fix bug with ghost selections

lib/ace/layer/cursor.js

@@ -141,7 +141,7 @@ var Cursor = function(parentEl) {
     this.update = function(config) {
         this.config = config;
 
-        if (this.session.selectionMarkerCount > 1) {
+        if (this.session.selectionMarkerCount > 0) {
             var selections = this.session.$selectionMarkers;
             var i = 0, sel, cursorIndex = 0;
 

lib/ace/mouse/multi_select_handler.js

@@ -111,9 +111,10 @@ function onMouseDown(e) {
         if (!isMultiSelect && inSelection)
             return; // dragging
 
-        if (!isMultiSelect)
-            selection.addRange(selection.toOrientedRange());
-
+        if (!isMultiSelect) {
+            var range = selection.toOrientedRange();
+            editor.addSelectionMarker(range);
+        }
 
         var oldRange = selection.rangeList.rangeAtPoint(pos);
 
@@ -122,8 +123,13 @@ function onMouseDown(e) {
 
             if (oldRange && tmpSel.isEmpty() && isSamePoint(oldRange.cursor, tmpSel.cursor))
                 selection.substractPoint(tmpSel.cursor);
-            else
+            else {
+                if (range) {
+                    editor.removeSelectionMarkers([range]);
+                    selection.addRange(range);
+                }
                 selection.addRange(tmpSel);
+            }
         });
 
     } else if (!shift && alt && button == 0) {

lib/ace/multi_select.js

@@ -77,17 +77,21 @@ var EditSession = require("./edit_session").EditSession;
      * adds a range to selection entering multiselect mode if necessary
      **/
     this.addRange = function(range) {
-        if (!this.inMultiSelectMode && this.rangeCount == 0) {
-            var oldRange = this.toOrientedRange();
-            if (!range || !range.isEqual(oldRange)) {
-                this.rangeList.add(oldRange);
-                this.$onAddRange(oldRange);
-            }
-        }
-
         if (!range)
             return;
 
+        if (!this.inMultiSelectMode && this.rangeCount == 0) {
+            var oldRange = this.toOrientedRange();
+            if (range.intersects(oldRange)) {
+                this.fromOrientedRange(range);
+                return;
+            }
+            
+            this.rangeList.add(oldRange);
+            this.$onAddRange(oldRange);
+        }
+
+
         if (!range.cursor)
             range.cursor = range.end;
 
@@ -98,7 +102,7 @@ var EditSession = require("./edit_session").EditSession;
         if (removed.length)
             this.$onRemoveRange(removed);
 
-        if (this.rangeCount > 0 && !this.inMultiSelectMode) {
+        if (this.rangeCount > 1 && !this.inMultiSelectMode) {
             this._emit("multiSelect");
             this.inMultiSelectMode = true;
             this.session.$undoSelect = false;

lib/ace/multi_select_test.js

@@ -57,7 +57,7 @@ var exec = function(name, times, args) {
     } while(times --> 1)
 };
 var testRanges = function(str) {
-    assert.equal(editor.selection.getAllRanges()+"", str);
+    assert.equal(editor.selection.getAllRanges() + "", str + "");
 }
 
 module.exports = {
@@ -78,8 +78,8 @@ module.exports = {
         assert.ok(editor.inMultiSelectMode);
         assert.equal(editor.selection.getAllRanges().length, 4);
 
-		var newLine = editor.session.getDocument().getNewLineCharacter();
-		var copyText = "wwww".split("").join(newLine);
+        var newLine = editor.session.getDocument().getNewLineCharacter();
+        var copyText = "wwww".split("").join(newLine);
         assert.equal(editor.getCopyText(), copyText);
         exec("insertstring", 1, "a");
         exec("backspace", 2);
@@ -120,14 +120,11 @@ module.exports = {
             "    wtt.w",
             "    wtt.w"
         ]);
-        var editor = new Editor(new MockRenderer(), doc);
+        editor = new Editor(new MockRenderer(), doc);
         MultiSelect(editor);
 
         editor.selectMoreLines(1)
-        assert.equal(
-            editor.selection.getAllRanges()+"",
-            "Range: [0/0] -> [0/0],Range: [1/0] -> [1/0]"
-        );
+        testRanges("Range: [0/0] -> [0/0],Range: [1/0] -> [1/0]");
         assert.ok(editor.inMultiSelectMode);
 
         var doc2 = new EditSession(["w1"]);
@@ -136,6 +133,34 @@ module.exports = {
 
         editor.setSession(doc);
         assert.ok(editor.inMultiSelectMode);
+    },
+    
+    "test: multiselect addRange": function() {
+        var doc = new EditSession([
+            "w1.w2",
+            "    wtt.w",
+            "    wtt.w"
+        ]);
+        editor = new Editor(new MockRenderer(), doc);
+        MultiSelect(editor);
+		var selection = editor.selection;
+
+        var range1 = new Range(0, 2, 0, 4);
+        editor.selection.fromOrientedRange(range1);
+        
+        var range2 = new Range(0, 3, 0, 4);
+        selection.addRange(range2);
+        assert.ok(!editor.inMultiSelectMode);
+        assert.ok(range2.isEqual(editor.selection.getRange()));
+        
+        var range3 = new Range(0, 1, 0, 1);
+        selection.addRange(range3);
+        assert.ok(editor.inMultiSelectMode);
+        testRanges([range3, range2]);
+        
+        var range4 = new Range(0, 0, 4, 0);
+        selection.addRange(range4);
+        assert.ok(!editor.inMultiSelectMode);
     }
 };
 

lib/ace/range.js

@@ -117,7 +117,7 @@ var Range = function(startRow, startColumn, endRow, endColumn) {
         return this.comparePoint(range.start) == 0 && this.comparePoint(range.end) == 0;
     }
 
-    this.intersectsRange = function(range) {
+    this.intersects = function(range) {
         var cmp = this.compareRange(range);
         return (cmp == -1 || cmp == 0 || cmp == 1);
     }