Continue updating MDV.

pkg/mdv/lib/src/bindings.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 part of mdv;
 
 // This code is a port of Model-Driven-Views:
 // https://github.com/polymer-project/mdv
 // The code mostly comes from src/template_element.js
 
@@ skipping 14 matching lines @@
   void valueChanged(newValue);
 
   void updateBinding(e);
 
   void unbind() {
     binding = null;
     _pathSub.cancel();
     _eventSub.cancel();
   }
 
+  static EventStreamProvider<Event> _checkboxEventType = () {
+    // Attempt to feature-detect which event (change or click) is fired first
+    // for checkboxes.
+    var div = new DivElement();
+    var checkbox = div.append(new InputElement());
+    checkbox.type = 'checkbox';
+    var fired = [];
+    checkbox.onClick.listen((e) {
+      fired.add(Element.clickEvent);
+    });
+    checkbox.onChange.listen((e) {
+      fired.add(Element.changeEvent);
+    });
+    checkbox.dispatchEvent(new MouseEvent('click', view: window));
+    // WebKit/Blink don't fire the change event if the element is outside the
+    // document, so assume 'change' for that case.
+    return fired.length == 1 ? Element.changeEvent : fired.first;
+  }();
 
   static Stream<Event> _getStreamForInputType(InputElement element) {
     switch (element.type) {
       case 'checkbox':
-        return element.onClick;
+        return _checkboxEventType.forTarget(element);
       case 'radio':
       case 'select-multiple':
       case 'select-one':
         return element.onChange;
       default:
         return element.onInput;
     }
   }
 }
 
@@ skipping 436 matching lines @@
         nodeExt._templateIterator = null;
       }
     }
 
     _Bindings._nodeOrCustom(node).unbindAll();
     for (var c = node.firstChild; c != null; c = c.nextNode) {
       _unbindAllRecursively(c);
     }
   }
 }