Revert "Revert "Dart2js support for custom element lifecycle events""

tools/dom/src/dart2js_CustomElementSupport.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 dart.dom.html;
 
 _callCreated(receiver) {
   return receiver.created();
 }
 
-_makeCreatedCallbackMethod() {
+_callEnteredView(receiver) {
+  return receiver.enteredView();
+}
+
+_callLeftView(receiver) {
+  return receiver.leftView();
+}
+
+_makeCallbackMethod(callback) {
   return JS('',
       '''((function(invokeCallback) {
              return function() {
                return invokeCallback(this);
              };
           })(#))''',
-      convertDartClosureToJS(_callCreated, 1));
+      convertDartClosureToJS(callback, 1));
 }
 
 const _typeNameToTag = const {
   'HTMLAnchorElement': 'a',
   'HTMLAudioElement': 'audio',
   'HTMLButtonElement': 'button',
   'HTMLCanvasElement': 'canvas',
   'HTMLDivElement': 'div',
   'HTMLImageElement': 'img',
   'HTMLInputElement': 'input',
@@ skipping 41 matching lines @@
   String baseClassName = findDispatchTagForInterceptorClass(interceptorClass);
   if (baseClassName == null) {
     throw new ArgumentError(type);
   }
   if (baseClassName == 'Element') baseClassName = 'HTMLElement';
 
   var baseConstructor = JS('=Object', '#[#]', context, baseClassName);
 
   var properties = JS('=Object', '{}');
 
-  var jsCreatedCallback = _makeCreatedCallbackMethod();
+  JS('void', '#.createdCallback = #', properties,
+      JS('=Object', '{value: #}', _makeCallbackMethod(_callCreated)));
+  JS('void', '#.enteredViewCallback = #', properties,
+      JS('=Object', '{value: #}', _makeCallbackMethod(_callEnteredView)));
+  JS('void', '#.leftViewCallback = #', properties,
+      JS('=Object', '{value: #}', _makeCallbackMethod(_callLeftView)));
 
-  JS('void', '#.createdCallback = #', properties,
-      JS('=Object', '{value: #}', jsCreatedCallback));
+  // TODO(blois): Bug 13220- remove once transition is complete
+  JS('void', '#.enteredDocumentCallback = #', properties,
+      JS('=Object', '{value: #}', _makeCallbackMethod(_callEnteredView)));
+  JS('void', '#.leftDocumentCallback = #', properties,
+      JS('=Object', '{value: #}', _makeCallbackMethod(_callLeftView)));
 
   var baseProto = JS('=Object', '#.prototype', baseConstructor);
   var proto = JS('=Object', 'Object.create(#, #)', baseProto, properties);
 
   var interceptor = JS('=Object', '#.prototype', interceptorClass);
 
   setNativeSubclassDispatchRecord(proto, interceptor);
 
   var options = JS('=Object', '{prototype: #}', proto);
 
   if (baseClassName != 'HTMLElement') {
     if (extendsTagName != null) {
       JS('=Object', '#.extends = #', options, extendsTagName);
     } else if (_typeNameToTag.containsKey(baseClassName)) {
       JS('=Object', '#.extends = #', options, _typeNameToTag[baseClassName]);
     }
   }
 
   JS('void', '#.register(#, #)', document, tag, options);
 }