refresing control points when undoing topic move

mindplot/src/main/javascript/ControlPoint.js

@@ -49,6 +49,11 @@ mindplot.ControlPoint.prototype.setLine= function(line) {
     this._endPoint[1] = this._line.getLine().getTo().clone();
 };
 
+mindplot.ControlPoint.prototype.redraw = function(){
+    if(this._line)
+        this._createControlPoint();
+};
+
 mindplot.ControlPoint.prototype._createControlPoint = function() {
     this._controls= this._line.getLine().getControlPoints();
     var pos = this._line.getLine().getFrom();

mindplot/src/main/javascript/DesignerActionRunner.js

@@ -134,6 +134,9 @@ mindplot.CommandContext = new Class({
             }
         }.bind(this));
         return result;
+    },
+    getSelectedRelationshipLines:function(){
+        return this._designer.getSelectedRelationshipLines();
     }
 });
 

mindplot/src/main/javascript/RelationshipLine.js

@@ -73,7 +73,7 @@ mindplot.RelationshipLine.prototype.redraw = function()
         this._refreshSelectedShape();
     }
     this._focusShape.moveToBack();
-
+    this._controlPointsController.redraw();
 };
 
 mindplot.RelationshipLine.prototype.addToWorkspace = function(workspace)

mindplot/src/main/javascript/commands/DragTopicCommand.js

@@ -86,6 +86,10 @@ mindplot.commands.DragTopicCommand = mindplot.Command.extend(
     undoExecute: function(commandContext)
     {
         this.execute(commandContext);
+        var selectedRelationships = commandContext.getSelectedRelationshipLines();
+        selectedRelationships.forEach(function(relationshipLine,index){
+            relationshipLine.redraw();
+        });
 
     },
     setPosition: function(point)