black list for clone function. fix #583

src/Node.js

@@ -22,6 +22,7 @@
         TRANSFORM = 'transform',
         UPPER_STAGE = 'Stage',
         VISIBLE = 'visible',
+        CLONE_BLACK_LIST = ['id'],
 
         TRANSFORM_CHANGE_STR = [
             'xChange.kinetic',
@@ -36,6 +37,7 @@
             'transformsEnabledChange.kinetic'
         ].join(SPACE);
 
+
     Kinetic.Util.addMethods(Kinetic.Node, {
         _init: function(config) {
             var that = this;
@@ -1181,9 +1183,14 @@
         clone: function(obj) {
             // instantiate new node
             var className = this.getClassName(),
-                node = new Kinetic[className](this.attrs),
+                attrs = this.attrs,
                 key, allListeners, len, n, listener;
-
+            // filter black attrs
+            for (var i in CLONE_BLACK_LIST) {
+                var blockAttr = CLONE_BLACK_LIST[i];
+                delete attrs[blockAttr];
+            }
+            var node = new Kinetic[className](attrs);
             // copy over listeners
             for(key in this.eventListeners) {
                 allListeners = this.eventListeners[key];

test/unit/Node-test.js

@@ -416,7 +416,8 @@ suite('Node', function() {
             shadowOffsetX: 20,
             shadowOffsetY: 20,
             draggable: true,
-            name: 'myRect'
+            name: 'myRect',
+            id : 'myRect'
         });
 
         var clicks = [];
@@ -439,6 +440,8 @@ suite('Node', function() {
         assert.equal(rect.getShadowColor(), 'black');
         assert.equal(clone.getShadowColor(), 'black');
 
+        assert.equal(clone.id() == undefined, true, 'do not clone id');
+
         clone.setShadowColor('green');
 
         /*