Revert "Ensures fold-gutter is always inserted after the line-number gutter (if it exists)"

.brackets.json

@@ -20,7 +20,6 @@
             "clearTimeout",
 
             "ArrayBuffer",
-            "MutationObserver",
             "XMLHttpRequest",
             "Uint32Array",
             "WebSocket"

.eslintrc.json

@@ -61,7 +61,6 @@
         "clearTimeout": false,
 
         "ArrayBuffer": false,
-        "MutationObserver": false,
         "XMLHttpRequest": false,
         "Uint32Array": false,
         "WebSocket": false

src/extensions/default/CodeFolding/main.js

@@ -25,6 +25,7 @@
  * @author Patrick Oladimeji
  * @date 10/24/13 9:35:26 AM
  */
+
 define(function (require, exports, module) {
     "use strict";
 
@@ -52,12 +53,7 @@ define(function (require, exports, module) {
         collapseAllKey          = "Alt-1",
         expandAllKey            = "Shift-Alt-1",
         collapseAllKeyMac       = "Cmd-1",
-        expandAllKeyMac         = "Cmd-Shift-1",
+        expandAllKeyMac         = "Cmd-Shift-1";
-        SAVE_FOLD_STATES        = "saveFoldStates",
-        HIDE_UNTIL_MOUSE_OVER   = "hideUntilMouseover",
-        MAKE_SELECTION_FOLDABLE = "makeSelectionFoldable",
-        ALWAYS_USE_INDENT_FOLD  = "alwaysUseIndentFold",
-        LINE_NUMBER_GUTTER      = "CodeMirror-linenumbers";
 
     ExtensionUtils.loadStyleSheet(module, "main.less");
 
@@ -74,10 +70,10 @@ define(function (require, exports, module) {
         indentFold              = require("foldhelpers/indentFold"),
         selectionFold           = require("foldhelpers/foldSelected");
 
+
     /** Set to true when init() has run; set back to false after deinit() has run */
-    var _isInitialized = false,
+    var _isInitialized = false;
-        gutterObservers = {};
+
-        
     /**
       * Restores the linefolds in the editor using values fetched from the preference store
       * Checks the document to ensure that changes have not been made (e.g., in a different editor)
@@ -116,7 +112,7 @@ define(function (require, exports, module) {
             });
         }
 
-        var saveFolds = prefs.getSetting(SAVE_FOLD_STATES);
+        var saveFolds = prefs.getSetting("saveFoldStates");
         if (!editor || !saveFolds) {
             return;
         }
@@ -151,7 +147,7 @@ define(function (require, exports, module) {
       * @param {Editor} editor the editor whose line folds should be saved
       */
     function saveLineFolds(editor) {
-        var saveFolds = prefs.getSetting(SAVE_FOLD_STATES);
+        var saveFolds = prefs.getSetting("saveFoldStates");
         if (!editor || !saveFolds) {
             return;
         }
@@ -267,7 +263,6 @@ define(function (require, exports, module) {
       */
     function createGutter(editor) {
         var cm = editor._codeMirror;
-        var rootElement = editor.getRootElement();
         var path = editor.document.file.fullPath, _lineFolds = prefs.getFolds(path);
         _lineFolds = _lineFolds || {};
         cm._lineFolds = _lineFolds;
@@ -275,12 +270,9 @@ define(function (require, exports, module) {
 
         // Reuse any existing fold gutter
         if (gutters.indexOf(GUTTER_NAME) < 0) {
-            var lineNumberIndex = gutters.indexOf(LINE_NUMBER_GUTTER);
+            var lnIndex = gutters.indexOf("CodeMirror-linenumbers");
-            if (lineNumberIndex < 0) {
+            $(editor.getRootElement()).addClass("folding-enabled");
-                $(rootElement).addClass("linenumber-disabled");
+            gutters.splice(lnIndex + 1, 0, GUTTER_NAME);
-            }
-            $(rootElement).addClass("folding-enabled");
-            gutters.splice(lineNumberIndex + 1, 0, GUTTER_NAME);
             cm.setOption("gutters",  gutters);
             cm.refresh();  // force recomputing gutter width - .folding-enabled class affects linenumbers gutter which has existing cached width
         }
@@ -288,17 +280,17 @@ define(function (require, exports, module) {
 
         $(cm.getGutterElement()).on({
             mouseenter: function () {
-                if (prefs.getSetting(HIDE_UNTIL_MOUSE_OVER)) {
+                if (prefs.getSetting("hideUntilMouseover")) {
                     foldGutter.updateInViewport(cm);
                 } else {
-                    $(rootElement).addClass("over-gutter");
+                    $(editor.getRootElement()).addClass("over-gutter");
                 }
             },
             mouseleave: function () {
-                if (prefs.getSetting(HIDE_UNTIL_MOUSE_OVER)) {
+                if (prefs.getSetting("hideUntilMouseover")) {
                     foldGutter.clearGutter(cm);
                 } else {
-                    $(rootElement).removeClass("over-gutter");
+                    $(editor.getRootElement()).removeClass("over-gutter");
                 }
             }
         });
@@ -312,12 +304,10 @@ define(function (require, exports, module) {
         var cm = editor._codeMirror;
         var gutters = cm.getOption("gutters").slice(0);
         var index = gutters.indexOf(GUTTER_NAME);
-        var rootElement = editor.getRootElement();
+        $(editor.getRootElement()).removeClass("folding-enabled");
-        $(rootElement).removeClass("folding-enabled");
         gutters.splice(index, 1);
         cm.setOption("gutters",  gutters);
-        // Force recomputing gutter width - .folding-enabled class affected linenumbers gutter
+        cm.refresh();  // force recomputing gutter width - .folding-enabled class affected linenumbers gutter
-        cm.refresh();
         CodeMirror.defineOption("foldGutter", false, null);
     }
 
@@ -326,39 +316,6 @@ define(function (require, exports, module) {
         if (editor._codeMirror.getOption("gutters").indexOf(GUTTER_NAME) === -1) {
             createGutter(editor);
             restoreLineFolds(editor);
-            // Watch mutations on code mirror gutters and ensure line numbers are added before fold gutter.
-            var config = {childList: true};
-            var gutters,
-                lineNumberIndex,
-                foldGutterIndex,
-                cm = editor._codeMirror,
-                rootElement = editor.getRootElement(),
-                guttersContainer = $(".CodeMirror-gutters", rootElement),
-                observer = new MutationObserver(function (mutations) {
-                    observer.disconnect();
-                    // Ensure fold-gutter appears after line numbers.
-                    gutters = cm.getOption("gutters").slice(0);
-                    lineNumberIndex = gutters.indexOf(LINE_NUMBER_GUTTER);
-                    foldGutterIndex = gutters.indexOf(GUTTER_NAME);
-                    if (lineNumberIndex > -1 && foldGutterIndex < lineNumberIndex) {
-                        gutters.splice(foldGutterIndex, 1);
-                        lineNumberIndex = gutters.indexOf(LINE_NUMBER_GUTTER);
-                        gutters.splice(lineNumberIndex + 1, 0, GUTTER_NAME);
-                    }
-                    if (lineNumberIndex < 0) {
-                        $(rootElement).addClass("linenumber-disabled");
-                    } else {
-                        $(rootElement).removeClass("linenumber-disabled");
-                    }
-                    $(rootElement).addClass("folding-enabled");
-                    cm.setOption("gutters", gutters);
-                    cm.refresh();
-                    createGutter(editor);
-                    // Reconnect the observer.
-                    observer.observe(guttersContainer[0], config);
-                });
-            observer.observe(guttersContainer[0], config);
-            gutterObservers[editor.document.file.fullPath] = observer;
         }
     }
 
@@ -414,12 +371,6 @@ define(function (require, exports, module) {
         Editor.forEveryEditor(function (editor) {
             CodeMirror.commands.unfoldAll(editor._codeMirror);
             removeGutter(editor);
-            //disconnect any mutation observers on the gutter
-            var gutterObserver = gutterObservers[editor.document.file.fullPath];
-            if (gutterObserver) {
-                gutterObserver.disconnect();
-                delete gutterObservers[editor.document.file.fullPath];
-            }
         });
     }
 
@@ -436,10 +387,10 @@ define(function (require, exports, module) {
         // don't, we register helpers explicitly here. We also register a global helper for generic indent-based
         // folding, which cuts across all languages if enabled via preference.
         CodeMirror.registerGlobalHelper("fold", "selectionFold", function (mode, cm) {
-            return prefs.getSetting(MAKE_SELECTION_FOLDABLE);
+            return prefs.getSetting("makeSelectionsFoldable");
         }, selectionFold);
         CodeMirror.registerGlobalHelper("fold", "indent", function (mode, cm) {
-            return prefs.getSetting(ALWAYS_USE_INDENT_FOLD);
+            return prefs.getSetting("alwaysUseIndentFold");
         }, indentFold);
 
         CodeMirror.registerHelper("fold", "django", CodeMirror.helpers.fold.brace);

src/extensions/default/CodeFolding/main.less

@@ -49,24 +49,6 @@
     padding-right: 5px;
 }
 
-// If line numbers are not shown and codefolding is enabled we remove the left padding.
- // We add the same padding below to the fold gutter
- .show-line-padding {
-     .folding-enabled.linenumber-disabled pre {
-         padding-left: 0;
-     }
- }
- 
- .CodeMirror.linenumber-disabled {
-     // When there are no line numbers, .show-line-padding class adds 15px left padding to line numbers.
-     // Here we compensate for that gap by adding the same padding to the folding gutter.
-     .CodeMirror-foldgutter,
-     .CodeMirror-foldgutter-open,
-     .CodeMirror-foldgutter-folded,
-     .CodeMirror-foldgutter-blank {
-         padding-left: 15px;
-     }
- }
 
 .CodeMirror-foldmarker {
     // Re-enabling the pointer events for the fold marker. As pointer events are disabled for "CodeMirror-lines"