2 files changed, 84 insertions, 42 deletions

diff --git a/js/helper-classes/3D/draw-utils.js b/js/helper-classes/3D/draw-utils.js
index d6334e6c..a5428ea3 100755
--- a/js/helper-classes/3D/draw-utils.js
+++ b/js/helper-classes/3D/draw-utils.js
@@ -109,10 +109,10 @@ var DrawUtils = exports.DrawUtils = Montage.create(Component, {
                         this._gridOrigin = [0,0];       // 2D plane space point
 
             this.eventManager.addEventListener("elementAdded", this, false);
-            this.eventManager.addEventListener("elementDeleted", this, false);
-            this.eventManager.addEventListener("deleteSelection", this, false);
+            this.eventManager.addEventListener("elementsRemoved", this, false);
             this.eventManager.addEventListener("elementChange", this, false);
             this.eventManager.addEventListener("closeDocument", this, false);
+            this.eventManager.addEventListener("elementReplaced", this, false);
                 }
         },
 
@@ -147,38 +147,75 @@ var DrawUtils = exports.DrawUtils = Montage.create(Component, {
 
     handleElementAdded: {
         value: function(event) {
-            this.addElement(event.detail);
+            var elements = event.detail;
+
+            if(Array.isArray(elements)) {
+                elements.forEach(function(element) {
+                    this.addElement(element);
+                }, this);
+            } else {
+                this.addElement(elements);
+            }
+
             this.drawWorkingPlane();
         }
     },
 
-    handleElementDeleted: {
+    handleElementsRemoved: {
         value: function(event) {
-            this.removeElement(event.detail);
+            var elements = event.detail;
+
+            if(Array.isArray(elements)) {
+                elements = Array.prototype.slice.call(elements, 0);
+                elements.forEach(function(element) {
+                    this.removeElement(element);
+                }, this);
+            } else {
+                this.removeElement(elements);
+            }
+
+            this.drawWorkingPlane();
         }
     },
 
-    handleDeleteSelection: {
+    handleElementReplaced: {
         value: function(event) {
-            this.drawWorkingPlane();
+            var oldElement = event.detail.data.oldChild;
+            var newElement = event.detail.data.newChild;
+
+            // check if we already know about this object
+            var n = this._eltArray.length,
+                plane;
+            for (var i=0;  i<n;  i++) {
+                if (oldElement === this._eltArray[i]) {
+                    this._eltArray[i] = newElement;
+                    plane = this._planesArray[i];
+                    break;
+                }
+            }
+
+            if(!plane) {
+                this._eltArray.push( newElement );
+                plane = Object.create(this.ElementPlanes, {});
+                this._planesArray.push( plane );
+            }
+
+            plane.setElement( newElement );
+            plane.init();
+            newElement.elementModel.props3D.elementPlane = plane;
         }
     },
 
     _shouldUpdatePlanes: {
         value: function(props) {
-            if(!props)
-            {
+            if(!props) {
                 return false;
-            }
-            else if (typeof props === "string")
-            {
+            } else if (typeof props === "string") {
                 return (this._updatePlaneProps.indexOf(props) !== -1);
             }
 
-            for (var p in props)
-            {
-                if(this._updatePlaneProps.indexOf(p) !== -1)
-                {
+            for (var p in props) {
+                if(this._updatePlaneProps.indexOf(p) !== -1) {
                     return true;
                 }
             }
@@ -199,15 +236,12 @@ var DrawUtils = exports.DrawUtils = Montage.create(Component, {
             {
                 var len = els.length,
                     i = 0,
-                    item,
-                    el;
+                    item;
 
                 for(i=0; i < len; i++) {
-                    item = els[i];
-                    el = item._element || item;
-                    if(el.elementModel.props3D.elementPlane)
+                    if(els[i].elementModel.props3D.elementPlane)
                     {
-                        el.elementModel.props3D.elementPlane.init();
+                        els[i].elementModel.props3D.elementPlane.init();
                     }
                 }
 
@@ -222,17 +256,12 @@ var DrawUtils = exports.DrawUtils = Montage.create(Component, {
         // Methods
         ///////////////////////////////////////////////////////////////////////
 
-        addElement:
-        {
-                value: function( elt )
-                {
+        addElement: {
+                value: function( elt ) {
                         // check if we already know about this object
                         var n = this._eltArray.length;
-                        for (var i=0;  i<n;  i++)
-                        {
-                                if (elt == this._eltArray[i])
-                                {
-//                                      console.log( "element already added to stage display: " + elt.id );
+                        for (var i=0;  i<n;  i++) {
+                                if (elt == this._eltArray[i]) {
                                         return;
                                 }
                         }
@@ -248,17 +277,14 @@ var DrawUtils = exports.DrawUtils = Montage.create(Component, {
                 }
         },
 
-        removeElement : {
-                value: function( elt ) {
+    removeElement: {
+        value: function(element) {
                         // check if object exists
-                        var n = this._eltArray.length;
-                        for (var i=0;  i<n;  i++)
-                        {
-                                if (elt == this._eltArray[i])
-                                {
+                        var _elements = this._eltArray.length;
+                        for (var i=0;  i < _elements;  i++) {
+                                if (element === this._eltArray[i]) {
                                         // First remove the planes for this element
                                         this._planesArray.splice(i, 1);
-
                                         // Then remove the element
                                         this._eltArray.splice(i, 1);
 
diff --git a/js/helper-classes/3D/snap-manager.js b/js/helper-classes/3D/snap-manager.js
index 5b467b41..a401c363 100755
--- a/js/helper-classes/3D/snap-manager.js
+++ b/js/helper-classes/3D/snap-manager.js
@@ -123,7 +123,8 @@ var SnapManager = exports.SnapManager = Montage.create(Component, {
         ///////////////////////////////////////////////////////////////////////
     initialize: {
         value: function() {
-            this.eventManager.addEventListener("elementDeleted", this, false);
+            this.eventManager.addEventListener("elementsRemoved", this, false);
+            this.eventManager.addEventListener("elementReplaced", this, false);
         }
     },
 
@@ -163,12 +164,26 @@ var SnapManager = exports.SnapManager = Montage.create(Component, {
     },
 
 
-    handleElementDeleted: {
+    handleElementsRemoved: {
         value: function(event) {
-            this.removeElementFrom2DCache(event.detail);
+            var self = this, elements = event.detail;
+
+            if(Array.isArray(elements)) {
+                elements = Array.prototype.slice.call(elements, 0);
+                elements.forEach(function(element) {
+                    self.removeElementFrom2DCache(element);
+                });
+            } else {
+                this.removeElementFrom2DCache(elements);
+            }
         }
     },
 
+    handleElementReplaced: {
+        value: function(event) {
+            this._isCacheInvalid = true;