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mirror of https://github.com/BookStackApp/BookStack.git synced 2024-10-30 15:42:41 +01:00
BookStack/resources/js/components/wysiwyg-editor.js
Dan Brown bc1e84325c Made codemirror editor load a lot more efficient
Brings down total editor load time from about 11s to 7s from testing in
4x reduced CPU speed in chrome.
About 1.5 seconds of that is editor init/page load.
Post editor-init/page-load time is now 60% of previous from testing.

Related to #2518
2021-01-31 16:26:54 +00:00

737 lines
28 KiB
JavaScript

import Code from "../services/code";
import DrawIO from "../services/drawio";
import Clipboard from "../services/clipboard";
/**
* Handle pasting images from clipboard.
* @param {ClipboardEvent} event
* @param {WysiwygEditor} wysiwygComponent
* @param editor
*/
function editorPaste(event, editor, wysiwygComponent) {
const clipboard = new Clipboard(event.clipboardData || event.dataTransfer);
// Don't handle the event ourselves if no items exist of contains table-looking data
if (!clipboard.hasItems() || clipboard.containsTabularData()) {
return;
}
const images = clipboard.getImages();
for (const imageFile of images) {
const id = "image-" + Math.random().toString(16).slice(2);
const loadingImage = window.baseUrl('/loading.gif');
event.preventDefault();
setTimeout(() => {
editor.insertContent(`<p><img src="${loadingImage}" id="${id}"></p>`);
uploadImageFile(imageFile, wysiwygComponent).then(resp => {
const safeName = resp.name.replace(/"/g, '');
const newImageHtml = `<img src="${resp.thumbs.display}" alt="${safeName}" />`;
const newEl = editor.dom.create('a', {
target: '_blank',
href: resp.url,
}, newImageHtml);
editor.dom.replace(newEl, id);
}).catch(err => {
editor.dom.remove(id);
window.$events.emit('error', wysiwygComponent.imageUploadErrorText);
console.log(err);
});
}, 10);
}
}
/**
* Upload an image file to the server
* @param {File} file
* @param {WysiwygEditor} wysiwygComponent
*/
async function uploadImageFile(file, wysiwygComponent) {
if (file === null || file.type.indexOf('image') !== 0) {
throw new Error(`Not an image file`);
}
let ext = 'png';
if (file.name) {
let fileNameMatches = file.name.match(/\.(.+)$/);
if (fileNameMatches.length > 1) ext = fileNameMatches[1];
}
const remoteFilename = "image-" + Date.now() + "." + ext;
const formData = new FormData();
formData.append('file', file, remoteFilename);
formData.append('uploaded_to', wysiwygComponent.pageId);
const resp = await window.$http.post(window.baseUrl('/images/gallery'), formData);
return resp.data;
}
function registerEditorShortcuts(editor) {
// Headers
for (let i = 1; i < 5; i++) {
editor.shortcuts.add('meta+' + i, '', ['FormatBlock', false, 'h' + (i+1)]);
}
// Other block shortcuts
editor.shortcuts.add('meta+5', '', ['FormatBlock', false, 'p']);
editor.shortcuts.add('meta+d', '', ['FormatBlock', false, 'p']);
editor.shortcuts.add('meta+6', '', ['FormatBlock', false, 'blockquote']);
editor.shortcuts.add('meta+q', '', ['FormatBlock', false, 'blockquote']);
editor.shortcuts.add('meta+7', '', ['codeeditor', false, 'pre']);
editor.shortcuts.add('meta+e', '', ['codeeditor', false, 'pre']);
editor.shortcuts.add('meta+8', '', ['FormatBlock', false, 'code']);
editor.shortcuts.add('meta+shift+E', '', ['FormatBlock', false, 'code']);
// Save draft shortcut
editor.shortcuts.add('meta+S', '', () => {
window.$events.emit('editor-save-draft');
});
// Save page shortcut
editor.shortcuts.add('meta+13', '', () => {
window.$events.emit('editor-save-page');
});
// Loop through callout styles
editor.shortcuts.add('meta+9', '', function() {
const selectedNode = editor.selection.getNode();
const callout = selectedNode ? selectedNode.closest('.callout') : null;
const formats = ['info', 'success', 'warning', 'danger'];
const currentFormatIndex = formats.findIndex(format => callout && callout.classList.contains(format));
const newFormatIndex = (currentFormatIndex + 1) % formats.length;
const newFormat = formats[newFormatIndex];
editor.formatter.apply('callout' + newFormat);
});
}
/**
* Load custom HTML head content from the settings into the editor.
* @param editor
*/
function loadCustomHeadContent(editor) {
window.$http.get(window.baseUrl('/custom-head-content')).then(resp => {
if (!resp.data) return;
let head = editor.getDoc().querySelector('head');
head.innerHTML += resp.data;
});
}
/**
* Create and enable our custom code plugin
*/
function codePlugin() {
function elemIsCodeBlock(elem) {
return elem.className === 'CodeMirrorContainer';
}
function showPopup(editor) {
const selectedNode = editor.selection.getNode();
if (!elemIsCodeBlock(selectedNode)) {
const providedCode = editor.selection.getNode().textContent;
window.components.first('code-editor').open(providedCode, '', (code, lang) => {
const wrap = document.createElement('div');
wrap.innerHTML = `<pre><code class="language-${lang}"></code></pre>`;
wrap.querySelector('code').innerText = code;
editor.formatter.toggle('pre');
const node = editor.selection.getNode();
editor.dom.setHTML(node, wrap.querySelector('pre').innerHTML);
editor.fire('SetContent');
editor.focus()
});
return;
}
let lang = selectedNode.hasAttribute('data-lang') ? selectedNode.getAttribute('data-lang') : '';
let currentCode = selectedNode.querySelector('textarea').textContent;
window.components.first('code-editor').open(currentCode, lang, (code, lang) => {
const editorElem = selectedNode.querySelector('.CodeMirror');
const cmInstance = editorElem.CodeMirror;
if (cmInstance) {
Code.setContent(cmInstance, code);
Code.setMode(cmInstance, lang, code);
}
const textArea = selectedNode.querySelector('textarea');
if (textArea) textArea.textContent = code;
selectedNode.setAttribute('data-lang', lang);
editor.focus()
});
}
function codeMirrorContainerToPre(codeMirrorContainer) {
const textArea = codeMirrorContainer.querySelector('textarea');
const code = textArea.textContent;
const lang = codeMirrorContainer.getAttribute('data-lang');
codeMirrorContainer.removeAttribute('contentEditable');
const pre = document.createElement('pre');
const codeElem = document.createElement('code');
codeElem.classList.add(`language-${lang}`);
codeElem.textContent = code;
pre.appendChild(codeElem);
codeMirrorContainer.parentElement.replaceChild(pre, codeMirrorContainer);
}
window.tinymce.PluginManager.add('codeeditor', function(editor, url) {
const $ = editor.$;
editor.addButton('codeeditor', {
text: 'Code block',
icon: false,
cmd: 'codeeditor'
});
editor.addCommand('codeeditor', () => {
showPopup(editor);
});
// Convert
editor.on('PreProcess', function (e) {
$('div.CodeMirrorContainer', e.node).each((index, elem) => {
codeMirrorContainerToPre(elem);
});
});
editor.on('dblclick', event => {
let selectedNode = editor.selection.getNode();
if (!elemIsCodeBlock(selectedNode)) return;
showPopup(editor);
});
function parseCodeMirrorInstances() {
// Recover broken codemirror instances
$('.CodeMirrorContainer').filter((index ,elem) => {
return typeof elem.querySelector('.CodeMirror').CodeMirror === 'undefined';
}).each((index, elem) => {
codeMirrorContainerToPre(elem);
});
const codeSamples = $('body > pre').filter((index, elem) => {
return elem.contentEditable !== "false";
});
if (!codeSamples.length) return;
editor.undoManager.transact(function () {
codeSamples.each((index, elem) => {
Code.wysiwygView(elem);
});
});
}
editor.on('init', function() {
// Parse code mirror instances on init, but delay a little so this runs after
// initial styles are fetched into the editor.
parseCodeMirrorInstances();
// Parsed code mirror blocks when content is set but wait before setting this handler
// to avoid any init 'SetContent' events.
setTimeout(() => {
editor.on('SetContent', parseCodeMirrorInstances);
}, 200);
});
});
}
function drawIoPlugin(drawioUrl, isDarkMode, pageId, wysiwygComponent) {
let pageEditor = null;
let currentNode = null;
function isDrawing(node) {
return node.hasAttribute('drawio-diagram');
}
function showDrawingManager(mceEditor, selectedNode = null) {
pageEditor = mceEditor;
currentNode = selectedNode;
// Show image manager
window.ImageManager.show(function (image) {
if (selectedNode) {
let imgElem = selectedNode.querySelector('img');
pageEditor.dom.setAttrib(imgElem, 'src', image.url);
pageEditor.dom.setAttrib(selectedNode, 'drawio-diagram', image.id);
} else {
let imgHTML = `<div drawio-diagram="${image.id}" contenteditable="false"><img src="${image.url}"></div>`;
pageEditor.insertContent(imgHTML);
}
}, 'drawio');
}
function showDrawingEditor(mceEditor, selectedNode = null) {
pageEditor = mceEditor;
currentNode = selectedNode;
DrawIO.show(drawioUrl, drawingInit, updateContent);
}
async function updateContent(pngData) {
const id = "image-" + Math.random().toString(16).slice(2);
const loadingImage = window.baseUrl('/loading.gif');
// Handle updating an existing image
if (currentNode) {
DrawIO.close();
let imgElem = currentNode.querySelector('img');
try {
const img = await DrawIO.upload(pngData, pageId);
pageEditor.dom.setAttrib(imgElem, 'src', img.url);
pageEditor.dom.setAttrib(currentNode, 'drawio-diagram', img.id);
} catch (err) {
window.$events.emit('error', wysiwygComponent.imageUploadErrorText);
console.log(err);
}
return;
}
setTimeout(async () => {
pageEditor.insertContent(`<div drawio-diagram contenteditable="false"><img src="${loadingImage}" id="${id}"></div>`);
DrawIO.close();
try {
const img = await DrawIO.upload(pngData, pageId);
pageEditor.dom.setAttrib(id, 'src', img.url);
pageEditor.dom.get(id).parentNode.setAttribute('drawio-diagram', img.id);
} catch (err) {
pageEditor.dom.remove(id);
window.$events.emit('error', wysiwygComponent.imageUploadErrorText);
console.log(err);
}
}, 5);
}
function drawingInit() {
if (!currentNode) {
return Promise.resolve('');
}
let drawingId = currentNode.getAttribute('drawio-diagram');
return DrawIO.load(drawingId);
}
window.tinymce.PluginManager.add('drawio', function(editor, url) {
editor.addCommand('drawio', () => {
const selectedNode = editor.selection.getNode();
showDrawingEditor(editor, isDrawing(selectedNode) ? selectedNode : null);
});
editor.addButton('drawio', {
type: 'splitbutton',
tooltip: 'Drawing',
image: `data:image/svg+xml;base64,${btoa(`<svg viewBox="0 0 24 24" fill="${isDarkMode ? '#BBB' : '#000000'}" xmlns="http://www.w3.org/2000/svg">
<path d="M23 7V1h-6v2H7V1H1v6h2v10H1v6h6v-2h10v2h6v-6h-2V7h2zM3 3h2v2H3V3zm2 18H3v-2h2v2zm12-2H7v-2H5V7h2V5h10v2h2v10h-2v2zm4 2h-2v-2h2v2zM19 5V3h2v2h-2zm-5.27 9h-3.49l-.73 2H7.89l3.4-9h1.4l3.41 9h-1.63l-.74-2zm-3.04-1.26h2.61L12 8.91l-1.31 3.83z"/>
<path d="M0 0h24v24H0z" fill="none"/>
</svg>`)}`,
cmd: 'drawio',
menu: [
{
text: 'Drawing Manager',
onclick() {
let selectedNode = editor.selection.getNode();
showDrawingManager(editor, isDrawing(selectedNode) ? selectedNode : null);
}
}
]
});
editor.on('dblclick', event => {
let selectedNode = editor.selection.getNode();
if (!isDrawing(selectedNode)) return;
showDrawingEditor(editor, selectedNode);
});
editor.on('SetContent', function () {
const drawings = editor.$('body > div[drawio-diagram]');
if (!drawings.length) return;
editor.undoManager.transact(function () {
drawings.each((index, elem) => {
elem.setAttribute('contenteditable', 'false');
});
});
});
});
}
function customHrPlugin() {
window.tinymce.PluginManager.add('customhr', function (editor) {
editor.addCommand('InsertHorizontalRule', function () {
let hrElem = document.createElement('hr');
let cNode = editor.selection.getNode();
let parentNode = cNode.parentNode;
parentNode.insertBefore(hrElem, cNode);
});
editor.addButton('hr', {
icon: 'hr',
tooltip: 'Horizontal line',
cmd: 'InsertHorizontalRule'
});
editor.addMenuItem('hr', {
icon: 'hr',
text: 'Horizontal line',
cmd: 'InsertHorizontalRule',
context: 'insert'
});
});
}
function listenForBookStackEditorEvents(editor) {
// Replace editor content
window.$events.listen('editor::replace', ({html}) => {
editor.setContent(html);
});
// Append editor content
window.$events.listen('editor::append', ({html}) => {
const content = editor.getContent() + html;
editor.setContent(content);
});
// Prepend editor content
window.$events.listen('editor::prepend', ({html}) => {
const content = html + editor.getContent();
editor.setContent(content);
});
// Insert editor content at the current location
window.$events.listen('editor::insert', ({html}) => {
editor.insertContent(html);
});
// Focus on the editor
window.$events.listen('editor::focus', () => {
editor.focus();
});
}
class WysiwygEditor {
setup() {
this.elem = this.$el;
this.pageId = this.$opts.pageId;
this.textDirection = this.$opts.textDirection;
this.imageUploadErrorText = this.$opts.imageUploadErrorText;
this.isDarkMode = document.documentElement.classList.contains('dark-mode');
this.plugins = "image imagetools table textcolor paste link autolink fullscreen code customhr autosave lists codeeditor media";
this.loadPlugins();
this.tinyMceConfig = this.getTinyMceConfig();
window.$events.emitPublic(this.elem, 'editor-tinymce::pre-init', {config: this.tinyMceConfig});
window.tinymce.init(this.tinyMceConfig);
}
loadPlugins() {
codePlugin();
customHrPlugin();
const drawioUrlElem = document.querySelector('[drawio-url]');
if (drawioUrlElem) {
const url = drawioUrlElem.getAttribute('drawio-url');
drawIoPlugin(url, this.isDarkMode, this.pageId, this);
this.plugins += ' drawio';
}
if (this.textDirection === 'rtl') {
this.plugins += ' directionality'
}
}
getToolBar() {
const textDirPlugins = this.textDirection === 'rtl' ? 'ltr rtl' : '';
return `undo redo | styleselect | bold italic underline strikethrough superscript subscript | forecolor backcolor | alignleft aligncenter alignright alignjustify | bullist numlist outdent indent | table image-insert link hr drawio media | removeformat code ${textDirPlugins} fullscreen`
}
getTinyMceConfig() {
const context = this;
return {
selector: '#html-editor',
content_css: [
window.baseUrl('/dist/styles.css'),
],
branding: false,
skin: this.isDarkMode ? 'dark' : 'lightgray',
body_class: 'page-content',
browser_spellcheck: true,
relative_urls: false,
directionality : this.textDirection,
remove_script_host: false,
document_base_url: window.baseUrl('/'),
end_container_on_empty_block: true,
statusbar: false,
menubar: false,
paste_data_images: false,
extended_valid_elements: 'pre[*],svg[*],div[drawio-diagram]',
automatic_uploads: false,
valid_children: "-div[p|h1|h2|h3|h4|h5|h6|blockquote],+div[pre],+div[img]",
plugins: this.plugins,
imagetools_toolbar: 'imageoptions',
toolbar: this.getToolBar(),
content_style: `html, body, html.dark-mode {background: ${this.isDarkMode ? '#222' : '#fff'};} body {padding-left: 15px !important; padding-right: 15px !important; margin:0!important; margin-left:auto!important;margin-right:auto!important;}`,
style_formats: [
{title: "Header Large", format: "h2"},
{title: "Header Medium", format: "h3"},
{title: "Header Small", format: "h4"},
{title: "Header Tiny", format: "h5"},
{title: "Paragraph", format: "p", exact: true, classes: ''},
{title: "Blockquote", format: "blockquote"},
{title: "Code Block", icon: "code", cmd: 'codeeditor', format: 'codeeditor'},
{title: "Inline Code", icon: "code", inline: "code"},
{title: "Callouts", items: [
{title: "Info", format: 'calloutinfo'},
{title: "Success", format: 'calloutsuccess'},
{title: "Warning", format: 'calloutwarning'},
{title: "Danger", format: 'calloutdanger'}
]},
],
style_formats_merge: false,
media_alt_source: false,
media_poster: false,
formats: {
codeeditor: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div'},
alignleft: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes: 'align-left'},
aligncenter: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes: 'align-center'},
alignright: {selector: 'p,h1,h2,h3,h4,h5,h6,td,th,div,ul,ol,li,table,img', classes: 'align-right'},
calloutsuccess: {block: 'p', exact: true, attributes: {class: 'callout success'}},
calloutinfo: {block: 'p', exact: true, attributes: {class: 'callout info'}},
calloutwarning: {block: 'p', exact: true, attributes: {class: 'callout warning'}},
calloutdanger: {block: 'p', exact: true, attributes: {class: 'callout danger'}}
},
file_browser_callback: function (field_name, url, type, win) {
if (type === 'file') {
window.EntitySelectorPopup.show(function(entity) {
const originalField = win.document.getElementById(field_name);
originalField.value = entity.link;
const mceForm = originalField.closest('.mce-form');
const inputs = mceForm.querySelectorAll('input');
// Set text to display if not empty
if (!inputs[1].value) {
inputs[1].value = entity.name;
}
// Set title field
inputs[2].value = entity.name;
});
}
if (type === 'image') {
// Show image manager
window.ImageManager.show(function (image) {
// Set popover link input to image url then fire change event
// to ensure the new value sticks
win.document.getElementById(field_name).value = image.url;
if ("createEvent" in document) {
let evt = document.createEvent("HTMLEvents");
evt.initEvent("change", false, true);
win.document.getElementById(field_name).dispatchEvent(evt);
} else {
win.document.getElementById(field_name).fireEvent("onchange");
}
// Replace the actively selected content with the linked image
let html = `<a href="${image.url}" target="_blank">`;
html += `<img src="${image.thumbs.display}" alt="${image.name}">`;
html += '</a>';
win.tinyMCE.activeEditor.execCommand('mceInsertContent', false, html);
}, 'gallery');
}
},
paste_preprocess: function (plugin, args) {
let content = args.content;
if (content.indexOf('<img src="file://') !== -1) {
args.content = '';
}
},
init_instance_callback: function(editor) {
loadCustomHeadContent(editor);
},
setup: function (editor) {
editor.on('ExecCommand change input NodeChange ObjectResized', editorChange);
editor.on('init', () => {
editorChange();
// Scroll to the content if needed.
const queryParams = (new URL(window.location)).searchParams;
const scrollId = queryParams.get('content-id');
if (scrollId) {
scrollToText(scrollId);
}
// Override for touch events to allow scroll on mobile
const container = editor.getContainer();
const toolbarButtons = container.querySelectorAll('.mce-btn');
for (let button of toolbarButtons) {
button.addEventListener('touchstart', event => {
event.stopPropagation();
});
}
window.editor = editor;
});
function editorChange() {
const content = editor.getContent();
if (context.isDarkMode) {
editor.contentDocument.documentElement.classList.add('dark-mode');
}
window.$events.emit('editor-html-change', content);
}
function scrollToText(scrollId) {
const element = editor.dom.get(encodeURIComponent(scrollId).replace(/!/g, '%21'));
if (!element) {
return;
}
// scroll the element into the view and put the cursor at the end.
element.scrollIntoView();
editor.selection.select(element, true);
editor.selection.collapse(false);
editor.focus();
}
listenForBookStackEditorEvents(editor);
// TODO - Update to standardise across both editors
// Use events within listenForBookStackEditorEvents instead (Different event signature)
window.$events.listen('editor-html-update', html => {
editor.setContent(html);
editor.selection.select(editor.getBody(), true);
editor.selection.collapse(false);
editorChange(html);
});
registerEditorShortcuts(editor);
let wrap;
let draggedContentEditable;
function hasTextContent(node) {
return node && !!( node.textContent || node.innerText );
}
editor.on('dragstart', function () {
let node = editor.selection.getNode();
if (node.nodeName === 'IMG') {
wrap = editor.dom.getParent(node, '.mceTemp');
if (!wrap && node.parentNode.nodeName === 'A' && !hasTextContent(node.parentNode)) {
wrap = node.parentNode;
}
}
// Track dragged contenteditable blocks
if (node.hasAttribute('contenteditable') && node.getAttribute('contenteditable') === 'false') {
draggedContentEditable = node;
}
});
// Custom drop event handling
editor.on('drop', function (event) {
let dom = editor.dom,
rng = tinymce.dom.RangeUtils.getCaretRangeFromPoint(event.clientX, event.clientY, editor.getDoc());
// Template insertion
const templateId = event.dataTransfer && event.dataTransfer.getData('bookstack/template');
if (templateId) {
event.preventDefault();
window.$http.get(`/templates/${templateId}`).then(resp => {
editor.selection.setRng(rng);
editor.undoManager.transact(function () {
editor.execCommand('mceInsertContent', false, resp.data.html);
});
});
}
// Don't allow anything to be dropped in a captioned image.
if (dom.getParent(rng.startContainer, '.mceTemp')) {
event.preventDefault();
} else if (wrap) {
event.preventDefault();
editor.undoManager.transact(function () {
editor.selection.setRng(rng);
editor.selection.setNode(wrap);
dom.remove(wrap);
});
}
// Handle contenteditable section drop
if (!event.isDefaultPrevented() && draggedContentEditable) {
event.preventDefault();
editor.undoManager.transact(function () {
const selectedNode = editor.selection.getNode();
const range = editor.selection.getRng();
const selectedNodeRoot = selectedNode.closest('body > *');
if (range.startOffset > (range.startContainer.length / 2)) {
editor.$(selectedNodeRoot).after(draggedContentEditable);
} else {
editor.$(selectedNodeRoot).before(draggedContentEditable);
}
});
}
// Handle image insert
if (!event.isDefaultPrevented()) {
editorPaste(event, editor, context);
}
wrap = null;
});
// Custom Image picker button
editor.addButton('image-insert', {
title: 'My title',
icon: 'image',
tooltip: 'Insert an image',
onclick: function () {
window.ImageManager.show(function (image) {
let html = `<a href="${image.url}" target="_blank">`;
html += `<img src="${image.thumbs.display}" alt="${image.name}">`;
html += '</a>';
editor.execCommand('mceInsertContent', false, html);
}, 'gallery');
}
});
// Paste image-uploads
editor.on('paste', event => editorPaste(event, editor, context));
// Custom handler hook
window.$events.emitPublic(context.elem, 'editor-tinymce::setup', {editor});
}
};
}
}
export default WysiwygEditor;