel = [] - for (var i = 0; i < ranges.length; i++) { - if (!ranges[i].empty()) { continue } - var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text - if (line) { - if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1) } - if (cur.ch > 0) { - cur = new Pos(cur.line, cur.ch + 1) - cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2), - Pos(cur.line, cur.ch - 2), cur, "+transpose") - } else if (cur.line > cm.doc.first) { - var prev = getLine(cm.doc, cur.line - 1).text - if (prev) { - cur = new Pos(cur.line, 1) - cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() + - prev.charAt(prev.length - 1), - Pos(cur.line - 1, prev.length - 1), cur, "+transpose") - } - } - } - newSel.push(new Range(cur, cur)) - } - cm.setSelections(newSel) - }); }, - newlineAndIndent: function (cm) { return runInOp(cm, function () { - var sels = cm.listSelections() - for (var i = sels.length - 1; i >= 0; i--) - { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, "+input") } - sels = cm.listSelections() - for (var i$1 = 0; i$1 < sels.length; i$1++) - { cm.indentLine(sels[i$1].from().line, null, true) } - ensureCursorVisible(cm) - }); }, - openLine: function (cm) { return cm.replaceSelection("\n", "start"); }, - toggleOverwrite: function (cm) { return cm.toggleOverwrite(); } -} - - -function lineStart(cm, lineN) { - var line = getLine(cm.doc, lineN) - var visual = visualLine(line) - if (visual != line) { lineN = lineNo(visual) } - return endOfLine(true, cm, visual, lineN, 1) -} -function lineEnd(cm, lineN) { - var line = getLine(cm.doc, lineN) - var visual = visualLineEnd(line) - if (visual != line) { lineN = lineNo(visual) } - return endOfLine(true, cm, line, lineN, -1) -} -function lineStartSmart(cm, pos) { - var start = lineStart(cm, pos.line) - var line = getLine(cm.doc, start.line) - var order = getOrder(line, cm.doc.direction) - if (!order || order[0].level == 0) { - var firstNonWS = Math.max(0, line.text.search(/\S/)) - var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch - return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky) - } - return start -} - -// Run a handler that was bound to a key. -function doHandleBinding(cm, bound, dropShift) { - if (typeof bound == "string") { - bound = commands[bound] - if (!bound) { return false } - } - // Ensure previous input has been read, so that the handler sees a - // consistent view of the document - cm.display.input.ensurePolled() - var prevShift = cm.display.shift, done = false - try { - if (cm.isReadOnly()) { cm.state.suppressEdits = true } - if (dropShift) { cm.display.shift = false } - done = bound(cm) != Pass - } finally { - cm.display.shift = prevShift - cm.state.suppressEdits = false - } - return done -} - -function lookupKeyForEditor(cm, name, handle) { - for (var i = 0; i < cm.state.keyMaps.length; i++) { - var result = lookupKey(name, cm.state.keyMaps[i], handle, cm) - if (result) { return result } - } - return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm)) - || lookupKey(name, cm.options.keyMap, handle, cm) -} - -// Note that, despite the name, this function is also used to check -// for bound mouse clicks. - -var stopSeq = new Delayed - -function dispatchKey(cm, name, e, handle) { - var seq = cm.state.keySeq - if (seq) { - if (isModifierKey(name)) { return "handled" } - if (/\'$/.test(name)) - { cm.state.keySeq = null } - else - { stopSeq.set(50, function () { - if (cm.state.keySeq == seq) { - cm.state.keySeq = null - cm.display.input.reset() - } - }) } - if (dispatchKeyInner(cm, seq + " " + name, e, handle)) { return true } - } - return dispatchKeyInner(cm, name, e, handle) -} - -function dispatchKeyInner(cm, name, e, handle) { - var result = lookupKeyForEditor(cm, name, handle) - - if (result == "multi") - { cm.state.keySeq = name } - if (result == "handled") - { signalLater(cm, "keyHandled", cm, name, e) } - - if (result == "handled" || result == "multi") { - e_preventDefault(e) - restartBlink(cm) - } - - return !!result -} - -// Handle a key from the keydown event. -function handleKeyBinding(cm, e) { - var name = keyName(e, true) - if (!name) { return false } - - if (e.shiftKey && !cm.state.keySeq) { - // First try to resolve full name (including 'Shift-'). Failing - // that, see if there is a cursor-motion command (starting with - // 'go') bound to the keyname without 'Shift-'. - return dispatchKey(cm, "Shift-" + name, e, function (b) { return doHandleBinding(cm, b, true); }) - || dispatchKey(cm, name, e, function (b) { - if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) - { return doHandleBinding(cm, b) } - }) - } else { - return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); }) - } -} - -// Handle a key from the keypress event -function handleCharBinding(cm, e, ch) { - return dispatchKey(cm, "'" + ch + "'", e, function (b) { return doHandleBinding(cm, b, true); }) -} - -var lastStoppedKey = null -function onKeyDown(e) { - var cm = this - cm.curOp.focus = activeElt() - if (signalDOMEvent(cm, e)) { return } - // IE does strange things with escape. - if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false } - var code = e.keyCode - cm.display.shift = code == 16 || e.shiftKey - var handled = handleKeyBinding(cm, e) - if (presto) { - lastStoppedKey = handled ? code : null - // Opera has no cut event... we try to at least catch the key combo - if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) - { cm.replaceSelection("", null, "cut") } - } - - // Turn mouse into crosshair when Alt is held on Mac. - if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className)) - { showCrossHair(cm) } -} - -function showCrossHair(cm) { - var lineDiv = cm.display.lineDiv - addClass(lineDiv, "CodeMirror-crosshair") - - function up(e) { - if (e.keyCode == 18 || !e.altKey) { - rmClass(lineDiv, "CodeMirror-crosshair") - off(document, "keyup", up) - off(document, "mouseover", up) - } - } - on(document, "keyup", up) - on(document, "mouseover", up) -} - -function onKeyUp(e) { - if (e.keyCode == 16) { this.doc.sel.shift = false } - signalDOMEvent(this, e) -} - -function onKeyPress(e) { - var cm = this - if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) { return } - var keyCode = e.keyCode, charCode = e.charCode - if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return} - if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) { return } - var ch = String.fromCharCode(charCode == null ? keyCode : charCode) - // Some browsers fire keypress events for backspace - if (ch == "\x08") { return } - if (handleCharBinding(cm, e, ch)) { return } - cm.display.input.onKeyPress(e) -} - -var DOUBLECLICK_DELAY = 400 - -var PastClick = function(time, pos, button) { - this.time = time - this.pos = pos - this.button = button -}; - -PastClick.prototype.compare = function (time, pos, button) { - return this.time + DOUBLECLICK_DELAY > time && - cmp(pos, this.pos) == 0 && button == this.button -}; - -var lastClick; -var lastDoubleClick; -function clickRepeat(pos, button) { - var now = +new Date - if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) { - lastClick = lastDoubleClick = null - return "triple" - } else if (lastClick && lastClick.compare(now, pos, button)) { - lastDoubleClick = new PastClick(now, pos, button) - lastClick = null - return "double" - } else { - lastClick = new PastClick(now, pos, button) - lastDoubleClick = null - return "single" - } -} - -// A mouse down can be a single click, double click, triple click, -// start of selection drag, start of text drag, new cursor -// (ctrl-click), rectangle drag (alt-drag), or xwin -// middle-click-paste. Or it might be a click on something we should -// not interfere with, such as a scrollbar or widget. -function onMouseDown(e) { - var cm = this, display = cm.display - if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) { return } - display.input.ensurePolled() - display.shift = e.shiftKey - - if (eventInWidget(display, e)) { - if (!webkit) { - // Briefly turn off draggability, to allow widgets to do - // normal dragging things. - display.scroller.draggable = false - setTimeout(function () { return display.scroller.draggable = true; }, 100) - } - return - } - var button = e_button(e) - if (button == 3 && captureRightClick ? contextMenuInGutter(cm, e) : clickInGutter(cm, e)) { return } - var pos = posFromMouse(cm, e), repeat = pos ? clickRepeat(pos, button) : "single" - window.focus() - - // #3261: make sure, that we're not starting a second selection - if (button == 1 && cm.state.selectingText) - { cm.state.selectingText(e) } - - if (pos && handleMappedButton(cm, button, pos, repeat, e)) { return } - - if (button == 1) { - if (pos) { leftButtonDown(cm, pos, repeat, e) } - else if (e_target(e) == display.scroller) { e_preventDefault(e) } - } else if (button == 2) { - if (pos) { extendSelection(cm.doc, pos) } - setTimeout(function () { return display.input.focus(); }, 20) - } else if (button == 3) { - if (captureRightClick) { onContextMenu(cm, e) } - else { delayBlurEvent(cm) } - } -} - -function handleMappedButton(cm, button, pos, repeat, event) { - var name = "Click" - if (repeat == "double") { name = "Double" + name } - else if (repeat == "triple") { name = "Triple" + name } - name = (button == 1 ? "Left" : button == 2 ? "Middle" : "Right") + name - - return dispatchKey(cm, addModifierNames(name, event), event, function (bound) { - if (typeof bound == "string") { bound = commands[bound] } - if (!bound) { return false } - var done = false - try { - if (cm.isReadOnly()) { cm.state.suppressEdits = true } - done = bound(cm, pos) != Pass - } finally { - cm.state.suppressEdits = false - } - return done - }) -} - -function configureMouse(cm, repeat, event) { - var option = cm.getOption("configureMouse") - var value = option ? option(cm, repeat, event) : {} - if (value.unit == null) { - var rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey - value.unit = rect ? "rectangle" : repeat == "single" ? "char" : repeat == "double" ? "word" : "line" - } - if (value.extend == null || cm.doc.extend) { value.extend = cm.doc.extend || event.shiftKey } - if (value.addNew == null) { value.addNew = mac ? event.metaKey : event.ctrlKey } - if (value.moveOnDrag == null) { value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey) } - return value -} - -function leftButtonDown(cm, pos, repeat, event) { - if (ie) { setTimeout(bind(ensureFocus, cm), 0) } - else { cm.curOp.focus = activeElt() } - - var behavior = configureMouse(cm, repeat, event) - - var sel = cm.doc.sel, contained - if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() && - repeat == "single" && (contained = sel.contains(pos)) > -1 && - (cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) && - (cmp(contained.to(), pos) > 0 || pos.xRel < 0)) - { leftButtonStartDrag(cm, event, pos, behavior) } - else - { leftButtonSelect(cm, event, pos, behavior) } -} - -// Start a text drag. When it ends, see if any dragging actually -// happen, and treat as a click if it didn't. -function leftButtonStartDrag(cm, event, pos, behavior) { - var display = cm.display, moved = false - var dragEnd = operation(cm, function (e) { - if (webkit) { display.scroller.draggable = false } - cm.state.draggingText = false - off(display.wrapper.ownerDocument, "mouseup", dragEnd) - off(display.wrapper.ownerDocument, "mousemove", mouseMove) - off(display.scroller, "dragstart", dragStart) - off(display.scroller, "drop", dragEnd) - if (!moved) { - e_preventDefault(e) - if (!behavior.addNew) - { extendSelection(cm.doc, pos, null, null, behavior.extend) } - // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081) - if (webkit || ie && ie_version == 9) - { setTimeout(function () {display.wrapper.ownerDocument.body.focus(); display.input.focus()}, 20) } - else - { display.input.focus() } - } - }) - var mouseMove = function(e2) { - moved = moved || Math.abs(event.clientX - e2.clientX) + Math.abs(event.clientY - e2.clientY) >= 10 - } - var dragStart = function () { return moved = true; } - // Let the drag handler handle this. - if (webkit) { display.scroller.draggable = true } - cm.state.draggingText = dragEnd - dragEnd.copy = !behavior.moveOnDrag - // IE's approach to draggable - if (display.scroller.dragDrop) { display.scroller.dragDrop() } - on(display.wrapper.ownerDocument, "mouseup", dragEnd) - on(display.wrapper.ownerDocument, "mousemove", mouseMove) - on(display.scroller, "dragstart", dragStart) - on(display.scroller, "drop", dragEnd) - - delayBlurEvent(cm) - setTimeout(function () { return display.input.focus(); }, 20) -} - -function rangeForUnit(cm, pos, unit) { - if (unit == "char") { return new Range(pos, pos) } - if (unit == "word") { return cm.findWordAt(pos) } - if (unit == "line") { return new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) } - var result = unit(cm, pos) - return new Range(result.from, result.to) -} - -// Normal selection, as opposed to text dragging. -function leftButtonSelect(cm, event, start, behavior) { - var display = cm.display, doc = cm.doc - e_preventDefault(event) - - var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges - if (behavior.addNew && !behavior.extend) { - ourIndex = doc.sel.contains(start) - if (ourIndex > -1) - { ourRange = ranges[ourIndex] } - else - { ourRange = new Range(start, start) } - } else { - ourRange = doc.sel.primary() - ourIndex = doc.sel.primIndex - } - - if (behavior.unit == "rectangle") { - if (!behavior.addNew) { ourRange = new Range(start, start) } - start = posFromMouse(cm, event, true, true) - ourIndex = -1 - } else { - var range = rangeForUnit(cm, start, behavior.unit) - if (behavior.extend) - { ourRange = extendRange(ourRange, range.anchor, range.head, behavior.extend) } - else - { ourRange = range } - } - - if (!behavior.addNew) { - ourIndex = 0 - setSelection(doc, new Selection([ourRange], 0), sel_mouse) - startSel = doc.sel - } else if (ourIndex == -1) { - ourIndex = ranges.length - setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex), - {scroll: false, origin: "*mouse"}) - } else if (ranges.length > 1 && ranges[ourIndex].empty() && behavior.unit == "char" && !behavior.extend) { - setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0), - {scroll: false, origin: "*mouse"}) - startSel = doc.sel - } else { - replaceOneSelection(doc, ourIndex, ourRange, sel_mouse) - } - - var lastPos = start - function extendTo(pos) { - if (cmp(lastPos, pos) == 0) { return } - lastPos = pos - - if (behavior.unit == "rectangle") { - var ranges = [], tabSize = cm.options.tabSize - var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize) - var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize) - var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol) - for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line)); - line <= end; line++) { - var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize) - if (left == right) - { ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))) } - else if (text.length > leftPos) - { ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))) } - } - if (!ranges.length) { ranges.push(new Range(start, start)) } - setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex), - {origin: "*mouse", scroll: false}) - cm.scrollIntoView(pos) - } else { - var oldRange = ourRange - var range = rangeForUnit(cm, pos, behavior.unit) - var anchor = oldRange.anchor, head - if (cmp(range.anchor, anchor) > 0) { - head = range.head - anchor = minPos(oldRange.from(), range.anchor) - } else { - head = range.anchor - anchor = maxPos(oldRange.to(), range.head) - } - var ranges$1 = startSel.ranges.slice(0) - ranges$1[ourIndex] = bidiSimplify(cm, new Range(clipPos(doc, anchor), head)) - setSelection(doc, normalizeSelection(ranges$1, ourIndex), sel_mouse) - } - } - - var editorSize = display.wrapper.getBoundingClientRect() - // Used to ensure timeout re-tries don't fire when another extend - // happened in the meantime (clearTimeout isn't reliable -- at - // least on Chrome, the timeouts still happen even when cleared, - // if the clear happens after their scheduled firing time). - var counter = 0 - - function extend(e) { - var curCount = ++counter - var cur = posFromMouse(cm, e, true, behavior.unit == "rectangle") - if (!cur) { return } - if (cmp(cur, lastPos) != 0) { - cm.curOp.focus = activeElt() - extendTo(cur) - var visible = visibleLines(display, doc) - if (cur.line >= visible.to || cur.line < visible.from) - { setTimeout(operation(cm, function () {if (counter == curCount) { extend(e) }}), 150) } - } else { - var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0 - if (outside) { setTimeout(operation(cm, function () { - if (counter != curCount) { return } - display.scroller.scrollTop += outside - extend(e) - }), 50) } - } - } - - function done(e) { - cm.state.selectingText = false - counter = Infinity - e_preventDefault(e) - display.input.focus() - off(display.wrapper.ownerDocument, "mousemove", move) - off(display.wrapper.ownerDocument, "mouseup", up) - doc.history.lastSelOrigin = null - } - - var move = operation(cm, function (e) { - if (e.buttons === 0 || !e_button(e)) { done(e) } - else { extend(e) } - }) - var up = operation(cm, done) - cm.state.selectingText = up - on(display.wrapper.ownerDocument, "mousemove", move) - on(display.wrapper.ownerDocument, "mouseup", up) -} - -// Used when mouse-selecting to adjust the anchor to the proper side -// of a bidi jump depending on the visual position of the head. -function bidiSimplify(cm, range) { - var anchor = range.anchor; - var head = range.head; - var anchorLine = getLine(cm.doc, anchor.line) - if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) { return range } - var order = getOrder(anchorLine) - if (!order) { return range } - var index = getBidiPartAt(order, anchor.ch, anchor.sticky), part = order[index] - if (part.from != anchor.ch && part.to != anchor.ch) { return range } - var boundary = index + ((part.from == anchor.ch) == (part.level != 1) ? 0 : 1) - if (boundary == 0 || boundary == order.length) { return range } - - // Compute the relative visual position of the head compared to the - // anchor (<0 is to the left, >0 to the right) - var leftSide - if (head.line != anchor.line) { - leftSide = (head.line - anchor.line) * (cm.doc.direction == "ltr" ? 1 : -1) > 0 - } else { - var headIndex = getBidiPartAt(order, head.ch, head.sticky) - var dir = headIndex - index || (head.ch - anchor.ch) * (part.level == 1 ? -1 : 1) - if (headIndex == boundary - 1 || headIndex == boundary) - { leftSide = dir < 0 } - else - { leftSide = dir > 0 } - } - - var usePart = order[boundary + (leftSide ? -1 : 0)] - var from = leftSide == (usePart.level == 1) - var ch = from ? usePart.from : usePart.to, sticky = from ? "after" : "before" - return anchor.ch == ch && anchor.sticky == sticky ? range : new Range(new Pos(anchor.line, ch, sticky), head) -} - - -// Determines whether an event happened in the gutter, and fires the -// handlers for the corresponding event. -function gutterEvent(cm, e, type, prevent) { - var mX, mY - if (e.touches) { - mX = e.touches[0].clientX - mY = e.touches[0].clientY - } else { - try { mX = e.clientX; mY = e.clientY } - catch(e) { return false } - } - if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) { return false } - if (prevent) { e_preventDefault(e) } - - var display = cm.display - var lineBox = display.lineDiv.getBoundingClientRect() - - if (mY > lineBox.bottom || !hasHandler(cm, type)) { return e_defaultPrevented(e) } - mY -= lineBox.top - display.viewOffset - - for (var i = 0; i < cm.options.gutters.length; ++i) { - var g = display.gutters.childNodes[i] - if (g && g.getBoundingClientRect().right >= mX) { - var line = lineAtHeight(cm.doc, mY) - var gutter = cm.options.gutters[i] - signal(cm, type, cm, line, gutter, e) - return e_defaultPrevented(e) - } - } -} - -function clickInGutter(cm, e) { - return gutterEvent(cm, e, "gutterClick", true) -} - -// CONTEXT MENU HANDLING - -// To make the context menu work, we need to briefly unhide the -// textarea (making it as unobtrusive as possible) to let the -// right-click take effect on it. -function onContextMenu(cm, e) { - if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) { return } - if (signalDOMEvent(cm, e, "contextmenu")) { return } - cm.display.input.onContextMenu(e) -} - -function contextMenuInGutter(cm, e) { - if (!hasHandler(cm, "gutterContextMenu")) { return false } - return gutterEvent(cm, e, "gutterContextMenu", false) -} - -function themeChanged(cm) { - cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + - cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-") - clearCaches(cm) -} - -var Init = {toString: function(){return "CodeMirror.Init"}} - -var defaults = {} -var optionHandlers = {} - -function defineOptions(CodeMirror) { - var optionHandlers = CodeMirror.optionHandlers - - function option(name, deflt, handle, notOnInit) { - CodeMirror.defaults[name] = deflt - if (handle) { optionHandlers[name] = - notOnInit ? function (cm, val, old) {if (old != Init) { handle(cm, val, old) }} : handle } - } - - CodeMirror.defineOption = option - - // Passed to option handlers when there is no old value. - CodeMirror.Init = Init - - // These two are, on init, called from the constructor because they - // have to be initialized before the editor can start at all. - option("value", "", function (cm, val) { return cm.setValue(val); }, true) - option("mode", null, function (cm, val) { - cm.doc.modeOption = val - loadMode(cm) - }, true) - - option("indentUnit", 2, loadMode, true) - option("indentWithTabs", false) - option("smartIndent", true) - option("tabSize", 4, function (cm) { - resetModeState(cm) - clearCaches(cm) - regChange(cm) - }, true) - - option("lineSeparator", null, function (cm, val) { - cm.doc.lineSep = val - if (!val) { return } - var newBreaks = [], lineNo = cm.doc.first - cm.doc.iter(function (line) { - for (var pos = 0;;) { - var found = line.text.indexOf(val, pos) - if (found == -1) { break } - pos = found + val.length - newBreaks.push(Pos(lineNo, found)) - } - lineNo++ - }) - for (var i = newBreaks.length - 1; i >= 0; i--) - { replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length)) } - }) - option("specialChars", /[\u0000-\u001f\u007f-\u009f\u00ad\u061c\u200b-\u200f\u2028\u2029\ufeff]/g, function (cm, val, old) { - cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g") - if (old != Init) { cm.refresh() } - }) - option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function (cm) { return cm.refresh(); }, true) - option("electricChars", true) - option("inputStyle", mobile ? "contenteditable" : "textarea", function () { - throw new Error("inputStyle can not (yet) be changed in a running editor") // FIXME - }, true) - option("spellcheck", false, function (cm, val) { return cm.getInputField().spellcheck = val; }, true) - option("rtlMoveVisually", !windows) - option("wholeLineUpdateBefore", true) - - option("theme", "default", function (cm) { - themeChanged(cm) - guttersChanged(cm) - }, true) - option("keyMap", "default", function (cm, val, old) { - var next = getKeyMap(val) - var prev = old != Init && getKeyMap(old) - if (prev && prev.detach) { prev.detach(cm, next) } - if (next.attach) { next.attach(cm, prev || null) } - }) - option("extraKeys", null) - option("configureMouse", null) - - option("lineWrapping", false, wrappingChanged, true) - option("gutters", [], function (cm) { - setGuttersForLineNumbers(cm.options) - guttersChanged(cm) - }, true) - option("fixedGutter", true, function (cm, val) { - cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0" - cm.refresh() - }, true) - option("coverGutterNextToScrollbar", false, function (cm) { return updateScrollbars(cm); }, true) - option("scrollbarStyle", "native", function (cm) { - initScrollbars(cm) - updateScrollbars(cm) - cm.display.scrollbars.setScrollTop(cm.doc.scrollTop) - cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft) - }, true) - option("lineNumbers", false, function (cm) { - setGuttersForLineNumbers(cm.options) - guttersChanged(cm) - }, true) - option("firstLineNumber", 1, guttersChanged, true) - option("lineNumberFormatter", function (integer) { return integer; }, guttersChanged, true) - option("showCursorWhenSelecting", false, updateSelection, true) - - option("resetSelectionOnContextMenu", true) - option("lineWiseCopyCut", true) - option("pasteLinesPerSelection", true) - - option("readOnly", false, function (cm, val) { - if (val == "nocursor") { - onBlur(cm) - cm.display.input.blur() - } - cm.display.input.readOnlyChanged(val) - }) - option("disableInput", false, function (cm, val) {if (!val) { cm.display.input.reset() }}, true) - option("dragDrop", true, dragDropChanged) - option("allowDropFileTypes", null) - - option("cursorBlinkRate", 530) - option("cursorScrollMargin", 0) - option("cursorHeight", 1, updateSelection, true) - option("singleCursorHeightPerLine", true, updateSelection, true) - option("workTime", 100) - option("workDelay", 100) - option("flattenSpans", true, resetModeState, true) - option("addModeClass", false, resetModeState, true) - option("pollInterval", 100) - option("undoDepth", 200, function (cm, val) { return cm.doc.history.undoDepth = val; }) - option("historyEventDelay", 1250) - option("viewportMargin", 10, function (cm) { return cm.refresh(); }, true) - option("maxHighlightLength", 10000, resetModeState, true) - option("moveInputWithCursor", true, function (cm, val) { - if (!val) { cm.display.input.resetPosition() } - }) - - option("tabindex", null, function (cm, val) { return cm.display.input.getField().tabIndex = val || ""; }) - option("autofocus", null) - option("direction", "ltr", function (cm, val) { return cm.doc.setDirection(val); }, true) - option("phrases", null) -} - -function guttersChanged(cm) { - updateGutters(cm) - regChange(cm) - alignHorizontally(cm) -} - -function dragDropChanged(cm, value, old) { - var wasOn = old && old != Init - if (!value != !wasOn) { - var funcs = cm.display.dragFunctions - var toggle = value ? on : off - toggle(cm.display.scroller, "dragstart", funcs.start) - toggle(cm.display.scroller, "dragenter", funcs.enter) - toggle(cm.display.scroller, "dragover", funcs.over) - toggle(cm.display.scroller, "dragleave", funcs.leave) - toggle(cm.display.scroller, "drop", funcs.drop) - } -} - -function wrappingChanged(cm) { - if (cm.options.lineWrapping) { - addClass(cm.display.wrapper, "CodeMirror-wrap") - cm.display.sizer.style.minWidth = "" - cm.display.sizerWidth = null - } else { - rmClass(cm.display.wrapper, "CodeMirror-wrap") - findMaxLine(cm) - } - estimateLineHeights(cm) - regChange(cm) - clearCaches(cm) - setTimeout(function () { return updateScrollbars(cm); }, 100) -} - -// A CodeMirror instance represents an editor. This is the object -// that user code is usually dealing with. - -function CodeMirror(place, options) { - var this$1 = this; - - if (!(this instanceof CodeMirror)) { return new CodeMirror(place, options) } - - this.options = options = options ? copyObj(options) : {} - // Determine effective options based on given values and defaults. - copyObj(defaults, options, false) - setGuttersForLineNumbers(options) - - var doc = options.value - if (typeof doc == "string") { doc = new Doc(doc, options.mode, null, options.lineSeparator, options.direction) } - else if (options.mode) { doc.modeOption = options.mode } - this.doc = doc - - var input = new CodeMirror.inputStyles[options.inputStyle](this) - var display = this.display = new Display(place, doc, input) - display.wrapper.CodeMirror = this - updateGutters(this) - themeChanged(this) - if (options.lineWrapping) - { this.display.wrapper.className += " CodeMirror-wrap" } - initScrollbars(this) - - this.state = { - keyMaps: [], // stores maps added by addKeyMap - overlays: [], // highlighting overlays, as added by addOverlay - modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info - overwrite: false, - delayingBlurEvent: false, - focused: false, - suppressEdits: false, // used to disable editing during key handlers when in readOnly mode - pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll - selectingText: false, - draggingText: false, - highlight: new Delayed(), // stores highlight worker timeout - keySeq: null, // Unfinished key sequence - specialChars: null - } - - if (options.autofocus && !mobile) { display.input.focus() } - - // Override magic textarea content restore that IE sometimes does - // on our hidden textarea on reload - if (ie && ie_version < 11) { setTimeout(function () { return this$1.display.input.reset(true); }, 20) } - - registerEventHandlers(this) - ensureGlobalHandlers() - - startOperation(this) - this.curOp.forceUpdate = true - attachDoc(this, doc) - - if ((options.autofocus && !mobile) || this.hasFocus()) - { setTimeout(bind(onFocus, this), 20) } - else - { onBlur(this) } - - for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt)) - { optionHandlers[opt](this$1, options[opt], Init) } } - maybeUpdateLineNumberWidth(this) - if (options.finishInit) { options.finishInit(this) } - for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this$1) } - endOperation(this) - // Suppress optimizelegibility in Webkit, since it breaks text - // measuring on line wrapping boundaries. - if (webkit && options.lineWrapping && - getComputedStyle(display.lineDiv).textRendering == "optimizelegibility") - { display.lineDiv.style.textRendering = "auto" } -} - -// The default configuration options. -CodeMirror.defaults = defaults -// Functions to run when options are changed. -CodeMirror.optionHandlers = optionHandlers - -// Attach the necessary event handlers when initializing the editor -function registerEventHandlers(cm) { - var d = cm.display - on(d.scroller, "mousedown", operation(cm, onMouseDown)) - // Older IE's will not fire a second mousedown for a double click - if (ie && ie_version < 11) - { on(d.scroller, "dblclick", operation(cm, function (e) { - if (signalDOMEvent(cm, e)) { return } - var pos = posFromMouse(cm, e) - if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) { return } - e_preventDefault(e) - var word = cm.findWordAt(pos) - extendSelection(cm.doc, word.anchor, word.head) - })) } - else - { on(d.scroller, "dblclick", function (e) { return signalDOMEvent(cm, e) || e_preventDefault(e); }) } - // Some browsers fire contextmenu *after* opening the menu, at - // which point we can't mess with it anymore. Context menu is - // handled in onMouseDown for these browsers. - if (!captureRightClick) { on(d.scroller, "contextmenu", function (e) { return onContextMenu(cm, e); }) } - - // Used to suppress mouse event handling when a touch happens - var touchFinished, prevTouch = {end: 0} - function finishTouch() { - if (d.activeTouch) { - touchFinished = setTimeout(function () { return d.activeTouch = null; }, 1000) - prevTouch = d.activeTouch - prevTouch.end = +new Date - } - } - function isMouseLikeTouchEvent(e) { - if (e.touches.length != 1) { return false } - var touch = e.touches[0] - return touch.radiusX <= 1 && touch.radiusY <= 1 - } - function farAway(touch, other) { - if (other.left == null) { return true } - var dx = other.left - touch.left, dy = other.top - touch.top - return dx * dx + dy * dy > 20 * 20 - } - on(d.scroller, "touchstart", function (e) { - if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e) && !clickInGutter(cm, e)) { - d.input.ensurePolled() - clearTimeout(touchFinished) - var now = +new Date - d.activeTouch = {start: now, moved: false, - prev: now - prevTouch.end <= 300 ? prevTouch : null} - if (e.touches.length == 1) { - d.activeTouch.left = e.touches[0].pageX - d.activeTouch.top = e.touches[0].pageY - } - } - }) - on(d.scroller, "touchmove", function () { - if (d.activeTouch) { d.activeTouch.moved = true } - }) - on(d.scroller, "touchend", function (e) { - var touch = d.activeTouch - if (touch && !eventInWidget(d, e) && touch.left != null && - !touch.moved && new Date - touch.start < 300) { - var pos = cm.coordsChar(d.activeTouch, "page"), range - if (!touch.prev || farAway(touch, touch.prev)) // Single tap - { range = new Range(pos, pos) } - else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap - { range = cm.findWordAt(pos) } - else // Triple tap - { range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) } - cm.setSelection(range.anchor, range.head) - cm.focus() - e_preventDefault(e) - } - finishTouch() - }) - on(d.scroller, "touchcancel", finishTouch) - - // Sync scrolling between fake scrollbars and real scrollable - // area, ensure viewport is updated when scrolling. - on(d.scroller, "scroll", function () { - if (d.scroller.clientHeight) { - updateScrollTop(cm, d.scroller.scrollTop) - setScrollLeft(cm, d.scroller.scrollLeft, true) - signal(cm, "scroll", cm) - } - }) - - // Listen to wheel events in order to try and update the viewport on time. - on(d.scroller, "mousewheel", function (e) { return onScrollWheel(cm, e); }) - on(d.scroller, "DOMMouseScroll", function (e) { return onScrollWheel(cm, e); }) - - // Prevent wrapper from ever scrolling - on(d.wrapper, "scroll", function () { return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }) - - d.dragFunctions = { - enter: function (e) {if (!signalDOMEvent(cm, e)) { e_stop(e) }}, - over: function (e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e) }}, - start: function (e) { return onDragStart(cm, e); }, - drop: operation(cm, onDrop), - leave: function (e) {if (!signalDOMEvent(cm, e)) { clearDragCursor(cm) }} - } - - var inp = d.input.getField() - on(inp, "keyup", function (e) { return onKeyUp.call(cm, e); }) - on(inp, "keydown", operation(cm, onKeyDown)) - on(inp, "keypress", operation(cm, onKeyPress)) - on(inp, "focus", function (e) { return onFocus(cm, e); }) - on(inp, "blur", function (e) { return onBlur(cm, e); }) -} - -var initHooks = [] -CodeMirror.defineInitHook = function (f) { return initHooks.push(f); } - -// Indent the given line. The how parameter can be "smart", -// "add"/null, "subtract", or "prev". When aggressive is false -// (typically set to true for forced single-line indents), empty -// lines are not indented, and places where the mode returns Pass -// are left alone. -function indentLine(cm, n, how, aggressive) { - var doc = cm.doc, state - if (how == null) { how = "add" } - if (how == "smart") { - // Fall back to "prev" when the mode doesn't have an indentation - // method. - if (!doc.mode.indent) { how = "prev" } - else { state = getContextBefore(cm, n).state } - } - - var tabSize = cm.options.tabSize - var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize) - if (line.stateAfter) { line.stateAfter = null } - var curSpaceString = line.text.match(/^\s*/)[0], indentation - if (!aggressive && !/\S/.test(line.text)) { - indentation = 0 - how = "not" - } else if (how == "smart") { - indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text) - if (indentation == Pass || indentation > 150) { - if (!aggressive) { return } - how = "prev" - } - } - if (how == "prev") { - if (n > doc.first) { indentation = countColumn(getLine(doc, n-1).text, null, tabSize) } - else { indentation = 0 } - } else if (how == "add") { - indentation = curSpace + cm.options.indentUnit - } else if (how == "subtract") { - indentation = curSpace - cm.options.indentUnit - } else if (typeof how == "number") { - indentation = curSpace + how - } - indentation = Math.max(0, indentation) - - var indentString = "", pos = 0 - if (cm.options.indentWithTabs) - { for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t"} } - if (pos < indentation) { indentString += spaceStr(indentation - pos) } - - if (indentString != curSpaceString) { - replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input") - line.stateAfter = null - return true - } else { - // Ensure that, if the cursor was in the whitespace at the start - // of the line, it is moved to the end of that space. - for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) { - var range = doc.sel.ranges[i$1] - if (range.head.line == n && range.head.ch < curSpaceString.length) { - var pos$1 = Pos(n, curSpaceString.length) - replaceOneSelection(doc, i$1, new Range(pos$1, pos$1)) - break - } - } - } -} - -// This will be set to a {lineWise: bool, text: [string]} object, so -// that, when pasting, we know what kind of selections the copied -// text was made out of. -var lastCopied = null - -function setLastCopied(newLastCopied) { - lastCopied = newLastCopied -} - -function applyTextInput(cm, inserted, deleted, sel, origin) { - var doc = cm.doc - cm.display.shift = false - if (!sel) { sel = doc.sel } - - var paste = cm.state.pasteIncoming || origin == "paste" - var textLines = splitLinesAuto(inserted), multiPaste = null - // When pasting N lines into N selections, insert one line per selection - if (paste && sel.ranges.length > 1) { - if (lastCopied && lastCopied.text.join("\n") == inserted) { - if (sel.ranges.length % lastCopied.text.length == 0) { - multiPaste = [] - for (var i = 0; i < lastCopied.text.length; i++) - { multiPaste.push(doc.splitLines(lastCopied.text[i])) } - } - } else if (textLines.length == sel.ranges.length && cm.options.pasteLinesPerSelection) { - multiPaste = map(textLines, function (l) { return [l]; }) - } - } - - var updateInput - // Normal behavior is to insert the new text into every selection - for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) { - var range = sel.ranges[i$1] - var from = range.from(), to = range.to() - if (range.empty()) { - if (deleted && deleted > 0) // Handle deletion - { from = Pos(from.line, from.ch - deleted) } - else if (cm.state.overwrite && !paste) // Handle overwrite - { to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)) } - else if (lastCopied && lastCopied.lineWise && lastCopied.text.join("\n") == inserted) - { from = to = Pos(from.line, 0) } - } - updateInput = cm.curOp.updateInput - var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines, - origin: origin || (paste ? "paste" : cm.state.cutIncoming ? "cut" : "+input")} - makeChange(cm.doc, changeEvent) - signalLater(cm, "inputRead", cm, changeEvent) - } - if (inserted && !paste) - { triggerElectric(cm, inserted) } - - ensureCursorVisible(cm) - cm.curOp.updateInput = updateInput - cm.curOp.typing = true - cm.state.pasteIncoming = cm.state.cutIncoming = false -} - -function handlePaste(e, cm) { - var pasted = e.clipboardData && e.clipboardData.getData("Text") - if (pasted) { - e.preventDefault() - if (!cm.isReadOnly() && !cm.options.disableInput) - { runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, "paste"); }) } - return true - } -} - -function triggerElectric(cm, inserted) { - // When an 'electric' character is inserted, immediately trigger a reindent - if (!cm.options.electricChars || !cm.options.smartIndent) { return } - var sel = cm.doc.sel - - for (var i = sel.ranges.length - 1; i >= 0; i--) { - var range = sel.ranges[i] - if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) { continue } - var mode = cm.getModeAt(range.head) - var indented = false - if (mode.electricChars) { - for (var j = 0; j < mode.electricChars.length; j++) - { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) { - indented = indentLine(cm, range.head.line, "smart") - break - } } - } else if (mode.electricInput) { - if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch))) - { indented = indentLine(cm, range.head.line, "smart") } - } - if (indented) { signalLater(cm, "electricInput", cm, range.head.line) } - } -} - -function copyableRanges(cm) { - var text = [], ranges = [] - for (var i = 0; i < cm.doc.sel.ranges.length; i++) { - var line = cm.doc.sel.ranges[i].head.line - var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)} - ranges.push(lineRange) - text.push(cm.getRange(lineRange.anchor, lineRange.head)) - } - return {text: text, ranges: ranges} -} - -function disableBrowserMagic(field, spellcheck) { - field.setAttribute("autocorrect", "off") - field.setAttribute("autocapitalize", "off") - field.setAttribute("spellcheck", !!spellcheck) -} - -function hiddenTextarea() { - var te = elt("textarea", null, null, "position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; outline: none") - var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;") - // The textarea is kept positioned near the cursor to prevent the - // fact that it'll be scrolled into view on input from scrolling - // our fake cursor out of view. On webkit, when wrap=off, paste is - // very slow. So make the area wide instead. - if (webkit) { te.style.width = "1000px" } - else { te.setAttribute("wrap", "off") } - // If border: 0; -- iOS fails to open keyboard (issue #1287) - if (ios) { te.style.border = "1px solid black" } - disableBrowserMagic(te) - return div -} - -// The publicly visible API. Note that methodOp(f) means -// 'wrap f in an operation, performed on its `this` parameter'. - -// This is not the complete set of editor methods. Most of the -// methods defined on the Doc type are also injected into -// CodeMirror.prototype, for backwards compatibility and -// convenience. - -function addEditorMethods(CodeMirror) { - var optionHandlers = CodeMirror.optionHandlers - - var helpers = CodeMirror.helpers = {} - - CodeMirror.prototype = { - constructor: CodeMirror, - focus: function(){window.focus(); this.display.input.focus()}, - - setOption: function(option, value) { - var options = this.options, old = options[option] - if (options[option] == value && option != "mode") { return } - options[option] = value - if (optionHandlers.hasOwnProperty(option)) - { operation(this, optionHandlers[option])(this, value, old) } - signal(this, "optionChange", this, option) - }, - - getOption: function(option) {return this.options[option]}, - getDoc: function() {return this.doc}, - - addKeyMap: function(map, bottom) { - this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map)) - }, - removeKeyMap: function(map) { - var maps = this.state.keyMaps - for (var i = 0; i < maps.length; ++i) - { if (maps[i] == map || maps[i].name == map) { - maps.splice(i, 1) - return true - } } - }, - - addOverlay: methodOp(function(spec, options) { - var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec) - if (mode.startState) { throw new Error("Overlays may not be stateful.") } - insertSorted(this.state.overlays, - {mode: mode, modeSpec: spec, opaque: options && options.opaque, - priority: (options && options.priority) || 0}, - function (overlay) { return overlay.priority; }) - this.state.modeGen++ - regChange(this) - }), - removeOverlay: methodOp(function(spec) { - var this$1 = this; - - var overlays = this.state.overlays - for (var i = 0; i < overlays.length; ++i) { - var cur = overlays[i].modeSpec - if (cur == spec || typeof spec == "string" && cur.name == spec) { - overlays.splice(i, 1) - this$1.state.modeGen++ - regChange(this$1) - return - } - } - }), - - indentLine: methodOp(function(n, dir, aggressive) { - if (typeof dir != "string" && typeof dir != "number") { - if (dir == null) { dir = this.options.smartIndent ? "smart" : "prev" } - else { dir = dir ? "add" : "subtract" } - } - if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive) } - }), - indentSelection: methodOp(function(how) { - var this$1 = this; - - var ranges = this.doc.sel.ranges, end = -1 - for (var i = 0; i < ranges.length; i++) { - var range = ranges[i] - if (!range.empty()) { - var from = range.from(), to = range.to() - var start = Math.max(end, from.line) - end = Math.min(this$1.lastLine(), to.line - (to.ch ? 0 : 1)) + 1 - for (var j = start; j < end; ++j) - { indentLine(this$1, j, how) } - var newRanges = this$1.doc.sel.ranges - if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0) - { replaceOneSelection(this$1.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll) } - } else if (range.head.line > end) { - indentLine(this$1, range.head.line, how, true) - end = range.head.line - if (i == this$1.doc.sel.primIndex) { ensureCursorVisible(this$1) } - } - } - }), - - // Fetch the parser token for a given character. Useful for hacks - // that want to inspect the mode state (say, for completion). - getTokenAt: function(pos, precise) { - return takeToken(this, pos, precise) - }, - - getLineTokens: function(line, precise) { - return takeToken(this, Pos(line), precise, true) - }, - - getTokenTypeAt: function(pos) { - pos = clipPos(this.doc, pos) - var styles = getLineStyles(this, getLine(this.doc, pos.line)) - var before = 0, after = (styles.length - 1) / 2, ch = pos.ch - var type - if (ch == 0) { type = styles[2] } - else { for (;;) { - var mid = (before + after) >> 1 - if ((mid ? styles[mid * 2 - 1] : 0) >= ch) { after = mid } - else if (styles[mid * 2 + 1] < ch) { before = mid + 1 } - else { type = styles[mid * 2 + 2]; break } - } } - var cut = type ? type.indexOf("overlay ") : -1 - return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1) - }, - - getModeAt: function(pos) { - var mode = this.doc.mode - if (!mode.innerMode) { return mode } - return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode - }, - - getHelper: function(pos, type) { - return this.getHelpers(pos, type)[0] - }, - - getHelpers: function(pos, type) { - var this$1 = this; - - var found = [] - if (!helpers.hasOwnProperty(type)) { return found } - var help = helpers[type], mode = this.getModeAt(pos) - if (typeof mode[type] == "string") { - if (help[mode[type]]) { found.push(help[mode[type]]) } - } else if (mode[type]) { - for (var i = 0; i < mode[type].length; i++) { - var val = help[mode[type][i]] - if (val) { found.push(val) } - } - } else if (mode.helperType && help[mode.helperType]) { - found.push(help[mode.helperType]) - } else if (help[mode.name]) { - found.push(help[mode.name]) - } - for (var i$1 = 0; i$1 < help._global.length; i$1++) { - var cur = help._global[i$1] - if (cur.pred(mode, this$1) && indexOf(found, cur.val) == -1) - { found.push(cur.val) } - } - return found - }, - - getStateAfter: function(line, precise) { - var doc = this.doc - line = clipLine(doc, line == null ? doc.first + doc.size - 1: line) - return getContextBefore(this, line + 1, precise).state - }, - - cursorCoords: function(start, mode) { - var pos, range = this.doc.sel.primary() - if (start == null) { pos = range.head } - else if (typeof start == "object") { pos = clipPos(this.doc, start) } - else { pos = start ? range.from() : range.to() } - return cursorCoords(this, pos, mode || "page") - }, - - charCoords: function(pos, mode) { - return charCoords(this, clipPos(this.doc, pos), mode || "page") - }, - - coordsChar: function(coords, mode) { - coords = fromCoordSystem(this, coords, mode || "page") - return coordsChar(this, coords.left, coords.top) - }, - - lineAtHeight: function(height, mode) { - height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top - return lineAtHeight(this.doc, height + this.display.viewOffset) - }, - heightAtLine: function(line, mode, includeWidgets) { - var end = false, lineObj - if (typeof line == "number") { - var last = this.doc.first + this.doc.size - 1 - if (line < this.doc.first) { line = this.doc.first } - else if (line > last) { line = last; end = true } - lineObj = getLine(this.doc, line) - } else { - lineObj = line - } - return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page", includeWidgets || end).top + - (end ? this.doc.height - heightAtLine(lineObj) : 0) - }, - - defaultTextHeight: function() { return textHeight(this.display) }, - defaultCharWidth: function() { return charWidth(this.display) }, - - getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo}}, - - addWidget: function(pos, node, scroll, vert, horiz) { - var display = this.display - pos = cursorCoords(this, clipPos(this.doc, pos)) - var top = pos.bottom, left = pos.left - node.style.position = "absolute" - node.setAttribute("cm-ignore-events", "true") - this.display.input.setUneditable(node) - display.sizer.appendChild(node) - if (vert == "over") { - top = pos.top - } else if (vert == "above" || vert == "near") { - var vspace = Math.max(display.wrapper.clientHeight, this.doc.height), - hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth) - // Default to positioning above (if specified and possible); otherwise default to positioning below - if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight) - { top = pos.top - node.offsetHeight } - else if (pos.bottom + node.offsetHeight <= vspace) - { top = pos.bottom } - if (left + node.offsetWidth > hspace) - { left = hspace - node.offsetWidth } - } - node.style.top = top + "px" - node.style.left = node.style.right = "" - if (horiz == "right") { - left = display.sizer.clientWidth - node.offsetWidth - node.style.right = "0px" - } else { - if (horiz == "left") { left = 0 } - else if (horiz == "middle") { left = (display.sizer.clientWidth - node.offsetWidth) / 2 } - node.style.left = left + "px" - } - if (scroll) - { scrollIntoView(this, {left: left, top: top, right: left + node.offsetWidth, bottom: top + node.offsetHeight}) } - }, - - triggerOnKeyDown: methodOp(onKeyDown), - triggerOnKeyPress: methodOp(onKeyPress), - triggerOnKeyUp: onKeyUp, - triggerOnMouseDown: methodOp(onMouseDown), - - execCommand: function(cmd) { - if (commands.hasOwnProperty(cmd)) - { return commands[cmd].call(null, this) } - }, - - triggerElectric: methodOp(function(text) { triggerElectric(this, text) }), - - findPosH: function(from, amount, unit, visually) { - var this$1 = this; - - var dir = 1 - if (amount < 0) { dir = -1; amount = -amount } - var cur = clipPos(this.doc, from) - for (var i = 0; i < amount; ++i) { - cur = findPosH(this$1.doc, cur, dir, unit, visually) - if (cur.hitSide) { break } - } - return cur - }, - - moveH: methodOp(function(dir, unit) { - var this$1 = this; - - this.extendSelectionsBy(function (range) { - if (this$1.display.shift || this$1.doc.extend || range.empty()) - { return findPosH(this$1.doc, range.head, dir, unit, this$1.options.rtlMoveVisually) } + function measureCharInner(cm, prepared, ch, bias) { + var place = nodeAndOffsetInLineMap(prepared.map, ch, bias); + var node = place.node, start = place.start, end = place.end, collapse = place.collapse; + + var rect; + if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates. + for (var i$1 = 0; i$1 < 4; i$1++) { // Retry a maximum of 4 times when nonsense rectangles are returned + while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) { --start; } + while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) { ++end; } + if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) + { rect = node.parentNode.getBoundingClientRect(); } else - { return dir < 0 ? range.from() : range.to() } - }, sel_move) - }), - - deleteH: methodOp(function(dir, unit) { - var sel = this.doc.sel, doc = this.doc - if (sel.somethingSelected()) - { doc.replaceSelection("", null, "+delete") } + { rect = getUsefulRect(range(node, start, end).getClientRects(), bias); } + if (rect.left || rect.right || start == 0) { break } + end = start; + start = start - 1; + collapse = "right"; + } + if (ie && ie_version < 11) { rect = maybeUpdateRectForZooming(cm.display.measure, rect); } + } else { // If it is a widget, simply get the box for the whole widget. + if (start > 0) { collapse = bias = "right"; } + var rects; + if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1) + { rect = rects[bias == "right" ? rects.length - 1 : 0]; } else - { deleteNearSelection(this, function (range) { - var other = findPosH(doc, range.head, dir, unit, false) - return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other} - }) } - }), - - findPosV: function(from, amount, unit, goalColumn) { - var this$1 = this; - - var dir = 1, x = goalColumn - if (amount < 0) { dir = -1; amount = -amount } - var cur = clipPos(this.doc, from) - for (var i = 0; i < amount; ++i) { - var coords = cursorCoords(this$1, cur, "div") - if (x == null) { x = coords.left } - else { coords.left = x } - cur = findPosV(this$1, coords, dir, unit) - if (cur.hitSide) { break } - } - return cur - }, - - moveV: methodOp(function(dir, unit) { - var this$1 = this; - - var doc = this.doc, goals = [] - var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected() - doc.extendSelectionsBy(function (range) { - if (collapse) - { return dir < 0 ? range.from() : range.to() } - var headPos = cursorCoords(this$1, range.head, "div") - if (range.goalColumn != null) { headPos.left = range.goalColumn } - goals.push(headPos.left) - var pos = findPosV(this$1, headPos, dir, unit) - if (unit == "page" && range == doc.sel.primary()) - { addToScrollTop(this$1, charCoords(this$1, pos, "div").top - headPos.top) } - return pos - }, sel_move) - if (goals.length) { for (var i = 0; i < doc.sel.ranges.length; i++) - { doc.sel.ranges[i].goalColumn = goals[i] } } - }), - - // Find the word at the given position (as returned by coordsChar). - findWordAt: function(pos) { - var doc = this.doc, line = getLine(doc, pos.line).text - var start = pos.ch, end = pos.ch - if (line) { - var helper = this.getHelper(pos, "wordChars") - if ((pos.sticky == "before" || end == line.length) && start) { --start; } else { ++end } - var startChar = line.charAt(start) - var check = isWordChar(startChar, helper) - ? function (ch) { return isWordChar(ch, helper); } - : /\s/.test(startChar) ? function (ch) { return /\s/.test(ch); } - : function (ch) { return (!/\s/.test(ch) && !isWordChar(ch)); } - while (start > 0 && check(line.charAt(start - 1))) { --start } - while (end < line.length && check(line.charAt(end))) { ++end } - } - return new Range(Pos(pos.line, start), Pos(pos.line, end)) - }, - - toggleOverwrite: function(value) { - if (value != null && value == this.state.overwrite) { return } - if (this.state.overwrite = !this.state.overwrite) - { addClass(this.display.cursorDiv, "CodeMirror-overwrite") } + { rect = node.getBoundingClientRect(); } + } + if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) { + var rSpan = node.parentNode.getClientRects()[0]; + if (rSpan) + { rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom}; } else - { rmClass(this.display.cursorDiv, "CodeMirror-overwrite") } + { rect = nullRect; } + } - signal(this, "overwriteToggle", this, this.state.overwrite) - }, - hasFocus: function() { return this.display.input.getField() == activeElt() }, - isReadOnly: function() { return !!(this.options.readOnly || this.doc.cantEdit) }, + var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top; + var mid = (rtop + rbot) / 2; + var heights = prepared.view.measure.heights; + var i = 0; + for (; i < heights.length - 1; i++) + { if (mid < heights[i]) { break } } + var top = i ? heights[i - 1] : 0, bot = heights[i]; + var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left, + right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left, + top: top, bottom: bot}; + if (!rect.left && !rect.right) { result.bogus = true; } + if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; } - scrollTo: methodOp(function (x, y) { scrollToCoords(this, x, y) }), - getScrollInfo: function() { - var scroller = this.display.scroller - return {left: scroller.scrollLeft, top: scroller.scrollTop, - height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight, - width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth, - clientHeight: displayHeight(this), clientWidth: displayWidth(this)} - }, + return result + } - scrollIntoView: methodOp(function(range, margin) { - if (range == null) { - range = {from: this.doc.sel.primary().head, to: null} - if (margin == null) { margin = this.options.cursorScrollMargin } - } else if (typeof range == "number") { - range = {from: Pos(range, 0), to: null} - } else if (range.from == null) { - range = {from: range, to: null} + // Work around problem with bounding client rects on ranges being + // returned incorrectly when zoomed on IE10 and below. + function maybeUpdateRectForZooming(measure, rect) { + if (!window.screen || screen.logicalXDPI == null || + screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure)) + { return rect } + var scaleX = screen.logicalXDPI / screen.deviceXDPI; + var scaleY = screen.logicalYDPI / screen.deviceYDPI; + return {left: rect.left * scaleX, right: rect.right * scaleX, + top: rect.top * scaleY, bottom: rect.bottom * scaleY} + } + + function clearLineMeasurementCacheFor(lineView) { + if (lineView.measure) { + lineView.measure.cache = {}; + lineView.measure.heights = null; + if (lineView.rest) { for (var i = 0; i < lineView.rest.length; i++) + { lineView.measure.caches[i] = {}; } } + } + } + + function clearLineMeasurementCache(cm) { + cm.display.externalMeasure = null; + removeChildren(cm.display.lineMeasure); + for (var i = 0; i < cm.display.view.length; i++) + { clearLineMeasurementCacheFor(cm.display.view[i]); } + } + + function clearCaches(cm) { + clearLineMeasurementCache(cm); + cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null; + if (!cm.options.lineWrapping) { cm.display.maxLineChanged = true; } + cm.display.lineNumChars = null; + } + + function pageScrollX() { + // Work around https://bugs.chromium.org/p/chromium/issues/detail?id=489206 + // which causes page_Offset and bounding client rects to use + // different reference viewports and invalidate our calculations. + if (chrome && android) { return -(document.body.getBoundingClientRect().left - parseInt(getComputedStyle(document.body).marginLeft)) } + return window.pageXOffset || (document.documentElement || document.body).scrollLeft + } + function pageScrollY() { + if (chrome && android) { return -(document.body.getBoundingClientRect().top - parseInt(getComputedStyle(document.body).marginTop)) } + return window.pageYOffset || (document.documentElement || document.body).scrollTop + } + + function widgetTopHeight(lineObj) { + var height = 0; + if (lineObj.widgets) { for (var i = 0; i < lineObj.widgets.length; ++i) { if (lineObj.widgets[i].above) + { height += widgetHeight(lineObj.widgets[i]); } } } + return height + } + + // Converts a {top, bottom, left, right} box from line-local + // coordinates into another coordinate system. Context may be one of + // "line", "div" (display.lineDiv), "local"./null (editor), "window", + // or "page". + function intoCoordSystem(cm, lineObj, rect, context, includeWidgets) { + if (!includeWidgets) { + var height = widgetTopHeight(lineObj); + rect.top += height; rect.bottom += height; + } + if (context == "line") { return rect } + if (!context) { context = "local"; } + var yOff = heightAtLine(lineObj); + if (context == "local") { yOff += paddingTop(cm.display); } + else { yOff -= cm.display.viewOffset; } + if (context == "page" || context == "window") { + var lOff = cm.display.lineSpace.getBoundingClientRect(); + yOff += lOff.top + (context == "window" ? 0 : pageScrollY()); + var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()); + rect.left += xOff; rect.right += xOff; + } + rect.top += yOff; rect.bottom += yOff; + return rect + } + + // Coverts a box from "div" coords to another coordinate system. + // Context may be "window", "page", "div", or "local"./null. + function fromCoordSystem(cm, coords, context) { + if (context == "div") { return coords } + var left = coords.left, top = coords.top; + // First move into "page" coordinate system + if (context == "page") { + left -= pageScrollX(); + top -= pageScrollY(); + } else if (context == "local" || !context) { + var localBox = cm.display.sizer.getBoundingClientRect(); + left += localBox.left; + top += localBox.top; + } + + var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect(); + return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top} + } + + function charCoords(cm, pos, context, lineObj, bias) { + if (!lineObj) { lineObj = getLine(cm.doc, pos.line); } + return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context) + } + + // Returns a box for a given cursor position, which may have an + // 'other' property containing the position of the secondary cursor + // on a bidi boundary. + // A cursor Pos(line, char, "before") is on the same visual line as `char - 1` + // and after `char - 1` in writing order of `char - 1` + // A cursor Pos(line, char, "after") is on the same visual line as `char` + // and before `char` in writing order of `char` + // Examples (upper-case letters are RTL, lower-case are LTR): + // Pos(0, 1, ...) + // before after + // ab a|b a|b + // aB a|B aB| + // Ab |Ab A|b + // AB B|A B|A + // Every position after the last character on a line is considered to stick + // to the last character on the line. + function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) { + lineObj = lineObj || getLine(cm.doc, pos.line); + if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); } + function get(ch, right) { + var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight); + if (right) { m.left = m.right; } else { m.right = m.left; } + return intoCoordSystem(cm, lineObj, m, context) + } + var order = getOrder(lineObj, cm.doc.direction), ch = pos.ch, sticky = pos.sticky; + if (ch >= lineObj.text.length) { + ch = lineObj.text.length; + sticky = "before"; + } else if (ch <= 0) { + ch = 0; + sticky = "after"; + } + if (!order) { return get(sticky == "before" ? ch - 1 : ch, sticky == "before") } + + function getBidi(ch, partPos, invert) { + var part = order[partPos], right = part.level == 1; + return get(invert ? ch - 1 : ch, right != invert) + } + var partPos = getBidiPartAt(order, ch, sticky); + var other = bidiOther; + var val = getBidi(ch, partPos, sticky == "before"); + if (other != null) { val.other = getBidi(ch, other, sticky != "before"); } + return val + } + + // Used to cheaply estimate the coordinates for a position. Used for + // intermediate scroll updates. + function estimateCoords(cm, pos) { + var left = 0; + pos = clipPos(cm.doc, pos); + if (!cm.options.lineWrapping) { left = charWidth(cm.display) * pos.ch; } + var lineObj = getLine(cm.doc, pos.line); + var top = heightAtLine(lineObj) + paddingTop(cm.display); + return {left: left, right: left, top: top, bottom: top + lineObj.height} + } + + // Positions returned by coordsChar contain some extra information. + // xRel is the relative x position of the input coordinates compared + // to the found position (so xRel > 0 means the coordinates are to + // the right of the character position, for example). When outside + // is true, that means the coordinates lie outside the line's + // vertical range. + function PosWithInfo(line, ch, sticky, outside, xRel) { + var pos = Pos(line, ch, sticky); + pos.xRel = xRel; + if (outside) { pos.outside = true; } + return pos + } + + // Compute the character position closest to the given coordinates. + // Input must be lineSpace-local ("div" coordinate system). + function coordsChar(cm, x, y) { + var doc = cm.doc; + y += cm.display.viewOffset; + if (y < 0) { return PosWithInfo(doc.first, 0, null, true, -1) } + var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1; + if (lineN > last) + { return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, null, true, 1) } + if (x < 0) { x = 0; } + + var lineObj = getLine(doc, lineN); + for (;;) { + var found = coordsCharInner(cm, lineObj, lineN, x, y); + var collapsed = collapsedSpanAround(lineObj, found.ch + (found.xRel > 0 ? 1 : 0)); + if (!collapsed) { return found } + var rangeEnd = collapsed.find(1); + if (rangeEnd.line == lineN) { return rangeEnd } + lineObj = getLine(doc, lineN = rangeEnd.line); + } + } + + function wrappedLineExtent(cm, lineObj, preparedMeasure, y) { + y -= widgetTopHeight(lineObj); + var end = lineObj.text.length; + var begin = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch - 1).bottom <= y; }, end, 0); + end = findFirst(function (ch) { return measureCharPrepared(cm, preparedMeasure, ch).top > y; }, begin, end); + return {begin: begin, end: end} + } + + function wrappedLineExtentChar(cm, lineObj, preparedMeasure, target) { + if (!preparedMeasure) { preparedMeasure = prepareMeasureForLine(cm, lineObj); } + var targetTop = intoCoordSystem(cm, lineObj, measureCharPrepared(cm, preparedMeasure, target), "line").top; + return wrappedLineExtent(cm, lineObj, preparedMeasure, targetTop) + } + + // Returns true if the given side of a box is after the given + // coordinates, in top-to-bottom, left-to-right order. + function boxIsAfter(box, x, y, left) { + return box.bottom <= y ? false : box.top > y ? true : (left ? box.left : box.right) > x + } + + function coordsCharInner(cm, lineObj, lineNo$$1, x, y) { + // Move y into line-local coordinate space + y -= heightAtLine(lineObj); + var preparedMeasure = prepareMeasureForLine(cm, lineObj); + // When directly calling `measureCharPrepared`, we have to adjust + // for the widgets at this line. + var widgetHeight$$1 = widgetTopHeight(lineObj); + var begin = 0, end = lineObj.text.length, ltr = true; + + var order = getOrder(lineObj, cm.doc.direction); + // If the line isn't plain left-to-right text, first figure out + // which bidi section the coordinates fall into. + if (order) { + var part = (cm.options.lineWrapping ? coordsBidiPartWrapped : coordsBidiPart) + (cm, lineObj, lineNo$$1, preparedMeasure, order, x, y); + ltr = part.level != 1; + // The awkward -1 offsets are needed because findFirst (called + // on these below) will treat its first bound as inclusive, + // second as exclusive, but we want to actually address the + // characters in the part's range + begin = ltr ? part.from : part.to - 1; + end = ltr ? part.to : part.from - 1; + } + + // A binary search to find the first character whose bounding box + // starts after the coordinates. If we run across any whose box wrap + // the coordinates, store that. + var chAround = null, boxAround = null; + var ch = findFirst(function (ch) { + var box = measureCharPrepared(cm, preparedMeasure, ch); + box.top += widgetHeight$$1; box.bottom += widgetHeight$$1; + if (!boxIsAfter(box, x, y, false)) { return false } + if (box.top <= y && box.left <= x) { + chAround = ch; + boxAround = box; } - if (!range.to) { range.to = range.from } - range.margin = margin || 0 + return true + }, begin, end); - if (range.from.line != null) { - scrollToRange(this, range) + var baseX, sticky, outside = false; + // If a box around the coordinates was found, use that + if (boxAround) { + // Distinguish coordinates nearer to the left or right side of the box + var atLeft = x - boxAround.left < boxAround.right - x, atStart = atLeft == ltr; + ch = chAround + (atStart ? 0 : 1); + sticky = atStart ? "after" : "before"; + baseX = atLeft ? boxAround.left : boxAround.right; + } else { + // (Adjust for extended bound, if necessary.) + if (!ltr && (ch == end || ch == begin)) { ch++; } + // To determine which side to associate with, get the box to the + // left of the character and compare it's vertical position to the + // coordinates + sticky = ch == 0 ? "after" : ch == lineObj.text.length ? "before" : + (measureCharPrepared(cm, preparedMeasure, ch - (ltr ? 1 : 0)).bottom + widgetHeight$$1 <= y) == ltr ? + "after" : "before"; + // Now get accurate coordinates for this place, in order to get a + // base X position + var coords = cursorCoords(cm, Pos(lineNo$$1, ch, sticky), "line", lineObj, preparedMeasure); + baseX = coords.left; + outside = y < coords.top || y >= coords.bottom; + } + + ch = skipExtendingChars(lineObj.text, ch, 1); + return PosWithInfo(lineNo$$1, ch, sticky, outside, x - baseX) + } + + function coordsBidiPart(cm, lineObj, lineNo$$1, preparedMeasure, order, x, y) { + // Bidi parts are sorted left-to-right, and in a non-line-wrapping + // situation, we can take this ordering to correspond to the visual + // ordering. This finds the first part whose end is after the given + // coordinates. + var index = findFirst(function (i) { + var part = order[i], ltr = part.level != 1; + return boxIsAfter(cursorCoords(cm, Pos(lineNo$$1, ltr ? part.to : part.from, ltr ? "before" : "after"), + "line", lineObj, preparedMeasure), x, y, true) + }, 0, order.length - 1); + var part = order[index]; + // If this isn't the first part, the part's start is also after + // the coordinates, and the coordinates aren't on the same line as + // that start, move one part back. + if (index > 0) { + var ltr = part.level != 1; + var start = cursorCoords(cm, Pos(lineNo$$1, ltr ? part.from : part.to, ltr ? "after" : "before"), + "line", lineObj, preparedMeasure); + if (boxIsAfter(start, x, y, true) && start.top > y) + { part = order[index - 1]; } + } + return part + } + + function coordsBidiPartWrapped(cm, lineObj, _lineNo, preparedMeasure, order, x, y) { + // In a wrapped line, rtl text on wrapping boundaries can do things + // that don't correspond to the ordering in our `order` array at + // all, so a binary search doesn't work, and we want to return a + // part that only spans one line so that the binary search in + // coordsCharInner is safe. As such, we first find the extent of the + // wrapped line, and then do a flat search in which we discard any + // spans that aren't on the line. + var ref = wrappedLineExtent(cm, lineObj, preparedMeasure, y); + var begin = ref.begin; + var end = ref.end; + if (/\s/.test(lineObj.text.charAt(end - 1))) { end--; } + var part = null, closestDist = null; + for (var i = 0; i < order.length; i++) { + var p = order[i]; + if (p.from >= end || p.to <= begin) { continue } + var ltr = p.level != 1; + var endX = measureCharPrepared(cm, preparedMeasure, ltr ? Math.min(end, p.to) - 1 : Math.max(begin, p.from)).right; + // Weigh against spans ending before this, so that they are only + // picked if nothing ends after + var dist = endX < x ? x - endX + 1e9 : endX - x; + if (!part || closestDist > dist) { + part = p; + closestDist = dist; + } + } + if (!part) { part = order[order.length - 1]; } + // Clip the part to the wrapped line. + if (part.from < begin) { part = {from: begin, to: part.to, level: part.level}; } + if (part.to > end) { part = {from: part.from, to: end, level: part.level}; } + return part + } + + var measureText; + // Compute the default text height. + function textHeight(display) { + if (display.cachedTextHeight != null) { return display.cachedTextHeight } + if (measureText == null) { + measureText = elt("pre"); + // Measure a bunch of lines, for browsers that compute + // fractional heights. + for (var i = 0; i < 49; ++i) { + measureText.appendChild(document.createTextNode("x")); + measureText.appendChild(elt("br")); + } + measureText.appendChild(document.createTextNode("x")); + } + removeChildrenAndAdd(display.measure, measureText); + var height = measureText.offsetHeight / 50; + if (height > 3) { display.cachedTextHeight = height; } + removeChildren(display.measure); + return height || 1 + } + + // Compute the default character width. + function charWidth(display) { + if (display.cachedCharWidth != null) { return display.cachedCharWidth } + var anchor = elt("span", "xxxxxxxxxx"); + var pre = elt("pre", [anchor]); + removeChildrenAndAdd(display.measure, pre); + var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10; + if (width > 2) { display.cachedCharWidth = width; } + return width || 10 + } + + // Do a bulk-read of the DOM positions and sizes needed to draw the + // view, so that we don't interleave reading and writing to the DOM. + function getDimensions(cm) { + var d = cm.display, left = {}, width = {}; + var gutterLeft = d.gutters.clientLeft; + for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { + left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft; + width[cm.options.gutters[i]] = n.clientWidth; + } + return {fixedPos: compensateForHScroll(d), + gutterTotalWidth: d.gutters.offsetWidth, + gutterLeft: left, + gutterWidth: width, + wrapperWidth: d.wrapper.clientWidth} + } + + // Computes display.scroller.scrollLeft + display.gutters.offsetWidth, + // but using getBoundingClientRect to get a sub-pixel-accurate + // result. + function compensateForHScroll(display) { + return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left + } + + // Returns a function that estimates the height of a line, to use as + // first approximation until the line becomes visible (and is thus + // properly measurable). + function estimateHeight(cm) { + var th = textHeight(cm.display), wrapping = cm.options.lineWrapping; + var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3); + return function (line) { + if (lineIsHidden(cm.doc, line)) { return 0 } + + var widgetsHeight = 0; + if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) { + if (line.widgets[i].height) { widgetsHeight += line.widgets[i].height; } + } } + + if (wrapping) + { return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th } + else + { return widgetsHeight + th } + } + } + + function estimateLineHeights(cm) { + var doc = cm.doc, est = estimateHeight(cm); + doc.iter(function (line) { + var estHeight = est(line); + if (estHeight != line.height) { updateLineHeight(line, estHeight); } + }); + } + + // Given a mouse event, find the corresponding position. If liberal + // is false, it checks whether a gutter or scrollbar was clicked, + // and returns null if it was. forRect is used by rectangular + // selections, and tries to estimate a character position even for + // coordinates beyond the right of the text. + function posFromMouse(cm, e, liberal, forRect) { + var display = cm.display; + if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") { return null } + + var x, y, space = display.lineSpace.getBoundingClientRect(); + // Fails unpredictably on IE[67] when mouse is dragged around quickly. + try { x = e.clientX - space.left; y = e.clientY - space.top; } + catch (e) { return null } + var coords = coordsChar(cm, x, y), line; + if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) { + var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length; + coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff)); + } + return coords + } + + // Find the view element corresponding to a given line. Return null + // when the line isn't visible. + function findViewIndex(cm, n) { + if (n >= cm.display.viewTo) { return null } + n -= cm.display.viewFrom; + if (n < 0) { return null } + var view = cm.display.view; + for (var i = 0; i < view.length; i++) { + n -= view[i].size; + if (n < 0) { return i } + } + } + + function updateSelection(cm) { + cm.display.input.showSelection(cm.display.input.prepareSelection()); + } + + function prepareSelection(cm, primary) { + if ( primary === void 0 ) primary = true; + + var doc = cm.doc, result = {}; + var curFragment = result.cursors = document.createDocumentFragment(); + var selFragment = result.selection = document.createDocumentFragment(); + + for (var i = 0; i < doc.sel.ranges.length; i++) { + if (!primary && i == doc.sel.primIndex) { continue } + var range$$1 = doc.sel.ranges[i]; + if (range$$1.from().line >= cm.display.viewTo || range$$1.to().line < cm.display.viewFrom) { continue } + var collapsed = range$$1.empty(); + if (collapsed || cm.options.showCursorWhenSelecting) + { drawSelectionCursor(cm, range$$1.head, curFragment); } + if (!collapsed) + { drawSelectionRange(cm, range$$1, selFragment); } + } + return result + } + + // Draws a cursor for the given range + function drawSelectionCursor(cm, head, output) { + var pos = cursorCoords(cm, head, "div", null, null, !cm.options.singleCursorHeightPerLine); + + var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor")); + cursor.style.left = pos.left + "px"; + cursor.style.top = pos.top + "px"; + cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"; + + if (pos.other) { + // Secondary cursor, shown when on a 'jump' in bi-directional text + var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor")); + otherCursor.style.display = ""; + otherCursor.style.left = pos.other.left + "px"; + otherCursor.style.top = pos.other.top + "px"; + otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"; + } + } + + function cmpCoords(a, b) { return a.top - b.top || a.left - b.left } + + // Draws the given range as a highlighted selection + function drawSelectionRange(cm, range$$1, output) { + var display = cm.display, doc = cm.doc; + var fragment = document.createDocumentFragment(); + var padding = paddingH(cm.display), leftSide = padding.left; + var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right; + var docLTR = doc.direction == "ltr"; + + function add(left, top, width, bottom) { + if (top < 0) { top = 0; } + top = Math.round(top); + bottom = Math.round(bottom); + fragment.appendChild(elt("div", null, "CodeMirror-selected", ("position: absolute; left: " + left + "px;\n top: " + top + "px; width: " + (width == null ? rightSide - left : width) + "px;\n height: " + (bottom - top) + "px"))); + } + + function drawForLine(line, fromArg, toArg) { + var lineObj = getLine(doc, line); + var lineLen = lineObj.text.length; + var start, end; + function coords(ch, bias) { + return charCoords(cm, Pos(line, ch), "div", lineObj, bias) + } + + function wrapX(pos, dir, side) { + var extent = wrappedLineExtentChar(cm, lineObj, null, pos); + var prop = (dir == "ltr") == (side == "after") ? "left" : "right"; + var ch = side == "after" ? extent.begin : extent.end - (/\s/.test(lineObj.text.charAt(extent.end - 1)) ? 2 : 1); + return coords(ch, prop)[prop] + } + + var order = getOrder(lineObj, doc.direction); + iterateBidiSections(order, fromArg || 0, toArg == null ? lineLen : toArg, function (from, to, dir, i) { + var ltr = dir == "ltr"; + var fromPos = coords(from, ltr ? "left" : "right"); + var toPos = coords(to - 1, ltr ? "right" : "left"); + + var openStart = fromArg == null && from == 0, openEnd = toArg == null && to == lineLen; + var first = i == 0, last = !order || i == order.length - 1; + if (toPos.top - fromPos.top <= 3) { // Single line + var openLeft = (docLTR ? openStart : openEnd) && first; + var openRight = (docLTR ? openEnd : openStart) && last; + var left = openLeft ? leftSide : (ltr ? fromPos : toPos).left; + var right = openRight ? rightSide : (ltr ? toPos : fromPos).right; + add(left, fromPos.top, right - left, fromPos.bottom); + } else { // Multiple lines + var topLeft, topRight, botLeft, botRight; + if (ltr) { + topLeft = docLTR && openStart && first ? leftSide : fromPos.left; + topRight = docLTR ? rightSide : wrapX(from, dir, "before"); + botLeft = docLTR ? leftSide : wrapX(to, dir, "after"); + botRight = docLTR && openEnd && last ? rightSide : toPos.right; + } else { + topLeft = !docLTR ? leftSide : wrapX(from, dir, "before"); + topRight = !docLTR && openStart && first ? rightSide : fromPos.right; + botLeft = !docLTR && openEnd && last ? leftSide : toPos.left; + botRight = !docLTR ? rightSide : wrapX(to, dir, "after"); + } + add(topLeft, fromPos.top, topRight - topLeft, fromPos.bottom); + if (fromPos.bottom < toPos.top) { add(leftSide, fromPos.bottom, null, toPos.top); } + add(botLeft, toPos.top, botRight - botLeft, toPos.bottom); + } + + if (!start || cmpCoords(fromPos, start) < 0) { start = fromPos; } + if (cmpCoords(toPos, start) < 0) { start = toPos; } + if (!end || cmpCoords(fromPos, end) < 0) { end = fromPos; } + if (cmpCoords(toPos, end) < 0) { end = toPos; } + }); + return {start: start, end: end} + } + + var sFrom = range$$1.from(), sTo = range$$1.to(); + if (sFrom.line == sTo.line) { + drawForLine(sFrom.line, sFrom.ch, sTo.ch); + } else { + var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line); + var singleVLine = visualLine(fromLine) == visualLine(toLine); + var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end; + var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start; + if (singleVLine) { + if (leftEnd.top < rightStart.top - 2) { + add(leftEnd.right, leftEnd.top, null, leftEnd.bottom); + add(leftSide, rightStart.top, rightStart.left, rightStart.bottom); + } else { + add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom); + } + } + if (leftEnd.bottom < rightStart.top) + { add(leftSide, leftEnd.bottom, null, rightStart.top); } + } + + output.appendChild(fragment); + } + + // Cursor-blinking + function restartBlink(cm) { + if (!cm.state.focused) { return } + var display = cm.display; + clearInterval(display.blinker); + var on = true; + display.cursorDiv.style.visibility = ""; + if (cm.options.cursorBlinkRate > 0) + { display.blinker = setInterval(function () { return display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"; }, + cm.options.cursorBlinkRate); } + else if (cm.options.cursorBlinkRate < 0) + { display.cursorDiv.style.visibility = "hidden"; } + } + + function ensureFocus(cm) { + if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm); } + } + + function delayBlurEvent(cm) { + cm.state.delayingBlurEvent = true; + setTimeout(function () { if (cm.state.delayingBlurEvent) { + cm.state.delayingBlurEvent = false; + onBlur(cm); + } }, 100); + } + + function onFocus(cm, e) { + if (cm.state.delayingBlurEvent) { cm.state.delayingBlurEvent = false; } + + if (cm.options.readOnly == "nocursor") { return } + if (!cm.state.focused) { + signal(cm, "focus", cm, e); + cm.state.focused = true; + addClass(cm.display.wrapper, "CodeMirror-focused"); + // This test prevents this from firing when a context + // menu is closed (since the input reset would kill the + // select-all detection hack) + if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) { + cm.display.input.reset(); + if (webkit) { setTimeout(function () { return cm.display.input.reset(true); }, 20); } // Issue #1730 + } + cm.display.input.receivedFocus(); + } + restartBlink(cm); + } + function onBlur(cm, e) { + if (cm.state.delayingBlurEvent) { return } + + if (cm.state.focused) { + signal(cm, "blur", cm, e); + cm.state.focused = false; + rmClass(cm.display.wrapper, "CodeMirror-focused"); + } + clearInterval(cm.display.blinker); + setTimeout(function () { if (!cm.state.focused) { cm.display.shift = false; } }, 150); + } + + // Read the actual heights of the rendered lines, and update their + // stored heights to match. + function updateHeightsInViewport(cm) { + var display = cm.display; + var prevBottom = display.lineDiv.offsetTop; + for (var i = 0; i < display.view.length; i++) { + var cur = display.view[i], wrapping = cm.options.lineWrapping; + var height = (void 0), width = 0; + if (cur.hidden) { continue } + if (ie && ie_version < 8) { + var bot = cur.node.offsetTop + cur.node.offsetHeight; + height = bot - prevBottom; + prevBottom = bot; } else { - scrollToCoordsRange(this, range.from, range.to, range.margin) + var box = cur.node.getBoundingClientRect(); + height = box.bottom - box.top; + // Check that lines don't extend past the right of the current + // editor width + if (!wrapping && cur.text.firstChild) + { width = cur.text.firstChild.getBoundingClientRect().right - box.left - 1; } } - }), - - setSize: methodOp(function(width, height) { - var this$1 = this; - - var interpret = function (val) { return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; } - if (width != null) { this.display.wrapper.style.width = interpret(width) } - if (height != null) { this.display.wrapper.style.height = interpret(height) } - if (this.options.lineWrapping) { clearLineMeasurementCache(this) } - var lineNo = this.display.viewFrom - this.doc.iter(lineNo, this.display.viewTo, function (line) { - if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) - { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo, "widget"); break } } } - ++lineNo - }) - this.curOp.forceUpdate = true - signal(this, "refresh", this) - }), - - operation: function(f){return runInOp(this, f)}, - startOperation: function(){return startOperation(this)}, - endOperation: function(){return endOperation(this)}, - - refresh: methodOp(function() { - var oldHeight = this.display.cachedTextHeight - regChange(this) - this.curOp.forceUpdate = true - clearCaches(this) - scrollToCoords(this, this.doc.scrollLeft, this.doc.scrollTop) - updateGutterSpace(this) - if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5) - { estimateLineHeights(this) } - signal(this, "refresh", this) - }), - - swapDoc: methodOp(function(doc) { - var old = this.doc - old.cm = null - attachDoc(this, doc) - clearCaches(this) - this.display.input.reset() - scrollToCoords(this, doc.scrollLeft, doc.scrollTop) - this.curOp.forceScroll = true - signalLater(this, "swapDoc", this, old) - return old - }), - - phrase: function(phraseText) { - var phrases = this.options.phrases - return phrases && Object.prototype.hasOwnProperty.call(phrases, phraseText) ? phrases[phraseText] : phraseText - }, - - getInputField: function(){return this.display.input.getField()}, - getWrapperElement: function(){return this.display.wrapper}, - getScrollerElement: function(){return this.display.scroller}, - getGutterElement: function(){return this.display.gutters} - } - eventMixin(CodeMirror) - - CodeMirror.registerHelper = function(type, name, value) { - if (!helpers.hasOwnProperty(type)) { helpers[type] = CodeMirror[type] = {_global: []} } - helpers[type][name] = value - } - CodeMirror.registerGlobalHelper = function(type, name, predicate, value) { - CodeMirror.registerHelper(type, name, value) - helpers[type]._global.push({pred: predicate, val: value}) - } -} - -// Used for horizontal relative motion. Dir is -1 or 1 (left or -// right), unit can be "char", "column" (like char, but doesn't -// cross line boundaries), "word" (across next word), or "group" (to -// the start of next group of word or non-word-non-whitespace -// chars). The visually param controls whether, in right-to-left -// text, direction 1 means to move towards the next index in the -// string, or towards the character to the right of the current -// position. The resulting position will have a hitSide=true -// property if it reached the end of the document. -function findPosH(doc, pos, dir, unit, visually) { - var oldPos = pos - var origDir = dir - var lineObj = getLine(doc, pos.line) - function findNextLine() { - var l = pos.line + dir - if (l < doc.first || l >= doc.first + doc.size) { return false } - pos = new Pos(l, pos.ch, pos.sticky) - return lineObj = getLine(doc, l) - } - function moveOnce(boundToLine) { - var next - if (visually) { - next = moveVisually(doc.cm, lineObj, pos, dir) - } else { - next = moveLogically(lineObj, pos, dir) - } - if (next == null) { - if (!boundToLine && findNextLine()) - { pos = endOfLine(visually, doc.cm, lineObj, pos.line, dir) } - else - { return false } - } else { - pos = next - } - return true - } - - if (unit == "char") { - moveOnce() - } else if (unit == "column") { - moveOnce(true) - } else if (unit == "word" || unit == "group") { - var sawType = null, group = unit == "group" - var helper = doc.cm && doc.cm.getHelper(pos, "wordChars") - for (var first = true;; first = false) { - if (dir < 0 && !moveOnce(!first)) { break } - var cur = lineObj.text.charAt(pos.ch) || "\n" - var type = isWordChar(cur, helper) ? "w" - : group && cur == "\n" ? "n" - : !group || /\s/.test(cur) ? null - : "p" - if (group && !first && !type) { type = "s" } - if (sawType && sawType != type) { - if (dir < 0) {dir = 1; moveOnce(); pos.sticky = "after"} - break + var diff = cur.line.height - height; + if (diff > .005 || diff < -.005) { + updateLineHeight(cur.line, height); + updateWidgetHeight(cur.line); + if (cur.rest) { for (var j = 0; j < cur.rest.length; j++) + { updateWidgetHeight(cur.rest[j]); } } } - - if (type) { sawType = type } - if (dir > 0 && !moveOnce(!first)) { break } - } - } - var result = skipAtomic(doc, pos, oldPos, origDir, true) - if (equalCursorPos(oldPos, result)) { result.hitSide = true } - return result -} - -// For relative vertical movement. Dir may be -1 or 1. Unit can be -// "page" or "line". The resulting position will have a hitSide=true -// property if it reached the end of the document. -function findPosV(cm, pos, dir, unit) { - var doc = cm.doc, x = pos.left, y - if (unit == "page") { - var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight) - var moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3) - y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount - - } else if (unit == "line") { - y = dir > 0 ? pos.bottom + 3 : pos.top - 3 - } - var target - for (;;) { - target = coordsChar(cm, x, y) - if (!target.outside) { break } - if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break } - y += dir * 5 - } - return target -} - -// CONTENTEDITABLE INPUT STYLE - -var ContentEditableInput = function(cm) { - this.cm = cm - this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null - this.polling = new Delayed() - this.composing = null - this.gracePeriod = false - this.readDOMTimeout = null -}; - -ContentEditableInput.prototype.init = function (display) { - var this$1 = this; - - var input = this, cm = input.cm - var div = input.div = display.lineDiv - disableBrowserMagic(div, cm.options.spellcheck) - - on(div, "paste", function (e) { - if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return } - // IE doesn't fire input events, so we schedule a read for the pasted content in this way - if (ie_version <= 11) { setTimeout(operation(cm, function () { return this$1.updateFromDOM(); }), 20) } - }) - - on(div, "compositionstart", function (e) { - this$1.composing = {data: e.data, done: false} - }) - on(div, "compositionupdate", function (e) { - if (!this$1.composing) { this$1.composing = {data: e.data, done: false} } - }) - on(div, "compositionend", function (e) { - if (this$1.composing) { - if (e.data != this$1.composing.data) { this$1.readFromDOMSoon() } - this$1.composing.done = true - } - }) - - on(div, "touchstart", function () { return input.forceCompositionEnd(); }) - - on(div, "input", function () { - if (!this$1.composing) { this$1.readFromDOMSoon() } - }) - - function onCopyCut(e) { - if (signalDOMEvent(cm, e)) { return } - if (cm.somethingSelected()) { - setLastCopied({lineWise: false, text: cm.getSelections()}) - if (e.type == "cut") { cm.replaceSelection("", null, "cut") } - } else if (!cm.options.lineWiseCopyCut) { - return - } else { - var ranges = copyableRanges(cm) - setLastCopied({lineWise: true, text: ranges.text}) - if (e.type == "cut") { - cm.operation(function () { - cm.setSelections(ranges.ranges, 0, sel_dontScroll) - cm.replaceSelection("", null, "cut") - }) - } - } - if (e.clipboardData) { - e.clipboardData.clearData() - var content = lastCopied.text.join("\n") - // iOS exposes the clipboard API, but seems to discard content inserted into it - e.clipboardData.setData("Text", content) - if (e.clipboardData.getData("Text") == content) { - e.preventDefault() - return - } - } - // Old-fashioned briefly-focus-a-textarea hack - var kludge = hiddenTextarea(), te = kludge.firstChild - cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild) - te.value = lastCopied.text.join("\n") - var hadFocus = document.activeElement - selectInput(te) - setTimeout(function () { - cm.display.lineSpace.removeChild(kludge) - hadFocus.focus() - if (hadFocus == div) { input.showPrimarySelection() } - }, 50) - } - on(div, "copy", onCopyCut) - on(div, "cut", onCopyCut) -}; - -ContentEditableInput.prototype.prepareSelection = function () { - var result = prepareSelection(this.cm, false) - result.focus = this.cm.state.focused - return result -}; - -ContentEditableInput.prototype.showSelection = function (info, takeFocus) { - if (!info || !this.cm.display.view.length) { return } - if (info.focus || takeFocus) { this.showPrimarySelection() } - this.showMultipleSelections(info) -}; - -ContentEditableInput.prototype.getSelection = function () { - return this.cm.display.wrapper.ownerDocument.getSelection() -}; - -ContentEditableInput.prototype.showPrimarySelection = function () { - var sel = this.getSelection(), cm = this.cm, prim = cm.doc.sel.primary() - var from = prim.from(), to = prim.to() - - if (cm.display.viewTo == cm.display.viewFrom || from.line >= cm.display.viewTo || to.line < cm.display.viewFrom) { - sel.removeAllRanges() - return - } - - var curAnchor = domToPos(cm, sel.anchorNode, sel.anchorOffset) - var curFocus = domToPos(cm, sel.focusNode, sel.focusOffset) - if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad && - cmp(minPos(curAnchor, curFocus), from) == 0 && - cmp(maxPos(curAnchor, curFocus), to) == 0) - { return } - - var view = cm.display.view - var start = (from.line >= cm.display.viewFrom && posToDOM(cm, from)) || - {node: view[0].measure.map[2], offset: 0} - var end = to.line < cm.display.viewTo && posToDOM(cm, to) - if (!end) { - var measure = view[view.length - 1].measure - var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map - end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]} - } - - if (!start || !end) { - sel.removeAllRanges() - return - } - - var old = sel.rangeCount && sel.getRangeAt(0), rng - try { rng = range(start.node, start.offset, end.offset, end.node) } - catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible - if (rng) { - if (!gecko && cm.state.focused) { - sel.collapse(start.node, start.offset) - if (!rng.collapsed) { - sel.removeAllRanges() - sel.addRange(rng) - } - } else { - sel.removeAllRanges() - sel.addRange(rng) - } - if (old && sel.anchorNode == null) { sel.addRange(old) } - else if (gecko) { this.startGracePeriod() } - } - this.rememberSelection() -}; - -ContentEditableInput.prototype.startGracePeriod = function () { - var this$1 = this; - - clearTimeout(this.gracePeriod) - this.gracePeriod = setTimeout(function () { - this$1.gracePeriod = false - if (this$1.selectionChanged()) - { this$1.cm.operation(function () { return this$1.cm.curOp.selectionChanged = true; }) } - }, 20) -}; - -ContentEditableInput.prototype.showMultipleSelections = function (info) { - removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors) - removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection) -}; - -ContentEditableInput.prototype.rememberSelection = function () { - var sel = this.getSelection() - this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset - this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset -}; - -ContentEditableInput.prototype.selectionInEditor = function () { - var sel = this.getSelection() - if (!sel.rangeCount) { return false } - var node = sel.getRangeAt(0).commonAncestorContainer - return contains(this.div, node) -}; - -ContentEditableInput.prototype.focus = function () { - if (this.cm.options.readOnly != "nocursor") { - if (!this.selectionInEditor()) - { this.showSelection(this.prepareSelection(), true) } - this.div.focus() - } -}; -ContentEditableInput.prototype.blur = function () { this.div.blur() }; -ContentEditableInput.prototype.getField = function () { return this.div }; - -ContentEditableInput.prototype.supportsTouch = function () { return true }; - -ContentEditableInput.prototype.receivedFocus = function () { - var input = this - if (this.selectionInEditor()) - { this.pollSelection() } - else - { runInOp(this.cm, function () { return input.cm.curOp.selectionChanged = true; }) } - - function poll() { - if (input.cm.state.focused) { - input.pollSelection() - input.polling.set(input.cm.options.pollInterval, poll) - } - } - this.polling.set(this.cm.options.pollInterval, poll) -}; - -ContentEditableInput.prototype.selectionChanged = function () { - var sel = this.getSelection() - return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset || - sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset -}; - -ContentEditableInput.prototype.pollSelection = function () { - if (this.readDOMTimeout != null || this.gracePeriod || !this.selectionChanged()) { return } - var sel = this.getSelection(), cm = this.cm - // On Android Chrome (version 56, at least), backspacing into an - // uneditable block element will put the cursor in that element, - // and then, because it's not editable, hide the virtual keyboard. - // Because Android doesn't allow us to actually detect backspace - // presses in a sane way, this code checks for when that happens - // and simulates a backspace press in this case. - if (android && chrome && this.cm.options.gutters.length && isInGutter(sel.anchorNode)) { - this.cm.triggerOnKeyDown({type: "keydown", keyCode: 8, preventDefault: Math.abs}) - this.blur() - this.focus() - return - } - if (this.composing) { return } - this.rememberSelection() - var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset) - var head = domToPos(cm, sel.focusNode, sel.focusOffset) - if (anchor && head) { runInOp(cm, function () { - setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll) - if (anchor.bad || head.bad) { cm.curOp.selectionChanged = true } - }) } -}; - -ContentEditableInput.prototype.pollContent = function () { - if (this.readDOMTimeout != null) { - clearTimeout(this.readDOMTimeout) - this.readDOMTimeout = null - } - - var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary() - var from = sel.from(), to = sel.to() - if (from.ch == 0 && from.line > cm.firstLine()) - { from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length) } - if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine()) - { to = Pos(to.line + 1, 0) } - if (from.line < display.viewFrom || to.line > display.viewTo - 1) { return false } - - var fromIndex, fromLine, fromNode - if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) { - fromLine = lineNo(display.view[0].line) - fromNode = display.view[0].node - } else { - fromLine = lineNo(display.view[fromIndex].line) - fromNode = display.view[fromIndex - 1].node.nextSibling - } - var toIndex = findViewIndex(cm, to.line) - var toLine, toNode - if (toIndex == display.view.length - 1) { - toLine = display.viewTo - 1 - toNode = display.lineDiv.lastChild - } else { - toLine = lineNo(display.view[toIndex + 1].line) - 1 - toNode = display.view[toIndex + 1].node.previousSibling - } - - if (!fromNode) { return false } - var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine)) - var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length)) - while (newText.length > 1 && oldText.length > 1) { - if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine-- } - else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++ } - else { break } - } - - var cutFront = 0, cutEnd = 0 - var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length) - while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront)) - { ++cutFront } - var newBot = lst(newText), oldBot = lst(oldText) - var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0), - oldBot.length - (oldText.length == 1 ? cutFront : 0)) - while (cutEnd < maxCutEnd && - newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) - { ++cutEnd } - // Try to move start of change to start of selection if ambiguous - if (newText.length == 1 && oldText.length == 1 && fromLine == from.line) { - while (cutFront && cutFront > from.ch && - newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) { - cutFront-- - cutEnd++ - } - } - - newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\u200b+/, "") - newText[0] = newText[0].slice(cutFront).replace(/\u200b+$/, "") - - var chFrom = Pos(fromLine, cutFront) - var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0) - if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) { - replaceRange(cm.doc, newText, chFrom, chTo, "+input") - return true - } -}; - -ContentEditableInput.prototype.ensurePolled = function () { - this.forceCompositionEnd() -}; -ContentEditableInput.prototype.reset = function () { - this.forceCompositionEnd() -}; -ContentEditableInput.prototype.forceCompositionEnd = function () { - if (!this.composing) { return } - clearTimeout(this.readDOMTimeout) - this.composing = null - this.updateFromDOM() - this.div.blur() - this.div.focus() -}; -ContentEditableInput.prototype.readFromDOMSoon = function () { - var this$1 = this; - - if (this.readDOMTimeout != null) { return } - this.readDOMTimeout = setTimeout(function () { - this$1.readDOMTimeout = null - if (this$1.composing) { - if (this$1.composing.done) { this$1.composing = null } - else { return } - } - this$1.updateFromDOM() - }, 80) -}; - -ContentEditableInput.prototype.updateFromDOM = function () { - var this$1 = this; - - if (this.cm.isReadOnly() || !this.pollContent()) - { runInOp(this.cm, function () { return regChange(this$1.cm); }) } -}; - -ContentEditableInput.prototype.setUneditable = function (node) { - node.contentEditable = "false" -}; - -ContentEditableInput.prototype.onKeyPress = function (e) { - if (e.charCode == 0 || this.composing) { return } - e.preventDefault() - if (!this.cm.isReadOnly()) - { operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0) } -}; - -ContentEditableInput.prototype.readOnlyChanged = function (val) { - this.div.contentEditable = String(val != "nocursor") -}; - -ContentEditableInput.prototype.onContextMenu = function () {}; -ContentEditableInput.prototype.resetPosition = function () {}; - -ContentEditableInput.prototype.needsContentAttribute = true - -function posToDOM(cm, pos) { - var view = findViewForLine(cm, pos.line) - if (!view || view.hidden) { return null } - var line = getLine(cm.doc, pos.line) - var info = mapFromLineView(view, line, pos.line) - - var order = getOrder(line, cm.doc.direction), side = "left" - if (order) { - var partPos = getBidiPartAt(order, pos.ch) - side = partPos % 2 ? "right" : "left" - } - var result = nodeAndOffsetInLineMap(info.map, pos.ch, side) - result.offset = result.collapse == "right" ? result.end : result.start - return result -} - -function isInGutter(node) { - for (var scan = node; scan; scan = scan.parentNode) - { if (/CodeMirror-gutter-wrapper/.test(scan.className)) { return true } } - return false -} - -function badPos(pos, bad) { if (bad) { pos.bad = true; } return pos } - -function domTextBetween(cm, from, to, fromLine, toLine) { - var text = "", closing = false, lineSep = cm.doc.lineSeparator(), extraLinebreak = false - function recognizeMarker(id) { return function (marker) { return marker.id == id; } } - function close() { - if (closing) { - text += lineSep - if (extraLinebreak) { text += lineSep } - closing = extraLinebreak = false - } - } - function addText(str) { - if (str) { - close() - text += str - } - } - function walk(node) { - if (node.nodeType == 1) { - var cmText = node.getAttribute("cm-text") - if (cmText) { - addText(cmText) - return - } - var markerID = node.getAttribute("cm-marker"), range - if (markerID) { - var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID)) - if (found.length && (range = found[0].find(0))) - { addText(getBetween(cm.doc, range.from, range.to).join(lineSep)) } - return - } - if (node.getAttribute("contenteditable") == "false") { return } - var isBlock = /^(pre|div|p|li|table|br)$/i.test(node.nodeName) - if (!/^br$/i.test(node.nodeName) && node.textContent.length == 0) { return } - - if (isBlock) { close() } - for (var i = 0; i < node.childNodes.length; i++) - { walk(node.childNodes[i]) } - - if (/^(pre|p)$/i.test(node.nodeName)) { extraLinebreak = true } - if (isBlock) { closing = true } - } else if (node.nodeType == 3) { - addText(node.nodeValue.replace(/\u200b/g, "").replace(/\u00a0/g, " ")) - } - } - for (;;) { - walk(from) - if (from == to) { break } - from = from.nextSibling - extraLinebreak = false - } - return text -} - -function domToPos(cm, node, offset) { - var lineNode - if (node == cm.display.lineDiv) { - lineNode = cm.display.lineDiv.childNodes[offset] - if (!lineNode) { return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true) } - node = null; offset = 0 - } else { - for (lineNode = node;; lineNode = lineNode.parentNode) { - if (!lineNode || lineNode == cm.display.lineDiv) { return null } - if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) { break } - } - } - for (var i = 0; i < cm.display.view.length; i++) { - var lineView = cm.display.view[i] - if (lineView.node == lineNode) - { return locateNodeInLineView(lineView, node, offset) } - } -} - -function locateNodeInLineView(lineView, node, offset) { - var wrapper = lineView.text.firstChild, bad = false - if (!node || !contains(wrapper, node)) { return badPos(Pos(lineNo(lineView.line), 0), true) } - if (node == wrapper) { - bad = true - node = wrapper.childNodes[offset] - offset = 0 - if (!node) { - var line = lineView.rest ? lst(lineView.rest) : lineView.line - return badPos(Pos(lineNo(line), line.text.length), bad) - } - } - - var textNode = node.nodeType == 3 ? node : null, topNode = node - if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) { - textNode = node.firstChild - if (offset) { offset = textNode.nodeValue.length } - } - while (topNode.parentNode != wrapper) { topNode = topNode.parentNode } - var measure = lineView.measure, maps = measure.maps - - function find(textNode, topNode, offset) { - for (var i = -1; i < (maps ? maps.length : 0); i++) { - var map = i < 0 ? measure.map : maps[i] - for (var j = 0; j < map.length; j += 3) { - var curNode = map[j + 2] - if (curNode == textNode || curNode == topNode) { - var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]) - var ch = map[j] + offset - if (offset < 0 || curNode != textNode) { ch = map[j + (offset ? 1 : 0)] } - return Pos(line, ch) + if (width > cm.display.sizerWidth) { + var chWidth = Math.ceil(width / charWidth(cm.display)); + if (chWidth > cm.display.maxLineLength) { + cm.display.maxLineLength = chWidth; + cm.display.maxLine = cur.line; + cm.display.maxLineChanged = true; } } } } - var found = find(textNode, topNode, offset) - if (found) { return badPos(found, bad) } - // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems - for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) { - found = find(after, after.firstChild, 0) - if (found) - { return badPos(Pos(found.line, found.ch - dist), bad) } - else - { dist += after.textContent.length } + // Read and store the height of line widgets associated with the + // given line. + function updateWidgetHeight(line) { + if (line.widgets) { for (var i = 0; i < line.widgets.length; ++i) { + var w = line.widgets[i], parent = w.node.parentNode; + if (parent) { w.height = parent.offsetHeight; } + } } } - for (var before = topNode.previousSibling, dist$1 = offset; before; before = before.previousSibling) { - found = find(before, before.firstChild, -1) - if (found) - { return badPos(Pos(found.line, found.ch + dist$1), bad) } - else - { dist$1 += before.textContent.length } - } -} -// TEXTAREA INPUT STYLE + // Compute the lines that are visible in a given viewport (defaults + // the the current scroll position). viewport may contain top, + // height, and ensure (see op.scrollToPos) properties. + function visibleLines(display, doc, viewport) { + var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop; + top = Math.floor(top - paddingTop(display)); + var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight; -var TextareaInput = function(cm) { - this.cm = cm - // See input.poll and input.reset - this.prevInput = "" - - // Flag that indicates whether we expect input to appear real soon - // now (after some event like 'keypress' or 'input') and are - // polling intensively. - this.pollingFast = false - // Self-resetting timeout for the poller - this.polling = new Delayed() - // Used to work around IE issue with selection being forgotten when focus moves away from textarea - this.hasSelection = false - this.composing = null -}; - -TextareaInput.prototype.init = function (display) { - var this$1 = this; - - var input = this, cm = this.cm - this.createField(display) - var te = this.textarea - - display.wrapper.insertBefore(this.wrapper, display.wrapper.firstChild) - - // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore) - if (ios) { te.style.width = "0px" } - - on(te, "input", function () { - if (ie && ie_version >= 9 && this$1.hasSelection) { this$1.hasSelection = null } - input.poll() - }) - - on(te, "paste", function (e) { - if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return } - - cm.state.pasteIncoming = true - input.fastPoll() - }) - - function prepareCopyCut(e) { - if (signalDOMEvent(cm, e)) { return } - if (cm.somethingSelected()) { - setLastCopied({lineWise: false, text: cm.getSelections()}) - } else if (!cm.options.lineWiseCopyCut) { - return - } else { - var ranges = copyableRanges(cm) - setLastCopied({lineWise: true, text: ranges.text}) - if (e.type == "cut") { - cm.setSelections(ranges.ranges, null, sel_dontScroll) - } else { - input.prevInput = "" - te.value = ranges.text.join("\n") - selectInput(te) + var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom); + // Ensure is a {from: {line, ch}, to: {line, ch}} object, and + // forces those lines into the viewport (if possible). + if (viewport && viewport.ensure) { + var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line; + if (ensureFrom < from) { + from = ensureFrom; + to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight); + } else if (Math.min(ensureTo, doc.lastLine()) >= to) { + from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight); + to = ensureTo; } } - if (e.type == "cut") { cm.state.cutIncoming = true } + return {from: from, to: Math.max(to, from + 1)} } - on(te, "cut", prepareCopyCut) - on(te, "copy", prepareCopyCut) - on(display.scroller, "paste", function (e) { - if (eventInWidget(display, e) || signalDOMEvent(cm, e)) { return } - cm.state.pasteIncoming = true - input.focus() - }) + // Re-align line numbers and gutter marks to compensate for + // horizontal scrolling. + function alignHorizontally(cm) { + var display = cm.display, view = display.view; + if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) { return } + var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft; + var gutterW = display.gutters.offsetWidth, left = comp + "px"; + for (var i = 0; i < view.length; i++) { if (!view[i].hidden) { + if (cm.options.fixedGutter) { + if (view[i].gutter) + { view[i].gutter.style.left = left; } + if (view[i].gutterBackground) + { view[i].gutterBackground.style.left = left; } + } + var align = view[i].alignable; + if (align) { for (var j = 0; j < align.length; j++) + { align[j].style.left = left; } } + } } + if (cm.options.fixedGutter) + { display.gutters.style.left = (comp + gutterW) + "px"; } + } - // Prevent normal selection in the editor (we handle our own) - on(display.lineSpace, "selectstart", function (e) { - if (!eventInWidget(display, e)) { e_preventDefault(e) } - }) - - on(te, "compositionstart", function () { - var start = cm.getCursor("from") - if (input.composing) { input.composing.range.clear() } - input.composing = { - start: start, - range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"}) + // Used to ensure that the line number gutter is still the right + // size for the current document size. Returns true when an update + // is needed. + function maybeUpdateLineNumberWidth(cm) { + if (!cm.options.lineNumbers) { return false } + var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display; + if (last.length != display.lineNumChars) { + var test = display.measure.appendChild(elt("div", [elt("div", last)], + "CodeMirror-linenumber CodeMirror-gutter-elt")); + var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW; + display.lineGutter.style.width = ""; + display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1; + display.lineNumWidth = display.lineNumInnerWidth + padding; + display.lineNumChars = display.lineNumInnerWidth ? last.length : -1; + display.lineGutter.style.width = display.lineNumWidth + "px"; + updateGutterSpace(cm); + return true } - }) - on(te, "compositionend", function () { - if (input.composing) { - input.poll() - input.composing.range.clear() - input.composing = null - } - }) -}; - -TextareaInput.prototype.createField = function (_display) { - // Wraps and hides input textarea - this.wrapper = hiddenTextarea() - // The semihidden textarea that is focused when the editor is - // focused, and receives input. - this.textarea = this.wrapper.firstChild -}; - -TextareaInput.prototype.prepareSelection = function () { - // Redraw the selection and/or cursor - var cm = this.cm, display = cm.display, doc = cm.doc - var result = prepareSelection(cm) - - // Move the hidden textarea near the cursor to prevent scrolling artifacts - if (cm.options.moveInputWithCursor) { - var headPos = cursorCoords(cm, doc.sel.primary().head, "div") - var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect() - result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10, - headPos.top + lineOff.top - wrapOff.top)) - result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10, - headPos.left + lineOff.left - wrapOff.left)) - } - - return result -}; - -TextareaInput.prototype.showSelection = function (drawn) { - var cm = this.cm, display = cm.display - removeChildrenAndAdd(display.cursorDiv, drawn.cursors) - removeChildrenAndAdd(display.selectionDiv, drawn.selection) - if (drawn.teTop != null) { - this.wrapper.style.top = drawn.teTop + "px" - this.wrapper.style.left = drawn.teLeft + "px" - } -}; - -// Reset the input to correspond to the selection (or to be empty, -// when not typing and nothing is selected) -TextareaInput.prototype.reset = function (typing) { - if (this.contextMenuPending || this.composing) { return } - var cm = this.cm - if (cm.somethingSelected()) { - this.prevInput = "" - var content = cm.getSelection() - this.textarea.value = content - if (cm.state.focused) { selectInput(this.textarea) } - if (ie && ie_version >= 9) { this.hasSelection = content } - } else if (!typing) { - this.prevInput = this.textarea.value = "" - if (ie && ie_version >= 9) { this.hasSelection = null } - } -}; - -TextareaInput.prototype.getField = function () { return this.textarea }; - -TextareaInput.prototype.supportsTouch = function () { return false }; - -TextareaInput.prototype.focus = function () { - if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt() != this.textarea)) { - try { this.textarea.focus() } - catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM - } -}; - -TextareaInput.prototype.blur = function () { this.textarea.blur() }; - -TextareaInput.prototype.resetPosition = function () { - this.wrapper.style.top = this.wrapper.style.left = 0 -}; - -TextareaInput.prototype.receivedFocus = function () { this.slowPoll() }; - -// Poll for input changes, using the normal rate of polling. This -// runs as long as the editor is focused. -TextareaInput.prototype.slowPoll = function () { - var this$1 = this; - - if (this.pollingFast) { return } - this.polling.set(this.cm.options.pollInterval, function () { - this$1.poll() - if (this$1.cm.state.focused) { this$1.slowPoll() } - }) -}; - -// When an event has just come in that is likely to add or change -// something in the input textarea, we poll faster, to ensure that -// the change appears on the screen quickly. -TextareaInput.prototype.fastPoll = function () { - var missed = false, input = this - input.pollingFast = true - function p() { - var changed = input.poll() - if (!changed && !missed) {missed = true; input.polling.set(60, p)} - else {input.pollingFast = false; input.slowPoll()} - } - input.polling.set(20, p) -}; - -// Read input from the textarea, and update the document to match. -// When something is selected, it is present in the textarea, and -// selected (unless it is huge, in which case a placeholder is -// used). When nothing is selected, the cursor sits after previously -// seen text (can be empty), which is stored in prevInput (we must -// not reset the textarea when typing, because that breaks IME). -TextareaInput.prototype.poll = function () { - var this$1 = this; - - var cm = this.cm, input = this.textarea, prevInput = this.prevInput - // Since this is called a *lot*, try to bail out as cheaply as - // possible when it is clear that nothing happened. hasSelection - // will be the case when there is a lot of text in the textarea, - // in which case reading its value would be expensive. - if (this.contextMenuPending || !cm.state.focused || - (hasSelection(input) && !prevInput && !this.composing) || - cm.isReadOnly() || cm.options.disableInput || cm.state.keySeq) - { return false } - - var text = input.value - // If nothing changed, bail. - if (text == prevInput && !cm.somethingSelected()) { return false } - // Work around nonsensical selection resetting in IE9/10, and - // inexplicable appearance of private area unicode characters on - // some key combos in Mac (#2689). - if (ie && ie_version >= 9 && this.hasSelection === text || - mac && /[\uf700-\uf7ff]/.test(text)) { - cm.display.input.reset() return false } - if (cm.doc.sel == cm.display.selForContextMenu) { - var first = text.charCodeAt(0) - if (first == 0x200b && !prevInput) { prevInput = "\u200b" } - if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo") } - } - // Find the part of the input that is actually new - var same = 0, l = Math.min(prevInput.length, text.length) - while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) { ++same } + // SCROLLING THINGS INTO VIEW - runInOp(cm, function () { - applyTextInput(cm, text.slice(same), prevInput.length - same, - null, this$1.composing ? "*compose" : null) + // If an editor sits on the top or bottom of the window, partially + // scrolled out of view, this ensures that the cursor is visible. + function maybeScrollWindow(cm, rect) { + if (signalDOMEvent(cm, "scrollCursorIntoView")) { return } - // Don't leave long text in the textarea, since it makes further polling slow - if (text.length > 1000 || text.indexOf("\n") > -1) { input.value = this$1.prevInput = "" } - else { this$1.prevInput = text } - - if (this$1.composing) { - this$1.composing.range.clear() - this$1.composing.range = cm.markText(this$1.composing.start, cm.getCursor("to"), - {className: "CodeMirror-composing"}) - } - }) - return true -}; - -TextareaInput.prototype.ensurePolled = function () { - if (this.pollingFast && this.poll()) { this.pollingFast = false } -}; - -TextareaInput.prototype.onKeyPress = function () { - if (ie && ie_version >= 9) { this.hasSelection = null } - this.fastPoll() -}; - -TextareaInput.prototype.onContextMenu = function (e) { - var input = this, cm = input.cm, display = cm.display, te = input.textarea - var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop - if (!pos || presto) { return } // Opera is difficult. - - // Reset the current text selection only if the click is done outside of the selection - // and 'resetSelectionOnContextMenu' option is true. - var reset = cm.options.resetSelectionOnContextMenu - if (reset && cm.doc.sel.contains(pos) == -1) - { operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll) } - - var oldCSS = te.style.cssText, oldWrapperCSS = input.wrapper.style.cssText - input.wrapper.style.cssText = "position: absolute" - var wrapperBox = input.wrapper.getBoundingClientRect() - te.style.cssText = "position: absolute; width: 30px; height: 30px;\n top: " + (e.clientY - wrapperBox.top - 5) + "px; left: " + (e.clientX - wrapperBox.left - 5) + "px;\n z-index: 1000; background: " + (ie ? "rgba(255, 255, 255, .05)" : "transparent") + ";\n outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);" - var oldScrollY - if (webkit) { oldScrollY = window.scrollY } // Work around Chrome issue (#2712) - display.input.focus() - if (webkit) { window.scrollTo(null, oldScrollY) } - display.input.reset() - // Adds "Select all" to context menu in FF - if (!cm.somethingSelected()) { te.value = input.prevInput = " " } - input.contextMenuPending = true - display.selForContextMenu = cm.doc.sel - clearTimeout(display.detectingSelectAll) - - // Select-all will be greyed out if there's nothing to select, so - // this adds a zero-width space so that we can later check whether - // it got selected. - function prepareSelectAllHack() { - if (te.selectionStart != null) { - var selected = cm.somethingSelected() - var extval = "\u200b" + (selected ? te.value : "") - te.value = "\u21da" // Used to catch context-menu undo - te.value = extval - input.prevInput = selected ? "" : "\u200b" - te.selectionStart = 1; te.selectionEnd = extval.length - // Re-set this, in case some other handler touched the - // selection in the meantime. - display.selForContextMenu = cm.doc.sel + var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null; + if (rect.top + box.top < 0) { doScroll = true; } + else if (rect.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) { doScroll = false; } + if (doScroll != null && !phantom) { + var scrollNode = elt("div", "\u200b", null, ("position: absolute;\n top: " + (rect.top - display.viewOffset - paddingTop(cm.display)) + "px;\n height: " + (rect.bottom - rect.top + scrollGap(cm) + display.barHeight) + "px;\n left: " + (rect.left) + "px; width: " + (Math.max(2, rect.right - rect.left)) + "px;")); + cm.display.lineSpace.appendChild(scrollNode); + scrollNode.scrollIntoView(doScroll); + cm.display.lineSpace.removeChild(scrollNode); } } - function rehide() { - input.contextMenuPending = false - input.wrapper.style.cssText = oldWrapperCSS - te.style.cssText = oldCSS - if (ie && ie_version < 9) { display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos) } - // Try to detect the user choosing select-all - if (te.selectionStart != null) { - if (!ie || (ie && ie_version < 9)) { prepareSelectAllHack() } - var i = 0, poll = function () { - if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 && - te.selectionEnd > 0 && input.prevInput == "\u200b") { - operation(cm, selectAll)(cm) - } else if (i++ < 10) { - display.detectingSelectAll = setTimeout(poll, 500) - } else { - display.selForContextMenu = null - display.input.reset() + // Scroll a given position into view (immediately), verifying that + // it actually became visible (as line heights are accurately + // measured, the position of something may 'drift' during drawing). + function scrollPosIntoView(cm, pos, end, margin) { + if (margin == null) { margin = 0; } + var rect; + if (!cm.options.lineWrapping && pos == end) { + // Set pos and end to the cursor positions around the character pos sticks to + // If pos.sticky == "before", that is around pos.ch - 1, otherwise around pos.ch + // If pos == Pos(_, 0, "before"), pos and end are unchanged + pos = pos.ch ? Pos(pos.line, pos.sticky == "before" ? pos.ch - 1 : pos.ch, "after") : pos; + end = pos.sticky == "before" ? Pos(pos.line, pos.ch + 1, "before") : pos; + } + for (var limit = 0; limit < 5; limit++) { + var changed = false; + var coords = cursorCoords(cm, pos); + var endCoords = !end || end == pos ? coords : cursorCoords(cm, end); + rect = {left: Math.min(coords.left, endCoords.left), + top: Math.min(coords.top, endCoords.top) - margin, + right: Math.max(coords.left, endCoords.left), + bottom: Math.max(coords.bottom, endCoords.bottom) + margin}; + var scrollPos = calculateScrollPos(cm, rect); + var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft; + if (scrollPos.scrollTop != null) { + updateScrollTop(cm, scrollPos.scrollTop); + if (Math.abs(cm.doc.scrollTop - startTop) > 1) { changed = true; } + } + if (scrollPos.scrollLeft != null) { + setScrollLeft(cm, scrollPos.scrollLeft); + if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) { changed = true; } + } + if (!changed) { break } + } + return rect + } + + // Scroll a given set of coordinates into view (immediately). + function scrollIntoView(cm, rect) { + var scrollPos = calculateScrollPos(cm, rect); + if (scrollPos.scrollTop != null) { updateScrollTop(cm, scrollPos.scrollTop); } + if (scrollPos.scrollLeft != null) { setScrollLeft(cm, scrollPos.scrollLeft); } + } + + // Calculate a new scroll position needed to scroll the given + // rectangle into view. Returns an object with scrollTop and + // scrollLeft properties. When these are undefined, the + // vertical/horizontal position does not need to be adjusted. + function calculateScrollPos(cm, rect) { + var display = cm.display, snapMargin = textHeight(cm.display); + if (rect.top < 0) { rect.top = 0; } + var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop; + var screen = displayHeight(cm), result = {}; + if (rect.bottom - rect.top > screen) { rect.bottom = rect.top + screen; } + var docBottom = cm.doc.height + paddingVert(display); + var atTop = rect.top < snapMargin, atBottom = rect.bottom > docBottom - snapMargin; + if (rect.top < screentop) { + result.scrollTop = atTop ? 0 : rect.top; + } else if (rect.bottom > screentop + screen) { + var newTop = Math.min(rect.top, (atBottom ? docBottom : rect.bottom) - screen); + if (newTop != screentop) { result.scrollTop = newTop; } + } + + var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft; + var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0); + var tooWide = rect.right - rect.left > screenw; + if (tooWide) { rect.right = rect.left + screenw; } + if (rect.left < 10) + { result.scrollLeft = 0; } + else if (rect.left < screenleft) + { result.scrollLeft = Math.max(0, rect.left - (tooWide ? 0 : 10)); } + else if (rect.right > screenw + screenleft - 3) + { result.scrollLeft = rect.right + (tooWide ? 0 : 10) - screenw; } + return result + } + + // Store a relative adjustment to the scroll position in the current + // operation (to be applied when the operation finishes). + function addToScrollTop(cm, top) { + if (top == null) { return } + resolveScrollToPos(cm); + cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top; + } + + // Make sure that at the end of the operation the current cursor is + // shown. + function ensureCursorVisible(cm) { + resolveScrollToPos(cm); + var cur = cm.getCursor(); + cm.curOp.scrollToPos = {from: cur, to: cur, margin: cm.options.cursorScrollMargin}; + } + + function scrollToCoords(cm, x, y) { + if (x != null || y != null) { resolveScrollToPos(cm); } + if (x != null) { cm.curOp.scrollLeft = x; } + if (y != null) { cm.curOp.scrollTop = y; } + } + + function scrollToRange(cm, range$$1) { + resolveScrollToPos(cm); + cm.curOp.scrollToPos = range$$1; + } + + // When an operation has its scrollToPos property set, and another + // scroll action is applied before the end of the operation, this + // 'simulates' scrolling that position into view in a cheap way, so + // that the effect of intermediate scroll commands is not ignored. + function resolveScrollToPos(cm) { + var range$$1 = cm.curOp.scrollToPos; + if (range$$1) { + cm.curOp.scrollToPos = null; + var from = estimateCoords(cm, range$$1.from), to = estimateCoords(cm, range$$1.to); + scrollToCoordsRange(cm, from, to, range$$1.margin); + } + } + + function scrollToCoordsRange(cm, from, to, margin) { + var sPos = calculateScrollPos(cm, { + left: Math.min(from.left, to.left), + top: Math.min(from.top, to.top) - margin, + right: Math.max(from.right, to.right), + bottom: Math.max(from.bottom, to.bottom) + margin + }); + scrollToCoords(cm, sPos.scrollLeft, sPos.scrollTop); + } + + // Sync the scrollable area and scrollbars, ensure the viewport + // covers the visible area. + function updateScrollTop(cm, val) { + if (Math.abs(cm.doc.scrollTop - val) < 2) { return } + if (!gecko) { updateDisplaySimple(cm, {top: val}); } + setScrollTop(cm, val, true); + if (gecko) { updateDisplaySimple(cm); } + startWorker(cm, 100); + } + + function setScrollTop(cm, val, forceScroll) { + val = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, val); + if (cm.display.scroller.scrollTop == val && !forceScroll) { return } + cm.doc.scrollTop = val; + cm.display.scrollbars.setScrollTop(val); + if (cm.display.scroller.scrollTop != val) { cm.display.scroller.scrollTop = val; } + } + + // Sync scroller and scrollbar, ensure the gutter elements are + // aligned. + function setScrollLeft(cm, val, isScroller, forceScroll) { + val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth); + if ((isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) && !forceScroll) { return } + cm.doc.scrollLeft = val; + alignHorizontally(cm); + if (cm.display.scroller.scrollLeft != val) { cm.display.scroller.scrollLeft = val; } + cm.display.scrollbars.setScrollLeft(val); + } + + // SCROLLBARS + + // Prepare DOM reads needed to update the scrollbars. Done in one + // shot to minimize update/measure roundtrips. + function measureForScrollbars(cm) { + var d = cm.display, gutterW = d.gutters.offsetWidth; + var docH = Math.round(cm.doc.height + paddingVert(cm.display)); + return { + clientHeight: d.scroller.clientHeight, + viewHeight: d.wrapper.clientHeight, + scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth, + viewWidth: d.wrapper.clientWidth, + barLeft: cm.options.fixedGutter ? gutterW : 0, + docHeight: docH, + scrollHeight: docH + scrollGap(cm) + d.barHeight, + nativeBarWidth: d.nativeBarWidth, + gutterWidth: gutterW + } + } + + var NativeScrollbars = function(place, scroll, cm) { + this.cm = cm; + var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar"); + var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar"); + vert.tabIndex = horiz.tabIndex = -1; + place(vert); place(horiz); + + on(vert, "scroll", function () { + if (vert.clientHeight) { scroll(vert.scrollTop, "vertical"); } + }); + on(horiz, "scroll", function () { + if (horiz.clientWidth) { scroll(horiz.scrollLeft, "horizontal"); } + }); + + this.checkedZeroWidth = false; + // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). + if (ie && ie_version < 8) { this.horiz.style.minHeight = this.vert.style.minWidth = "18px"; } + }; + + NativeScrollbars.prototype.update = function (measure) { + var needsH = measure.scrollWidth > measure.clientWidth + 1; + var needsV = measure.scrollHeight > measure.clientHeight + 1; + var sWidth = measure.nativeBarWidth; + + if (needsV) { + this.vert.style.display = "block"; + this.vert.style.bottom = needsH ? sWidth + "px" : "0"; + var totalHeight = measure.viewHeight - (needsH ? sWidth : 0); + // A bug in IE8 can cause this value to be negative, so guard it. + this.vert.firstChild.style.height = + Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px"; + } else { + this.vert.style.display = ""; + this.vert.firstChild.style.height = "0"; + } + + if (needsH) { + this.horiz.style.display = "block"; + this.horiz.style.right = needsV ? sWidth + "px" : "0"; + this.horiz.style.left = measure.barLeft + "px"; + var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0); + this.horiz.firstChild.style.width = + Math.max(0, measure.scrollWidth - measure.clientWidth + totalWidth) + "px"; + } else { + this.horiz.style.display = ""; + this.horiz.firstChild.style.width = "0"; + } + + if (!this.checkedZeroWidth && measure.clientHeight > 0) { + if (sWidth == 0) { this.zeroWidthHack(); } + this.checkedZeroWidth = true; + } + + return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0} + }; + + NativeScrollbars.prototype.setScrollLeft = function (pos) { + if (this.horiz.scrollLeft != pos) { this.horiz.scrollLeft = pos; } + if (this.disableHoriz) { this.enableZeroWidthBar(this.horiz, this.disableHoriz, "horiz"); } + }; + + NativeScrollbars.prototype.setScrollTop = function (pos) { + if (this.vert.scrollTop != pos) { this.vert.scrollTop = pos; } + if (this.disableVert) { this.enableZeroWidthBar(this.vert, this.disableVert, "vert"); } + }; + + NativeScrollbars.prototype.zeroWidthHack = function () { + var w = mac && !mac_geMountainLion ? "12px" : "18px"; + this.horiz.style.height = this.vert.style.width = w; + this.horiz.style.pointerEvents = this.vert.style.pointerEvents = "none"; + this.disableHoriz = new Delayed; + this.disableVert = new Delayed; + }; + + NativeScrollbars.prototype.enableZeroWidthBar = function (bar, delay, type) { + bar.style.pointerEvents = "auto"; + function maybeDisable() { + // To find out whether the scrollbar is still visible, we + // check whether the element under the pixel in the bottom + // right corner of the scrollbar box is the scrollbar box + // itself (when the bar is still visible) or its filler child + // (when the bar is hidden). If it is still visible, we keep + // it enabled, if it's hidden, we disable pointer events. + var box = bar.getBoundingClientRect(); + var elt$$1 = type == "vert" ? document.elementFromPoint(box.right - 1, (box.top + box.bottom) / 2) + : document.elementFromPoint((box.right + box.left) / 2, box.bottom - 1); + if (elt$$1 != bar) { bar.style.pointerEvents = "none"; } + else { delay.set(1000, maybeDisable); } + } + delay.set(1000, maybeDisable); + }; + + NativeScrollbars.prototype.clear = function () { + var parent = this.horiz.parentNode; + parent.removeChild(this.horiz); + parent.removeChild(this.vert); + }; + + var NullScrollbars = function () {}; + + NullScrollbars.prototype.update = function () { return {bottom: 0, right: 0} }; + NullScrollbars.prototype.setScrollLeft = function () {}; + NullScrollbars.prototype.setScrollTop = function () {}; + NullScrollbars.prototype.clear = function () {}; + + function updateScrollbars(cm, measure) { + if (!measure) { measure = measureForScrollbars(cm); } + var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight; + updateScrollbarsInner(cm, measure); + for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) { + if (startWidth != cm.display.barWidth && cm.options.lineWrapping) + { updateHeightsInViewport(cm); } + updateScrollbarsInner(cm, measureForScrollbars(cm)); + startWidth = cm.display.barWidth; startHeight = cm.display.barHeight; + } + } + + // Re-synchronize the fake scrollbars with the actual size of the + // content. + function updateScrollbarsInner(cm, measure) { + var d = cm.display; + var sizes = d.scrollbars.update(measure); + + d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px"; + d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px"; + d.heightForcer.style.borderBottom = sizes.bottom + "px solid transparent"; + + if (sizes.right && sizes.bottom) { + d.scrollbarFiller.style.display = "block"; + d.scrollbarFiller.style.height = sizes.bottom + "px"; + d.scrollbarFiller.style.width = sizes.right + "px"; + } else { d.scrollbarFiller.style.display = ""; } + if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { + d.gutterFiller.style.display = "block"; + d.gutterFiller.style.height = sizes.bottom + "px"; + d.gutterFiller.style.width = measure.gutterWidth + "px"; + } else { d.gutterFiller.style.display = ""; } + } + + var scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars}; + + function initScrollbars(cm) { + if (cm.display.scrollbars) { + cm.display.scrollbars.clear(); + if (cm.display.scrollbars.addClass) + { rmClass(cm.display.wrapper, cm.display.scrollbars.addClass); } + } + + cm.display.scrollbars = new scrollbarModel[cm.options.scrollbarStyle](function (node) { + cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller); + // Prevent clicks in the scrollbars from killing focus + on(node, "mousedown", function () { + if (cm.state.focused) { setTimeout(function () { return cm.display.input.focus(); }, 0); } + }); + node.setAttribute("cm-not-content", "true"); + }, function (pos, axis) { + if (axis == "horizontal") { setScrollLeft(cm, pos); } + else { updateScrollTop(cm, pos); } + }, cm); + if (cm.display.scrollbars.addClass) + { addClass(cm.display.wrapper, cm.display.scrollbars.addClass); } + } + + // Operations are used to wrap a series of changes to the editor + // state in such a way that each change won't have to update the + // cursor and display (which would be awkward, slow, and + // error-prone). Instead, display updates are batched and then all + // combined and executed at once. + + var nextOpId = 0; + // Start a new operation. + function startOperation(cm) { + cm.curOp = { + cm: cm, + viewChanged: false, // Flag that indicates that lines might need to be redrawn + startHeight: cm.doc.height, // Used to detect need to update scrollbar + forceUpdate: false, // Used to force a redraw + updateInput: 0, // Whether to reset the input textarea + typing: false, // Whether this reset should be careful to leave existing text (for compositing) + changeObjs: null, // Accumulated changes, for firing change events + cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on + cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already + selectionChanged: false, // Whether the selection needs to be redrawn + updateMaxLine: false, // Set when the widest line needs to be determined anew + scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet + scrollToPos: null, // Used to scroll to a specific position + focus: false, + id: ++nextOpId // Unique ID + }; + pushOperation(cm.curOp); + } + + // Finish an operation, updating the display and signalling delayed events + function endOperation(cm) { + var op = cm.curOp; + if (op) { finishOperation(op, function (group) { + for (var i = 0; i < group.ops.length; i++) + { group.ops[i].cm.curOp = null; } + endOperations(group); + }); } + } + + // The DOM updates done when an operation finishes are batched so + // that the minimum number of relayouts are required. + function endOperations(group) { + var ops = group.ops; + for (var i = 0; i < ops.length; i++) // Read DOM + { endOperation_R1(ops[i]); } + for (var i$1 = 0; i$1 < ops.length; i$1++) // Write DOM (maybe) + { endOperation_W1(ops[i$1]); } + for (var i$2 = 0; i$2 < ops.length; i$2++) // Read DOM + { endOperation_R2(ops[i$2]); } + for (var i$3 = 0; i$3 < ops.length; i$3++) // Write DOM (maybe) + { endOperation_W2(ops[i$3]); } + for (var i$4 = 0; i$4 < ops.length; i$4++) // Read DOM + { endOperation_finish(ops[i$4]); } + } + + function endOperation_R1(op) { + var cm = op.cm, display = cm.display; + maybeClipScrollbars(cm); + if (op.updateMaxLine) { findMaxLine(cm); } + + op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null || + op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom || + op.scrollToPos.to.line >= display.viewTo) || + display.maxLineChanged && cm.options.lineWrapping; + op.update = op.mustUpdate && + new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate); + } + + function endOperation_W1(op) { + op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update); + } + + function endOperation_R2(op) { + var cm = op.cm, display = cm.display; + if (op.updatedDisplay) { updateHeightsInViewport(cm); } + + op.barMeasure = measureForScrollbars(cm); + + // If the max line changed since it was last measured, measure it, + // and ensure the document's width matches it. + // updateDisplay_W2 will use these properties to do the actual resizing + if (display.maxLineChanged && !cm.options.lineWrapping) { + op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3; + cm.display.sizerWidth = op.adjustWidthTo; + op.barMeasure.scrollWidth = + Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth); + op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm)); + } + + if (op.updatedDisplay || op.selectionChanged) + { op.preparedSelection = display.input.prepareSelection(); } + } + + function endOperation_W2(op) { + var cm = op.cm; + + if (op.adjustWidthTo != null) { + cm.display.sizer.style.minWidth = op.adjustWidthTo + "px"; + if (op.maxScrollLeft < cm.doc.scrollLeft) + { setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true); } + cm.display.maxLineChanged = false; + } + + var takeFocus = op.focus && op.focus == activeElt(); + if (op.preparedSelection) + { cm.display.input.showSelection(op.preparedSelection, takeFocus); } + if (op.updatedDisplay || op.startHeight != cm.doc.height) + { updateScrollbars(cm, op.barMeasure); } + if (op.updatedDisplay) + { setDocumentHeight(cm, op.barMeasure); } + + if (op.selectionChanged) { restartBlink(cm); } + + if (cm.state.focused && op.updateInput) + { cm.display.input.reset(op.typing); } + if (takeFocus) { ensureFocus(op.cm); } + } + + function endOperation_finish(op) { + var cm = op.cm, display = cm.display, doc = cm.doc; + + if (op.updatedDisplay) { postUpdateDisplay(cm, op.update); } + + // Abort mouse wheel delta measurement, when scrolling explicitly + if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos)) + { display.wheelStartX = display.wheelStartY = null; } + + // Propagate the scroll position to the actual DOM scroller + if (op.scrollTop != null) { setScrollTop(cm, op.scrollTop, op.forceScroll); } + + if (op.scrollLeft != null) { setScrollLeft(cm, op.scrollLeft, true, true); } + // If we need to scroll a specific position into view, do so. + if (op.scrollToPos) { + var rect = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from), + clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin); + maybeScrollWindow(cm, rect); + } + + // Fire events for markers that are hidden/unidden by editing or + // undoing + var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers; + if (hidden) { for (var i = 0; i < hidden.length; ++i) + { if (!hidden[i].lines.length) { signal(hidden[i], "hide"); } } } + if (unhidden) { for (var i$1 = 0; i$1 < unhidden.length; ++i$1) + { if (unhidden[i$1].lines.length) { signal(unhidden[i$1], "unhide"); } } } + + if (display.wrapper.offsetHeight) + { doc.scrollTop = cm.display.scroller.scrollTop; } + + // Fire change events, and delayed event handlers + if (op.changeObjs) + { signal(cm, "changes", cm, op.changeObjs); } + if (op.update) + { op.update.finish(); } + } + + // Run the given function in an operation + function runInOp(cm, f) { + if (cm.curOp) { return f() } + startOperation(cm); + try { return f() } + finally { endOperation(cm); } + } + // Wraps a function in an operation. Returns the wrapped function. + function operation(cm, f) { + return function() { + if (cm.curOp) { return f.apply(cm, arguments) } + startOperation(cm); + try { return f.apply(cm, arguments) } + finally { endOperation(cm); } + } + } + // Used to add methods to editor and doc instances, wrapping them in + // operations. + function methodOp(f) { + return function() { + if (this.curOp) { return f.apply(this, arguments) } + startOperation(this); + try { return f.apply(this, arguments) } + finally { endOperation(this); } + } + } + function docMethodOp(f) { + return function() { + var cm = this.cm; + if (!cm || cm.curOp) { return f.apply(this, arguments) } + startOperation(cm); + try { return f.apply(this, arguments) } + finally { endOperation(cm); } + } + } + + // Updates the display.view data structure for a given change to the + // document. From and to are in pre-change coordinates. Lendiff is + // the amount of lines added or subtracted by the change. This is + // used for changes that span multiple lines, or change the way + // lines are divided into visual lines. regLineChange (below) + // registers single-line changes. + function regChange(cm, from, to, lendiff) { + if (from == null) { from = cm.doc.first; } + if (to == null) { to = cm.doc.first + cm.doc.size; } + if (!lendiff) { lendiff = 0; } + + var display = cm.display; + if (lendiff && to < display.viewTo && + (display.updateLineNumbers == null || display.updateLineNumbers > from)) + { display.updateLineNumbers = from; } + + cm.curOp.viewChanged = true; + + if (from >= display.viewTo) { // Change after + if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo) + { resetView(cm); } + } else if (to <= display.viewFrom) { // Change before + if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) { + resetView(cm); + } else { + display.viewFrom += lendiff; + display.viewTo += lendiff; + } + } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap + resetView(cm); + } else if (from <= display.viewFrom) { // Top overlap + var cut = viewCuttingPoint(cm, to, to + lendiff, 1); + if (cut) { + display.view = display.view.slice(cut.index); + display.viewFrom = cut.lineN; + display.viewTo += lendiff; + } else { + resetView(cm); + } + } else if (to >= display.viewTo) { // Bottom overlap + var cut$1 = viewCuttingPoint(cm, from, from, -1); + if (cut$1) { + display.view = display.view.slice(0, cut$1.index); + display.viewTo = cut$1.lineN; + } else { + resetView(cm); + } + } else { // Gap in the middle + var cutTop = viewCuttingPoint(cm, from, from, -1); + var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1); + if (cutTop && cutBot) { + display.view = display.view.slice(0, cutTop.index) + .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN)) + .concat(display.view.slice(cutBot.index)); + display.viewTo += lendiff; + } else { + resetView(cm); + } + } + + var ext = display.externalMeasured; + if (ext) { + if (to < ext.lineN) + { ext.lineN += lendiff; } + else if (from < ext.lineN + ext.size) + { display.externalMeasured = null; } + } + } + + // Register a change to a single line. Type must be one of "text", + // "gutter", "class", "widget" + function regLineChange(cm, line, type) { + cm.curOp.viewChanged = true; + var display = cm.display, ext = cm.display.externalMeasured; + if (ext && line >= ext.lineN && line < ext.lineN + ext.size) + { display.externalMeasured = null; } + + if (line < display.viewFrom || line >= display.viewTo) { return } + var lineView = display.view[findViewIndex(cm, line)]; + if (lineView.node == null) { return } + var arr = lineView.changes || (lineView.changes = []); + if (indexOf(arr, type) == -1) { arr.push(type); } + } + + // Clear the view. + function resetView(cm) { + cm.display.viewFrom = cm.display.viewTo = cm.doc.first; + cm.display.view = []; + cm.display.viewOffset = 0; + } + + function viewCuttingPoint(cm, oldN, newN, dir) { + var index = findViewIndex(cm, oldN), diff, view = cm.display.view; + if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size) + { return {index: index, lineN: newN} } + var n = cm.display.viewFrom; + for (var i = 0; i < index; i++) + { n += view[i].size; } + if (n != oldN) { + if (dir > 0) { + if (index == view.length - 1) { return null } + diff = (n + view[index].size) - oldN; + index++; + } else { + diff = n - oldN; + } + oldN += diff; newN += diff; + } + while (visualLineNo(cm.doc, newN) != newN) { + if (index == (dir < 0 ? 0 : view.length - 1)) { return null } + newN += dir * view[index - (dir < 0 ? 1 : 0)].size; + index += dir; + } + return {index: index, lineN: newN} + } + + // Force the view to cover a given range, adding empty view element + // or clipping off existing ones as needed. + function adjustView(cm, from, to) { + var display = cm.display, view = display.view; + if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) { + display.view = buildViewArray(cm, from, to); + display.viewFrom = from; + } else { + if (display.viewFrom > from) + { display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view); } + else if (display.viewFrom < from) + { display.view = display.view.slice(findViewIndex(cm, from)); } + display.viewFrom = from; + if (display.viewTo < to) + { display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)); } + else if (display.viewTo > to) + { display.view = display.view.slice(0, findViewIndex(cm, to)); } + } + display.viewTo = to; + } + + // Count the number of lines in the view whose DOM representation is + // out of date (or nonexistent). + function countDirtyView(cm) { + var view = cm.display.view, dirty = 0; + for (var i = 0; i < view.length; i++) { + var lineView = view[i]; + if (!lineView.hidden && (!lineView.node || lineView.changes)) { ++dirty; } + } + return dirty + } + + // HIGHLIGHT WORKER + + function startWorker(cm, time) { + if (cm.doc.highlightFrontier < cm.display.viewTo) + { cm.state.highlight.set(time, bind(highlightWorker, cm)); } + } + + function highlightWorker(cm) { + var doc = cm.doc; + if (doc.highlightFrontier >= cm.display.viewTo) { return } + var end = +new Date + cm.options.workTime; + var context = getContextBefore(cm, doc.highlightFrontier); + var changedLines = []; + + doc.iter(context.line, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function (line) { + if (context.line >= cm.display.viewFrom) { // Visible + var oldStyles = line.styles; + var resetState = line.text.length > cm.options.maxHighlightLength ? copyState(doc.mode, context.state) : null; + var highlighted = highlightLine(cm, line, context, true); + if (resetState) { context.state = resetState; } + line.styles = highlighted.styles; + var oldCls = line.styleClasses, newCls = highlighted.classes; + if (newCls) { line.styleClasses = newCls; } + else if (oldCls) { line.styleClasses = null; } + var ischange = !oldStyles || oldStyles.length != line.styles.length || + oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass); + for (var i = 0; !ischange && i < oldStyles.length; ++i) { ischange = oldStyles[i] != line.styles[i]; } + if (ischange) { changedLines.push(context.line); } + line.stateAfter = context.save(); + context.nextLine(); + } else { + if (line.text.length <= cm.options.maxHighlightLength) + { processLine(cm, line.text, context); } + line.stateAfter = context.line % 5 == 0 ? context.save() : null; + context.nextLine(); + } + if (+new Date > end) { + startWorker(cm, cm.options.workDelay); + return true + } + }); + doc.highlightFrontier = context.line; + doc.modeFrontier = Math.max(doc.modeFrontier, context.line); + if (changedLines.length) { runInOp(cm, function () { + for (var i = 0; i < changedLines.length; i++) + { regLineChange(cm, changedLines[i], "text"); } + }); } + } + + // DISPLAY DRAWING + + var DisplayUpdate = function(cm, viewport, force) { + var display = cm.display; + + this.viewport = viewport; + // Store some values that we'll need later (but don't want to force a relayout for) + this.visible = visibleLines(display, cm.doc, viewport); + this.editorIsHidden = !display.wrapper.offsetWidth; + this.wrapperHeight = display.wrapper.clientHeight; + this.wrapperWidth = display.wrapper.clientWidth; + this.oldDisplayWidth = displayWidth(cm); + this.force = force; + this.dims = getDimensions(cm); + this.events = []; + }; + + DisplayUpdate.prototype.signal = function (emitter, type) { + if (hasHandler(emitter, type)) + { this.events.push(arguments); } + }; + DisplayUpdate.prototype.finish = function () { + var this$1 = this; + + for (var i = 0; i < this.events.length; i++) + { signal.apply(null, this$1.events[i]); } + }; + + function maybeClipScrollbars(cm) { + var display = cm.display; + if (!display.scrollbarsClipped && display.scroller.offsetWidth) { + display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth; + display.heightForcer.style.height = scrollGap(cm) + "px"; + display.sizer.style.marginBottom = -display.nativeBarWidth + "px"; + display.sizer.style.borderRightWidth = scrollGap(cm) + "px"; + display.scrollbarsClipped = true; + } + } + + function selectionSnapshot(cm) { + if (cm.hasFocus()) { return null } + var active = activeElt(); + if (!active || !contains(cm.display.lineDiv, active)) { return null } + var result = {activeElt: active}; + if (window.getSelection) { + var sel = window.getSelection(); + if (sel.anchorNode && sel.extend && contains(cm.display.lineDiv, sel.anchorNode)) { + result.anchorNode = sel.anchorNode; + result.anchorOffset = sel.anchorOffset; + result.focusNode = sel.focusNode; + result.focusOffset = sel.focusOffset; + } + } + return result + } + + function restoreSelection(snapshot) { + if (!snapshot || !snapshot.activeElt || snapshot.activeElt == activeElt()) { return } + snapshot.activeElt.focus(); + if (snapshot.anchorNode && contains(document.body, snapshot.anchorNode) && contains(document.body, snapshot.focusNode)) { + var sel = window.getSelection(), range$$1 = document.createRange(); + range$$1.setEnd(snapshot.anchorNode, snapshot.anchorOffset); + range$$1.collapse(false); + sel.removeAllRanges(); + sel.addRange(range$$1); + sel.extend(snapshot.focusNode, snapshot.focusOffset); + } + } + + // Does the actual updating of the line display. Bails out + // (returning false) when there is nothing to be done and forced is + // false. + function updateDisplayIfNeeded(cm, update) { + var display = cm.display, doc = cm.doc; + + if (update.editorIsHidden) { + resetView(cm); + return false + } + + // Bail out if the visible area is already rendered and nothing changed. + if (!update.force && + update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo && + (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) && + display.renderedView == display.view && countDirtyView(cm) == 0) + { return false } + + if (maybeUpdateLineNumberWidth(cm)) { + resetView(cm); + update.dims = getDimensions(cm); + } + + // Compute a suitable new viewport (from & to) + var end = doc.first + doc.size; + var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first); + var to = Math.min(end, update.visible.to + cm.options.viewportMargin); + if (display.viewFrom < from && from - display.viewFrom < 20) { from = Math.max(doc.first, display.viewFrom); } + if (display.viewTo > to && display.viewTo - to < 20) { to = Math.min(end, display.viewTo); } + if (sawCollapsedSpans) { + from = visualLineNo(cm.doc, from); + to = visualLineEndNo(cm.doc, to); + } + + var different = from != display.viewFrom || to != display.viewTo || + display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth; + adjustView(cm, from, to); + + display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom)); + // Position the mover div to align with the current scroll position + cm.display.mover.style.top = display.viewOffset + "px"; + + var toUpdate = countDirtyView(cm); + if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view && + (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo)) + { return false } + + // For big changes, we hide the enclosing element during the + // update, since that speeds up the operations on most browsers. + var selSnapshot = selectionSnapshot(cm); + if (toUpdate > 4) { display.lineDiv.style.display = "none"; } + patchDisplay(cm, display.updateLineNumbers, update.dims); + if (toUpdate > 4) { display.lineDiv.style.display = ""; } + display.renderedView = display.view; + // There might have been a widget with a focused element that got + // hidden or updated, if so re-focus it. + restoreSelection(selSnapshot); + + // Prevent selection and cursors from interfering with the scroll + // width and height. + removeChildren(display.cursorDiv); + removeChildren(display.selectionDiv); + display.gutters.style.height = display.sizer.style.minHeight = 0; + + if (different) { + display.lastWrapHeight = update.wrapperHeight; + display.lastWrapWidth = update.wrapperWidth; + startWorker(cm, 400); + } + + display.updateLineNumbers = null; + + return true + } + + function postUpdateDisplay(cm, update) { + var viewport = update.viewport; + + for (var first = true;; first = false) { + if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) { + // Clip forced viewport to actual scrollable area. + if (viewport && viewport.top != null) + { viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)}; } + // Updated line heights might result in the drawn area not + // actually covering the viewport. Keep looping until it does. + update.visible = visibleLines(cm.display, cm.doc, viewport); + if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo) + { break } + } + if (!updateDisplayIfNeeded(cm, update)) { break } + updateHeightsInViewport(cm); + var barMeasure = measureForScrollbars(cm); + updateSelection(cm); + updateScrollbars(cm, barMeasure); + setDocumentHeight(cm, barMeasure); + update.force = false; + } + + update.signal(cm, "update", cm); + if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) { + update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo); + cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo; + } + } + + function updateDisplaySimple(cm, viewport) { + var update = new DisplayUpdate(cm, viewport); + if (updateDisplayIfNeeded(cm, update)) { + updateHeightsInViewport(cm); + postUpdateDisplay(cm, update); + var barMeasure = measureForScrollbars(cm); + updateSelection(cm); + updateScrollbars(cm, barMeasure); + setDocumentHeight(cm, barMeasure); + update.finish(); + } + } + + // Sync the actual display DOM structure with display.view, removing + // nodes for lines that are no longer in view, and creating the ones + // that are not there yet, and updating the ones that are out of + // date. + function patchDisplay(cm, updateNumbersFrom, dims) { + var display = cm.display, lineNumbers = cm.options.lineNumbers; + var container = display.lineDiv, cur = container.firstChild; + + function rm(node) { + var next = node.nextSibling; + // Works around a throw-scroll bug in OS X Webkit + if (webkit && mac && cm.display.currentWheelTarget == node) + { node.style.display = "none"; } + else + { node.parentNode.removeChild(node); } + return next + } + + var view = display.view, lineN = display.viewFrom; + // Loop over the elements in the view, syncing cur (the DOM nodes + // in display.lineDiv) with the view as we go. + for (var i = 0; i < view.length; i++) { + var lineView = view[i]; + if (lineView.hidden) ; else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet + var node = buildLineElement(cm, lineView, lineN, dims); + container.insertBefore(node, cur); + } else { // Already drawn + while (cur != lineView.node) { cur = rm(cur); } + var updateNumber = lineNumbers && updateNumbersFrom != null && + updateNumbersFrom <= lineN && lineView.lineNumber; + if (lineView.changes) { + if (indexOf(lineView.changes, "gutter") > -1) { updateNumber = false; } + updateLineForChanges(cm, lineView, lineN, dims); + } + if (updateNumber) { + removeChildren(lineView.lineNumber); + lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN))); + } + cur = lineView.node.nextSibling; + } + lineN += lineView.size; + } + while (cur) { cur = rm(cur); } + } + + function updateGutterSpace(cm) { + var width = cm.display.gutters.offsetWidth; + cm.display.sizer.style.marginLeft = width + "px"; + } + + function setDocumentHeight(cm, measure) { + cm.display.sizer.style.minHeight = measure.docHeight + "px"; + cm.display.heightForcer.style.top = measure.docHeight + "px"; + cm.display.gutters.style.height = (measure.docHeight + cm.display.barHeight + scrollGap(cm)) + "px"; + } + + // Rebuild the gutter elements, ensure the margin to the left of the + // code matches their width. + function updateGutters(cm) { + var gutters = cm.display.gutters, specs = cm.options.gutters; + removeChildren(gutters); + var i = 0; + for (; i < specs.length; ++i) { + var gutterClass = specs[i]; + var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass)); + if (gutterClass == "CodeMirror-linenumbers") { + cm.display.lineGutter = gElt; + gElt.style.width = (cm.display.lineNumWidth || 1) + "px"; + } + } + gutters.style.display = i ? "" : "none"; + updateGutterSpace(cm); + } + + // Make sure the gutters options contains the element + // "CodeMirror-linenumbers" when the lineNumbers option is true. + function setGuttersForLineNumbers(options) { + var found = indexOf(options.gutters, "CodeMirror-linenumbers"); + if (found == -1 && options.lineNumbers) { + options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]); + } else if (found > -1 && !options.lineNumbers) { + options.gutters = options.gutters.slice(0); + options.gutters.splice(found, 1); + } + } + + // Since the delta values reported on mouse wheel events are + // unstandardized between browsers and even browser versions, and + // generally horribly unpredictable, this code starts by measuring + // the scroll effect that the first few mouse wheel events have, + // and, from that, detects the way it can convert deltas to pixel + // offsets afterwards. + // + // The reason we want to know the amount a wheel event will scroll + // is that it gives us a chance to update the display before the + // actual scrolling happens, reducing flickering. + + var wheelSamples = 0, wheelPixelsPerUnit = null; + // Fill in a browser-detected starting value on browsers where we + // know one. These don't have to be accurate -- the result of them + // being wrong would just be a slight flicker on the first wheel + // scroll (if it is large enough). + if (ie) { wheelPixelsPerUnit = -.53; } + else if (gecko) { wheelPixelsPerUnit = 15; } + else if (chrome) { wheelPixelsPerUnit = -.7; } + else if (safari) { wheelPixelsPerUnit = -1/3; } + + function wheelEventDelta(e) { + var dx = e.wheelDeltaX, dy = e.wheelDeltaY; + if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) { dx = e.detail; } + if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) { dy = e.detail; } + else if (dy == null) { dy = e.wheelDelta; } + return {x: dx, y: dy} + } + function wheelEventPixels(e) { + var delta = wheelEventDelta(e); + delta.x *= wheelPixelsPerUnit; + delta.y *= wheelPixelsPerUnit; + return delta + } + + function onScrollWheel(cm, e) { + var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y; + + var display = cm.display, scroll = display.scroller; + // Quit if there's nothing to scroll here + var canScrollX = scroll.scrollWidth > scroll.clientWidth; + var canScrollY = scroll.scrollHeight > scroll.clientHeight; + if (!(dx && canScrollX || dy && canScrollY)) { return } + + // Webkit browsers on OS X abort momentum scrolls when the target + // of the scroll event is removed from the scrollable element. + // This hack (see related code in patchDisplay) makes sure the + // element is kept around. + if (dy && mac && webkit) { + outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) { + for (var i = 0; i < view.length; i++) { + if (view[i].node == cur) { + cm.display.currentWheelTarget = cur; + break outer + } } } - display.detectingSelectAll = setTimeout(poll, 200) + } + + // On some browsers, horizontal scrolling will cause redraws to + // happen before the gutter has been realigned, causing it to + // wriggle around in a most unseemly way. When we have an + // estimated pixels/delta value, we just handle horizontal + // scrolling entirely here. It'll be slightly off from native, but + // better than glitching out. + if (dx && !gecko && !presto && wheelPixelsPerUnit != null) { + if (dy && canScrollY) + { updateScrollTop(cm, Math.max(0, scroll.scrollTop + dy * wheelPixelsPerUnit)); } + setScrollLeft(cm, Math.max(0, scroll.scrollLeft + dx * wheelPixelsPerUnit)); + // Only prevent default scrolling if vertical scrolling is + // actually possible. Otherwise, it causes vertical scroll + // jitter on OSX trackpads when deltaX is small and deltaY + // is large (issue #3579) + if (!dy || (dy && canScrollY)) + { e_preventDefault(e); } + display.wheelStartX = null; // Abort measurement, if in progress + return + } + + // 'Project' the visible viewport to cover the area that is being + // scrolled into view (if we know enough to estimate it). + if (dy && wheelPixelsPerUnit != null) { + var pixels = dy * wheelPixelsPerUnit; + var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight; + if (pixels < 0) { top = Math.max(0, top + pixels - 50); } + else { bot = Math.min(cm.doc.height, bot + pixels + 50); } + updateDisplaySimple(cm, {top: top, bottom: bot}); + } + + if (wheelSamples < 20) { + if (display.wheelStartX == null) { + display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop; + display.wheelDX = dx; display.wheelDY = dy; + setTimeout(function () { + if (display.wheelStartX == null) { return } + var movedX = scroll.scrollLeft - display.wheelStartX; + var movedY = scroll.scrollTop - display.wheelStartY; + var sample = (movedY && display.wheelDY && movedY / display.wheelDY) || + (movedX && display.wheelDX && movedX / display.wheelDX); + display.wheelStartX = display.wheelStartY = null; + if (!sample) { return } + wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1); + ++wheelSamples; + }, 200); + } else { + display.wheelDX += dx; display.wheelDY += dy; + } } } - if (ie && ie_version >= 9) { prepareSelectAllHack() } - if (captureRightClick) { - e_stop(e) - var mouseup = function () { - off(window, "mouseup", mouseup) - setTimeout(rehide, 20) + // Selection objects are immutable. A new one is created every time + // the selection changes. A selection is one or more non-overlapping + // (and non-touching) ranges, sorted, and an integer that indicates + // which one is the primary selection (the one that's scrolled into + // view, that getCursor returns, etc). + var Selection = function(ranges, primIndex) { + this.ranges = ranges; + this.primIndex = primIndex; + }; + + Selection.prototype.primary = function () { return this.ranges[this.primIndex] }; + + Selection.prototype.equals = function (other) { + var this$1 = this; + + if (other == this) { return true } + if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) { return false } + for (var i = 0; i < this.ranges.length; i++) { + var here = this$1.ranges[i], there = other.ranges[i]; + if (!equalCursorPos(here.anchor, there.anchor) || !equalCursorPos(here.head, there.head)) { return false } } - on(window, "mouseup", mouseup) - } else { - setTimeout(rehide, 50) - } -}; + return true + }; -TextareaInput.prototype.readOnlyChanged = function (val) { - if (!val) { this.reset() } - this.textarea.disabled = val == "nocursor" -}; + Selection.prototype.deepCopy = function () { + var this$1 = this; -TextareaInput.prototype.setUneditable = function () {}; + var out = []; + for (var i = 0; i < this.ranges.length; i++) + { out[i] = new Range(copyPos(this$1.ranges[i].anchor), copyPos(this$1.ranges[i].head)); } + return new Selection(out, this.primIndex) + }; -TextareaInput.prototype.needsContentAttribute = false + Selection.prototype.somethingSelected = function () { + var this$1 = this; -function fromTextArea(textarea, options) { - options = options ? copyObj(options) : {} - options.value = textarea.value - if (!options.tabindex && textarea.tabIndex) - { options.tabindex = textarea.tabIndex } - if (!options.placeholder && textarea.placeholder) - { options.placeholder = textarea.placeholder } - // Set autofocus to true if this textarea is focused, or if it has - // autofocus and no other element is focused. - if (options.autofocus == null) { - var hasFocus = activeElt() - options.autofocus = hasFocus == textarea || - textarea.getAttribute("autofocus") != null && hasFocus == document.body + for (var i = 0; i < this.ranges.length; i++) + { if (!this$1.ranges[i].empty()) { return true } } + return false + }; + + Selection.prototype.contains = function (pos, end) { + var this$1 = this; + + if (!end) { end = pos; } + for (var i = 0; i < this.ranges.length; i++) { + var range = this$1.ranges[i]; + if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0) + { return i } + } + return -1 + }; + + var Range = function(anchor, head) { + this.anchor = anchor; this.head = head; + }; + + Range.prototype.from = function () { return minPos(this.anchor, this.head) }; + Range.prototype.to = function () { return maxPos(this.anchor, this.head) }; + Range.prototype.empty = function () { return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch }; + + // Take an unsorted, potentially overlapping set of ranges, and + // build a selection out of it. 'Consumes' ranges array (modifying + // it). + function normalizeSelection(cm, ranges, primIndex) { + var mayTouch = cm && cm.options.selectionsMayTouch; + var prim = ranges[primIndex]; + ranges.sort(function (a, b) { return cmp(a.from(), b.from()); }); + primIndex = indexOf(ranges, prim); + for (var i = 1; i < ranges.length; i++) { + var cur = ranges[i], prev = ranges[i - 1]; + var diff = cmp(prev.to(), cur.from()); + if (mayTouch && !cur.empty() ? diff > 0 : diff >= 0) { + var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to()); + var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head; + if (i <= primIndex) { --primIndex; } + ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to)); + } + } + return new Selection(ranges, primIndex) } - function save() {textarea.value = cm.getValue()} + function simpleSelection(anchor, head) { + return new Selection([new Range(anchor, head || anchor)], 0) + } - var realSubmit - if (textarea.form) { - on(textarea.form, "submit", save) - // Deplorable hack to make the submit method do the right thing. - if (!options.leaveSubmitMethodAlone) { - var form = textarea.form - realSubmit = form.submit + // Compute the position of the end of a change (its 'to' property + // refers to the pre-change end). + function changeEnd(change) { + if (!change.text) { return change.to } + return Pos(change.from.line + change.text.length - 1, + lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0)) + } + + // Adjust a position to refer to the post-change position of the + // same text, or the end of the change if the change covers it. + function adjustForChange(pos, change) { + if (cmp(pos, change.from) < 0) { return pos } + if (cmp(pos, change.to) <= 0) { return changeEnd(change) } + + var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch; + if (pos.line == change.to.line) { ch += changeEnd(change).ch - change.to.ch; } + return Pos(line, ch) + } + + function computeSelAfterChange(doc, change) { + var out = []; + for (var i = 0; i < doc.sel.ranges.length; i++) { + var range = doc.sel.ranges[i]; + out.push(new Range(adjustForChange(range.anchor, change), + adjustForChange(range.head, change))); + } + return normalizeSelection(doc.cm, out, doc.sel.primIndex) + } + + function offsetPos(pos, old, nw) { + if (pos.line == old.line) + { return Pos(nw.line, pos.ch - old.ch + nw.ch) } + else + { return Pos(nw.line + (pos.line - old.line), pos.ch) } + } + + // Used by replaceSelections to allow moving the selection to the + // start or around the replaced test. Hint may be "start" or "around". + function computeReplacedSel(doc, changes, hint) { + var out = []; + var oldPrev = Pos(doc.first, 0), newPrev = oldPrev; + for (var i = 0; i < changes.length; i++) { + var change = changes[i]; + var from = offsetPos(change.from, oldPrev, newPrev); + var to = offsetPos(changeEnd(change), oldPrev, newPrev); + oldPrev = change.to; + newPrev = to; + if (hint == "around") { + var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0; + out[i] = new Range(inv ? to : from, inv ? from : to); + } else { + out[i] = new Range(from, from); + } + } + return new Selection(out, doc.sel.primIndex) + } + + // Used to get the editor into a consistent state again when options change. + + function loadMode(cm) { + cm.doc.mode = getMode(cm.options, cm.doc.modeOption); + resetModeState(cm); + } + + function resetModeState(cm) { + cm.doc.iter(function (line) { + if (line.stateAfter) { line.stateAfter = null; } + if (line.styles) { line.styles = null; } + }); + cm.doc.modeFrontier = cm.doc.highlightFrontier = cm.doc.first; + startWorker(cm, 100); + cm.state.modeGen++; + if (cm.curOp) { regChange(cm); } + } + + // DOCUMENT DATA STRUCTURE + + // By default, updates that start and end at the beginning of a line + // are treated specially, in order to make the association of line + // widgets and marker elements with the text behave more intuitive. + function isWholeLineUpdate(doc, change) { + return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" && + (!doc.cm || doc.cm.options.wholeLineUpdateBefore) + } + + // Perform a change on the document data structure. + function updateDoc(doc, change, markedSpans, estimateHeight$$1) { + function spansFor(n) {return markedSpans ? markedSpans[n] : null} + function update(line, text, spans) { + updateLine(line, text, spans, estimateHeight$$1); + signalLater(line, "change", line, change); + } + function linesFor(start, end) { + var result = []; + for (var i = start; i < end; ++i) + { result.push(new Line(text[i], spansFor(i), estimateHeight$$1)); } + return result + } + + var from = change.from, to = change.to, text = change.text; + var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line); + var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line; + + // Adjust the line structure + if (change.full) { + doc.insert(0, linesFor(0, text.length)); + doc.remove(text.length, doc.size - text.length); + } else if (isWholeLineUpdate(doc, change)) { + // This is a whole-line replace. Treated specially to make + // sure line objects move the way they are supposed to. + var added = linesFor(0, text.length - 1); + update(lastLine, lastLine.text, lastSpans); + if (nlines) { doc.remove(from.line, nlines); } + if (added.length) { doc.insert(from.line, added); } + } else if (firstLine == lastLine) { + if (text.length == 1) { + update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans); + } else { + var added$1 = linesFor(1, text.length - 1); + added$1.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight$$1)); + update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); + doc.insert(from.line + 1, added$1); + } + } else if (text.length == 1) { + update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)); + doc.remove(from.line + 1, nlines); + } else { + update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); + update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans); + var added$2 = linesFor(1, text.length - 1); + if (nlines > 1) { doc.remove(from.line + 1, nlines - 1); } + doc.insert(from.line + 1, added$2); + } + + signalLater(doc, "change", doc, change); + } + + // Call f for all linked documents. + function linkedDocs(doc, f, sharedHistOnly) { + function propagate(doc, skip, sharedHist) { + if (doc.linked) { for (var i = 0; i < doc.linked.length; ++i) { + var rel = doc.linked[i]; + if (rel.doc == skip) { continue } + var shared = sharedHist && rel.sharedHist; + if (sharedHistOnly && !shared) { continue } + f(rel.doc, shared); + propagate(rel.doc, doc, shared); + } } + } + propagate(doc, null, true); + } + + // Attach a document to an editor. + function attachDoc(cm, doc) { + if (doc.cm) { throw new Error("This document is already in use.") } + cm.doc = doc; + doc.cm = cm; + estimateLineHeights(cm); + loadMode(cm); + setDirectionClass(cm); + if (!cm.options.lineWrapping) { findMaxLine(cm); } + cm.options.mode = doc.modeOption; + regChange(cm); + } + + function setDirectionClass(cm) { + (cm.doc.direction == "rtl" ? addClass : rmClass)(cm.display.lineDiv, "CodeMirror-rtl"); + } + + function directionChanged(cm) { + runInOp(cm, function () { + setDirectionClass(cm); + regChange(cm); + }); + } + + function History(startGen) { + // Arrays of change events and selections. Doing something adds an + // event to done and clears undo. Undoing moves events from done + // to undone, redoing moves them in the other direction. + this.done = []; this.undone = []; + this.undoDepth = Infinity; + // Used to track when changes can be merged into a single undo + // event + this.lastModTime = this.lastSelTime = 0; + this.lastOp = this.lastSelOp = null; + this.lastOrigin = this.lastSelOrigin = null; + // Used by the isClean() method + this.generation = this.maxGeneration = startGen || 1; + } + + // Create a history change event from an updateDoc-style change + // object. + function historyChangeFromChange(doc, change) { + var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)}; + attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); + linkedDocs(doc, function (doc) { return attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); }, true); + return histChange + } + + // Pop all selection events off the end of a history array. Stop at + // a change event. + function clearSelectionEvents(array) { + while (array.length) { + var last = lst(array); + if (last.ranges) { array.pop(); } + else { break } + } + } + + // Find the top change event in the history. Pop off selection + // events that are in the way. + function lastChangeEvent(hist, force) { + if (force) { + clearSelectionEvents(hist.done); + return lst(hist.done) + } else if (hist.done.length && !lst(hist.done).ranges) { + return lst(hist.done) + } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) { + hist.done.pop(); + return lst(hist.done) + } + } + + // Register a change in the history. Merges changes that are within + // a single operation, or are close together with an origin that + // allows merging (starting with "+") into a single event. + function addChangeToHistory(doc, change, selAfter, opId) { + var hist = doc.history; + hist.undone.length = 0; + var time = +new Date, cur; + var last; + + if ((hist.lastOp == opId || + hist.lastOrigin == change.origin && change.origin && + ((change.origin.charAt(0) == "+" && hist.lastModTime > time - (doc.cm ? doc.cm.options.historyEventDelay : 500)) || + change.origin.charAt(0) == "*")) && + (cur = lastChangeEvent(hist, hist.lastOp == opId))) { + // Merge this change into the last event + last = lst(cur.changes); + if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) { + // Optimized case for simple insertion -- don't want to add + // new changesets for every character typed + last.to = changeEnd(change); + } else { + // Add new sub-event + cur.changes.push(historyChangeFromChange(doc, change)); + } + } else { + // Can not be merged, start a new event. + var before = lst(hist.done); + if (!before || !before.ranges) + { pushSelectionToHistory(doc.sel, hist.done); } + cur = {changes: [historyChangeFromChange(doc, change)], + generation: hist.generation}; + hist.done.push(cur); + while (hist.done.length > hist.undoDepth) { + hist.done.shift(); + if (!hist.done[0].ranges) { hist.done.shift(); } + } + } + hist.done.push(selAfter); + hist.generation = ++hist.maxGeneration; + hist.lastModTime = hist.lastSelTime = time; + hist.lastOp = hist.lastSelOp = opId; + hist.lastOrigin = hist.lastSelOrigin = change.origin; + + if (!last) { signal(doc, "historyAdded"); } + } + + function selectionEventCanBeMerged(doc, origin, prev, sel) { + var ch = origin.charAt(0); + return ch == "*" || + ch == "+" && + prev.ranges.length == sel.ranges.length && + prev.somethingSelected() == sel.somethingSelected() && + new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500) + } + + // Called whenever the selection changes, sets the new selection as + // the pending selection in the history, and pushes the old pending + // selection into the 'done' array when it was significantly + // different (in number of selected ranges, emptiness, or time). + function addSelectionToHistory(doc, sel, opId, options) { + var hist = doc.history, origin = options && options.origin; + + // A new event is started when the previous origin does not match + // the current, or the origins don't allow matching. Origins + // starting with * are always merged, those starting with + are + // merged when similar and close together in time. + if (opId == hist.lastSelOp || + (origin && hist.lastSelOrigin == origin && + (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin || + selectionEventCanBeMerged(doc, origin, lst(hist.done), sel)))) + { hist.done[hist.done.length - 1] = sel; } + else + { pushSelectionToHistory(sel, hist.done); } + + hist.lastSelTime = +new Date; + hist.lastSelOrigin = origin; + hist.lastSelOp = opId; + if (options && options.clearRedo !== false) + { clearSelectionEvents(hist.undone); } + } + + function pushSelectionToHistory(sel, dest) { + var top = lst(dest); + if (!(top && top.ranges && top.equals(sel))) + { dest.push(sel); } + } + + // Used to store marked span information in the history. + function attachLocalSpans(doc, change, from, to) { + var existing = change["spans_" + doc.id], n = 0; + doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function (line) { + if (line.markedSpans) + { (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans; } + ++n; + }); + } + + // When un/re-doing restores text containing marked spans, those + // that have been explicitly cleared should not be restored. + function removeClearedSpans(spans) { + if (!spans) { return null } + var out; + for (var i = 0; i < spans.length; ++i) { + if (spans[i].marker.explicitlyCleared) { if (!out) { out = spans.slice(0, i); } } + else if (out) { out.push(spans[i]); } + } + return !out ? spans : out.length ? out : null + } + + // Retrieve and filter the old marked spans stored in a change event. + function getOldSpans(doc, change) { + var found = change["spans_" + doc.id]; + if (!found) { return null } + var nw = []; + for (var i = 0; i < change.text.length; ++i) + { nw.push(removeClearedSpans(found[i])); } + return nw + } + + // Used for un/re-doing changes from the history. Combines the + // result of computing the existing spans with the set of spans that + // existed in the history (so that deleting around a span and then + // undoing brings back the span). + function mergeOldSpans(doc, change) { + var old = getOldSpans(doc, change); + var stretched = stretchSpansOverChange(doc, change); + if (!old) { return stretched } + if (!stretched) { return old } + + for (var i = 0; i < old.length; ++i) { + var oldCur = old[i], stretchCur = stretched[i]; + if (oldCur && stretchCur) { + spans: for (var j = 0; j < stretchCur.length; ++j) { + var span = stretchCur[j]; + for (var k = 0; k < oldCur.length; ++k) + { if (oldCur[k].marker == span.marker) { continue spans } } + oldCur.push(span); + } + } else if (stretchCur) { + old[i] = stretchCur; + } + } + return old + } + + // Used both to provide a JSON-safe object in .getHistory, and, when + // detaching a document, to split the history in two + function copyHistoryArray(events, newGroup, instantiateSel) { + var copy = []; + for (var i = 0; i < events.length; ++i) { + var event = events[i]; + if (event.ranges) { + copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event); + continue + } + var changes = event.changes, newChanges = []; + copy.push({changes: newChanges}); + for (var j = 0; j < changes.length; ++j) { + var change = changes[j], m = (void 0); + newChanges.push({from: change.from, to: change.to, text: change.text}); + if (newGroup) { for (var prop in change) { if (m = prop.match(/^spans_(\d+)$/)) { + if (indexOf(newGroup, Number(m[1])) > -1) { + lst(newChanges)[prop] = change[prop]; + delete change[prop]; + } + } } } + } + } + return copy + } + + // The 'scroll' parameter given to many of these indicated whether + // the new cursor position should be scrolled into view after + // modifying the selection. + + // If shift is held or the extend flag is set, extends a range to + // include a given position (and optionally a second position). + // Otherwise, simply returns the range between the given positions. + // Used for cursor motion and such. + function extendRange(range, head, other, extend) { + if (extend) { + var anchor = range.anchor; + if (other) { + var posBefore = cmp(head, anchor) < 0; + if (posBefore != (cmp(other, anchor) < 0)) { + anchor = head; + head = other; + } else if (posBefore != (cmp(head, other) < 0)) { + head = other; + } + } + return new Range(anchor, head) + } else { + return new Range(other || head, head) + } + } + + // Extend the primary selection range, discard the rest. + function extendSelection(doc, head, other, options, extend) { + if (extend == null) { extend = doc.cm && (doc.cm.display.shift || doc.extend); } + setSelection(doc, new Selection([extendRange(doc.sel.primary(), head, other, extend)], 0), options); + } + + // Extend all selections (pos is an array of selections with length + // equal the number of selections) + function extendSelections(doc, heads, options) { + var out = []; + var extend = doc.cm && (doc.cm.display.shift || doc.extend); + for (var i = 0; i < doc.sel.ranges.length; i++) + { out[i] = extendRange(doc.sel.ranges[i], heads[i], null, extend); } + var newSel = normalizeSelection(doc.cm, out, doc.sel.primIndex); + setSelection(doc, newSel, options); + } + + // Updates a single range in the selection. + function replaceOneSelection(doc, i, range, options) { + var ranges = doc.sel.ranges.slice(0); + ranges[i] = range; + setSelection(doc, normalizeSelection(doc.cm, ranges, doc.sel.primIndex), options); + } + + // Reset the selection to a single range. + function setSimpleSelection(doc, anchor, head, options) { + setSelection(doc, simpleSelection(anchor, head), options); + } + + // Give beforeSelectionChange handlers a change to influence a + // selection update. + function filterSelectionChange(doc, sel, options) { + var obj = { + ranges: sel.ranges, + update: function(ranges) { + var this$1 = this; + + this.ranges = []; + for (var i = 0; i < ranges.length; i++) + { this$1.ranges[i] = new Range(clipPos(doc, ranges[i].anchor), + clipPos(doc, ranges[i].head)); } + }, + origin: options && options.origin + }; + signal(doc, "beforeSelectionChange", doc, obj); + if (doc.cm) { signal(doc.cm, "beforeSelectionChange", doc.cm, obj); } + if (obj.ranges != sel.ranges) { return normalizeSelection(doc.cm, obj.ranges, obj.ranges.length - 1) } + else { return sel } + } + + function setSelectionReplaceHistory(doc, sel, options) { + var done = doc.history.done, last = lst(done); + if (last && last.ranges) { + done[done.length - 1] = sel; + setSelectionNoUndo(doc, sel, options); + } else { + setSelection(doc, sel, options); + } + } + + // Set a new selection. + function setSelection(doc, sel, options) { + setSelectionNoUndo(doc, sel, options); + addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options); + } + + function setSelectionNoUndo(doc, sel, options) { + if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) + { sel = filterSelectionChange(doc, sel, options); } + + var bias = options && options.bias || + (cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1); + setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true)); + + if (!(options && options.scroll === false) && doc.cm) + { ensureCursorVisible(doc.cm); } + } + + function setSelectionInner(doc, sel) { + if (sel.equals(doc.sel)) { return } + + doc.sel = sel; + + if (doc.cm) { + doc.cm.curOp.updateInput = 1; + doc.cm.curOp.selectionChanged = true; + signalCursorActivity(doc.cm); + } + signalLater(doc, "cursorActivity", doc); + } + + // Verify that the selection does not partially select any atomic + // marked ranges. + function reCheckSelection(doc) { + setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false)); + } + + // Return a selection that does not partially select any atomic + // ranges. + function skipAtomicInSelection(doc, sel, bias, mayClear) { + var out; + for (var i = 0; i < sel.ranges.length; i++) { + var range = sel.ranges[i]; + var old = sel.ranges.length == doc.sel.ranges.length && doc.sel.ranges[i]; + var newAnchor = skipAtomic(doc, range.anchor, old && old.anchor, bias, mayClear); + var newHead = skipAtomic(doc, range.head, old && old.head, bias, mayClear); + if (out || newAnchor != range.anchor || newHead != range.head) { + if (!out) { out = sel.ranges.slice(0, i); } + out[i] = new Range(newAnchor, newHead); + } + } + return out ? normalizeSelection(doc.cm, out, sel.primIndex) : sel + } + + function skipAtomicInner(doc, pos, oldPos, dir, mayClear) { + var line = getLine(doc, pos.line); + if (line.markedSpans) { for (var i = 0; i < line.markedSpans.length; ++i) { + var sp = line.markedSpans[i], m = sp.marker; + if ((sp.from == null || (m.inclusiveLeft ? sp.from <= pos.ch : sp.from < pos.ch)) && + (sp.to == null || (m.inclusiveRight ? sp.to >= pos.ch : sp.to > pos.ch))) { + if (mayClear) { + signal(m, "beforeCursorEnter"); + if (m.explicitlyCleared) { + if (!line.markedSpans) { break } + else {--i; continue} + } + } + if (!m.atomic) { continue } + + if (oldPos) { + var near = m.find(dir < 0 ? 1 : -1), diff = (void 0); + if (dir < 0 ? m.inclusiveRight : m.inclusiveLeft) + { near = movePos(doc, near, -dir, near && near.line == pos.line ? line : null); } + if (near && near.line == pos.line && (diff = cmp(near, oldPos)) && (dir < 0 ? diff < 0 : diff > 0)) + { return skipAtomicInner(doc, near, pos, dir, mayClear) } + } + + var far = m.find(dir < 0 ? -1 : 1); + if (dir < 0 ? m.inclusiveLeft : m.inclusiveRight) + { far = movePos(doc, far, dir, far.line == pos.line ? line : null); } + return far ? skipAtomicInner(doc, far, pos, dir, mayClear) : null + } + } } + return pos + } + + // Ensure a given position is not inside an atomic range. + function skipAtomic(doc, pos, oldPos, bias, mayClear) { + var dir = bias || 1; + var found = skipAtomicInner(doc, pos, oldPos, dir, mayClear) || + (!mayClear && skipAtomicInner(doc, pos, oldPos, dir, true)) || + skipAtomicInner(doc, pos, oldPos, -dir, mayClear) || + (!mayClear && skipAtomicInner(doc, pos, oldPos, -dir, true)); + if (!found) { + doc.cantEdit = true; + return Pos(doc.first, 0) + } + return found + } + + function movePos(doc, pos, dir, line) { + if (dir < 0 && pos.ch == 0) { + if (pos.line > doc.first) { return clipPos(doc, Pos(pos.line - 1)) } + else { return null } + } else if (dir > 0 && pos.ch == (line || getLine(doc, pos.line)).text.length) { + if (pos.line < doc.first + doc.size - 1) { return Pos(pos.line + 1, 0) } + else { return null } + } else { + return new Pos(pos.line, pos.ch + dir) + } + } + + function selectAll(cm) { + cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll); + } + + // UPDATING + + // Allow "beforeChange" event handlers to influence a change + function filterChange(doc, change, update) { + var obj = { + canceled: false, + from: change.from, + to: change.to, + text: change.text, + origin: change.origin, + cancel: function () { return obj.canceled = true; } + }; + if (update) { obj.update = function (from, to, text, origin) { + if (from) { obj.from = clipPos(doc, from); } + if (to) { obj.to = clipPos(doc, to); } + if (text) { obj.text = text; } + if (origin !== undefined) { obj.origin = origin; } + }; } + signal(doc, "beforeChange", doc, obj); + if (doc.cm) { signal(doc.cm, "beforeChange", doc.cm, obj); } + + if (obj.canceled) { + if (doc.cm) { doc.cm.curOp.updateInput = 2; } + return null + } + return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin} + } + + // Apply a change to a document, and add it to the document's + // history, and propagating it to all linked documents. + function makeChange(doc, change, ignoreReadOnly) { + if (doc.cm) { + if (!doc.cm.curOp) { return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly) } + if (doc.cm.state.suppressEdits) { return } + } + + if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) { + change = filterChange(doc, change, true); + if (!change) { return } + } + + // Possibly split or suppress the update based on the presence + // of read-only spans in its range. + var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to); + if (split) { + for (var i = split.length - 1; i >= 0; --i) + { makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text, origin: change.origin}); } + } else { + makeChangeInner(doc, change); + } + } + + function makeChangeInner(doc, change) { + if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) { return } + var selAfter = computeSelAfterChange(doc, change); + addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN); + + makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change)); + var rebased = []; + + linkedDocs(doc, function (doc, sharedHist) { + if (!sharedHist && indexOf(rebased, doc.history) == -1) { + rebaseHist(doc.history, change); + rebased.push(doc.history); + } + makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change)); + }); + } + + // Revert a change stored in a document's history. + function makeChangeFromHistory(doc, type, allowSelectionOnly) { + var suppress = doc.cm && doc.cm.state.suppressEdits; + if (suppress && !allowSelectionOnly) { return } + + var hist = doc.history, event, selAfter = doc.sel; + var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done; + + // Verify that there is a useable event (so that ctrl-z won't + // needlessly clear selection events) + var i = 0; + for (; i < source.length; i++) { + event = source[i]; + if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges) + { break } + } + if (i == source.length) { return } + hist.lastOrigin = hist.lastSelOrigin = null; + + for (;;) { + event = source.pop(); + if (event.ranges) { + pushSelectionToHistory(event, dest); + if (allowSelectionOnly && !event.equals(doc.sel)) { + setSelection(doc, event, {clearRedo: false}); + return + } + selAfter = event; + } else if (suppress) { + source.push(event); + return + } else { break } + } + + // Build up a reverse change object to add to the opposite history + // stack (redo when undoing, and vice versa). + var antiChanges = []; + pushSelectionToHistory(selAfter, dest); + dest.push({changes: antiChanges, generation: hist.generation}); + hist.generation = event.generation || ++hist.maxGeneration; + + var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange"); + + var loop = function ( i ) { + var change = event.changes[i]; + change.origin = type; + if (filter && !filterChange(doc, change, false)) { + source.length = 0; + return {} + } + + antiChanges.push(historyChangeFromChange(doc, change)); + + var after = i ? computeSelAfterChange(doc, change) : lst(source); + makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change)); + if (!i && doc.cm) { doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}); } + var rebased = []; + + // Propagate to the linked documents + linkedDocs(doc, function (doc, sharedHist) { + if (!sharedHist && indexOf(rebased, doc.history) == -1) { + rebaseHist(doc.history, change); + rebased.push(doc.history); + } + makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change)); + }); + }; + + for (var i$1 = event.changes.length - 1; i$1 >= 0; --i$1) { + var returned = loop( i$1 ); + + if ( returned ) return returned.v; + } + } + + // Sub-views need their line numbers shifted when text is added + // above or below them in the parent document. + function shiftDoc(doc, distance) { + if (distance == 0) { return } + doc.first += distance; + doc.sel = new Selection(map(doc.sel.ranges, function (range) { return new Range( + Pos(range.anchor.line + distance, range.anchor.ch), + Pos(range.head.line + distance, range.head.ch) + ); }), doc.sel.primIndex); + if (doc.cm) { + regChange(doc.cm, doc.first, doc.first - distance, distance); + for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++) + { regLineChange(doc.cm, l, "gutter"); } + } + } + + // More lower-level change function, handling only a single document + // (not linked ones). + function makeChangeSingleDoc(doc, change, selAfter, spans) { + if (doc.cm && !doc.cm.curOp) + { return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans) } + + if (change.to.line < doc.first) { + shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line)); + return + } + if (change.from.line > doc.lastLine()) { return } + + // Clip the change to the size of this doc + if (change.from.line < doc.first) { + var shift = change.text.length - 1 - (doc.first - change.from.line); + shiftDoc(doc, shift); + change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch), + text: [lst(change.text)], origin: change.origin}; + } + var last = doc.lastLine(); + if (change.to.line > last) { + change = {from: change.from, to: Pos(last, getLine(doc, last).text.length), + text: [change.text[0]], origin: change.origin}; + } + + change.removed = getBetween(doc, change.from, change.to); + + if (!selAfter) { selAfter = computeSelAfterChange(doc, change); } + if (doc.cm) { makeChangeSingleDocInEditor(doc.cm, change, spans); } + else { updateDoc(doc, change, spans); } + setSelectionNoUndo(doc, selAfter, sel_dontScroll); + } + + // Handle the interaction of a change to a document with the editor + // that this document is part of. + function makeChangeSingleDocInEditor(cm, change, spans) { + var doc = cm.doc, display = cm.display, from = change.from, to = change.to; + + var recomputeMaxLength = false, checkWidthStart = from.line; + if (!cm.options.lineWrapping) { + checkWidthStart = lineNo(visualLine(getLine(doc, from.line))); + doc.iter(checkWidthStart, to.line + 1, function (line) { + if (line == display.maxLine) { + recomputeMaxLength = true; + return true + } + }); + } + + if (doc.sel.contains(change.from, change.to) > -1) + { signalCursorActivity(cm); } + + updateDoc(doc, change, spans, estimateHeight(cm)); + + if (!cm.options.lineWrapping) { + doc.iter(checkWidthStart, from.line + change.text.length, function (line) { + var len = lineLength(line); + if (len > display.maxLineLength) { + display.maxLine = line; + display.maxLineLength = len; + display.maxLineChanged = true; + recomputeMaxLength = false; + } + }); + if (recomputeMaxLength) { cm.curOp.updateMaxLine = true; } + } + + retreatFrontier(doc, from.line); + startWorker(cm, 400); + + var lendiff = change.text.length - (to.line - from.line) - 1; + // Remember that these lines changed, for updating the display + if (change.full) + { regChange(cm); } + else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change)) + { regLineChange(cm, from.line, "text"); } + else + { regChange(cm, from.line, to.line + 1, lendiff); } + + var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change"); + if (changeHandler || changesHandler) { + var obj = { + from: from, to: to, + text: change.text, + removed: change.removed, + origin: change.origin + }; + if (changeHandler) { signalLater(cm, "change", cm, obj); } + if (changesHandler) { (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj); } + } + cm.display.selForContextMenu = null; + } + + function replaceRange(doc, code, from, to, origin) { + var assign; + + if (!to) { to = from; } + if (cmp(to, from) < 0) { (assign = [to, from], from = assign[0], to = assign[1]); } + if (typeof code == "string") { code = doc.splitLines(code); } + makeChange(doc, {from: from, to: to, text: code, origin: origin}); + } + + // Rebasing/resetting history to deal with externally-sourced changes + + function rebaseHistSelSingle(pos, from, to, diff) { + if (to < pos.line) { + pos.line += diff; + } else if (from < pos.line) { + pos.line = from; + pos.ch = 0; + } + } + + // Tries to rebase an array of history events given a change in the + // document. If the change touches the same lines as the event, the + // event, and everything 'behind' it, is discarded. If the change is + // before the event, the event's positions are updated. Uses a + // copy-on-write scheme for the positions, to avoid having to + // reallocate them all on every rebase, but also avoid problems with + // shared position objects being unsafely updated. + function rebaseHistArray(array, from, to, diff) { + for (var i = 0; i < array.length; ++i) { + var sub = array[i], ok = true; + if (sub.ranges) { + if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; } + for (var j = 0; j < sub.ranges.length; j++) { + rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff); + rebaseHistSelSingle(sub.ranges[j].head, from, to, diff); + } + continue + } + for (var j$1 = 0; j$1 < sub.changes.length; ++j$1) { + var cur = sub.changes[j$1]; + if (to < cur.from.line) { + cur.from = Pos(cur.from.line + diff, cur.from.ch); + cur.to = Pos(cur.to.line + diff, cur.to.ch); + } else if (from <= cur.to.line) { + ok = false; + break + } + } + if (!ok) { + array.splice(0, i + 1); + i = 0; + } + } + } + + function rebaseHist(hist, change) { + var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1; + rebaseHistArray(hist.done, from, to, diff); + rebaseHistArray(hist.undone, from, to, diff); + } + + // Utility for applying a change to a line by handle or number, + // returning the number and optionally registering the line as + // changed. + function changeLine(doc, handle, changeType, op) { + var no = handle, line = handle; + if (typeof handle == "number") { line = getLine(doc, clipLine(doc, handle)); } + else { no = lineNo(handle); } + if (no == null) { return null } + if (op(line, no) && doc.cm) { regLineChange(doc.cm, no, changeType); } + return line + } + + // The document is represented as a BTree consisting of leaves, with + // chunk of lines in them, and branches, with up to ten leaves or + // other branch nodes below them. The top node is always a branch + // node, and is the document object itself (meaning it has + // additional methods and properties). + // + // All nodes have parent links. The tree is used both to go from + // line numbers to line objects, and to go from objects to numbers. + // It also indexes by height, and is used to convert between height + // and line object, and to find the total height of the document. + // + // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html + + function LeafChunk(lines) { + var this$1 = this; + + this.lines = lines; + this.parent = null; + var height = 0; + for (var i = 0; i < lines.length; ++i) { + lines[i].parent = this$1; + height += lines[i].height; + } + this.height = height; + } + + LeafChunk.prototype = { + chunkSize: function() { return this.lines.length }, + + // Remove the n lines at offset 'at'. + removeInner: function(at, n) { + var this$1 = this; + + for (var i = at, e = at + n; i < e; ++i) { + var line = this$1.lines[i]; + this$1.height -= line.height; + cleanUpLine(line); + signalLater(line, "delete"); + } + this.lines.splice(at, n); + }, + + // Helper used to collapse a small branch into a single leaf. + collapse: function(lines) { + lines.push.apply(lines, this.lines); + }, + + // Insert the given array of lines at offset 'at', count them as + // having the given height. + insertInner: function(at, lines, height) { + var this$1 = this; + + this.height += height; + this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)); + for (var i = 0; i < lines.length; ++i) { lines[i].parent = this$1; } + }, + + // Used to iterate over a part of the tree. + iterN: function(at, n, op) { + var this$1 = this; + + for (var e = at + n; at < e; ++at) + { if (op(this$1.lines[at])) { return true } } + } + }; + + function BranchChunk(children) { + var this$1 = this; + + this.children = children; + var size = 0, height = 0; + for (var i = 0; i < children.length; ++i) { + var ch = children[i]; + size += ch.chunkSize(); height += ch.height; + ch.parent = this$1; + } + this.size = size; + this.height = height; + this.parent = null; + } + + BranchChunk.prototype = { + chunkSize: function() { return this.size }, + + removeInner: function(at, n) { + var this$1 = this; + + this.size -= n; + for (var i = 0; i < this.children.length; ++i) { + var child = this$1.children[i], sz = child.chunkSize(); + if (at < sz) { + var rm = Math.min(n, sz - at), oldHeight = child.height; + child.removeInner(at, rm); + this$1.height -= oldHeight - child.height; + if (sz == rm) { this$1.children.splice(i--, 1); child.parent = null; } + if ((n -= rm) == 0) { break } + at = 0; + } else { at -= sz; } + } + // If the result is smaller than 25 lines, ensure that it is a + // single leaf node. + if (this.size - n < 25 && + (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) { + var lines = []; + this.collapse(lines); + this.children = [new LeafChunk(lines)]; + this.children[0].parent = this; + } + }, + + collapse: function(lines) { + var this$1 = this; + + for (var i = 0; i < this.children.length; ++i) { this$1.children[i].collapse(lines); } + }, + + insertInner: function(at, lines, height) { + var this$1 = this; + + this.size += lines.length; + this.height += height; + for (var i = 0; i < this.children.length; ++i) { + var child = this$1.children[i], sz = child.chunkSize(); + if (at <= sz) { + child.insertInner(at, lines, height); + if (child.lines && child.lines.length > 50) { + // To avoid memory thrashing when child.lines is huge (e.g. first view of a large file), it's never spliced. + // Instead, small slices are taken. They're taken in order because sequential memory accesses are fastest. + var remaining = child.lines.length % 25 + 25; + for (var pos = remaining; pos < child.lines.length;) { + var leaf = new LeafChunk(child.lines.slice(pos, pos += 25)); + child.height -= leaf.height; + this$1.children.splice(++i, 0, leaf); + leaf.parent = this$1; + } + child.lines = child.lines.slice(0, remaining); + this$1.maybeSpill(); + } + break + } + at -= sz; + } + }, + + // When a node has grown, check whether it should be split. + maybeSpill: function() { + if (this.children.length <= 10) { return } + var me = this; + do { + var spilled = me.children.splice(me.children.length - 5, 5); + var sibling = new BranchChunk(spilled); + if (!me.parent) { // Become the parent node + var copy = new BranchChunk(me.children); + copy.parent = me; + me.children = [copy, sibling]; + me = copy; + } else { + me.size -= sibling.size; + me.height -= sibling.height; + var myIndex = indexOf(me.parent.children, me); + me.parent.children.splice(myIndex + 1, 0, sibling); + } + sibling.parent = me.parent; + } while (me.children.length > 10) + me.parent.maybeSpill(); + }, + + iterN: function(at, n, op) { + var this$1 = this; + + for (var i = 0; i < this.children.length; ++i) { + var child = this$1.children[i], sz = child.chunkSize(); + if (at < sz) { + var used = Math.min(n, sz - at); + if (child.iterN(at, used, op)) { return true } + if ((n -= used) == 0) { break } + at = 0; + } else { at -= sz; } + } + } + }; + + // Line widgets are block elements displayed above or below a line. + + var LineWidget = function(doc, node, options) { + var this$1 = this; + + if (options) { for (var opt in options) { if (options.hasOwnProperty(opt)) + { this$1[opt] = options[opt]; } } } + this.doc = doc; + this.node = node; + }; + + LineWidget.prototype.clear = function () { + var this$1 = this; + + var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line); + if (no == null || !ws) { return } + for (var i = 0; i < ws.length; ++i) { if (ws[i] == this$1) { ws.splice(i--, 1); } } + if (!ws.length) { line.widgets = null; } + var height = widgetHeight(this); + updateLineHeight(line, Math.max(0, line.height - height)); + if (cm) { + runInOp(cm, function () { + adjustScrollWhenAboveVisible(cm, line, -height); + regLineChange(cm, no, "widget"); + }); + signalLater(cm, "lineWidgetCleared", cm, this, no); + } + }; + + LineWidget.prototype.changed = function () { + var this$1 = this; + + var oldH = this.height, cm = this.doc.cm, line = this.line; + this.height = null; + var diff = widgetHeight(this) - oldH; + if (!diff) { return } + if (!lineIsHidden(this.doc, line)) { updateLineHeight(line, line.height + diff); } + if (cm) { + runInOp(cm, function () { + cm.curOp.forceUpdate = true; + adjustScrollWhenAboveVisible(cm, line, diff); + signalLater(cm, "lineWidgetChanged", cm, this$1, lineNo(line)); + }); + } + }; + eventMixin(LineWidget); + + function adjustScrollWhenAboveVisible(cm, line, diff) { + if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop)) + { addToScrollTop(cm, diff); } + } + + function addLineWidget(doc, handle, node, options) { + var widget = new LineWidget(doc, node, options); + var cm = doc.cm; + if (cm && widget.noHScroll) { cm.display.alignWidgets = true; } + changeLine(doc, handle, "widget", function (line) { + var widgets = line.widgets || (line.widgets = []); + if (widget.insertAt == null) { widgets.push(widget); } + else { widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget); } + widget.line = line; + if (cm && !lineIsHidden(doc, line)) { + var aboveVisible = heightAtLine(line) < doc.scrollTop; + updateLineHeight(line, line.height + widgetHeight(widget)); + if (aboveVisible) { addToScrollTop(cm, widget.height); } + cm.curOp.forceUpdate = true; + } + return true + }); + if (cm) { signalLater(cm, "lineWidgetAdded", cm, widget, typeof handle == "number" ? handle : lineNo(handle)); } + return widget + } + + // TEXTMARKERS + + // Created with markText and setBookmark methods. A TextMarker is a + // handle that can be used to clear or find a marked position in the + // document. Line objects hold arrays (markedSpans) containing + // {from, to, marker} object pointing to such marker objects, and + // indicating that such a marker is present on that line. Multiple + // lines may point to the same marker when it spans across lines. + // The spans will have null for their from/to properties when the + // marker continues beyond the start/end of the line. Markers have + // links back to the lines they currently touch. + + // Collapsed markers have unique ids, in order to be able to order + // them, which is needed for uniquely determining an outer marker + // when they overlap (they may nest, but not partially overlap). + var nextMarkerId = 0; + + var TextMarker = function(doc, type) { + this.lines = []; + this.type = type; + this.doc = doc; + this.id = ++nextMarkerId; + }; + + // Clear the marker. + TextMarker.prototype.clear = function () { + var this$1 = this; + + if (this.explicitlyCleared) { return } + var cm = this.doc.cm, withOp = cm && !cm.curOp; + if (withOp) { startOperation(cm); } + if (hasHandler(this, "clear")) { + var found = this.find(); + if (found) { signalLater(this, "clear", found.from, found.to); } + } + var min = null, max = null; + for (var i = 0; i < this.lines.length; ++i) { + var line = this$1.lines[i]; + var span = getMarkedSpanFor(line.markedSpans, this$1); + if (cm && !this$1.collapsed) { regLineChange(cm, lineNo(line), "text"); } + else if (cm) { + if (span.to != null) { max = lineNo(line); } + if (span.from != null) { min = lineNo(line); } + } + line.markedSpans = removeMarkedSpan(line.markedSpans, span); + if (span.from == null && this$1.collapsed && !lineIsHidden(this$1.doc, line) && cm) + { updateLineHeight(line, textHeight(cm.display)); } + } + if (cm && this.collapsed && !cm.options.lineWrapping) { for (var i$1 = 0; i$1 < this.lines.length; ++i$1) { + var visual = visualLine(this$1.lines[i$1]), len = lineLength(visual); + if (len > cm.display.maxLineLength) { + cm.display.maxLine = visual; + cm.display.maxLineLength = len; + cm.display.maxLineChanged = true; + } + } } + + if (min != null && cm && this.collapsed) { regChange(cm, min, max + 1); } + this.lines.length = 0; + this.explicitlyCleared = true; + if (this.atomic && this.doc.cantEdit) { + this.doc.cantEdit = false; + if (cm) { reCheckSelection(cm.doc); } + } + if (cm) { signalLater(cm, "markerCleared", cm, this, min, max); } + if (withOp) { endOperation(cm); } + if (this.parent) { this.parent.clear(); } + }; + + // Find the position of the marker in the document. Returns a {from, + // to} object by default. Side can be passed to get a specific side + // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the + // Pos objects returned contain a line object, rather than a line + // number (used to prevent looking up the same line twice). + TextMarker.prototype.find = function (side, lineObj) { + var this$1 = this; + + if (side == null && this.type == "bookmark") { side = 1; } + var from, to; + for (var i = 0; i < this.lines.length; ++i) { + var line = this$1.lines[i]; + var span = getMarkedSpanFor(line.markedSpans, this$1); + if (span.from != null) { + from = Pos(lineObj ? line : lineNo(line), span.from); + if (side == -1) { return from } + } + if (span.to != null) { + to = Pos(lineObj ? line : lineNo(line), span.to); + if (side == 1) { return to } + } + } + return from && {from: from, to: to} + }; + + // Signals that the marker's widget changed, and surrounding layout + // should be recomputed. + TextMarker.prototype.changed = function () { + var this$1 = this; + + var pos = this.find(-1, true), widget = this, cm = this.doc.cm; + if (!pos || !cm) { return } + runInOp(cm, function () { + var line = pos.line, lineN = lineNo(pos.line); + var view = findViewForLine(cm, lineN); + if (view) { + clearLineMeasurementCacheFor(view); + cm.curOp.selectionChanged = cm.curOp.forceUpdate = true; + } + cm.curOp.updateMaxLine = true; + if (!lineIsHidden(widget.doc, line) && widget.height != null) { + var oldHeight = widget.height; + widget.height = null; + var dHeight = widgetHeight(widget) - oldHeight; + if (dHeight) + { updateLineHeight(line, line.height + dHeight); } + } + signalLater(cm, "markerChanged", cm, this$1); + }); + }; + + TextMarker.prototype.attachLine = function (line) { + if (!this.lines.length && this.doc.cm) { + var op = this.doc.cm.curOp; + if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) + { (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); } + } + this.lines.push(line); + }; + + TextMarker.prototype.detachLine = function (line) { + this.lines.splice(indexOf(this.lines, line), 1); + if (!this.lines.length && this.doc.cm) { + var op = this.doc.cm.curOp + ;(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this); + } + }; + eventMixin(TextMarker); + + // Create a marker, wire it up to the right lines, and + function markText(doc, from, to, options, type) { + // Shared markers (across linked documents) are handled separately + // (markTextShared will call out to this again, once per + // document). + if (options && options.shared) { return markTextShared(doc, from, to, options, type) } + // Ensure we are in an operation. + if (doc.cm && !doc.cm.curOp) { return operation(doc.cm, markText)(doc, from, to, options, type) } + + var marker = new TextMarker(doc, type), diff = cmp(from, to); + if (options) { copyObj(options, marker, false); } + // Don't connect empty markers unless clearWhenEmpty is false + if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false) + { return marker } + if (marker.replacedWith) { + // Showing up as a widget implies collapsed (widget replaces text) + marker.collapsed = true; + marker.widgetNode = eltP("span", [marker.replacedWith], "CodeMirror-widget"); + if (!options.handleMouseEvents) { marker.widgetNode.setAttribute("cm-ignore-events", "true"); } + if (options.insertLeft) { marker.widgetNode.insertLeft = true; } + } + if (marker.collapsed) { + if (conflictingCollapsedRange(doc, from.line, from, to, marker) || + from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker)) + { throw new Error("Inserting collapsed marker partially overlapping an existing one") } + seeCollapsedSpans(); + } + + if (marker.addToHistory) + { addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN); } + + var curLine = from.line, cm = doc.cm, updateMaxLine; + doc.iter(curLine, to.line + 1, function (line) { + if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine) + { updateMaxLine = true; } + if (marker.collapsed && curLine != from.line) { updateLineHeight(line, 0); } + addMarkedSpan(line, new MarkedSpan(marker, + curLine == from.line ? from.ch : null, + curLine == to.line ? to.ch : null)); + ++curLine; + }); + // lineIsHidden depends on the presence of the spans, so needs a second pass + if (marker.collapsed) { doc.iter(from.line, to.line + 1, function (line) { + if (lineIsHidden(doc, line)) { updateLineHeight(line, 0); } + }); } + + if (marker.clearOnEnter) { on(marker, "beforeCursorEnter", function () { return marker.clear(); }); } + + if (marker.readOnly) { + seeReadOnlySpans(); + if (doc.history.done.length || doc.history.undone.length) + { doc.clearHistory(); } + } + if (marker.collapsed) { + marker.id = ++nextMarkerId; + marker.atomic = true; + } + if (cm) { + // Sync editor state + if (updateMaxLine) { cm.curOp.updateMaxLine = true; } + if (marker.collapsed) + { regChange(cm, from.line, to.line + 1); } + else if (marker.className || marker.startStyle || marker.endStyle || marker.css || + marker.attributes || marker.title) + { for (var i = from.line; i <= to.line; i++) { regLineChange(cm, i, "text"); } } + if (marker.atomic) { reCheckSelection(cm.doc); } + signalLater(cm, "markerAdded", cm, marker); + } + return marker + } + + // SHARED TEXTMARKERS + + // A shared marker spans multiple linked documents. It is + // implemented as a meta-marker-object controlling multiple normal + // markers. + var SharedTextMarker = function(markers, primary) { + var this$1 = this; + + this.markers = markers; + this.primary = primary; + for (var i = 0; i < markers.length; ++i) + { markers[i].parent = this$1; } + }; + + SharedTextMarker.prototype.clear = function () { + var this$1 = this; + + if (this.explicitlyCleared) { return } + this.explicitlyCleared = true; + for (var i = 0; i < this.markers.length; ++i) + { this$1.markers[i].clear(); } + signalLater(this, "clear"); + }; + + SharedTextMarker.prototype.find = function (side, lineObj) { + return this.primary.find(side, lineObj) + }; + eventMixin(SharedTextMarker); + + function markTextShared(doc, from, to, options, type) { + options = copyObj(options); + options.shared = false; + var markers = [markText(doc, from, to, options, type)], primary = markers[0]; + var widget = options.widgetNode; + linkedDocs(doc, function (doc) { + if (widget) { options.widgetNode = widget.cloneNode(true); } + markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)); + for (var i = 0; i < doc.linked.length; ++i) + { if (doc.linked[i].isParent) { return } } + primary = lst(markers); + }); + return new SharedTextMarker(markers, primary) + } + + function findSharedMarkers(doc) { + return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), function (m) { return m.parent; }) + } + + function copySharedMarkers(doc, markers) { + for (var i = 0; i < markers.length; i++) { + var marker = markers[i], pos = marker.find(); + var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to); + if (cmp(mFrom, mTo)) { + var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type); + marker.markers.push(subMark); + subMark.parent = marker; + } + } + } + + function detachSharedMarkers(markers) { + var loop = function ( i ) { + var marker = markers[i], linked = [marker.primary.doc]; + linkedDocs(marker.primary.doc, function (d) { return linked.push(d); }); + for (var j = 0; j < marker.markers.length; j++) { + var subMarker = marker.markers[j]; + if (indexOf(linked, subMarker.doc) == -1) { + subMarker.parent = null; + marker.markers.splice(j--, 1); + } + } + }; + + for (var i = 0; i < markers.length; i++) loop( i ); + } + + var nextDocId = 0; + var Doc = function(text, mode, firstLine, lineSep, direction) { + if (!(this instanceof Doc)) { return new Doc(text, mode, firstLine, lineSep, direction) } + if (firstLine == null) { firstLine = 0; } + + BranchChunk.call(this, [new LeafChunk([new Line("", null)])]); + this.first = firstLine; + this.scrollTop = this.scrollLeft = 0; + this.cantEdit = false; + this.cleanGeneration = 1; + this.modeFrontier = this.highlightFrontier = firstLine; + var start = Pos(firstLine, 0); + this.sel = simpleSelection(start); + this.history = new History(null); + this.id = ++nextDocId; + this.modeOption = mode; + this.lineSep = lineSep; + this.direction = (direction == "rtl") ? "rtl" : "ltr"; + this.extend = false; + + if (typeof text == "string") { text = this.splitLines(text); } + updateDoc(this, {from: start, to: start, text: text}); + setSelection(this, simpleSelection(start), sel_dontScroll); + }; + + Doc.prototype = createObj(BranchChunk.prototype, { + constructor: Doc, + // Iterate over the document. Supports two forms -- with only one + // argument, it calls that for each line in the document. With + // three, it iterates over the range given by the first two (with + // the second being non-inclusive). + iter: function(from, to, op) { + if (op) { this.iterN(from - this.first, to - from, op); } + else { this.iterN(this.first, this.first + this.size, from); } + }, + + // Non-public interface for adding and removing lines. + insert: function(at, lines) { + var height = 0; + for (var i = 0; i < lines.length; ++i) { height += lines[i].height; } + this.insertInner(at - this.first, lines, height); + }, + remove: function(at, n) { this.removeInner(at - this.first, n); }, + + // From here, the methods are part of the public interface. Most + // are also available from CodeMirror (editor) instances. + + getValue: function(lineSep) { + var lines = getLines(this, this.first, this.first + this.size); + if (lineSep === false) { return lines } + return lines.join(lineSep || this.lineSeparator()) + }, + setValue: docMethodOp(function(code) { + var top = Pos(this.first, 0), last = this.first + this.size - 1; + makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), + text: this.splitLines(code), origin: "setValue", full: true}, true); + if (this.cm) { scrollToCoords(this.cm, 0, 0); } + setSelection(this, simpleSelection(top), sel_dontScroll); + }), + replaceRange: function(code, from, to, origin) { + from = clipPos(this, from); + to = to ? clipPos(this, to) : from; + replaceRange(this, code, from, to, origin); + }, + getRange: function(from, to, lineSep) { + var lines = getBetween(this, clipPos(this, from), clipPos(this, to)); + if (lineSep === false) { return lines } + return lines.join(lineSep || this.lineSeparator()) + }, + + getLine: function(line) {var l = this.getLineHandle(line); return l && l.text}, + + getLineHandle: function(line) {if (isLine(this, line)) { return getLine(this, line) }}, + getLineNumber: function(line) {return lineNo(line)}, + + getLineHandleVisualStart: function(line) { + if (typeof line == "number") { line = getLine(this, line); } + return visualLine(line) + }, + + lineCount: function() {return this.size}, + firstLine: function() {return this.first}, + lastLine: function() {return this.first + this.size - 1}, + + clipPos: function(pos) {return clipPos(this, pos)}, + + getCursor: function(start) { + var range$$1 = this.sel.primary(), pos; + if (start == null || start == "head") { pos = range$$1.head; } + else if (start == "anchor") { pos = range$$1.anchor; } + else if (start == "end" || start == "to" || start === false) { pos = range$$1.to(); } + else { pos = range$$1.from(); } + return pos + }, + listSelections: function() { return this.sel.ranges }, + somethingSelected: function() {return this.sel.somethingSelected()}, + + setCursor: docMethodOp(function(line, ch, options) { + setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options); + }), + setSelection: docMethodOp(function(anchor, head, options) { + setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options); + }), + extendSelection: docMethodOp(function(head, other, options) { + extendSelection(this, clipPos(this, head), other && clipPos(this, other), options); + }), + extendSelections: docMethodOp(function(heads, options) { + extendSelections(this, clipPosArray(this, heads), options); + }), + extendSelectionsBy: docMethodOp(function(f, options) { + var heads = map(this.sel.ranges, f); + extendSelections(this, clipPosArray(this, heads), options); + }), + setSelections: docMethodOp(function(ranges, primary, options) { + var this$1 = this; + + if (!ranges.length) { return } + var out = []; + for (var i = 0; i < ranges.length; i++) + { out[i] = new Range(clipPos(this$1, ranges[i].anchor), + clipPos(this$1, ranges[i].head)); } + if (primary == null) { primary = Math.min(ranges.length - 1, this.sel.primIndex); } + setSelection(this, normalizeSelection(this.cm, out, primary), options); + }), + addSelection: docMethodOp(function(anchor, head, options) { + var ranges = this.sel.ranges.slice(0); + ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor))); + setSelection(this, normalizeSelection(this.cm, ranges, ranges.length - 1), options); + }), + + getSelection: function(lineSep) { + var this$1 = this; + + var ranges = this.sel.ranges, lines; + for (var i = 0; i < ranges.length; i++) { + var sel = getBetween(this$1, ranges[i].from(), ranges[i].to()); + lines = lines ? lines.concat(sel) : sel; + } + if (lineSep === false) { return lines } + else { return lines.join(lineSep || this.lineSeparator()) } + }, + getSelections: function(lineSep) { + var this$1 = this; + + var parts = [], ranges = this.sel.ranges; + for (var i = 0; i < ranges.length; i++) { + var sel = getBetween(this$1, ranges[i].from(), ranges[i].to()); + if (lineSep !== false) { sel = sel.join(lineSep || this$1.lineSeparator()); } + parts[i] = sel; + } + return parts + }, + replaceSelection: function(code, collapse, origin) { + var dup = []; + for (var i = 0; i < this.sel.ranges.length; i++) + { dup[i] = code; } + this.replaceSelections(dup, collapse, origin || "+input"); + }, + replaceSelections: docMethodOp(function(code, collapse, origin) { + var this$1 = this; + + var changes = [], sel = this.sel; + for (var i = 0; i < sel.ranges.length; i++) { + var range$$1 = sel.ranges[i]; + changes[i] = {from: range$$1.from(), to: range$$1.to(), text: this$1.splitLines(code[i]), origin: origin}; + } + var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse); + for (var i$1 = changes.length - 1; i$1 >= 0; i$1--) + { makeChange(this$1, changes[i$1]); } + if (newSel) { setSelectionReplaceHistory(this, newSel); } + else if (this.cm) { ensureCursorVisible(this.cm); } + }), + undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}), + redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}), + undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}), + redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}), + + setExtending: function(val) {this.extend = val;}, + getExtending: function() {return this.extend}, + + historySize: function() { + var hist = this.history, done = 0, undone = 0; + for (var i = 0; i < hist.done.length; i++) { if (!hist.done[i].ranges) { ++done; } } + for (var i$1 = 0; i$1 < hist.undone.length; i$1++) { if (!hist.undone[i$1].ranges) { ++undone; } } + return {undo: done, redo: undone} + }, + clearHistory: function() {this.history = new History(this.history.maxGeneration);}, + + markClean: function() { + this.cleanGeneration = this.changeGeneration(true); + }, + changeGeneration: function(forceSplit) { + if (forceSplit) + { this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null; } + return this.history.generation + }, + isClean: function (gen) { + return this.history.generation == (gen || this.cleanGeneration) + }, + + getHistory: function() { + return {done: copyHistoryArray(this.history.done), + undone: copyHistoryArray(this.history.undone)} + }, + setHistory: function(histData) { + var hist = this.history = new History(this.history.maxGeneration); + hist.done = copyHistoryArray(histData.done.slice(0), null, true); + hist.undone = copyHistoryArray(histData.undone.slice(0), null, true); + }, + + setGutterMarker: docMethodOp(function(line, gutterID, value) { + return changeLine(this, line, "gutter", function (line) { + var markers = line.gutterMarkers || (line.gutterMarkers = {}); + markers[gutterID] = value; + if (!value && isEmpty(markers)) { line.gutterMarkers = null; } + return true + }) + }), + + clearGutter: docMethodOp(function(gutterID) { + var this$1 = this; + + this.iter(function (line) { + if (line.gutterMarkers && line.gutterMarkers[gutterID]) { + changeLine(this$1, line, "gutter", function () { + line.gutterMarkers[gutterID] = null; + if (isEmpty(line.gutterMarkers)) { line.gutterMarkers = null; } + return true + }); + } + }); + }), + + lineInfo: function(line) { + var n; + if (typeof line == "number") { + if (!isLine(this, line)) { return null } + n = line; + line = getLine(this, line); + if (!line) { return null } + } else { + n = lineNo(line); + if (n == null) { return null } + } + return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, + textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, + widgets: line.widgets} + }, + + addLineClass: docMethodOp(function(handle, where, cls) { + return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) { + var prop = where == "text" ? "textClass" + : where == "background" ? "bgClass" + : where == "gutter" ? "gutterClass" : "wrapClass"; + if (!line[prop]) { line[prop] = cls; } + else if (classTest(cls).test(line[prop])) { return false } + else { line[prop] += " " + cls; } + return true + }) + }), + removeLineClass: docMethodOp(function(handle, where, cls) { + return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function (line) { + var prop = where == "text" ? "textClass" + : where == "background" ? "bgClass" + : where == "gutter" ? "gutterClass" : "wrapClass"; + var cur = line[prop]; + if (!cur) { return false } + else if (cls == null) { line[prop] = null; } + else { + var found = cur.match(classTest(cls)); + if (!found) { return false } + var end = found.index + found[0].length; + line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null; + } + return true + }) + }), + + addLineWidget: docMethodOp(function(handle, node, options) { + return addLineWidget(this, handle, node, options) + }), + removeLineWidget: function(widget) { widget.clear(); }, + + markText: function(from, to, options) { + return markText(this, clipPos(this, from), clipPos(this, to), options, options && options.type || "range") + }, + setBookmark: function(pos, options) { + var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), + insertLeft: options && options.insertLeft, + clearWhenEmpty: false, shared: options && options.shared, + handleMouseEvents: options && options.handleMouseEvents}; + pos = clipPos(this, pos); + return markText(this, pos, pos, realOpts, "bookmark") + }, + findMarksAt: function(pos) { + pos = clipPos(this, pos); + var markers = [], spans = getLine(this, pos.line).markedSpans; + if (spans) { for (var i = 0; i < spans.length; ++i) { + var span = spans[i]; + if ((span.from == null || span.from <= pos.ch) && + (span.to == null || span.to >= pos.ch)) + { markers.push(span.marker.parent || span.marker); } + } } + return markers + }, + findMarks: function(from, to, filter) { + from = clipPos(this, from); to = clipPos(this, to); + var found = [], lineNo$$1 = from.line; + this.iter(from.line, to.line + 1, function (line) { + var spans = line.markedSpans; + if (spans) { for (var i = 0; i < spans.length; i++) { + var span = spans[i]; + if (!(span.to != null && lineNo$$1 == from.line && from.ch >= span.to || + span.from == null && lineNo$$1 != from.line || + span.from != null && lineNo$$1 == to.line && span.from >= to.ch) && + (!filter || filter(span.marker))) + { found.push(span.marker.parent || span.marker); } + } } + ++lineNo$$1; + }); + return found + }, + getAllMarks: function() { + var markers = []; + this.iter(function (line) { + var sps = line.markedSpans; + if (sps) { for (var i = 0; i < sps.length; ++i) + { if (sps[i].from != null) { markers.push(sps[i].marker); } } } + }); + return markers + }, + + posFromIndex: function(off) { + var ch, lineNo$$1 = this.first, sepSize = this.lineSeparator().length; + this.iter(function (line) { + var sz = line.text.length + sepSize; + if (sz > off) { ch = off; return true } + off -= sz; + ++lineNo$$1; + }); + return clipPos(this, Pos(lineNo$$1, ch)) + }, + indexFromPos: function (coords) { + coords = clipPos(this, coords); + var index = coords.ch; + if (coords.line < this.first || coords.ch < 0) { return 0 } + var sepSize = this.lineSeparator().length; + this.iter(this.first, coords.line, function (line) { // iter aborts when callback returns a truthy value + index += line.text.length + sepSize; + }); + return index + }, + + copy: function(copyHistory) { + var doc = new Doc(getLines(this, this.first, this.first + this.size), + this.modeOption, this.first, this.lineSep, this.direction); + doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft; + doc.sel = this.sel; + doc.extend = false; + if (copyHistory) { + doc.history.undoDepth = this.history.undoDepth; + doc.setHistory(this.getHistory()); + } + return doc + }, + + linkedDoc: function(options) { + if (!options) { options = {}; } + var from = this.first, to = this.first + this.size; + if (options.from != null && options.from > from) { from = options.from; } + if (options.to != null && options.to < to) { to = options.to; } + var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from, this.lineSep, this.direction); + if (options.sharedHist) { copy.history = this.history + ; }(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist}); + copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]; + copySharedMarkers(copy, findSharedMarkers(this)); + return copy + }, + unlinkDoc: function(other) { + var this$1 = this; + + if (other instanceof CodeMirror) { other = other.doc; } + if (this.linked) { for (var i = 0; i < this.linked.length; ++i) { + var link = this$1.linked[i]; + if (link.doc != other) { continue } + this$1.linked.splice(i, 1); + other.unlinkDoc(this$1); + detachSharedMarkers(findSharedMarkers(this$1)); + break + } } + // If the histories were shared, split them again + if (other.history == this.history) { + var splitIds = [other.id]; + linkedDocs(other, function (doc) { return splitIds.push(doc.id); }, true); + other.history = new History(null); + other.history.done = copyHistoryArray(this.history.done, splitIds); + other.history.undone = copyHistoryArray(this.history.undone, splitIds); + } + }, + iterLinkedDocs: function(f) {linkedDocs(this, f);}, + + getMode: function() {return this.mode}, + getEditor: function() {return this.cm}, + + splitLines: function(str) { + if (this.lineSep) { return str.split(this.lineSep) } + return splitLinesAuto(str) + }, + lineSeparator: function() { return this.lineSep || "\n" }, + + setDirection: docMethodOp(function (dir) { + if (dir != "rtl") { dir = "ltr"; } + if (dir == this.direction) { return } + this.direction = dir; + this.iter(function (line) { return line.order = null; }); + if (this.cm) { directionChanged(this.cm); } + }) + }); + + // Public alias. + Doc.prototype.eachLine = Doc.prototype.iter; + + // Kludge to work around strange IE behavior where it'll sometimes + // re-fire a series of drag-related events right after the drop (#1551) + var lastDrop = 0; + + function onDrop(e) { + var cm = this; + clearDragCursor(cm); + if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) + { return } + e_preventDefault(e); + if (ie) { lastDrop = +new Date; } + var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; + if (!pos || cm.isReadOnly()) { return } + // Might be a file drop, in which case we simply extract the text + // and insert it. + if (files && files.length && window.FileReader && window.File) { + var n = files.length, text = Array(n), read = 0; + var loadFile = function (file, i) { + if (cm.options.allowDropFileTypes && + indexOf(cm.options.allowDropFileTypes, file.type) == -1) + { return } + + var reader = new FileReader; + reader.onload = operation(cm, function () { + var content = reader.result; + if (/[\x00-\x08\x0e-\x1f]{2}/.test(content)) { content = ""; } + text[i] = content; + if (++read == n) { + pos = clipPos(cm.doc, pos); + var change = {from: pos, to: pos, + text: cm.doc.splitLines(text.join(cm.doc.lineSeparator())), + origin: "paste"}; + makeChange(cm.doc, change); + setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change))); + } + }); + reader.readAsText(file); + }; + for (var i = 0; i < n; ++i) { loadFile(files[i], i); } + } else { // Normal drop + // Don't do a replace if the drop happened inside of the selected text. + if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) { + cm.state.draggingText(e); + // Ensure the editor is re-focused + setTimeout(function () { return cm.display.input.focus(); }, 20); + return + } try { - var wrappedSubmit = form.submit = function () { - save() - form.submit = realSubmit - form.submit() - form.submit = wrappedSubmit + var text$1 = e.dataTransfer.getData("Text"); + if (text$1) { + var selected; + if (cm.state.draggingText && !cm.state.draggingText.copy) + { selected = cm.listSelections(); } + setSelectionNoUndo(cm.doc, simpleSelection(pos, pos)); + if (selected) { for (var i$1 = 0; i$1 < selected.length; ++i$1) + { replaceRange(cm.doc, "", selected[i$1].anchor, selected[i$1].head, "drag"); } } + cm.replaceSelection(text$1, "around", "paste"); + cm.display.input.focus(); } - } catch(e) {} + } + catch(e){} } } - options.finishInit = function (cm) { - cm.save = save - cm.getTextArea = function () { return textarea; } - cm.toTextArea = function () { - cm.toTextArea = isNaN // Prevent this from being ran twice - save() - textarea.parentNode.removeChild(cm.getWrapperElement()) - textarea.style.display = "" - if (textarea.form) { - off(textarea.form, "submit", save) - if (typeof textarea.form.submit == "function") - { textarea.form.submit = realSubmit } + function onDragStart(cm, e) { + if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return } + if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) { return } + + e.dataTransfer.setData("Text", cm.getSelection()); + e.dataTransfer.effectAllowed = "copyMove"; + + // Use dummy image instead of default browsers image. + // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there. + if (e.dataTransfer.setDragImage && !safari) { + var img = elt("img", null, null, "position: fixed; left: 0; top: 0;"); + img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="; + if (presto) { + img.width = img.height = 1; + cm.display.wrapper.appendChild(img); + // Force a relayout, or Opera won't use our image for some obscure reason + img._top = img.offsetTop; + } + e.dataTransfer.setDragImage(img, 0, 0); + if (presto) { img.parentNode.removeChild(img); } + } + } + + function onDragOver(cm, e) { + var pos = posFromMouse(cm, e); + if (!pos) { return } + var frag = document.createDocumentFragment(); + drawSelectionCursor(cm, pos, frag); + if (!cm.display.dragCursor) { + cm.display.dragCursor = elt("div", null, "CodeMirror-cursors CodeMirror-dragcursors"); + cm.display.lineSpace.insertBefore(cm.display.dragCursor, cm.display.cursorDiv); + } + removeChildrenAndAdd(cm.display.dragCursor, frag); + } + + function clearDragCursor(cm) { + if (cm.display.dragCursor) { + cm.display.lineSpace.removeChild(cm.display.dragCursor); + cm.display.dragCursor = null; + } + } + + // These must be handled carefully, because naively registering a + // handler for each editor will cause the editors to never be + // garbage collected. + + function forEachCodeMirror(f) { + if (!document.getElementsByClassName) { return } + var byClass = document.getElementsByClassName("CodeMirror"), editors = []; + for (var i = 0; i < byClass.length; i++) { + var cm = byClass[i].CodeMirror; + if (cm) { editors.push(cm); } + } + if (editors.length) { editors[0].operation(function () { + for (var i = 0; i < editors.length; i++) { f(editors[i]); } + }); } + } + + var globalsRegistered = false; + function ensureGlobalHandlers() { + if (globalsRegistered) { return } + registerGlobalHandlers(); + globalsRegistered = true; + } + function registerGlobalHandlers() { + // When the window resizes, we need to refresh active editors. + var resizeTimer; + on(window, "resize", function () { + if (resizeTimer == null) { resizeTimer = setTimeout(function () { + resizeTimer = null; + forEachCodeMirror(onResize); + }, 100); } + }); + // When the window loses focus, we want to show the editor as blurred + on(window, "blur", function () { return forEachCodeMirror(onBlur); }); + } + // Called when the window resizes + function onResize(cm) { + var d = cm.display; + // Might be a text scaling operation, clear size caches. + d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null; + d.scrollbarsClipped = false; + cm.setSize(); + } + + var keyNames = { + 3: "Pause", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", + 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", + 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", + 46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", + 106: "*", 107: "=", 109: "-", 110: ".", 111: "/", 127: "Delete", 145: "ScrollLock", + 173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", + 221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete", + 63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert" + }; + + // Number keys + for (var i = 0; i < 10; i++) { keyNames[i + 48] = keyNames[i + 96] = String(i); } + // Alphabetic keys + for (var i$1 = 65; i$1 <= 90; i$1++) { keyNames[i$1] = String.fromCharCode(i$1); } + // Function keys + for (var i$2 = 1; i$2 <= 12; i$2++) { keyNames[i$2 + 111] = keyNames[i$2 + 63235] = "F" + i$2; } + + var keyMap = {}; + + keyMap.basic = { + "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", + "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", + "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore", + "Tab": "defaultTab", "Shift-Tab": "indentAuto", + "Enter": "newlineAndIndent", "Insert": "toggleOverwrite", + "Esc": "singleSelection" + }; + // Note that the save and find-related commands aren't defined by + // default. User code or addons can define them. Unknown commands + // are simply ignored. + keyMap.pcDefault = { + "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", + "Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown", + "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", + "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", + "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", + "Ctrl-[": "indentLess", "Ctrl-]": "indentMore", + "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection", + "fallthrough": "basic" + }; + // Very basic readline/emacs-style bindings, which are standard on Mac. + keyMap.emacsy = { + "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", + "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", + "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", + "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars", + "Ctrl-O": "openLine" + }; + keyMap.macDefault = { + "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", + "Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", + "Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore", + "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", + "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", + "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight", + "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd", + "fallthrough": ["basic", "emacsy"] + }; + keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; + + // KEYMAP DISPATCH + + function normalizeKeyName(name) { + var parts = name.split(/-(?!$)/); + name = parts[parts.length - 1]; + var alt, ctrl, shift, cmd; + for (var i = 0; i < parts.length - 1; i++) { + var mod = parts[i]; + if (/^(cmd|meta|m)$/i.test(mod)) { cmd = true; } + else if (/^a(lt)?$/i.test(mod)) { alt = true; } + else if (/^(c|ctrl|control)$/i.test(mod)) { ctrl = true; } + else if (/^s(hift)?$/i.test(mod)) { shift = true; } + else { throw new Error("Unrecognized modifier name: " + mod) } + } + if (alt) { name = "Alt-" + name; } + if (ctrl) { name = "Ctrl-" + name; } + if (cmd) { name = "Cmd-" + name; } + if (shift) { name = "Shift-" + name; } + return name + } + + // This is a kludge to keep keymaps mostly working as raw objects + // (backwards compatibility) while at the same time support features + // like normalization and multi-stroke key bindings. It compiles a + // new normalized keymap, and then updates the old object to reflect + // this. + function normalizeKeyMap(keymap) { + var copy = {}; + for (var keyname in keymap) { if (keymap.hasOwnProperty(keyname)) { + var value = keymap[keyname]; + if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) { continue } + if (value == "...") { delete keymap[keyname]; continue } + + var keys = map(keyname.split(" "), normalizeKeyName); + for (var i = 0; i < keys.length; i++) { + var val = (void 0), name = (void 0); + if (i == keys.length - 1) { + name = keys.join(" "); + val = value; + } else { + name = keys.slice(0, i + 1).join(" "); + val = "..."; + } + var prev = copy[name]; + if (!prev) { copy[name] = val; } + else if (prev != val) { throw new Error("Inconsistent bindings for " + name) } + } + delete keymap[keyname]; + } } + for (var prop in copy) { keymap[prop] = copy[prop]; } + return keymap + } + + function lookupKey(key, map$$1, handle, context) { + map$$1 = getKeyMap(map$$1); + var found = map$$1.call ? map$$1.call(key, context) : map$$1[key]; + if (found === false) { return "nothing" } + if (found === "...") { return "multi" } + if (found != null && handle(found)) { return "handled" } + + if (map$$1.fallthrough) { + if (Object.prototype.toString.call(map$$1.fallthrough) != "[object Array]") + { return lookupKey(key, map$$1.fallthrough, handle, context) } + for (var i = 0; i < map$$1.fallthrough.length; i++) { + var result = lookupKey(key, map$$1.fallthrough[i], handle, context); + if (result) { return result } } } } - textarea.style.display = "none" - var cm = CodeMirror(function (node) { return textarea.parentNode.insertBefore(node, textarea.nextSibling); }, - options) - return cm -} + // Modifier key presses don't count as 'real' key presses for the + // purpose of keymap fallthrough. + function isModifierKey(value) { + var name = typeof value == "string" ? value : keyNames[value.keyCode]; + return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod" + } -function addLegacyProps(CodeMirror) { - CodeMirror.off = off - CodeMirror.on = on - CodeMirror.wheelEventPixels = wheelEventPixels - CodeMirror.Doc = Doc - CodeMirror.splitLines = splitLinesAuto - CodeMirror.countColumn = countColumn - CodeMirror.findColumn = findColumn - CodeMirror.isWordChar = isWordCharBasic - CodeMirror.Pass = Pass - CodeMirror.signal = signal - CodeMirror.Line = Line - CodeMirror.changeEnd = changeEnd - CodeMirror.scrollbarModel = scrollbarModel - CodeMirror.Pos = Pos - CodeMirror.cmpPos = cmp - CodeMirror.modes = modes - CodeMirror.mimeModes = mimeModes - CodeMirror.resolveMode = resolveMode - CodeMirror.getMode = getMode - CodeMirror.modeExtensions = modeExtensions - CodeMirror.extendMode = extendMode - CodeMirror.copyState = copyState - CodeMirror.startState = startState - CodeMirror.innerMode = innerMode - CodeMirror.commands = commands - CodeMirror.keyMap = keyMap - CodeMirror.keyName = keyName - CodeMirror.isModifierKey = isModifierKey - CodeMirror.lookupKey = lookupKey - CodeMirror.normalizeKeyMap = normalizeKeyMap - CodeMirror.StringStream = StringStream - CodeMirror.SharedTextMarker = SharedTextMarker - CodeMirror.TextMarker = TextMarker - CodeMirror.LineWidget = LineWidget - CodeMirror.e_preventDefault = e_preventDefault - CodeMirror.e_stopPropagation = e_stopPropagation - CodeMirror.e_stop = e_stop - CodeMirror.addClass = addClass - CodeMirror.contains = contains - CodeMirror.rmClass = rmClass - CodeMirror.keyNames = keyNames -} + function addModifierNames(name, event, noShift) { + var base = name; + if (event.altKey && base != "Alt") { name = "Alt-" + name; } + if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") { name = "Ctrl-" + name; } + if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") { name = "Cmd-" + name; } + if (!noShift && event.shiftKey && base != "Shift") { name = "Shift-" + name; } + return name + } -// EDITOR CONSTRUCTOR + // Look up the name of a key as indicated by an event object. + function keyName(event, noShift) { + if (presto && event.keyCode == 34 && event["char"]) { return false } + var name = keyNames[event.keyCode]; + if (name == null || event.altGraphKey) { return false } + // Ctrl-ScrollLock has keyCode 3, same as Ctrl-Pause, + // so we'll use event.code when available (Chrome 48+, FF 38+, Safari 10.1+) + if (event.keyCode == 3 && event.code) { name = event.code; } + return addModifierNames(name, event, noShift) + } -defineOptions(CodeMirror) + function getKeyMap(val) { + return typeof val == "string" ? keyMap[val] : val + } -addEditorMethods(CodeMirror) + // Helper for deleting text near the selection(s), used to implement + // backspace, delete, and similar functionality. + function deleteNearSelection(cm, compute) { + var ranges = cm.doc.sel.ranges, kill = []; + // Build up a set of ranges to kill first, merging overlapping + // ranges. + for (var i = 0; i < ranges.length; i++) { + var toKill = compute(ranges[i]); + while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) { + var replaced = kill.pop(); + if (cmp(replaced.from, toKill.from) < 0) { + toKill.from = replaced.from; + break + } + } + kill.push(toKill); + } + // Next, remove those actual ranges. + runInOp(cm, function () { + for (var i = kill.length - 1; i >= 0; i--) + { replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete"); } + ensureCursorVisible(cm); + }); + } -// Set up methods on CodeMirror's prototype to redirect to the editor's document. -var dontDelegate = "iter insert remove copy getEditor constructor".split(" ") -for (var prop in Doc.prototype) { if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0) - { CodeMirror.prototype[prop] = (function(method) { - return function() {return method.apply(this.doc, arguments)} - })(Doc.prototype[prop]) } } + function moveCharLogically(line, ch, dir) { + var target = skipExtendingChars(line.text, ch + dir, dir); + return target < 0 || target > line.text.length ? null : target + } -eventMixin(Doc) + function moveLogically(line, start, dir) { + var ch = moveCharLogically(line, start.ch, dir); + return ch == null ? null : new Pos(start.line, ch, dir < 0 ? "after" : "before") + } -// INPUT HANDLING + function endOfLine(visually, cm, lineObj, lineNo, dir) { + if (visually) { + var order = getOrder(lineObj, cm.doc.direction); + if (order) { + var part = dir < 0 ? lst(order) : order[0]; + var moveInStorageOrder = (dir < 0) == (part.level == 1); + var sticky = moveInStorageOrder ? "after" : "before"; + var ch; + // With a wrapped rtl chunk (possibly spanning multiple bidi parts), + // it could be that the last bidi part is not on the last visual line, + // since visual lines contain content order-consecutive chunks. + // Thus, in rtl, we are looking for the first (content-order) character + // in the rtl chunk that is on the last line (that is, the same line + // as the last (content-order) character). + if (part.level > 0 || cm.doc.direction == "rtl") { + var prep = prepareMeasureForLine(cm, lineObj); + ch = dir < 0 ? lineObj.text.length - 1 : 0; + var targetTop = measureCharPrepared(cm, prep, ch).top; + ch = findFirst(function (ch) { return measureCharPrepared(cm, prep, ch).top == targetTop; }, (dir < 0) == (part.level == 1) ? part.from : part.to - 1, ch); + if (sticky == "before") { ch = moveCharLogically(lineObj, ch, 1); } + } else { ch = dir < 0 ? part.to : part.from; } + return new Pos(lineNo, ch, sticky) + } + } + return new Pos(lineNo, dir < 0 ? lineObj.text.length : 0, dir < 0 ? "before" : "after") + } -CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput} + function moveVisually(cm, line, start, dir) { + var bidi = getOrder(line, cm.doc.direction); + if (!bidi) { return moveLogically(line, start, dir) } + if (start.ch >= line.text.length) { + start.ch = line.text.length; + start.sticky = "before"; + } else if (start.ch <= 0) { + start.ch = 0; + start.sticky = "after"; + } + var partPos = getBidiPartAt(bidi, start.ch, start.sticky), part = bidi[partPos]; + if (cm.doc.direction == "ltr" && part.level % 2 == 0 && (dir > 0 ? part.to > start.ch : part.from < start.ch)) { + // Case 1: We move within an ltr part in an ltr editor. Even with wrapped lines, + // nothing interesting happens. + return moveLogically(line, start, dir) + } -// MODE DEFINITION AND QUERYING + var mv = function (pos, dir) { return moveCharLogically(line, pos instanceof Pos ? pos.ch : pos, dir); }; + var prep; + var getWrappedLineExtent = function (ch) { + if (!cm.options.lineWrapping) { return {begin: 0, end: line.text.length} } + prep = prep || prepareMeasureForLine(cm, line); + return wrappedLineExtentChar(cm, line, prep, ch) + }; + var wrappedLineExtent = getWrappedLineExtent(start.sticky == "before" ? mv(start, -1) : start.ch); -// Extra arguments are stored as the mode's dependencies, which is -// used by (legacy) mechanisms like loadmode.js to automatically -// load a mode. (Preferred mechanism is the require/define calls.) -CodeMirror.defineMode = function(name/*, mode, …*/) { - if (!CodeMirror.defaults.mode && name != "null") { CodeMirror.defaults.mode = name } - defineMode.apply(this, arguments) -} + if (cm.doc.direction == "rtl" || part.level == 1) { + var moveInStorageOrder = (part.level == 1) == (dir < 0); + var ch = mv(start, moveInStorageOrder ? 1 : -1); + if (ch != null && (!moveInStorageOrder ? ch >= part.from && ch >= wrappedLineExtent.begin : ch <= part.to && ch <= wrappedLineExtent.end)) { + // Case 2: We move within an rtl part or in an rtl editor on the same visual line + var sticky = moveInStorageOrder ? "before" : "after"; + return new Pos(start.line, ch, sticky) + } + } -CodeMirror.defineMIME = defineMIME + // Case 3: Could not move within this bidi part in this visual line, so leave + // the current bidi part -// Minimal default mode. -CodeMirror.defineMode("null", function () { return ({token: function (stream) { return stream.skipToEnd(); }}); }) -CodeMirror.defineMIME("text/plain", "null") + var searchInVisualLine = function (partPos, dir, wrappedLineExtent) { + var getRes = function (ch, moveInStorageOrder) { return moveInStorageOrder + ? new Pos(start.line, mv(ch, 1), "before") + : new Pos(start.line, ch, "after"); }; -// EXTENSIONS + for (; partPos >= 0 && partPos < bidi.length; partPos += dir) { + var part = bidi[partPos]; + var moveInStorageOrder = (dir > 0) == (part.level != 1); + var ch = moveInStorageOrder ? wrappedLineExtent.begin : mv(wrappedLineExtent.end, -1); + if (part.from <= ch && ch < part.to) { return getRes(ch, moveInStorageOrder) } + ch = moveInStorageOrder ? part.from : mv(part.to, -1); + if (wrappedLineExtent.begin <= ch && ch < wrappedLineExtent.end) { return getRes(ch, moveInStorageOrder) } + } + }; -CodeMirror.defineExtension = function (name, func) { - CodeMirror.prototype[name] = func -} -CodeMirror.defineDocExtension = function (name, func) { - Doc.prototype[name] = func -} + // Case 3a: Look for other bidi parts on the same visual line + var res = searchInVisualLine(partPos + dir, dir, wrappedLineExtent); + if (res) { return res } -CodeMirror.fromTextArea = fromTextArea + // Case 3b: Look for other bidi parts on the next visual line + var nextCh = dir > 0 ? wrappedLineExtent.end : mv(wrappedLineExtent.begin, -1); + if (nextCh != null && !(dir > 0 && nextCh == line.text.length)) { + res = searchInVisualLine(dir > 0 ? 0 : bidi.length - 1, dir, getWrappedLineExtent(nextCh)); + if (res) { return res } + } -addLegacyProps(CodeMirror) + // Case 4: Nowhere to move + return null + } -CodeMirror.version = "5.40.2" + // Commands are parameter-less actions that can be performed on an + // editor, mostly used for keybindings. + var commands = { + selectAll: selectAll, + singleSelection: function (cm) { return cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); }, + killLine: function (cm) { return deleteNearSelection(cm, function (range) { + if (range.empty()) { + var len = getLine(cm.doc, range.head.line).text.length; + if (range.head.ch == len && range.head.line < cm.lastLine()) + { return {from: range.head, to: Pos(range.head.line + 1, 0)} } + else + { return {from: range.head, to: Pos(range.head.line, len)} } + } else { + return {from: range.from(), to: range.to()} + } + }); }, + deleteLine: function (cm) { return deleteNearSelection(cm, function (range) { return ({ + from: Pos(range.from().line, 0), + to: clipPos(cm.doc, Pos(range.to().line + 1, 0)) + }); }); }, + delLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { return ({ + from: Pos(range.from().line, 0), to: range.from() + }); }); }, + delWrappedLineLeft: function (cm) { return deleteNearSelection(cm, function (range) { + var top = cm.charCoords(range.head, "div").top + 5; + var leftPos = cm.coordsChar({left: 0, top: top}, "div"); + return {from: leftPos, to: range.from()} + }); }, + delWrappedLineRight: function (cm) { return deleteNearSelection(cm, function (range) { + var top = cm.charCoords(range.head, "div").top + 5; + var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"); + return {from: range.from(), to: rightPos } + }); }, + undo: function (cm) { return cm.undo(); }, + redo: function (cm) { return cm.redo(); }, + undoSelection: function (cm) { return cm.undoSelection(); }, + redoSelection: function (cm) { return cm.redoSelection(); }, + goDocStart: function (cm) { return cm.extendSelection(Pos(cm.firstLine(), 0)); }, + goDocEnd: function (cm) { return cm.extendSelection(Pos(cm.lastLine())); }, + goLineStart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStart(cm, range.head.line); }, + {origin: "+move", bias: 1} + ); }, + goLineStartSmart: function (cm) { return cm.extendSelectionsBy(function (range) { return lineStartSmart(cm, range.head); }, + {origin: "+move", bias: 1} + ); }, + goLineEnd: function (cm) { return cm.extendSelectionsBy(function (range) { return lineEnd(cm, range.head.line); }, + {origin: "+move", bias: -1} + ); }, + goLineRight: function (cm) { return cm.extendSelectionsBy(function (range) { + var top = cm.cursorCoords(range.head, "div").top + 5; + return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div") + }, sel_move); }, + goLineLeft: function (cm) { return cm.extendSelectionsBy(function (range) { + var top = cm.cursorCoords(range.head, "div").top + 5; + return cm.coordsChar({left: 0, top: top}, "div") + }, sel_move); }, + goLineLeftSmart: function (cm) { return cm.extendSelectionsBy(function (range) { + var top = cm.cursorCoords(range.head, "div").top + 5; + var pos = cm.coordsChar({left: 0, top: top}, "div"); + if (pos.ch < cm.getLine(pos.line).search(/\S/)) { return lineStartSmart(cm, range.head) } + return pos + }, sel_move); }, + goLineUp: function (cm) { return cm.moveV(-1, "line"); }, + goLineDown: function (cm) { return cm.moveV(1, "line"); }, + goPageUp: function (cm) { return cm.moveV(-1, "page"); }, + goPageDown: function (cm) { return cm.moveV(1, "page"); }, + goCharLeft: function (cm) { return cm.moveH(-1, "char"); }, + goCharRight: function (cm) { return cm.moveH(1, "char"); }, + goColumnLeft: function (cm) { return cm.moveH(-1, "column"); }, + goColumnRight: function (cm) { return cm.moveH(1, "column"); }, + goWordLeft: function (cm) { return cm.moveH(-1, "word"); }, + goGroupRight: function (cm) { return cm.moveH(1, "group"); }, + goGroupLeft: function (cm) { return cm.moveH(-1, "group"); }, + goWordRight: function (cm) { return cm.moveH(1, "word"); }, + delCharBefore: function (cm) { return cm.deleteH(-1, "char"); }, + delCharAfter: function (cm) { return cm.deleteH(1, "char"); }, + delWordBefore: function (cm) { return cm.deleteH(-1, "word"); }, + delWordAfter: function (cm) { return cm.deleteH(1, "word"); }, + delGroupBefore: function (cm) { return cm.deleteH(-1, "group"); }, + delGroupAfter: function (cm) { return cm.deleteH(1, "group"); }, + indentAuto: function (cm) { return cm.indentSelection("smart"); }, + indentMore: function (cm) { return cm.indentSelection("add"); }, + indentLess: function (cm) { return cm.indentSelection("subtract"); }, + insertTab: function (cm) { return cm.replaceSelection("\t"); }, + insertSoftTab: function (cm) { + var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize; + for (var i = 0; i < ranges.length; i++) { + var pos = ranges[i].from(); + var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize); + spaces.push(spaceStr(tabSize - col % tabSize)); + } + cm.replaceSelections(spaces); + }, + defaultTab: function (cm) { + if (cm.somethingSelected()) { cm.indentSelection("add"); } + else { cm.execCommand("insertTab"); } + }, + // Swap the two chars left and right of each selection's head. + // Move cursor behind the two swapped characters afterwards. + // + // Doesn't consider line feeds a character. + // Doesn't scan more than one line above to find a character. + // Doesn't do anything on an empty line. + // Doesn't do anything with non-empty selections. + transposeChars: function (cm) { return runInOp(cm, function () { + var ranges = cm.listSelections(), newSel = []; + for (var i = 0; i < ranges.length; i++) { + if (!ranges[i].empty()) { continue } + var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text; + if (line) { + if (cur.ch == line.length) { cur = new Pos(cur.line, cur.ch - 1); } + if (cur.ch > 0) { + cur = new Pos(cur.line, cur.ch + 1); + cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2), + Pos(cur.line, cur.ch - 2), cur, "+transpose"); + } else if (cur.line > cm.doc.first) { + var prev = getLine(cm.doc, cur.line - 1).text; + if (prev) { + cur = new Pos(cur.line, 1); + cm.replaceRange(line.charAt(0) + cm.doc.lineSeparator() + + prev.charAt(prev.length - 1), + Pos(cur.line - 1, prev.length - 1), cur, "+transpose"); + } + } + } + newSel.push(new Range(cur, cur)); + } + cm.setSelections(newSel); + }); }, + newlineAndIndent: function (cm) { return runInOp(cm, function () { + var sels = cm.listSelections(); + for (var i = sels.length - 1; i >= 0; i--) + { cm.replaceRange(cm.doc.lineSeparator(), sels[i].anchor, sels[i].head, "+input"); } + sels = cm.listSelections(); + for (var i$1 = 0; i$1 < sels.length; i$1++) + { cm.indentLine(sels[i$1].from().line, null, true); } + ensureCursorVisible(cm); + }); }, + openLine: function (cm) { return cm.replaceSelection("\n", "start"); }, + toggleOverwrite: function (cm) { return cm.toggleOverwrite(); } + }; -return CodeMirror; -}))); \ No newline at end of file + function lineStart(cm, lineN) { + var line = getLine(cm.doc, lineN); + var visual = visualLine(line); + if (visual != line) { lineN = lineNo(visual); } + return endOfLine(true, cm, visual, lineN, 1) + } + function lineEnd(cm, lineN) { + var line = getLine(cm.doc, lineN); + var visual = visualLineEnd(line); + if (visual != line) { lineN = lineNo(visual); } + return endOfLine(true, cm, line, lineN, -1) + } + function lineStartSmart(cm, pos) { + var start = lineStart(cm, pos.line); + var line = getLine(cm.doc, start.line); + var order = getOrder(line, cm.doc.direction); + if (!order || order[0].level == 0) { + var firstNonWS = Math.max(0, line.text.search(/\S/)); + var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch; + return Pos(start.line, inWS ? 0 : firstNonWS, start.sticky) + } + return start + } + + // Run a handler that was bound to a key. + function doHandleBinding(cm, bound, dropShift) { + if (typeof bound == "string") { + bound = commands[bound]; + if (!bound) { return false } + } + // Ensure previous input has been read, so that the handler sees a + // consistent view of the document + cm.display.input.ensurePolled(); + var prevShift = cm.display.shift, done = false; + try { + if (cm.isReadOnly()) { cm.state.suppressEdits = true; } + if (dropShift) { cm.display.shift = false; } + done = bound(cm) != Pass; + } finally { + cm.display.shift = prevShift; + cm.state.suppressEdits = false; + } + return done + } + + function lookupKeyForEditor(cm, name, handle) { + for (var i = 0; i < cm.state.keyMaps.length; i++) { + var result = lookupKey(name, cm.state.keyMaps[i], handle, cm); + if (result) { return result } + } + return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm)) + || lookupKey(name, cm.options.keyMap, handle, cm) + } + + // Note that, despite the name, this function is also used to check + // for bound mouse clicks. + + var stopSeq = new Delayed; + + function dispatchKey(cm, name, e, handle) { + var seq = cm.state.keySeq; + if (seq) { + if (isModifierKey(name)) { return "handled" } + if (/\'$/.test(name)) + { cm.state.keySeq = null; } + else + { stopSeq.set(50, function () { + if (cm.state.keySeq == seq) { + cm.state.keySeq = null; + cm.display.input.reset(); + } + }); } + if (dispatchKeyInner(cm, seq + " " + name, e, handle)) { return true } + } + return dispatchKeyInner(cm, name, e, handle) + } + + function dispatchKeyInner(cm, name, e, handle) { + var result = lookupKeyForEditor(cm, name, handle); + + if (result == "multi") + { cm.state.keySeq = name; } + if (result == "handled") + { signalLater(cm, "keyHandled", cm, name, e); } + + if (result == "handled" || result == "multi") { + e_preventDefault(e); + restartBlink(cm); + } + + return !!result + } + + // Handle a key from the keydown event. + function handleKeyBinding(cm, e) { + var name = keyName(e, true); + if (!name) { return false } + + if (e.shiftKey && !cm.state.keySeq) { + // First try to resolve full name (including 'Shift-'). Failing + // that, see if there is a cursor-motion command (starting with + // 'go') bound to the keyname without 'Shift-'. + return dispatchKey(cm, "Shift-" + name, e, function (b) { return doHandleBinding(cm, b, true); }) + || dispatchKey(cm, name, e, function (b) { + if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) + { return doHandleBinding(cm, b) } + }) + } else { + return dispatchKey(cm, name, e, function (b) { return doHandleBinding(cm, b); }) + } + } + + // Handle a key from the keypress event + function handleCharBinding(cm, e, ch) { + return dispatchKey(cm, "'" + ch + "'", e, function (b) { return doHandleBinding(cm, b, true); }) + } + + var lastStoppedKey = null; + function onKeyDown(e) { + var cm = this; + cm.curOp.focus = activeElt(); + if (signalDOMEvent(cm, e)) { return } + // IE does strange things with escape. + if (ie && ie_version < 11 && e.keyCode == 27) { e.returnValue = false; } + var code = e.keyCode; + cm.display.shift = code == 16 || e.shiftKey; + var handled = handleKeyBinding(cm, e); + if (presto) { + lastStoppedKey = handled ? code : null; + // Opera has no cut event... we try to at least catch the key combo + if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) + { cm.replaceSelection("", null, "cut"); } + } + + // Turn mouse into crosshair when Alt is held on Mac. + if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className)) + { showCrossHair(cm); } + } + + function showCrossHair(cm) { + var lineDiv = cm.display.lineDiv; + addClass(lineDiv, "CodeMirror-crosshair"); + + function up(e) { + if (e.keyCode == 18 || !e.altKey) { + rmClass(lineDiv, "CodeMirror-crosshair"); + off(document, "keyup", up); + off(document, "mouseover", up); + } + } + on(document, "keyup", up); + on(document, "mouseover", up); + } + + function onKeyUp(e) { + if (e.keyCode == 16) { this.doc.sel.shift = false; } + signalDOMEvent(this, e); + } + + function onKeyPress(e) { + var cm = this; + if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) { return } + var keyCode = e.keyCode, charCode = e.charCode; + if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return} + if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) { return } + var ch = String.fromCharCode(charCode == null ? keyCode : charCode); + // Some browsers fire keypress events for backspace + if (ch == "\x08") { return } + if (handleCharBinding(cm, e, ch)) { return } + cm.display.input.onKeyPress(e); + } + + var DOUBLECLICK_DELAY = 400; + + var PastClick = function(time, pos, button) { + this.time = time; + this.pos = pos; + this.button = button; + }; + + PastClick.prototype.compare = function (time, pos, button) { + return this.time + DOUBLECLICK_DELAY > time && + cmp(pos, this.pos) == 0 && button == this.button + }; + + var lastClick, lastDoubleClick; + function clickRepeat(pos, button) { + var now = +new Date; + if (lastDoubleClick && lastDoubleClick.compare(now, pos, button)) { + lastClick = lastDoubleClick = null; + return "triple" + } else if (lastClick && lastClick.compare(now, pos, button)) { + lastDoubleClick = new PastClick(now, pos, button); + lastClick = null; + return "double" + } else { + lastClick = new PastClick(now, pos, button); + lastDoubleClick = null; + return "single" + } + } + + // A mouse down can be a single click, double click, triple click, + // start of selection drag, start of text drag, new cursor + // (ctrl-click), rectangle drag (alt-drag), or xwin + // middle-click-paste. Or it might be a click on something we should + // not interfere with, such as a scrollbar or widget. + function onMouseDown(e) { + var cm = this, display = cm.display; + if (signalDOMEvent(cm, e) || display.activeTouch && display.input.supportsTouch()) { return } + display.input.ensurePolled(); + display.shift = e.shiftKey; + + if (eventInWidget(display, e)) { + if (!webkit) { + // Briefly turn off draggability, to allow widgets to do + // normal dragging things. + display.scroller.draggable = false; + setTimeout(function () { return display.scroller.draggable = true; }, 100); + } + return + } + if (clickInGutter(cm, e)) { return } + var pos = posFromMouse(cm, e), button = e_button(e), repeat = pos ? clickRepeat(pos, button) : "single"; + window.focus(); + + // #3261: make sure, that we're not starting a second selection + if (button == 1 && cm.state.selectingText) + { cm.state.selectingText(e); } + + if (pos && handleMappedButton(cm, button, pos, repeat, e)) { return } + + if (button == 1) { + if (pos) { leftButtonDown(cm, pos, repeat, e); } + else if (e_target(e) == display.scroller) { e_preventDefault(e); } + } else if (button == 2) { + if (pos) { extendSelection(cm.doc, pos); } + setTimeout(function () { return display.input.focus(); }, 20); + } else if (button == 3) { + if (captureRightClick) { cm.display.input.onContextMenu(e); } + else { delayBlurEvent(cm); } + } + } + + function handleMappedButton(cm, button, pos, repeat, event) { + var name = "Click"; + if (repeat == "double") { name = "Double" + name; } + else if (repeat == "triple") { name = "Triple" + name; } + name = (button == 1 ? "Left" : button == 2 ? "Middle" : "Right") + name; + + return dispatchKey(cm, addModifierNames(name, event), event, function (bound) { + if (typeof bound == "string") { bound = commands[bound]; } + if (!bound) { return false } + var done = false; + try { + if (cm.isReadOnly()) { cm.state.suppressEdits = true; } + done = bound(cm, pos) != Pass; + } finally { + cm.state.suppressEdits = false; + } + return done + }) + } + + function configureMouse(cm, repeat, event) { + var option = cm.getOption("configureMouse"); + var value = option ? option(cm, repeat, event) : {}; + if (value.unit == null) { + var rect = chromeOS ? event.shiftKey && event.metaKey : event.altKey; + value.unit = rect ? "rectangle" : repeat == "single" ? "char" : repeat == "double" ? "word" : "line"; + } + if (value.extend == null || cm.doc.extend) { value.extend = cm.doc.extend || event.shiftKey; } + if (value.addNew == null) { value.addNew = mac ? event.metaKey : event.ctrlKey; } + if (value.moveOnDrag == null) { value.moveOnDrag = !(mac ? event.altKey : event.ctrlKey); } + return value + } + + function leftButtonDown(cm, pos, repeat, event) { + if (ie) { setTimeout(bind(ensureFocus, cm), 0); } + else { cm.curOp.focus = activeElt(); } + + var behavior = configureMouse(cm, repeat, event); + + var sel = cm.doc.sel, contained; + if (cm.options.dragDrop && dragAndDrop && !cm.isReadOnly() && + repeat == "single" && (contained = sel.contains(pos)) > -1 && + (cmp((contained = sel.ranges[contained]).from(), pos) < 0 || pos.xRel > 0) && + (cmp(contained.to(), pos) > 0 || pos.xRel < 0)) + { leftButtonStartDrag(cm, event, pos, behavior); } + else + { leftButtonSelect(cm, event, pos, behavior); } + } + + // Start a text drag. When it ends, see if any dragging actually + // happen, and treat as a click if it didn't. + function leftButtonStartDrag(cm, event, pos, behavior) { + var display = cm.display, moved = false; + var dragEnd = operation(cm, function (e) { + if (webkit) { display.scroller.draggable = false; } + cm.state.draggingText = false; + off(display.wrapper.ownerDocument, "mouseup", dragEnd); + off(display.wrapper.ownerDocument, "mousemove", mouseMove); + off(display.scroller, "dragstart", dragStart); + off(display.scroller, "drop", dragEnd); + if (!moved) { + e_preventDefault(e); + if (!behavior.addNew) + { extendSelection(cm.doc, pos, null, null, behavior.extend); } + // Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081) + if (webkit || ie && ie_version == 9) + { setTimeout(function () {display.wrapper.ownerDocument.body.focus(); display.input.focus();}, 20); } + else + { display.input.focus(); } + } + }); + var mouseMove = function(e2) { + moved = moved || Math.abs(event.clientX - e2.clientX) + Math.abs(event.clientY - e2.clientY) >= 10; + }; + var dragStart = function () { return moved = true; }; + // Let the drag handler handle this. + if (webkit) { display.scroller.draggable = true; } + cm.state.draggingText = dragEnd; + dragEnd.copy = !behavior.moveOnDrag; + // IE's approach to draggable + if (display.scroller.dragDrop) { display.scroller.dragDrop(); } + on(display.wrapper.ownerDocument, "mouseup", dragEnd); + on(display.wrapper.ownerDocument, "mousemove", mouseMove); + on(display.scroller, "dragstart", dragStart); + on(display.scroller, "drop", dragEnd); + + delayBlurEvent(cm); + setTimeout(function () { return display.input.focus(); }, 20); + } + + function rangeForUnit(cm, pos, unit) { + if (unit == "char") { return new Range(pos, pos) } + if (unit == "word") { return cm.findWordAt(pos) } + if (unit == "line") { return new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))) } + var result = unit(cm, pos); + return new Range(result.from, result.to) + } + + // Normal selection, as opposed to text dragging. + function leftButtonSelect(cm, event, start, behavior) { + var display = cm.display, doc = cm.doc; + e_preventDefault(event); + + var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges; + if (behavior.addNew && !behavior.extend) { + ourIndex = doc.sel.contains(start); + if (ourIndex > -1) + { ourRange = ranges[ourIndex]; } + else + { ourRange = new Range(start, start); } + } else { + ourRange = doc.sel.primary(); + ourIndex = doc.sel.primIndex; + } + + if (behavior.unit == "rectangle") { + if (!behavior.addNew) { ourRange = new Range(start, start); } + start = posFromMouse(cm, event, true, true); + ourIndex = -1; + } else { + var range$$1 = rangeForUnit(cm, start, behavior.unit); + if (behavior.extend) + { ourRange = extendRange(ourRange, range$$1.anchor, range$$1.head, behavior.extend); } + else + { ourRange = range$$1; } + } + + if (!behavior.addNew) { + ourIndex = 0; + setSelection(doc, new Selection([ourRange], 0), sel_mouse); + startSel = doc.sel; + } else if (ourIndex == -1) { + ourIndex = ranges.length; + setSelection(doc, normalizeSelection(cm, ranges.concat([ourRange]), ourIndex), + {scroll: false, origin: "*mouse"}); + } else if (ranges.length > 1 && ranges[ourIndex].empty() && behavior.unit == "char" && !behavior.extend) { + setSelection(doc, normalizeSelection(cm, ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0), + {scroll: false, origin: "*mouse"}); + startSel = doc.sel; + } else { + replaceOneSelection(doc, ourIndex, ourRange, sel_mouse); + } + + var lastPos = start; + function extendTo(pos) { + if (cmp(lastPos, pos) == 0) { return } + lastPos = pos; + + if (behavior.unit == "rectangle") { + var ranges = [], tabSize = cm.options.tabSize; + var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize); + var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize); + var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol); + for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line)); + line <= end; line++) { + var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize); + if (left == right) + { ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))); } + else if (text.length > leftPos) + { ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))); } + } + if (!ranges.length) { ranges.push(new Range(start, start)); } + setSelection(doc, normalizeSelection(cm, startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex), + {origin: "*mouse", scroll: false}); + cm.scrollIntoView(pos); + } else { + var oldRange = ourRange; + var range$$1 = rangeForUnit(cm, pos, behavior.unit); + var anchor = oldRange.anchor, head; + if (cmp(range$$1.anchor, anchor) > 0) { + head = range$$1.head; + anchor = minPos(oldRange.from(), range$$1.anchor); + } else { + head = range$$1.anchor; + anchor = maxPos(oldRange.to(), range$$1.head); + } + var ranges$1 = startSel.ranges.slice(0); + ranges$1[ourIndex] = bidiSimplify(cm, new Range(clipPos(doc, anchor), head)); + setSelection(doc, normalizeSelection(cm, ranges$1, ourIndex), sel_mouse); + } + } + + var editorSize = display.wrapper.getBoundingClientRect(); + // Used to ensure timeout re-tries don't fire when another extend + // happened in the meantime (clearTimeout isn't reliable -- at + // least on Chrome, the timeouts still happen even when cleared, + // if the clear happens after their scheduled firing time). + var counter = 0; + + function extend(e) { + var curCount = ++counter; + var cur = posFromMouse(cm, e, true, behavior.unit == "rectangle"); + if (!cur) { return } + if (cmp(cur, lastPos) != 0) { + cm.curOp.focus = activeElt(); + extendTo(cur); + var visible = visibleLines(display, doc); + if (cur.line >= visible.to || cur.line < visible.from) + { setTimeout(operation(cm, function () {if (counter == curCount) { extend(e); }}), 150); } + } else { + var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0; + if (outside) { setTimeout(operation(cm, function () { + if (counter != curCount) { return } + display.scroller.scrollTop += outside; + extend(e); + }), 50); } + } + } + + function done(e) { + cm.state.selectingText = false; + counter = Infinity; + e_preventDefault(e); + display.input.focus(); + off(display.wrapper.ownerDocument, "mousemove", move); + off(display.wrapper.ownerDocument, "mouseup", up); + doc.history.lastSelOrigin = null; + } + + var move = operation(cm, function (e) { + if (e.buttons === 0 || !e_button(e)) { done(e); } + else { extend(e); } + }); + var up = operation(cm, done); + cm.state.selectingText = up; + on(display.wrapper.ownerDocument, "mousemove", move); + on(display.wrapper.ownerDocument, "mouseup", up); + } + + // Used when mouse-selecting to adjust the anchor to the proper side + // of a bidi jump depending on the visual position of the head. + function bidiSimplify(cm, range$$1) { + var anchor = range$$1.anchor; + var head = range$$1.head; + var anchorLine = getLine(cm.doc, anchor.line); + if (cmp(anchor, head) == 0 && anchor.sticky == head.sticky) { return range$$1 } + var order = getOrder(anchorLine); + if (!order) { return range$$1 } + var index = getBidiPartAt(order, anchor.ch, anchor.sticky), part = order[index]; + if (part.from != anchor.ch && part.to != anchor.ch) { return range$$1 } + var boundary = index + ((part.from == anchor.ch) == (part.level != 1) ? 0 : 1); + if (boundary == 0 || boundary == order.length) { return range$$1 } + + // Compute the relative visual position of the head compared to the + // anchor (<0 is to the left, >0 to the right) + var leftSide; + if (head.line != anchor.line) { + leftSide = (head.line - anchor.line) * (cm.doc.direction == "ltr" ? 1 : -1) > 0; + } else { + var headIndex = getBidiPartAt(order, head.ch, head.sticky); + var dir = headIndex - index || (head.ch - anchor.ch) * (part.level == 1 ? -1 : 1); + if (headIndex == boundary - 1 || headIndex == boundary) + { leftSide = dir < 0; } + else + { leftSide = dir > 0; } + } + + var usePart = order[boundary + (leftSide ? -1 : 0)]; + var from = leftSide == (usePart.level == 1); + var ch = from ? usePart.from : usePart.to, sticky = from ? "after" : "before"; + return anchor.ch == ch && anchor.sticky == sticky ? range$$1 : new Range(new Pos(anchor.line, ch, sticky), head) + } + + + // Determines whether an event happened in the gutter, and fires the + // handlers for the corresponding event. + function gutterEvent(cm, e, type, prevent) { + var mX, mY; + if (e.touches) { + mX = e.touches[0].clientX; + mY = e.touches[0].clientY; + } else { + try { mX = e.clientX; mY = e.clientY; } + catch(e) { return false } + } + if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) { return false } + if (prevent) { e_preventDefault(e); } + + var display = cm.display; + var lineBox = display.lineDiv.getBoundingClientRect(); + + if (mY > lineBox.bottom || !hasHandler(cm, type)) { return e_defaultPrevented(e) } + mY -= lineBox.top - display.viewOffset; + + for (var i = 0; i < cm.options.gutters.length; ++i) { + var g = display.gutters.childNodes[i]; + if (g && g.getBoundingClientRect().right >= mX) { + var line = lineAtHeight(cm.doc, mY); + var gutter = cm.options.gutters[i]; + signal(cm, type, cm, line, gutter, e); + return e_defaultPrevented(e) + } + } + } + + function clickInGutter(cm, e) { + return gutterEvent(cm, e, "gutterClick", true) + } + + // CONTEXT MENU HANDLING + + // To make the context menu work, we need to briefly unhide the + // textarea (making it as unobtrusive as possible) to let the + // right-click take effect on it. + function onContextMenu(cm, e) { + if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) { return } + if (signalDOMEvent(cm, e, "contextmenu")) { return } + if (!captureRightClick) { cm.display.input.onContextMenu(e); } + } + + function contextMenuInGutter(cm, e) { + if (!hasHandler(cm, "gutterContextMenu")) { return false } + return gutterEvent(cm, e, "gutterContextMenu", false) + } + + function themeChanged(cm) { + cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + + cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-"); + clearCaches(cm); + } + + var Init = {toString: function(){return "CodeMirror.Init"}}; + + var defaults = {}; + var optionHandlers = {}; + + function defineOptions(CodeMirror) { + var optionHandlers = CodeMirror.optionHandlers; + + function option(name, deflt, handle, notOnInit) { + CodeMirror.defaults[name] = deflt; + if (handle) { optionHandlers[name] = + notOnInit ? function (cm, val, old) {if (old != Init) { handle(cm, val, old); }} : handle; } + } + + CodeMirror.defineOption = option; + + // Passed to option handlers when there is no old value. + CodeMirror.Init = Init; + + // These two are, on init, called from the constructor because they + // have to be initialized before the editor can start at all. + option("value", "", function (cm, val) { return cm.setValue(val); }, true); + option("mode", null, function (cm, val) { + cm.doc.modeOption = val; + loadMode(cm); + }, true); + + option("indentUnit", 2, loadMode, true); + option("indentWithTabs", false); + option("smartIndent", true); + option("tabSize", 4, function (cm) { + resetModeState(cm); + clearCaches(cm); + regChange(cm); + }, true); + + option("lineSeparator", null, function (cm, val) { + cm.doc.lineSep = val; + if (!val) { return } + var newBreaks = [], lineNo = cm.doc.first; + cm.doc.iter(function (line) { + for (var pos = 0;;) { + var found = line.text.indexOf(val, pos); + if (found == -1) { break } + pos = found + val.length; + newBreaks.push(Pos(lineNo, found)); + } + lineNo++; + }); + for (var i = newBreaks.length - 1; i >= 0; i--) + { replaceRange(cm.doc, val, newBreaks[i], Pos(newBreaks[i].line, newBreaks[i].ch + val.length)); } + }); + option("specialChars", /[\u0000-\u001f\u007f-\u009f\u00ad\u061c\u200b-\u200f\u2028\u2029\ufeff]/g, function (cm, val, old) { + cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g"); + if (old != Init) { cm.refresh(); } + }); + option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function (cm) { return cm.refresh(); }, true); + option("electricChars", true); + option("inputStyle", mobile ? "contenteditable" : "textarea", function () { + throw new Error("inputStyle can not (yet) be changed in a running editor") // FIXME + }, true); + option("spellcheck", false, function (cm, val) { return cm.getInputField().spellcheck = val; }, true); + option("autocorrect", false, function (cm, val) { return cm.getInputField().autocorrect = val; }, true); + option("autocapitalize", false, function (cm, val) { return cm.getInputField().autocapitalize = val; }, true); + option("rtlMoveVisually", !windows); + option("wholeLineUpdateBefore", true); + + option("theme", "default", function (cm) { + themeChanged(cm); + guttersChanged(cm); + }, true); + option("keyMap", "default", function (cm, val, old) { + var next = getKeyMap(val); + var prev = old != Init && getKeyMap(old); + if (prev && prev.detach) { prev.detach(cm, next); } + if (next.attach) { next.attach(cm, prev || null); } + }); + option("extraKeys", null); + option("configureMouse", null); + + option("lineWrapping", false, wrappingChanged, true); + option("gutters", [], function (cm) { + setGuttersForLineNumbers(cm.options); + guttersChanged(cm); + }, true); + option("fixedGutter", true, function (cm, val) { + cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0"; + cm.refresh(); + }, true); + option("coverGutterNextToScrollbar", false, function (cm) { return updateScrollbars(cm); }, true); + option("scrollbarStyle", "native", function (cm) { + initScrollbars(cm); + updateScrollbars(cm); + cm.display.scrollbars.setScrollTop(cm.doc.scrollTop); + cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft); + }, true); + option("lineNumbers", false, function (cm) { + setGuttersForLineNumbers(cm.options); + guttersChanged(cm); + }, true); + option("firstLineNumber", 1, guttersChanged, true); + option("lineNumberFormatter", function (integer) { return integer; }, guttersChanged, true); + option("showCursorWhenSelecting", false, updateSelection, true); + + option("resetSelectionOnContextMenu", true); + option("lineWiseCopyCut", true); + option("pasteLinesPerSelection", true); + option("selectionsMayTouch", false); + + option("readOnly", false, function (cm, val) { + if (val == "nocursor") { + onBlur(cm); + cm.display.input.blur(); + } + cm.display.input.readOnlyChanged(val); + }); + option("disableInput", false, function (cm, val) {if (!val) { cm.display.input.reset(); }}, true); + option("dragDrop", true, dragDropChanged); + option("allowDropFileTypes", null); + + option("cursorBlinkRate", 530); + option("cursorScrollMargin", 0); + option("cursorHeight", 1, updateSelection, true); + option("singleCursorHeightPerLine", true, updateSelection, true); + option("workTime", 100); + option("workDelay", 100); + option("flattenSpans", true, resetModeState, true); + option("addModeClass", false, resetModeState, true); + option("pollInterval", 100); + option("undoDepth", 200, function (cm, val) { return cm.doc.history.undoDepth = val; }); + option("historyEventDelay", 1250); + option("viewportMargin", 10, function (cm) { return cm.refresh(); }, true); + option("maxHighlightLength", 10000, resetModeState, true); + option("moveInputWithCursor", true, function (cm, val) { + if (!val) { cm.display.input.resetPosition(); } + }); + + option("tabindex", null, function (cm, val) { return cm.display.input.getField().tabIndex = val || ""; }); + option("autofocus", null); + option("direction", "ltr", function (cm, val) { return cm.doc.setDirection(val); }, true); + option("phrases", null); + } + + function guttersChanged(cm) { + updateGutters(cm); + regChange(cm); + alignHorizontally(cm); + } + + function dragDropChanged(cm, value, old) { + var wasOn = old && old != Init; + if (!value != !wasOn) { + var funcs = cm.display.dragFunctions; + var toggle = value ? on : off; + toggle(cm.display.scroller, "dragstart", funcs.start); + toggle(cm.display.scroller, "dragenter", funcs.enter); + toggle(cm.display.scroller, "dragover", funcs.over); + toggle(cm.display.scroller, "dragleave", funcs.leave); + toggle(cm.display.scroller, "drop", funcs.drop); + } + } + + function wrappingChanged(cm) { + if (cm.options.lineWrapping) { + addClass(cm.display.wrapper, "CodeMirror-wrap"); + cm.display.sizer.style.minWidth = ""; + cm.display.sizerWidth = null; + } else { + rmClass(cm.display.wrapper, "CodeMirror-wrap"); + findMaxLine(cm); + } + estimateLineHeights(cm); + regChange(cm); + clearCaches(cm); + setTimeout(function () { return updateScrollbars(cm); }, 100); + } + + // A CodeMirror instance represents an editor. This is the object + // that user code is usually dealing with. + + function CodeMirror(place, options) { + var this$1 = this; + + if (!(this instanceof CodeMirror)) { return new CodeMirror(place, options) } + + this.options = options = options ? copyObj(options) : {}; + // Determine effective options based on given values and defaults. + copyObj(defaults, options, false); + setGuttersForLineNumbers(options); + + var doc = options.value; + if (typeof doc == "string") { doc = new Doc(doc, options.mode, null, options.lineSeparator, options.direction); } + else if (options.mode) { doc.modeOption = options.mode; } + this.doc = doc; + + var input = new CodeMirror.inputStyles[options.inputStyle](this); + var display = this.display = new Display(place, doc, input); + display.wrapper.CodeMirror = this; + updateGutters(this); + themeChanged(this); + if (options.lineWrapping) + { this.display.wrapper.className += " CodeMirror-wrap"; } + initScrollbars(this); + + this.state = { + keyMaps: [], // stores maps added by addKeyMap + overlays: [], // highlighting overlays, as added by addOverlay + modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info + overwrite: false, + delayingBlurEvent: false, + focused: false, + suppressEdits: false, // used to disable editing during key handlers when in readOnly mode + pasteIncoming: -1, cutIncoming: -1, // help recognize paste/cut edits in input.poll + selectingText: false, + draggingText: false, + highlight: new Delayed(), // stores highlight worker timeout + keySeq: null, // Unfinished key sequence + specialChars: null + }; + + if (options.autofocus && !mobile) { display.input.focus(); } + + // Override magic textarea content restore that IE sometimes does + // on our hidden textarea on reload + if (ie && ie_version < 11) { setTimeout(function () { return this$1.display.input.reset(true); }, 20); } + + registerEventHandlers(this); + ensureGlobalHandlers(); + + startOperation(this); + this.curOp.forceUpdate = true; + attachDoc(this, doc); + + if ((options.autofocus && !mobile) || this.hasFocus()) + { setTimeout(bind(onFocus, this), 20); } + else + { onBlur(this); } + + for (var opt in optionHandlers) { if (optionHandlers.hasOwnProperty(opt)) + { optionHandlers[opt](this$1, options[opt], Init); } } + maybeUpdateLineNumberWidth(this); + if (options.finishInit) { options.finishInit(this); } + for (var i = 0; i < initHooks.length; ++i) { initHooks[i](this$1); } + endOperation(this); + // Suppress optimizelegibility in Webkit, since it breaks text + // measuring on line wrapping boundaries. + if (webkit && options.lineWrapping && + getComputedStyle(display.lineDiv).textRendering == "optimizelegibility") + { display.lineDiv.style.textRendering = "auto"; } + } + + // The default configuration options. + CodeMirror.defaults = defaults; + // Functions to run when options are changed. + CodeMirror.optionHandlers = optionHandlers; + + // Attach the necessary event handlers when initializing the editor + function registerEventHandlers(cm) { + var d = cm.display; + on(d.scroller, "mousedown", operation(cm, onMouseDown)); + // Older IE's will not fire a second mousedown for a double click + if (ie && ie_version < 11) + { on(d.scroller, "dblclick", operation(cm, function (e) { + if (signalDOMEvent(cm, e)) { return } + var pos = posFromMouse(cm, e); + if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) { return } + e_preventDefault(e); + var word = cm.findWordAt(pos); + extendSelection(cm.doc, word.anchor, word.head); + })); } + else + { on(d.scroller, "dblclick", function (e) { return signalDOMEvent(cm, e) || e_preventDefault(e); }); } + // Some browsers fire contextmenu *after* opening the menu, at + // which point we can't mess with it anymore. Context menu is + // handled in onMouseDown for these browsers. + on(d.scroller, "contextmenu", function (e) { return onContextMenu(cm, e); }); + + // Used to suppress mouse event handling when a touch happens + var touchFinished, prevTouch = {end: 0}; + function finishTouch() { + if (d.activeTouch) { + touchFinished = setTimeout(function () { return d.activeTouch = null; }, 1000); + prevTouch = d.activeTouch; + prevTouch.end = +new Date; + } + } + function isMouseLikeTouchEvent(e) { + if (e.touches.length != 1) { return false } + var touch = e.touches[0]; + return touch.radiusX <= 1 && touch.radiusY <= 1 + } + function farAway(touch, other) { + if (other.left == null) { return true } + var dx = other.left - touch.left, dy = other.top - touch.top; + return dx * dx + dy * dy > 20 * 20 + } + on(d.scroller, "touchstart", function (e) { + if (!signalDOMEvent(cm, e) && !isMouseLikeTouchEvent(e) && !clickInGutter(cm, e)) { + d.input.ensurePolled(); + clearTimeout(touchFinished); + var now = +new Date; + d.activeTouch = {start: now, moved: false, + prev: now - prevTouch.end <= 300 ? prevTouch : null}; + if (e.touches.length == 1) { + d.activeTouch.left = e.touches[0].pageX; + d.activeTouch.top = e.touches[0].pageY; + } + } + }); + on(d.scroller, "touchmove", function () { + if (d.activeTouch) { d.activeTouch.moved = true; } + }); + on(d.scroller, "touchend", function (e) { + var touch = d.activeTouch; + if (touch && !eventInWidget(d, e) && touch.left != null && + !touch.moved && new Date - touch.start < 300) { + var pos = cm.coordsChar(d.activeTouch, "page"), range; + if (!touch.prev || farAway(touch, touch.prev)) // Single tap + { range = new Range(pos, pos); } + else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap + { range = cm.findWordAt(pos); } + else // Triple tap + { range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))); } + cm.setSelection(range.anchor, range.head); + cm.focus(); + e_preventDefault(e); + } + finishTouch(); + }); + on(d.scroller, "touchcancel", finishTouch); + + // Sync scrolling between fake scrollbars and real scrollable + // area, ensure viewport is updated when scrolling. + on(d.scroller, "scroll", function () { + if (d.scroller.clientHeight) { + updateScrollTop(cm, d.scroller.scrollTop); + setScrollLeft(cm, d.scroller.scrollLeft, true); + signal(cm, "scroll", cm); + } + }); + + // Listen to wheel events in order to try and update the viewport on time. + on(d.scroller, "mousewheel", function (e) { return onScrollWheel(cm, e); }); + on(d.scroller, "DOMMouseScroll", function (e) { return onScrollWheel(cm, e); }); + + // Prevent wrapper from ever scrolling + on(d.wrapper, "scroll", function () { return d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }); + + d.dragFunctions = { + enter: function (e) {if (!signalDOMEvent(cm, e)) { e_stop(e); }}, + over: function (e) {if (!signalDOMEvent(cm, e)) { onDragOver(cm, e); e_stop(e); }}, + start: function (e) { return onDragStart(cm, e); }, + drop: operation(cm, onDrop), + leave: function (e) {if (!signalDOMEvent(cm, e)) { clearDragCursor(cm); }} + }; + + var inp = d.input.getField(); + on(inp, "keyup", function (e) { return onKeyUp.call(cm, e); }); + on(inp, "keydown", operation(cm, onKeyDown)); + on(inp, "keypress", operation(cm, onKeyPress)); + on(inp, "focus", function (e) { return onFocus(cm, e); }); + on(inp, "blur", function (e) { return onBlur(cm, e); }); + } + + var initHooks = []; + CodeMirror.defineInitHook = function (f) { return initHooks.push(f); }; + + // Indent the given line. The how parameter can be "smart", + // "add"/null, "subtract", or "prev". When aggressive is false + // (typically set to true for forced single-line indents), empty + // lines are not indented, and places where the mode returns Pass + // are left alone. + function indentLine(cm, n, how, aggressive) { + var doc = cm.doc, state; + if (how == null) { how = "add"; } + if (how == "smart") { + // Fall back to "prev" when the mode doesn't have an indentation + // method. + if (!doc.mode.indent) { how = "prev"; } + else { state = getContextBefore(cm, n).state; } + } + + var tabSize = cm.options.tabSize; + var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize); + if (line.stateAfter) { line.stateAfter = null; } + var curSpaceString = line.text.match(/^\s*/)[0], indentation; + if (!aggressive && !/\S/.test(line.text)) { + indentation = 0; + how = "not"; + } else if (how == "smart") { + indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text); + if (indentation == Pass || indentation > 150) { + if (!aggressive) { return } + how = "prev"; + } + } + if (how == "prev") { + if (n > doc.first) { indentation = countColumn(getLine(doc, n-1).text, null, tabSize); } + else { indentation = 0; } + } else if (how == "add") { + indentation = curSpace + cm.options.indentUnit; + } else if (how == "subtract") { + indentation = curSpace - cm.options.indentUnit; + } else if (typeof how == "number") { + indentation = curSpace + how; + } + indentation = Math.max(0, indentation); + + var indentString = "", pos = 0; + if (cm.options.indentWithTabs) + { for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} } + if (pos < indentation) { indentString += spaceStr(indentation - pos); } + + if (indentString != curSpaceString) { + replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input"); + line.stateAfter = null; + return true + } else { + // Ensure that, if the cursor was in the whitespace at the start + // of the line, it is moved to the end of that space. + for (var i$1 = 0; i$1 < doc.sel.ranges.length; i$1++) { + var range = doc.sel.ranges[i$1]; + if (range.head.line == n && range.head.ch < curSpaceString.length) { + var pos$1 = Pos(n, curSpaceString.length); + replaceOneSelection(doc, i$1, new Range(pos$1, pos$1)); + break + } + } + } + } + + // This will be set to a {lineWise: bool, text: [string]} object, so + // that, when pasting, we know what kind of selections the copied + // text was made out of. + var lastCopied = null; + + function setLastCopied(newLastCopied) { + lastCopied = newLastCopied; + } + + function applyTextInput(cm, inserted, deleted, sel, origin) { + var doc = cm.doc; + cm.display.shift = false; + if (!sel) { sel = doc.sel; } + + var recent = +new Date - 200; + var paste = origin == "paste" || cm.state.pasteIncoming > recent; + var textLines = splitLinesAuto(inserted), multiPaste = null; + // When pasting N lines into N selections, insert one line per selection + if (paste && sel.ranges.length > 1) { + if (lastCopied && lastCopied.text.join("\n") == inserted) { + if (sel.ranges.length % lastCopied.text.length == 0) { + multiPaste = []; + for (var i = 0; i < lastCopied.text.length; i++) + { multiPaste.push(doc.splitLines(lastCopied.text[i])); } + } + } else if (textLines.length == sel.ranges.length && cm.options.pasteLinesPerSelection) { + multiPaste = map(textLines, function (l) { return [l]; }); + } + } + + var updateInput = cm.curOp.updateInput; + // Normal behavior is to insert the new text into every selection + for (var i$1 = sel.ranges.length - 1; i$1 >= 0; i$1--) { + var range$$1 = sel.ranges[i$1]; + var from = range$$1.from(), to = range$$1.to(); + if (range$$1.empty()) { + if (deleted && deleted > 0) // Handle deletion + { from = Pos(from.line, from.ch - deleted); } + else if (cm.state.overwrite && !paste) // Handle overwrite + { to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)); } + else if (paste && lastCopied && lastCopied.lineWise && lastCopied.text.join("\n") == inserted) + { from = to = Pos(from.line, 0); } + } + var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i$1 % multiPaste.length] : textLines, + origin: origin || (paste ? "paste" : cm.state.cutIncoming > recent ? "cut" : "+input")}; + makeChange(cm.doc, changeEvent); + signalLater(cm, "inputRead", cm, changeEvent); + } + if (inserted && !paste) + { triggerElectric(cm, inserted); } + + ensureCursorVisible(cm); + if (cm.curOp.updateInput < 2) { cm.curOp.updateInput = updateInput; } + cm.curOp.typing = true; + cm.state.pasteIncoming = cm.state.cutIncoming = -1; + } + + function handlePaste(e, cm) { + var pasted = e.clipboardData && e.clipboardData.getData("Text"); + if (pasted) { + e.preventDefault(); + if (!cm.isReadOnly() && !cm.options.disableInput) + { runInOp(cm, function () { return applyTextInput(cm, pasted, 0, null, "paste"); }); } + return true + } + } + + function triggerElectric(cm, inserted) { + // When an 'electric' character is inserted, immediately trigger a reindent + if (!cm.options.electricChars || !cm.options.smartIndent) { return } + var sel = cm.doc.sel; + + for (var i = sel.ranges.length - 1; i >= 0; i--) { + var range$$1 = sel.ranges[i]; + if (range$$1.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range$$1.head.line)) { continue } + var mode = cm.getModeAt(range$$1.head); + var indented = false; + if (mode.electricChars) { + for (var j = 0; j < mode.electricChars.length; j++) + { if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) { + indented = indentLine(cm, range$$1.head.line, "smart"); + break + } } + } else if (mode.electricInput) { + if (mode.electricInput.test(getLine(cm.doc, range$$1.head.line).text.slice(0, range$$1.head.ch))) + { indented = indentLine(cm, range$$1.head.line, "smart"); } + } + if (indented) { signalLater(cm, "electricInput", cm, range$$1.head.line); } + } + } + + function copyableRanges(cm) { + var text = [], ranges = []; + for (var i = 0; i < cm.doc.sel.ranges.length; i++) { + var line = cm.doc.sel.ranges[i].head.line; + var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)}; + ranges.push(lineRange); + text.push(cm.getRange(lineRange.anchor, lineRange.head)); + } + return {text: text, ranges: ranges} + } + + function disableBrowserMagic(field, spellcheck, autocorrect, autocapitalize) { + field.setAttribute("autocorrect", !!autocorrect); + field.setAttribute("autocapitalize", !!autocapitalize); + field.setAttribute("spellcheck", !!spellcheck); + } + + function hiddenTextarea() { + var te = elt("textarea", null, null, "position: absolute; bottom: -1em; padding: 0; width: 1px; height: 1em; outline: none"); + var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); + // The textarea is kept positioned near the cursor to prevent the + // fact that it'll be scrolled into view on input from scrolling + // our fake cursor out of view. On webkit, when wrap=off, paste is + // very slow. So make the area wide instead. + if (webkit) { te.style.width = "1000px"; } + else { te.setAttribute("wrap", "off"); } + // If border: 0; -- iOS fails to open keyboard (issue #1287) + if (ios) { te.style.border = "1px solid black"; } + disableBrowserMagic(te); + return div + } + + // The publicly visible API. Note that methodOp(f) means + // 'wrap f in an operation, performed on its `this` parameter'. + + // This is not the complete set of editor methods. Most of the + // methods defined on the Doc type are also injected into + // CodeMirror.prototype, for backwards compatibility and + // convenience. + + function addEditorMethods(CodeMirror) { + var optionHandlers = CodeMirror.optionHandlers; + + var helpers = CodeMirror.helpers = {}; + + CodeMirror.prototype = { + constructor: CodeMirror, + focus: function(){window.focus(); this.display.input.focus();}, + + setOption: function(option, value) { + var options = this.options, old = options[option]; + if (options[option] == value && option != "mode") { return } + options[option] = value; + if (optionHandlers.hasOwnProperty(option)) + { operation(this, optionHandlers[option])(this, value, old); } + signal(this, "optionChange", this, option); + }, + + getOption: function(option) {return this.options[option]}, + getDoc: function() {return this.doc}, + + addKeyMap: function(map$$1, bottom) { + this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map$$1)); + }, + removeKeyMap: function(map$$1) { + var maps = this.state.keyMaps; + for (var i = 0; i < maps.length; ++i) + { if (maps[i] == map$$1 || maps[i].name == map$$1) { + maps.splice(i, 1); + return true + } } + }, + + addOverlay: methodOp(function(spec, options) { + var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec); + if (mode.startState) { throw new Error("Overlays may not be stateful.") } + insertSorted(this.state.overlays, + {mode: mode, modeSpec: spec, opaque: options && options.opaque, + priority: (options && options.priority) || 0}, + function (overlay) { return overlay.priority; }); + this.state.modeGen++; + regChange(this); + }), + removeOverlay: methodOp(function(spec) { + var this$1 = this; + + var overlays = this.state.overlays; + for (var i = 0; i < overlays.length; ++i) { + var cur = overlays[i].modeSpec; + if (cur == spec || typeof spec == "string" && cur.name == spec) { + overlays.splice(i, 1); + this$1.state.modeGen++; + regChange(this$1); + return + } + } + }), + + indentLine: methodOp(function(n, dir, aggressive) { + if (typeof dir != "string" && typeof dir != "number") { + if (dir == null) { dir = this.options.smartIndent ? "smart" : "prev"; } + else { dir = dir ? "add" : "subtract"; } + } + if (isLine(this.doc, n)) { indentLine(this, n, dir, aggressive); } + }), + indentSelection: methodOp(function(how) { + var this$1 = this; + + var ranges = this.doc.sel.ranges, end = -1; + for (var i = 0; i < ranges.length; i++) { + var range$$1 = ranges[i]; + if (!range$$1.empty()) { + var from = range$$1.from(), to = range$$1.to(); + var start = Math.max(end, from.line); + end = Math.min(this$1.lastLine(), to.line - (to.ch ? 0 : 1)) + 1; + for (var j = start; j < end; ++j) + { indentLine(this$1, j, how); } + var newRanges = this$1.doc.sel.ranges; + if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0) + { replaceOneSelection(this$1.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll); } + } else if (range$$1.head.line > end) { + indentLine(this$1, range$$1.head.line, how, true); + end = range$$1.head.line; + if (i == this$1.doc.sel.primIndex) { ensureCursorVisible(this$1); } + } + } + }), + + // Fetch the parser token for a given character. Useful for hacks + // that want to inspect the mode state (say, for completion). + getTokenAt: function(pos, precise) { + return takeToken(this, pos, precise) + }, + + getLineTokens: function(line, precise) { + return takeToken(this, Pos(line), precise, true) + }, + + getTokenTypeAt: function(pos) { + pos = clipPos(this.doc, pos); + var styles = getLineStyles(this, getLine(this.doc, pos.line)); + var before = 0, after = (styles.length - 1) / 2, ch = pos.ch; + var type; + if (ch == 0) { type = styles[2]; } + else { for (;;) { + var mid = (before + after) >> 1; + if ((mid ? styles[mid * 2 - 1] : 0) >= ch) { after = mid; } + else if (styles[mid * 2 + 1] < ch) { before = mid + 1; } + else { type = styles[mid * 2 + 2]; break } + } } + var cut = type ? type.indexOf("overlay ") : -1; + return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1) + }, + + getModeAt: function(pos) { + var mode = this.doc.mode; + if (!mode.innerMode) { return mode } + return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode + }, + + getHelper: function(pos, type) { + return this.getHelpers(pos, type)[0] + }, + + getHelpers: function(pos, type) { + var this$1 = this; + + var found = []; + if (!helpers.hasOwnProperty(type)) { return found } + var help = helpers[type], mode = this.getModeAt(pos); + if (typeof mode[type] == "string") { + if (help[mode[type]]) { found.push(help[mode[type]]); } + } else if (mode[type]) { + for (var i = 0; i < mode[type].length; i++) { + var val = help[mode[type][i]]; + if (val) { found.push(val); } + } + } else if (mode.helperType && help[mode.helperType]) { + found.push(help[mode.helperType]); + } else if (help[mode.name]) { + found.push(help[mode.name]); + } + for (var i$1 = 0; i$1 < help._global.length; i$1++) { + var cur = help._global[i$1]; + if (cur.pred(mode, this$1) && indexOf(found, cur.val) == -1) + { found.push(cur.val); } + } + return found + }, + + getStateAfter: function(line, precise) { + var doc = this.doc; + line = clipLine(doc, line == null ? doc.first + doc.size - 1: line); + return getContextBefore(this, line + 1, precise).state + }, + + cursorCoords: function(start, mode) { + var pos, range$$1 = this.doc.sel.primary(); + if (start == null) { pos = range$$1.head; } + else if (typeof start == "object") { pos = clipPos(this.doc, start); } + else { pos = start ? range$$1.from() : range$$1.to(); } + return cursorCoords(this, pos, mode || "page") + }, + + charCoords: function(pos, mode) { + return charCoords(this, clipPos(this.doc, pos), mode || "page") + }, + + coordsChar: function(coords, mode) { + coords = fromCoordSystem(this, coords, mode || "page"); + return coordsChar(this, coords.left, coords.top) + }, + + lineAtHeight: function(height, mode) { + height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top; + return lineAtHeight(this.doc, height + this.display.viewOffset) + }, + heightAtLine: function(line, mode, includeWidgets) { + var end = false, lineObj; + if (typeof line == "number") { + var last = this.doc.first + this.doc.size - 1; + if (line < this.doc.first) { line = this.doc.first; } + else if (line > last) { line = last; end = true; } + lineObj = getLine(this.doc, line); + } else { + lineObj = line; + } + return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page", includeWidgets || end).top + + (end ? this.doc.height - heightAtLine(lineObj) : 0) + }, + + defaultTextHeight: function() { return textHeight(this.display) }, + defaultCharWidth: function() { return charWidth(this.display) }, + + getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo}}, + + addWidget: function(pos, node, scroll, vert, horiz) { + var display = this.display; + pos = cursorCoords(this, clipPos(this.doc, pos)); + var top = pos.bottom, left = pos.left; + node.style.position = "absolute"; + node.setAttribute("cm-ignore-events", "true"); + this.display.input.setUneditable(node); + display.sizer.appendChild(node); + if (vert == "over") { + top = pos.top; + } else if (vert == "above" || vert == "near") { + var vspace = Math.max(display.wrapper.clientHeight, this.doc.height), + hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth); + // Default to positioning above (if specified and possible); otherwise default to positioning below + if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight) + { top = pos.top - node.offsetHeight; } + else if (pos.bottom + node.offsetHeight <= vspace) + { top = pos.bottom; } + if (left + node.offsetWidth > hspace) + { left = hspace - node.offsetWidth; } + } + node.style.top = top + "px"; + node.style.left = node.style.right = ""; + if (horiz == "right") { + left = display.sizer.clientWidth - node.offsetWidth; + node.style.right = "0px"; + } else { + if (horiz == "left") { left = 0; } + else if (horiz == "middle") { left = (display.sizer.clientWidth - node.offsetWidth) / 2; } + node.style.left = left + "px"; + } + if (scroll) + { scrollIntoView(this, {left: left, top: top, right: left + node.offsetWidth, bottom: top + node.offsetHeight}); } + }, + + triggerOnKeyDown: methodOp(onKeyDown), + triggerOnKeyPress: methodOp(onKeyPress), + triggerOnKeyUp: onKeyUp, + triggerOnMouseDown: methodOp(onMouseDown), + + execCommand: function(cmd) { + if (commands.hasOwnProperty(cmd)) + { return commands[cmd].call(null, this) } + }, + + triggerElectric: methodOp(function(text) { triggerElectric(this, text); }), + + findPosH: function(from, amount, unit, visually) { + var this$1 = this; + + var dir = 1; + if (amount < 0) { dir = -1; amount = -amount; } + var cur = clipPos(this.doc, from); + for (var i = 0; i < amount; ++i) { + cur = findPosH(this$1.doc, cur, dir, unit, visually); + if (cur.hitSide) { break } + } + return cur + }, + + moveH: methodOp(function(dir, unit) { + var this$1 = this; + + this.extendSelectionsBy(function (range$$1) { + if (this$1.display.shift || this$1.doc.extend || range$$1.empty()) + { return findPosH(this$1.doc, range$$1.head, dir, unit, this$1.options.rtlMoveVisually) } + else + { return dir < 0 ? range$$1.from() : range$$1.to() } + }, sel_move); + }), + + deleteH: methodOp(function(dir, unit) { + var sel = this.doc.sel, doc = this.doc; + if (sel.somethingSelected()) + { doc.replaceSelection("", null, "+delete"); } + else + { deleteNearSelection(this, function (range$$1) { + var other = findPosH(doc, range$$1.head, dir, unit, false); + return dir < 0 ? {from: other, to: range$$1.head} : {from: range$$1.head, to: other} + }); } + }), + + findPosV: function(from, amount, unit, goalColumn) { + var this$1 = this; + + var dir = 1, x = goalColumn; + if (amount < 0) { dir = -1; amount = -amount; } + var cur = clipPos(this.doc, from); + for (var i = 0; i < amount; ++i) { + var coords = cursorCoords(this$1, cur, "div"); + if (x == null) { x = coords.left; } + else { coords.left = x; } + cur = findPosV(this$1, coords, dir, unit); + if (cur.hitSide) { break } + } + return cur + }, + + moveV: methodOp(function(dir, unit) { + var this$1 = this; + + var doc = this.doc, goals = []; + var collapse = !this.display.shift && !doc.extend && doc.sel.somethingSelected(); + doc.extendSelectionsBy(function (range$$1) { + if (collapse) + { return dir < 0 ? range$$1.from() : range$$1.to() } + var headPos = cursorCoords(this$1, range$$1.head, "div"); + if (range$$1.goalColumn != null) { headPos.left = range$$1.goalColumn; } + goals.push(headPos.left); + var pos = findPosV(this$1, headPos, dir, unit); + if (unit == "page" && range$$1 == doc.sel.primary()) + { addToScrollTop(this$1, charCoords(this$1, pos, "div").top - headPos.top); } + return pos + }, sel_move); + if (goals.length) { for (var i = 0; i < doc.sel.ranges.length; i++) + { doc.sel.ranges[i].goalColumn = goals[i]; } } + }), + + // Find the word at the given position (as returned by coordsChar). + findWordAt: function(pos) { + var doc = this.doc, line = getLine(doc, pos.line).text; + var start = pos.ch, end = pos.ch; + if (line) { + var helper = this.getHelper(pos, "wordChars"); + if ((pos.sticky == "before" || end == line.length) && start) { --start; } else { ++end; } + var startChar = line.charAt(start); + var check = isWordChar(startChar, helper) + ? function (ch) { return isWordChar(ch, helper); } + : /\s/.test(startChar) ? function (ch) { return /\s/.test(ch); } + : function (ch) { return (!/\s/.test(ch) && !isWordChar(ch)); }; + while (start > 0 && check(line.charAt(start - 1))) { --start; } + while (end < line.length && check(line.charAt(end))) { ++end; } + } + return new Range(Pos(pos.line, start), Pos(pos.line, end)) + }, + + toggleOverwrite: function(value) { + if (value != null && value == this.state.overwrite) { return } + if (this.state.overwrite = !this.state.overwrite) + { addClass(this.display.cursorDiv, "CodeMirror-overwrite"); } + else + { rmClass(this.display.cursorDiv, "CodeMirror-overwrite"); } + + signal(this, "overwriteToggle", this, this.state.overwrite); + }, + hasFocus: function() { return this.display.input.getField() == activeElt() }, + isReadOnly: function() { return !!(this.options.readOnly || this.doc.cantEdit) }, + + scrollTo: methodOp(function (x, y) { scrollToCoords(this, x, y); }), + getScrollInfo: function() { + var scroller = this.display.scroller; + return {left: scroller.scrollLeft, top: scroller.scrollTop, + height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight, + width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth, + clientHeight: displayHeight(this), clientWidth: displayWidth(this)} + }, + + scrollIntoView: methodOp(function(range$$1, margin) { + if (range$$1 == null) { + range$$1 = {from: this.doc.sel.primary().head, to: null}; + if (margin == null) { margin = this.options.cursorScrollMargin; } + } else if (typeof range$$1 == "number") { + range$$1 = {from: Pos(range$$1, 0), to: null}; + } else if (range$$1.from == null) { + range$$1 = {from: range$$1, to: null}; + } + if (!range$$1.to) { range$$1.to = range$$1.from; } + range$$1.margin = margin || 0; + + if (range$$1.from.line != null) { + scrollToRange(this, range$$1); + } else { + scrollToCoordsRange(this, range$$1.from, range$$1.to, range$$1.margin); + } + }), + + setSize: methodOp(function(width, height) { + var this$1 = this; + + var interpret = function (val) { return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; }; + if (width != null) { this.display.wrapper.style.width = interpret(width); } + if (height != null) { this.display.wrapper.style.height = interpret(height); } + if (this.options.lineWrapping) { clearLineMeasurementCache(this); } + var lineNo$$1 = this.display.viewFrom; + this.doc.iter(lineNo$$1, this.display.viewTo, function (line) { + if (line.widgets) { for (var i = 0; i < line.widgets.length; i++) + { if (line.widgets[i].noHScroll) { regLineChange(this$1, lineNo$$1, "widget"); break } } } + ++lineNo$$1; + }); + this.curOp.forceUpdate = true; + signal(this, "refresh", this); + }), + + operation: function(f){return runInOp(this, f)}, + startOperation: function(){return startOperation(this)}, + endOperation: function(){return endOperation(this)}, + + refresh: methodOp(function() { + var oldHeight = this.display.cachedTextHeight; + regChange(this); + this.curOp.forceUpdate = true; + clearCaches(this); + scrollToCoords(this, this.doc.scrollLeft, this.doc.scrollTop); + updateGutterSpace(this); + if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5) + { estimateLineHeights(this); } + signal(this, "refresh", this); + }), + + swapDoc: methodOp(function(doc) { + var old = this.doc; + old.cm = null; + attachDoc(this, doc); + clearCaches(this); + this.display.input.reset(); + scrollToCoords(this, doc.scrollLeft, doc.scrollTop); + this.curOp.forceScroll = true; + signalLater(this, "swapDoc", this, old); + return old + }), + + phrase: function(phraseText) { + var phrases = this.options.phrases; + return phrases && Object.prototype.hasOwnProperty.call(phrases, phraseText) ? phrases[phraseText] : phraseText + }, + + getInputField: function(){return this.display.input.getField()}, + getWrapperElement: function(){return this.display.wrapper}, + getScrollerElement: function(){return this.display.scroller}, + getGutterElement: function(){return this.display.gutters} + }; + eventMixin(CodeMirror); + + CodeMirror.registerHelper = function(type, name, value) { + if (!helpers.hasOwnProperty(type)) { helpers[type] = CodeMirror[type] = {_global: []}; } + helpers[type][name] = value; + }; + CodeMirror.registerGlobalHelper = function(type, name, predicate, value) { + CodeMirror.registerHelper(type, name, value); + helpers[type]._global.push({pred: predicate, val: value}); + }; + } + + // Used for horizontal relative motion. Dir is -1 or 1 (left or + // right), unit can be "char", "column" (like char, but doesn't + // cross line boundaries), "word" (across next word), or "group" (to + // the start of next group of word or non-word-non-whitespace + // chars). The visually param controls whether, in right-to-left + // text, direction 1 means to move towards the next index in the + // string, or towards the character to the right of the current + // position. The resulting position will have a hitSide=true + // property if it reached the end of the document. + function findPosH(doc, pos, dir, unit, visually) { + var oldPos = pos; + var origDir = dir; + var lineObj = getLine(doc, pos.line); + function findNextLine() { + var l = pos.line + dir; + if (l < doc.first || l >= doc.first + doc.size) { return false } + pos = new Pos(l, pos.ch, pos.sticky); + return lineObj = getLine(doc, l) + } + function moveOnce(boundToLine) { + var next; + if (visually) { + next = moveVisually(doc.cm, lineObj, pos, dir); + } else { + next = moveLogically(lineObj, pos, dir); + } + if (next == null) { + if (!boundToLine && findNextLine()) + { pos = endOfLine(visually, doc.cm, lineObj, pos.line, dir); } + else + { return false } + } else { + pos = next; + } + return true + } + + if (unit == "char") { + moveOnce(); + } else if (unit == "column") { + moveOnce(true); + } else if (unit == "word" || unit == "group") { + var sawType = null, group = unit == "group"; + var helper = doc.cm && doc.cm.getHelper(pos, "wordChars"); + for (var first = true;; first = false) { + if (dir < 0 && !moveOnce(!first)) { break } + var cur = lineObj.text.charAt(pos.ch) || "\n"; + var type = isWordChar(cur, helper) ? "w" + : group && cur == "\n" ? "n" + : !group || /\s/.test(cur) ? null + : "p"; + if (group && !first && !type) { type = "s"; } + if (sawType && sawType != type) { + if (dir < 0) {dir = 1; moveOnce(); pos.sticky = "after";} + break + } + + if (type) { sawType = type; } + if (dir > 0 && !moveOnce(!first)) { break } + } + } + var result = skipAtomic(doc, pos, oldPos, origDir, true); + if (equalCursorPos(oldPos, result)) { result.hitSide = true; } + return result + } + + // For relative vertical movement. Dir may be -1 or 1. Unit can be + // "page" or "line". The resulting position will have a hitSide=true + // property if it reached the end of the document. + function findPosV(cm, pos, dir, unit) { + var doc = cm.doc, x = pos.left, y; + if (unit == "page") { + var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight); + var moveAmount = Math.max(pageSize - .5 * textHeight(cm.display), 3); + y = (dir > 0 ? pos.bottom : pos.top) + dir * moveAmount; + + } else if (unit == "line") { + y = dir > 0 ? pos.bottom + 3 : pos.top - 3; + } + var target; + for (;;) { + target = coordsChar(cm, x, y); + if (!target.outside) { break } + if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break } + y += dir * 5; + } + return target + } + + // CONTENTEDITABLE INPUT STYLE + + var ContentEditableInput = function(cm) { + this.cm = cm; + this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null; + this.polling = new Delayed(); + this.composing = null; + this.gracePeriod = false; + this.readDOMTimeout = null; + }; + + ContentEditableInput.prototype.init = function (display) { + var this$1 = this; + + var input = this, cm = input.cm; + var div = input.div = display.lineDiv; + disableBrowserMagic(div, cm.options.spellcheck, cm.options.autocorrect, cm.options.autocapitalize); + + on(div, "paste", function (e) { + if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return } + // IE doesn't fire input events, so we schedule a read for the pasted content in this way + if (ie_version <= 11) { setTimeout(operation(cm, function () { return this$1.updateFromDOM(); }), 20); } + }); + + on(div, "compositionstart", function (e) { + this$1.composing = {data: e.data, done: false}; + }); + on(div, "compositionupdate", function (e) { + if (!this$1.composing) { this$1.composing = {data: e.data, done: false}; } + }); + on(div, "compositionend", function (e) { + if (this$1.composing) { + if (e.data != this$1.composing.data) { this$1.readFromDOMSoon(); } + this$1.composing.done = true; + } + }); + + on(div, "touchstart", function () { return input.forceCompositionEnd(); }); + + on(div, "input", function () { + if (!this$1.composing) { this$1.readFromDOMSoon(); } + }); + + function onCopyCut(e) { + if (signalDOMEvent(cm, e)) { return } + if (cm.somethingSelected()) { + setLastCopied({lineWise: false, text: cm.getSelections()}); + if (e.type == "cut") { cm.replaceSelection("", null, "cut"); } + } else if (!cm.options.lineWiseCopyCut) { + return + } else { + var ranges = copyableRanges(cm); + setLastCopied({lineWise: true, text: ranges.text}); + if (e.type == "cut") { + cm.operation(function () { + cm.setSelections(ranges.ranges, 0, sel_dontScroll); + cm.replaceSelection("", null, "cut"); + }); + } + } + if (e.clipboardData) { + e.clipboardData.clearData(); + var content = lastCopied.text.join("\n"); + // iOS exposes the clipboard API, but seems to discard content inserted into it + e.clipboardData.setData("Text", content); + if (e.clipboardData.getData("Text") == content) { + e.preventDefault(); + return + } + } + // Old-fashioned briefly-focus-a-textarea hack + var kludge = hiddenTextarea(), te = kludge.firstChild; + cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild); + te.value = lastCopied.text.join("\n"); + var hadFocus = document.activeElement; + selectInput(te); + setTimeout(function () { + cm.display.lineSpace.removeChild(kludge); + hadFocus.focus(); + if (hadFocus == div) { input.showPrimarySelection(); } + }, 50); + } + on(div, "copy", onCopyCut); + on(div, "cut", onCopyCut); + }; + + ContentEditableInput.prototype.prepareSelection = function () { + var result = prepareSelection(this.cm, false); + result.focus = this.cm.state.focused; + return result + }; + + ContentEditableInput.prototype.showSelection = function (info, takeFocus) { + if (!info || !this.cm.display.view.length) { return } + if (info.focus || takeFocus) { this.showPrimarySelection(); } + this.showMultipleSelections(info); + }; + + ContentEditableInput.prototype.getSelection = function () { + return this.cm.display.wrapper.ownerDocument.getSelection() + }; + + ContentEditableInput.prototype.showPrimarySelection = function () { + var sel = this.getSelection(), cm = this.cm, prim = cm.doc.sel.primary(); + var from = prim.from(), to = prim.to(); + + if (cm.display.viewTo == cm.display.viewFrom || from.line >= cm.display.viewTo || to.line < cm.display.viewFrom) { + sel.removeAllRanges(); + return + } + + var curAnchor = domToPos(cm, sel.anchorNode, sel.anchorOffset); + var curFocus = domToPos(cm, sel.focusNode, sel.focusOffset); + if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad && + cmp(minPos(curAnchor, curFocus), from) == 0 && + cmp(maxPos(curAnchor, curFocus), to) == 0) + { return } + + var view = cm.display.view; + var start = (from.line >= cm.display.viewFrom && posToDOM(cm, from)) || + {node: view[0].measure.map[2], offset: 0}; + var end = to.line < cm.display.viewTo && posToDOM(cm, to); + if (!end) { + var measure = view[view.length - 1].measure; + var map$$1 = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map; + end = {node: map$$1[map$$1.length - 1], offset: map$$1[map$$1.length - 2] - map$$1[map$$1.length - 3]}; + } + + if (!start || !end) { + sel.removeAllRanges(); + return + } + + var old = sel.rangeCount && sel.getRangeAt(0), rng; + try { rng = range(start.node, start.offset, end.offset, end.node); } + catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible + if (rng) { + if (!gecko && cm.state.focused) { + sel.collapse(start.node, start.offset); + if (!rng.collapsed) { + sel.removeAllRanges(); + sel.addRange(rng); + } + } else { + sel.removeAllRanges(); + sel.addRange(rng); + } + if (old && sel.anchorNode == null) { sel.addRange(old); } + else if (gecko) { this.startGracePeriod(); } + } + this.rememberSelection(); + }; + + ContentEditableInput.prototype.startGracePeriod = function () { + var this$1 = this; + + clearTimeout(this.gracePeriod); + this.gracePeriod = setTimeout(function () { + this$1.gracePeriod = false; + if (this$1.selectionChanged()) + { this$1.cm.operation(function () { return this$1.cm.curOp.selectionChanged = true; }); } + }, 20); + }; + + ContentEditableInput.prototype.showMultipleSelections = function (info) { + removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors); + removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection); + }; + + ContentEditableInput.prototype.rememberSelection = function () { + var sel = this.getSelection(); + this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset; + this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset; + }; + + ContentEditableInput.prototype.selectionInEditor = function () { + var sel = this.getSelection(); + if (!sel.rangeCount) { return false } + var node = sel.getRangeAt(0).commonAncestorContainer; + return contains(this.div, node) + }; + + ContentEditableInput.prototype.focus = function () { + if (this.cm.options.readOnly != "nocursor") { + if (!this.selectionInEditor()) + { this.showSelection(this.prepareSelection(), true); } + this.div.focus(); + } + }; + ContentEditableInput.prototype.blur = function () { this.div.blur(); }; + ContentEditableInput.prototype.getField = function () { return this.div }; + + ContentEditableInput.prototype.supportsTouch = function () { return true }; + + ContentEditableInput.prototype.receivedFocus = function () { + var input = this; + if (this.selectionInEditor()) + { this.pollSelection(); } + else + { runInOp(this.cm, function () { return input.cm.curOp.selectionChanged = true; }); } + + function poll() { + if (input.cm.state.focused) { + input.pollSelection(); + input.polling.set(input.cm.options.pollInterval, poll); + } + } + this.polling.set(this.cm.options.pollInterval, poll); + }; + + ContentEditableInput.prototype.selectionChanged = function () { + var sel = this.getSelection(); + return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset || + sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset + }; + + ContentEditableInput.prototype.pollSelection = function () { + if (this.readDOMTimeout != null || this.gracePeriod || !this.selectionChanged()) { return } + var sel = this.getSelection(), cm = this.cm; + // On Android Chrome (version 56, at least), backspacing into an + // uneditable block element will put the cursor in that element, + // and then, because it's not editable, hide the virtual keyboard. + // Because Android doesn't allow us to actually detect backspace + // presses in a sane way, this code checks for when that happens + // and simulates a backspace press in this case. + if (android && chrome && this.cm.options.gutters.length && isInGutter(sel.anchorNode)) { + this.cm.triggerOnKeyDown({type: "keydown", keyCode: 8, preventDefault: Math.abs}); + this.blur(); + this.focus(); + return + } + if (this.composing) { return } + this.rememberSelection(); + var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset); + var head = domToPos(cm, sel.focusNode, sel.focusOffset); + if (anchor && head) { runInOp(cm, function () { + setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll); + if (anchor.bad || head.bad) { cm.curOp.selectionChanged = true; } + }); } + }; + + ContentEditableInput.prototype.pollContent = function () { + if (this.readDOMTimeout != null) { + clearTimeout(this.readDOMTimeout); + this.readDOMTimeout = null; + } + + var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary(); + var from = sel.from(), to = sel.to(); + if (from.ch == 0 && from.line > cm.firstLine()) + { from = Pos(from.line - 1, getLine(cm.doc, from.line - 1).length); } + if (to.ch == getLine(cm.doc, to.line).text.length && to.line < cm.lastLine()) + { to = Pos(to.line + 1, 0); } + if (from.line < display.viewFrom || to.line > display.viewTo - 1) { return false } + + var fromIndex, fromLine, fromNode; + if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) { + fromLine = lineNo(display.view[0].line); + fromNode = display.view[0].node; + } else { + fromLine = lineNo(display.view[fromIndex].line); + fromNode = display.view[fromIndex - 1].node.nextSibling; + } + var toIndex = findViewIndex(cm, to.line); + var toLine, toNode; + if (toIndex == display.view.length - 1) { + toLine = display.viewTo - 1; + toNode = display.lineDiv.lastChild; + } else { + toLine = lineNo(display.view[toIndex + 1].line) - 1; + toNode = display.view[toIndex + 1].node.previousSibling; + } + + if (!fromNode) { return false } + var newText = cm.doc.splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine)); + var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length)); + while (newText.length > 1 && oldText.length > 1) { + if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; } + else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; } + else { break } + } + + var cutFront = 0, cutEnd = 0; + var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length); + while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront)) + { ++cutFront; } + var newBot = lst(newText), oldBot = lst(oldText); + var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0), + oldBot.length - (oldText.length == 1 ? cutFront : 0)); + while (cutEnd < maxCutEnd && + newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) + { ++cutEnd; } + // Try to move start of change to start of selection if ambiguous + if (newText.length == 1 && oldText.length == 1 && fromLine == from.line) { + while (cutFront && cutFront > from.ch && + newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) { + cutFront--; + cutEnd++; + } + } + + newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd).replace(/^\u200b+/, ""); + newText[0] = newText[0].slice(cutFront).replace(/\u200b+$/, ""); + + var chFrom = Pos(fromLine, cutFront); + var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0); + if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) { + replaceRange(cm.doc, newText, chFrom, chTo, "+input"); + return true + } + }; + + ContentEditableInput.prototype.ensurePolled = function () { + this.forceCompositionEnd(); + }; + ContentEditableInput.prototype.reset = function () { + this.forceCompositionEnd(); + }; + ContentEditableInput.prototype.forceCompositionEnd = function () { + if (!this.composing) { return } + clearTimeout(this.readDOMTimeout); + this.composing = null; + this.updateFromDOM(); + this.div.blur(); + this.div.focus(); + }; + ContentEditableInput.prototype.readFromDOMSoon = function () { + var this$1 = this; + + if (this.readDOMTimeout != null) { return } + this.readDOMTimeout = setTimeout(function () { + this$1.readDOMTimeout = null; + if (this$1.composing) { + if (this$1.composing.done) { this$1.composing = null; } + else { return } + } + this$1.updateFromDOM(); + }, 80); + }; + + ContentEditableInput.prototype.updateFromDOM = function () { + var this$1 = this; + + if (this.cm.isReadOnly() || !this.pollContent()) + { runInOp(this.cm, function () { return regChange(this$1.cm); }); } + }; + + ContentEditableInput.prototype.setUneditable = function (node) { + node.contentEditable = "false"; + }; + + ContentEditableInput.prototype.onKeyPress = function (e) { + if (e.charCode == 0 || this.composing) { return } + e.preventDefault(); + if (!this.cm.isReadOnly()) + { operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0); } + }; + + ContentEditableInput.prototype.readOnlyChanged = function (val) { + this.div.contentEditable = String(val != "nocursor"); + }; + + ContentEditableInput.prototype.onContextMenu = function () {}; + ContentEditableInput.prototype.resetPosition = function () {}; + + ContentEditableInput.prototype.needsContentAttribute = true; + + function posToDOM(cm, pos) { + var view = findViewForLine(cm, pos.line); + if (!view || view.hidden) { return null } + var line = getLine(cm.doc, pos.line); + var info = mapFromLineView(view, line, pos.line); + + var order = getOrder(line, cm.doc.direction), side = "left"; + if (order) { + var partPos = getBidiPartAt(order, pos.ch); + side = partPos % 2 ? "right" : "left"; + } + var result = nodeAndOffsetInLineMap(info.map, pos.ch, side); + result.offset = result.collapse == "right" ? result.end : result.start; + return result + } + + function isInGutter(node) { + for (var scan = node; scan; scan = scan.parentNode) + { if (/CodeMirror-gutter-wrapper/.test(scan.className)) { return true } } + return false + } + + function badPos(pos, bad) { if (bad) { pos.bad = true; } return pos } + + function domTextBetween(cm, from, to, fromLine, toLine) { + var text = "", closing = false, lineSep = cm.doc.lineSeparator(), extraLinebreak = false; + function recognizeMarker(id) { return function (marker) { return marker.id == id; } } + function close() { + if (closing) { + text += lineSep; + if (extraLinebreak) { text += lineSep; } + closing = extraLinebreak = false; + } + } + function addText(str) { + if (str) { + close(); + text += str; + } + } + function walk(node) { + if (node.nodeType == 1) { + var cmText = node.getAttribute("cm-text"); + if (cmText) { + addText(cmText); + return + } + var markerID = node.getAttribute("cm-marker"), range$$1; + if (markerID) { + var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID)); + if (found.length && (range$$1 = found[0].find(0))) + { addText(getBetween(cm.doc, range$$1.from, range$$1.to).join(lineSep)); } + return + } + if (node.getAttribute("contenteditable") == "false") { return } + var isBlock = /^(pre|div|p|li|table|br)$/i.test(node.nodeName); + if (!/^br$/i.test(node.nodeName) && node.textContent.length == 0) { return } + + if (isBlock) { close(); } + for (var i = 0; i < node.childNodes.length; i++) + { walk(node.childNodes[i]); } + + if (/^(pre|p)$/i.test(node.nodeName)) { extraLinebreak = true; } + if (isBlock) { closing = true; } + } else if (node.nodeType == 3) { + addText(node.nodeValue.replace(/\u200b/g, "").replace(/\u00a0/g, " ")); + } + } + for (;;) { + walk(from); + if (from == to) { break } + from = from.nextSibling; + extraLinebreak = false; + } + return text + } + + function domToPos(cm, node, offset) { + var lineNode; + if (node == cm.display.lineDiv) { + lineNode = cm.display.lineDiv.childNodes[offset]; + if (!lineNode) { return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true) } + node = null; offset = 0; + } else { + for (lineNode = node;; lineNode = lineNode.parentNode) { + if (!lineNode || lineNode == cm.display.lineDiv) { return null } + if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) { break } + } + } + for (var i = 0; i < cm.display.view.length; i++) { + var lineView = cm.display.view[i]; + if (lineView.node == lineNode) + { return locateNodeInLineView(lineView, node, offset) } + } + } + + function locateNodeInLineView(lineView, node, offset) { + var wrapper = lineView.text.firstChild, bad = false; + if (!node || !contains(wrapper, node)) { return badPos(Pos(lineNo(lineView.line), 0), true) } + if (node == wrapper) { + bad = true; + node = wrapper.childNodes[offset]; + offset = 0; + if (!node) { + var line = lineView.rest ? lst(lineView.rest) : lineView.line; + return badPos(Pos(lineNo(line), line.text.length), bad) + } + } + + var textNode = node.nodeType == 3 ? node : null, topNode = node; + if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) { + textNode = node.firstChild; + if (offset) { offset = textNode.nodeValue.length; } + } + while (topNode.parentNode != wrapper) { topNode = topNode.parentNode; } + var measure = lineView.measure, maps = measure.maps; + + function find(textNode, topNode, offset) { + for (var i = -1; i < (maps ? maps.length : 0); i++) { + var map$$1 = i < 0 ? measure.map : maps[i]; + for (var j = 0; j < map$$1.length; j += 3) { + var curNode = map$$1[j + 2]; + if (curNode == textNode || curNode == topNode) { + var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]); + var ch = map$$1[j] + offset; + if (offset < 0 || curNode != textNode) { ch = map$$1[j + (offset ? 1 : 0)]; } + return Pos(line, ch) + } + } + } + } + var found = find(textNode, topNode, offset); + if (found) { return badPos(found, bad) } + + // FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems + for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) { + found = find(after, after.firstChild, 0); + if (found) + { return badPos(Pos(found.line, found.ch - dist), bad) } + else + { dist += after.textContent.length; } + } + for (var before = topNode.previousSibling, dist$1 = offset; before; before = before.previousSibling) { + found = find(before, before.firstChild, -1); + if (found) + { return badPos(Pos(found.line, found.ch + dist$1), bad) } + else + { dist$1 += before.textContent.length; } + } + } + + // TEXTAREA INPUT STYLE + + var TextareaInput = function(cm) { + this.cm = cm; + // See input.poll and input.reset + this.prevInput = ""; + + // Flag that indicates whether we expect input to appear real soon + // now (after some event like 'keypress' or 'input') and are + // polling intensively. + this.pollingFast = false; + // Self-resetting timeout for the poller + this.polling = new Delayed(); + // Used to work around IE issue with selection being forgotten when focus moves away from textarea + this.hasSelection = false; + this.composing = null; + }; + + TextareaInput.prototype.init = function (display) { + var this$1 = this; + + var input = this, cm = this.cm; + this.createField(display); + var te = this.textarea; + + display.wrapper.insertBefore(this.wrapper, display.wrapper.firstChild); + + // Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore) + if (ios) { te.style.width = "0px"; } + + on(te, "input", function () { + if (ie && ie_version >= 9 && this$1.hasSelection) { this$1.hasSelection = null; } + input.poll(); + }); + + on(te, "paste", function (e) { + if (signalDOMEvent(cm, e) || handlePaste(e, cm)) { return } + + cm.state.pasteIncoming = +new Date; + input.fastPoll(); + }); + + function prepareCopyCut(e) { + if (signalDOMEvent(cm, e)) { return } + if (cm.somethingSelected()) { + setLastCopied({lineWise: false, text: cm.getSelections()}); + } else if (!cm.options.lineWiseCopyCut) { + return + } else { + var ranges = copyableRanges(cm); + setLastCopied({lineWise: true, text: ranges.text}); + if (e.type == "cut") { + cm.setSelections(ranges.ranges, null, sel_dontScroll); + } else { + input.prevInput = ""; + te.value = ranges.text.join("\n"); + selectInput(te); + } + } + if (e.type == "cut") { cm.state.cutIncoming = +new Date; } + } + on(te, "cut", prepareCopyCut); + on(te, "copy", prepareCopyCut); + + on(display.scroller, "paste", function (e) { + if (eventInWidget(display, e) || signalDOMEvent(cm, e)) { return } + if (!te.dispatchEvent) { + cm.state.pasteIncoming = +new Date; + input.focus(); + return + } + + // Pass the `paste` event to the textarea so it's handled by its event listener. + var event = new Event("paste"); + event.clipboardData = e.clipboardData; + te.dispatchEvent(event); + }); + + // Prevent normal selection in the editor (we handle our own) + on(display.lineSpace, "selectstart", function (e) { + if (!eventInWidget(display, e)) { e_preventDefault(e); } + }); + + on(te, "compositionstart", function () { + var start = cm.getCursor("from"); + if (input.composing) { input.composing.range.clear(); } + input.composing = { + start: start, + range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"}) + }; + }); + on(te, "compositionend", function () { + if (input.composing) { + input.poll(); + input.composing.range.clear(); + input.composing = null; + } + }); + }; + + TextareaInput.prototype.createField = function (_display) { + // Wraps and hides input textarea + this.wrapper = hiddenTextarea(); + // The semihidden textarea that is focused when the editor is + // focused, and receives input. + this.textarea = this.wrapper.firstChild; + }; + + TextareaInput.prototype.prepareSelection = function () { + // Redraw the selection and/or cursor + var cm = this.cm, display = cm.display, doc = cm.doc; + var result = prepareSelection(cm); + + // Move the hidden textarea near the cursor to prevent scrolling artifacts + if (cm.options.moveInputWithCursor) { + var headPos = cursorCoords(cm, doc.sel.primary().head, "div"); + var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect(); + result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10, + headPos.top + lineOff.top - wrapOff.top)); + result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10, + headPos.left + lineOff.left - wrapOff.left)); + } + + return result + }; + + TextareaInput.prototype.showSelection = function (drawn) { + var cm = this.cm, display = cm.display; + removeChildrenAndAdd(display.cursorDiv, drawn.cursors); + removeChildrenAndAdd(display.selectionDiv, drawn.selection); + if (drawn.teTop != null) { + this.wrapper.style.top = drawn.teTop + "px"; + this.wrapper.style.left = drawn.teLeft + "px"; + } + }; + + // Reset the input to correspond to the selection (or to be empty, + // when not typing and nothing is selected) + TextareaInput.prototype.reset = function (typing) { + if (this.contextMenuPending || this.composing) { return } + var cm = this.cm; + if (cm.somethingSelected()) { + this.prevInput = ""; + var content = cm.getSelection(); + this.textarea.value = content; + if (cm.state.focused) { selectInput(this.textarea); } + if (ie && ie_version >= 9) { this.hasSelection = content; } + } else if (!typing) { + this.prevInput = this.textarea.value = ""; + if (ie && ie_version >= 9) { this.hasSelection = null; } + } + }; + + TextareaInput.prototype.getField = function () { return this.textarea }; + + TextareaInput.prototype.supportsTouch = function () { return false }; + + TextareaInput.prototype.focus = function () { + if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt() != this.textarea)) { + try { this.textarea.focus(); } + catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM + } + }; + + TextareaInput.prototype.blur = function () { this.textarea.blur(); }; + + TextareaInput.prototype.resetPosition = function () { + this.wrapper.style.top = this.wrapper.style.left = 0; + }; + + TextareaInput.prototype.receivedFocus = function () { this.slowPoll(); }; + + // Poll for input changes, using the normal rate of polling. This + // runs as long as the editor is focused. + TextareaInput.prototype.slowPoll = function () { + var this$1 = this; + + if (this.pollingFast) { return } + this.polling.set(this.cm.options.pollInterval, function () { + this$1.poll(); + if (this$1.cm.state.focused) { this$1.slowPoll(); } + }); + }; + + // When an event has just come in that is likely to add or change + // something in the input textarea, we poll faster, to ensure that + // the change appears on the screen quickly. + TextareaInput.prototype.fastPoll = function () { + var missed = false, input = this; + input.pollingFast = true; + function p() { + var changed = input.poll(); + if (!changed && !missed) {missed = true; input.polling.set(60, p);} + else {input.pollingFast = false; input.slowPoll();} + } + input.polling.set(20, p); + }; + + // Read input from the textarea, and update the document to match. + // When something is selected, it is present in the textarea, and + // selected (unless it is huge, in which case a placeholder is + // used). When nothing is selected, the cursor sits after previously + // seen text (can be empty), which is stored in prevInput (we must + // not reset the textarea when typing, because that breaks IME). + TextareaInput.prototype.poll = function () { + var this$1 = this; + + var cm = this.cm, input = this.textarea, prevInput = this.prevInput; + // Since this is called a *lot*, try to bail out as cheaply as + // possible when it is clear that nothing happened. hasSelection + // will be the case when there is a lot of text in the textarea, + // in which case reading its value would be expensive. + if (this.contextMenuPending || !cm.state.focused || + (hasSelection(input) && !prevInput && !this.composing) || + cm.isReadOnly() || cm.options.disableInput || cm.state.keySeq) + { return false } + + var text = input.value; + // If nothing changed, bail. + if (text == prevInput && !cm.somethingSelected()) { return false } + // Work around nonsensical selection resetting in IE9/10, and + // inexplicable appearance of private area unicode characters on + // some key combos in Mac (#2689). + if (ie && ie_version >= 9 && this.hasSelection === text || + mac && /[\uf700-\uf7ff]/.test(text)) { + cm.display.input.reset(); + return false + } + + if (cm.doc.sel == cm.display.selForContextMenu) { + var first = text.charCodeAt(0); + if (first == 0x200b && !prevInput) { prevInput = "\u200b"; } + if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo") } + } + // Find the part of the input that is actually new + var same = 0, l = Math.min(prevInput.length, text.length); + while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) { ++same; } + + runInOp(cm, function () { + applyTextInput(cm, text.slice(same), prevInput.length - same, + null, this$1.composing ? "*compose" : null); + + // Don't leave long text in the textarea, since it makes further polling slow + if (text.length > 1000 || text.indexOf("\n") > -1) { input.value = this$1.prevInput = ""; } + else { this$1.prevInput = text; } + + if (this$1.composing) { + this$1.composing.range.clear(); + this$1.composing.range = cm.markText(this$1.composing.start, cm.getCursor("to"), + {className: "CodeMirror-composing"}); + } + }); + return true + }; + + TextareaInput.prototype.ensurePolled = function () { + if (this.pollingFast && this.poll()) { this.pollingFast = false; } + }; + + TextareaInput.prototype.onKeyPress = function () { + if (ie && ie_version >= 9) { this.hasSelection = null; } + this.fastPoll(); + }; + + TextareaInput.prototype.onContextMenu = function (e) { + var input = this, cm = input.cm, display = cm.display, te = input.textarea; + if (input.contextMenuPending) { input.contextMenuPending(); } + var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; + if (!pos || presto) { return } // Opera is difficult. + + // Reset the current text selection only if the click is done outside of the selection + // and 'resetSelectionOnContextMenu' option is true. + var reset = cm.options.resetSelectionOnContextMenu; + if (reset && cm.doc.sel.contains(pos) == -1) + { operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll); } + + var oldCSS = te.style.cssText, oldWrapperCSS = input.wrapper.style.cssText; + var wrapperBox = input.wrapper.offsetParent.getBoundingClientRect(); + input.wrapper.style.cssText = "position: static"; + te.style.cssText = "position: absolute; width: 30px; height: 30px;\n top: " + (e.clientY - wrapperBox.top - 5) + "px; left: " + (e.clientX - wrapperBox.left - 5) + "px;\n z-index: 1000; background: " + (ie ? "rgba(255, 255, 255, .05)" : "transparent") + ";\n outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);"; + var oldScrollY; + if (webkit) { oldScrollY = window.scrollY; } // Work around Chrome issue (#2712) + display.input.focus(); + if (webkit) { window.scrollTo(null, oldScrollY); } + display.input.reset(); + // Adds "Select all" to context menu in FF + if (!cm.somethingSelected()) { te.value = input.prevInput = " "; } + input.contextMenuPending = rehide; + display.selForContextMenu = cm.doc.sel; + clearTimeout(display.detectingSelectAll); + + // Select-all will be greyed out if there's nothing to select, so + // this adds a zero-width space so that we can later check whether + // it got selected. + function prepareSelectAllHack() { + if (te.selectionStart != null) { + var selected = cm.somethingSelected(); + var extval = "\u200b" + (selected ? te.value : ""); + te.value = "\u21da"; // Used to catch context-menu undo + te.value = extval; + input.prevInput = selected ? "" : "\u200b"; + te.selectionStart = 1; te.selectionEnd = extval.length; + // Re-set this, in case some other handler touched the + // selection in the meantime. + display.selForContextMenu = cm.doc.sel; + } + } + function rehide() { + if (input.contextMenuPending != rehide) { return } + input.contextMenuPending = false; + input.wrapper.style.cssText = oldWrapperCSS; + te.style.cssText = oldCSS; + if (ie && ie_version < 9) { display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos); } + + // Try to detect the user choosing select-all + if (te.selectionStart != null) { + if (!ie || (ie && ie_version < 9)) { prepareSelectAllHack(); } + var i = 0, poll = function () { + if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 && + te.selectionEnd > 0 && input.prevInput == "\u200b") { + operation(cm, selectAll)(cm); + } else if (i++ < 10) { + display.detectingSelectAll = setTimeout(poll, 500); + } else { + display.selForContextMenu = null; + display.input.reset(); + } + }; + display.detectingSelectAll = setTimeout(poll, 200); + } + } + + if (ie && ie_version >= 9) { prepareSelectAllHack(); } + if (captureRightClick) { + e_stop(e); + var mouseup = function () { + off(window, "mouseup", mouseup); + setTimeout(rehide, 20); + }; + on(window, "mouseup", mouseup); + } else { + setTimeout(rehide, 50); + } + }; + + TextareaInput.prototype.readOnlyChanged = function (val) { + if (!val) { this.reset(); } + this.textarea.disabled = val == "nocursor"; + }; + + TextareaInput.prototype.setUneditable = function () {}; + + TextareaInput.prototype.needsContentAttribute = false; + + function fromTextArea(textarea, options) { + options = options ? copyObj(options) : {}; + options.value = textarea.value; + if (!options.tabindex && textarea.tabIndex) + { options.tabindex = textarea.tabIndex; } + if (!options.placeholder && textarea.placeholder) + { options.placeholder = textarea.placeholder; } + // Set autofocus to true if this textarea is focused, or if it has + // autofocus and no other element is focused. + if (options.autofocus == null) { + var hasFocus = activeElt(); + options.autofocus = hasFocus == textarea || + textarea.getAttribute("autofocus") != null && hasFocus == document.body; + } + + function save() {textarea.value = cm.getValue();} + + var realSubmit; + if (textarea.form) { + on(textarea.form, "submit", save); + // Deplorable hack to make the submit method do the right thing. + if (!options.leaveSubmitMethodAlone) { + var form = textarea.form; + realSubmit = form.submit; + try { + var wrappedSubmit = form.submit = function () { + save(); + form.submit = realSubmit; + form.submit(); + form.submit = wrappedSubmit; + }; + } catch(e) {} + } + } + + options.finishInit = function (cm) { + cm.save = save; + cm.getTextArea = function () { return textarea; }; + cm.toTextArea = function () { + cm.toTextArea = isNaN; // Prevent this from being ran twice + save(); + textarea.parentNode.removeChild(cm.getWrapperElement()); + textarea.style.display = ""; + if (textarea.form) { + off(textarea.form, "submit", save); + if (typeof textarea.form.submit == "function") + { textarea.form.submit = realSubmit; } + } + }; + }; + + textarea.style.display = "none"; + var cm = CodeMirror(function (node) { return textarea.parentNode.insertBefore(node, textarea.nextSibling); }, + options); + return cm + } + + function addLegacyProps(CodeMirror) { + CodeMirror.off = off; + CodeMirror.on = on; + CodeMirror.wheelEventPixels = wheelEventPixels; + CodeMirror.Doc = Doc; + CodeMirror.splitLines = splitLinesAuto; + CodeMirror.countColumn = countColumn; + CodeMirror.findColumn = findColumn; + CodeMirror.isWordChar = isWordCharBasic; + CodeMirror.Pass = Pass; + CodeMirror.signal = signal; + CodeMirror.Line = Line; + CodeMirror.changeEnd = changeEnd; + CodeMirror.scrollbarModel = scrollbarModel; + CodeMirror.Pos = Pos; + CodeMirror.cmpPos = cmp; + CodeMirror.modes = modes; + CodeMirror.mimeModes = mimeModes; + CodeMirror.resolveMode = resolveMode; + CodeMirror.getMode = getMode; + CodeMirror.modeExtensions = modeExtensions; + CodeMirror.extendMode = extendMode; + CodeMirror.copyState = copyState; + CodeMirror.startState = startState; + CodeMirror.innerMode = innerMode; + CodeMirror.commands = commands; + CodeMirror.keyMap = keyMap; + CodeMirror.keyName = keyName; + CodeMirror.isModifierKey = isModifierKey; + CodeMirror.lookupKey = lookupKey; + CodeMirror.normalizeKeyMap = normalizeKeyMap; + CodeMirror.StringStream = StringStream; + CodeMirror.SharedTextMarker = SharedTextMarker; + CodeMirror.TextMarker = TextMarker; + CodeMirror.LineWidget = LineWidget; + CodeMirror.e_preventDefault = e_preventDefault; + CodeMirror.e_stopPropagation = e_stopPropagation; + CodeMirror.e_stop = e_stop; + CodeMirror.addClass = addClass; + CodeMirror.contains = contains; + CodeMirror.rmClass = rmClass; + CodeMirror.keyNames = keyNames; + } + + // EDITOR CONSTRUCTOR + + defineOptions(CodeMirror); + + addEditorMethods(CodeMirror); + + // Set up methods on CodeMirror's prototype to redirect to the editor's document. + var dontDelegate = "iter insert remove copy getEditor constructor".split(" "); + for (var prop in Doc.prototype) { if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0) + { CodeMirror.prototype[prop] = (function(method) { + return function() {return method.apply(this.doc, arguments)} + })(Doc.prototype[prop]); } } + + eventMixin(Doc); + CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput}; + + // Extra arguments are stored as the mode's dependencies, which is + // used by (legacy) mechanisms like loadmode.js to automatically + // load a mode. (Preferred mechanism is the require/define calls.) + CodeMirror.defineMode = function(name/*, mode, …*/) { + if (!CodeMirror.defaults.mode && name != "null") { CodeMirror.defaults.mode = name; } + defineMode.apply(this, arguments); + }; + + CodeMirror.defineMIME = defineMIME; + + // Minimal default mode. + CodeMirror.defineMode("null", function () { return ({token: function (stream) { return stream.skipToEnd(); }}); }); + CodeMirror.defineMIME("text/plain", "null"); + + // EXTENSIONS + + CodeMirror.defineExtension = function (name, func) { + CodeMirror.prototype[name] = func; + }; + CodeMirror.defineDocExtension = function (name, func) { + Doc.prototype[name] = func; + }; + + CodeMirror.fromTextArea = fromTextArea; + + addLegacyProps(CodeMirror); + + CodeMirror.version = "5.45.0"; + + return CodeMirror; + +})));