Issue #2076: Two indistinguishable events for different cases of working set reordering

src/document/DocumentManager.js

@@ -367,8 +367,8 @@ define(function (require, exports, module) {
 
     /**
      * Mutually exchanges the files at the indexes passed by parameters.
-     * @param {!number} index - old file index
-     * @param {!number} index - new file index
+     * @param {number} index  Old file index
+     * @param {number} index  New file index
      */
     function swapWorkingSetIndexes(index1, index2) {
         var length = _workingSet.length - 1;
@@ -378,13 +378,15 @@ define(function (require, exports, module) {
             temp = _workingSet[index1];
             _workingSet[index1] = _workingSet[index2];
             _workingSet[index2] = temp;
+
+            $(exports).triggerHandler("workingSetSort");
             $(exports).triggerHandler("workingSetDisableAutoSorting");
         }
     }
 
     /**
      * Sorts _workingSet using the compare function
-     * @param {!function(FileEntry, FileEntry)} compareFn - the function that will be used inside JavaScript's
+     * @param {function(FileEntry, FileEntry): number} compareFn  The function that will be used inside JavaScript's
      *      sort function. The return a value should be >0 (sort a to a lower index than b), =0 (leaves a and b
      *      unchanged with respect to each other) or <0 (sort b to a lower index than a) and must always returns
      *      the same value when given a specific pair of elements a and b as its two arguments.
@@ -422,7 +424,7 @@ define(function (require, exports, module) {
     /**
      * Get the next or previous file in the working set, in MRU order (relative to currentDocument). May
      * return currentDocument itself if working set is length 1.
-     * @param {Number} inc  -1 for previous, +1 for next; no other values allowed
+     * @param {number} inc  -1 for previous, +1 for next; no other values allowed
      * @return {?FileEntry}  null if working set empty
      */
     function getNextPrevFile(inc) {

src/project/WorkingSetView.js

@@ -50,6 +50,14 @@ define(function (require, exports, module) {
         $openFilesContainer,
         $openFilesList;
 
+    /**
+     * @private
+     * Internal flag to suppress redrawing the Working Set after a workingSetSort event.
+     * @type {boolean}
+     */
+    var _suppressSortRedraw = false;
+
+
     /**
      * @private
      * Redraw selection when list size changes or DocumentManager currentDocument changes.
@@ -179,6 +187,9 @@ define(function (require, exports, module) {
             if (!moved && Math.abs(top) > 3) {
                 Menus.closeAll();
                 moved = true;
+
+                // Don't redraw the working set for the next events
+                _suppressSortRedraw = true;
             }
         }
 
@@ -256,6 +267,9 @@ define(function (require, exports, module) {
                 if (addBottomShadow) {
                     ViewUtils.addScrollerShadow($openFilesContainer[0], null, true);
                 }
+
+                // The drag is done, so set back to the default
+                _suppressSortRedraw = false;
             }
         }
 
@@ -550,11 +564,13 @@ define(function (require, exports, module) {
         _redraw();
     }
 
-    /** 
+    /**
      * @private
      */
     function _handleWorkingSetSort() {
-        _rebuildWorkingSet(true);
+        if (!_suppressSortRedraw) {
+            _rebuildWorkingSet(true);
+        }
     }
 
     /**