Warning when node for Tween is not in layer yet. close #108

CHANGELOG.md

@@ -9,6 +9,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - node@5.10.1, canvas@1.3.14, jsdom@8.5.0 support
 - `Konva.Path` will be filled when it is not closed
 - `Animation.start()` will not not immediate sync draw. This should improve performance a little.
+- Warning when node for `Tween` is not in layer yet.
 
 ## [0.12.4][2016-04-19]
 

konva.js

@@ -10559,9 +10559,15 @@
         this.node = node;
         this._id = idCounter++;
 
+        var layers = node.getLayer() || ((node instanceof Konva.Stage) ? node.getLayers() : null);
+        if (!layers) {
+            Konva.Util.console.error(
+                'Tween constructor have `node` that is not in a layer. Please add node into layer first.'
+            );
+        }
         this.anim = new Konva.Animation(function() {
             that.tween.onEnterFrame();
-        }, node.getLayer() || ((node instanceof Konva.Stage) ? node.getLayers() : null));
+        }, layers);
 
         this.tween = new Tween(key, function(i) {
             that._tweenFunc(i);

src/Tween.js

@@ -172,9 +172,15 @@
         this.node = node;
         this._id = idCounter++;
 
+        var layers = node.getLayer() || ((node instanceof Konva.Stage) ? node.getLayers() : null);
+        if (!layers) {
+            Konva.Util.console.error(
+                'Tween constructor have `node` that is not in a layer. Please add node into layer first.'
+            );
+        }
         this.anim = new Konva.Animation(function() {
             that.tween.onEnterFrame();
-        }, node.getLayer() || ((node instanceof Konva.Stage) ? node.getLayers() : null));
+        }, layers);
 
         this.tween = new Tween(key, function(i) {
             that._tweenFunc(i);