- Fix do and undo buttons disable action

mindplot/src/main/javascript/widget/Menu.js

@@ -239,17 +239,34 @@ mindplot.widget.Menu = new Class({
         this._registerTooltip('zoomOut', $msg('ZOOM_OUT'));
 
 
-        this._addButton('undoEdition', false, false, function () {
+        var undoButton = this._addButton('undoEdition', false, false, function () {
             designer.undo();
         });
+        undoButton.disable();
         this._registerTooltip('undoEdition', $msg('UNDO'), "meta+Z");
 
 
-        this._addButton('redoEdition', false, false, function () {
+        var redoButton = this._addButton('redoEdition', false, false, function () {
             designer.redo();
         });
+        redoButton.disable();
         this._registerTooltip('redoEdition', $msg('REDO'), "meta+shift+Z");
 
+        if (redoButton && undoButton) {
+            designer.addEvent('modelUpdate', function (event) {
+                if (event.undoSteps > 0) {
+                    undoButton.enable();
+                } else {
+                    undoButton.disable();
+                }
+                if (event.redoSteps > 0) {
+                    redoButton.enable();
+                } else {
+                    redoButton.disable();
+                }
+
+            }.bind(this));
+        }
 
         this._addButton('addTopics', true, false, function () {
             designer.createChildForSelectedNode();
@@ -442,6 +459,9 @@ mindplot.widget.Menu = new Class({
             var rels = designer.getModel().filterSelectedRelationships();
 
             this._toolbarElems.each(function (button) {
+                var buttonId = button.getButtonId();
+                if (buttonId != "undoEdition" && buttonId != "redoEdition") {
+
                     var disable = false;
                     if (button.isTopicAction() && button.isRelAction()) {
                         disable = rels.length == 0 && topics.length == 0;
@@ -459,7 +479,7 @@ mindplot.widget.Menu = new Class({
                     } else {
                         button.enable();
                     }
-
+                }
             })
         }.bind(this));
 
@@ -468,6 +488,9 @@ mindplot.widget.Menu = new Class({
             var rels = designer.getModel().filterSelectedRelationships();
 
             this._toolbarElems.each(function (button) {
+                var buttonId = button.getButtonId();
+                if (buttonId != "undoEdition" && buttonId != "redoEdition") {
+
                     if (button.isTopicAction() && topics.length > 0) {
                         button.enable();
                     }
@@ -475,12 +498,14 @@ mindplot.widget.Menu = new Class({
                     if (button.isRelAction() && rels.length > 0) {
                         button.enable();
                     }
+                }
             })
         }.bind(this));
     },
 
     _addButton:function (buttonId, topic, rel, fn) {
         // Register Events ...
+        var result = null;
         if ($(buttonId)) {
 
             var button = new mindplot.widget.ToolbarItem(buttonId, function (event) {
@@ -489,7 +514,9 @@ mindplot.widget.Menu = new Class({
             }.bind(this), {topicAction:topic, relAction:rel});
 
             this._toolbarElems.push(button);
+            result = button;
         }
+        return result;
     },
 
     _registerTooltip:function (buttonId, text, shortcut) {

mindplot/src/main/javascript/widget/ToolbarItem.js

@@ -55,6 +55,10 @@ mindplot.widget.ToolbarItem = new Class({
         return elem;
     }.protect(),
 
+    getButtonId : function(){
+      return this._buttonId;
+    },
+
     show : function() {
         this.fireEvent('show');
     },