Change how events are handled in Effen

sky/framework/components/drawer.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.
 
 import '../animation/animated_value.dart';
 import '../animation/curves.dart';
 import '../fn.dart';
 import '../theme/colors.dart';
 import '../theme/shadows.dart';
 import 'dart:async';
@@ skipping 97 matching lines @@
   DrawerController controller;
 
   AnimatedValueListener _position;
 
   Drawer({
     Object key,
     this.controller,
     this.children,
     this.level: 0
   }) : super(key: key) {
-    events.listen('pointerdown', controller.handlePointerDown);
-    events.listen('pointermove', controller.handlePointerMove);
-    events.listen('pointerup', controller.handlePointerUp);
-    events.listen('pointercancel', controller.handlePointerCancel);
     _position = new AnimatedValueListener(this, controller.position);
   }
 
   void didUnmount() {
     _position.stopListening();
   }
 
   Node build() {
     _position.ensureListening();
 
     bool isClosed = _position.value <= -_kWidth;
     String inlineStyle = 'display: ${isClosed ? 'none' : ''}';
     String maskInlineStyle = 'opacity: ${(_position.value / _kWidth + 1) * 0.5}';
     String contentInlineStyle = 'transform: translateX(${_position.value}px)';
 
-    Container mask = new Container(
-      key: 'Mask',
-      style: _maskStyle,
-      inlineStyle: maskInlineStyle
-    )..events.listen('gesturetap', controller.handleMaskTap)
-     ..events.listen('gestureflingstart', controller.handleFlingStart);
+    var mask = new EventTarget(
+      new Container(
+        key: 'Mask',
+        style: _maskStyle,
+        inlineStyle: maskInlineStyle
+      ),
+      onGestureTap: controller.handleMaskTap,
+      onGestureFlingStart: controller.handleFlingStart
+    );
 
     Material content = new Material(
       key: 'Content',
       style: _contentStyle,
       inlineStyle: contentInlineStyle,
       children: children,
       level: level
     );
 
-    return new Container(
-      style: _style,
-      inlineStyle: inlineStyle,
-      children: [ mask, content ]
+    return new EventTarget(
+      new Container(
+        style: _style,
+        inlineStyle: inlineStyle,
+        children: [ mask, content ]
+      ),
+      onPointerDown: controller.handlePointerDown,
+      onPointerMove: controller.handlePointerMove,
+      onPointerUp: controller.handlePointerUp,
+      onPointerCancel: controller.handlePointerCancel
     );
   }
 }