Dispatch events to fn nodes for each RenderObject that the event goes through, instead of starting …

sky/sdk/lib/framework/fn2.dart

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 library fn;
 
 import 'app.dart';
 import 'dart:async';
 import 'dart:collection';
 import 'dart:mirrors';
@@ skipping 1043 matching lines @@
 
     if (transform != null)
       current = new Transform(transform: transform, child: current);
 
     return current;
   }
 
 }
 
 class _AppView extends AppView {
+
   _AppView() : super(null);
 
   void dispatchEvent(sky.Event event, HitTestResult result) {
     super.dispatchEvent(event, result);
-
-    UINode target = RenderObjectWrapper._getMounted(result.path.first.target);
-
-    // TODO(rafaelw): StopPropagation?
-    while (target != null) {
-      if (target is EventListenerNode)
-        target._handleEvent(event);
-      target = target._parent;
+    for (HitTestEntry entry in result.path.reversed) {
+      UINode target = RenderObjectWrapper._getMounted(entry.target);
+      if (target == null)
+        continue;
+      RenderObject targetRoot = target.root;
+      while (target != null && target.root == targetRoot) {
+        if (target is EventListenerNode)
+          target._handleEvent(event);
+        target = target._parent;
+      }      
     }
   }
+
 }
 
 abstract class App extends Component {
 
   App() : super(stateful: true) {
     _appView = new _AppView();
     _scheduleComponentForRender(this);
     _mounted = true;
   }
 
@@ skipping 10 matching lines @@
   }
 
 }
 
 class Text extends Component {
   Text(this.data) : super(key: '*text*');
   final String data;
   bool get interchangeable => true;
   UINode build() => new Paragraph(text: data);
 }