Revert "Revert "Start of dartium custom element lifecycle event support.""

tools/dom/src/native_DOMImplementation.dart

 // Copyright (c) 2012, 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 html;
 
 class _ConsoleVariables {
   Map<String, Object> _data = new Map<String, Object>();
-  
+
   /**
    * Forward member accesses to the backing JavaScript object.
    */
   noSuchMethod(Invocation invocation) {
     String member = MirrorSystem.getName(invocation.memberName);
     if (invocation.isGetter) {
       return _data[member];
     } else if (invocation.isSetter) {
       assert(member.endsWith('='));
       member = member.substring(0, member.length - 1);
       _data[member] = invocation.positionalArguments[0];
     } else {
       return Function.apply(_data[member], invocation.positionalArguments, invocation.namedArguments);
     }
   }
-  
+
   void clear() => _data.clear();
 
   /**
    * List all variables currently defined.
    */
   List variables() => _data.keys.toList(growable: false);
 }
 
 class _Utils {
   static double dateTimeToDouble(DateTime dateTime) =>
@@ skipping 50 matching lines @@
   }
 
   static bool isMap(obj) => obj is Map;
 
   static Map createMap() => {};
 
   static makeUnimplementedError(String fileName, int lineNo) {
     return new UnsupportedError('[info: $fileName:$lineNo]');
   }
 
+  static bool isTypeSubclassOf(Type type, Type other) {
+    if (type == other) {
+      return true;
+    }
+    var superclass = reflectClass(type).superclass;
+    if (superclass != null) {
+      return isTypeSubclassOf(superclass.reflectedType, other);
+    }
+    return false;
+  }
+
   static window() native "Utils_window";
   static forwardingPrint(String message) native "Utils_forwardingPrint";
   static void spawnDomFunction(Function f, int replyTo) native "Utils_spawnDomFunction";
   static int _getNewIsolateId() native "Utils_getNewIsolateId";
 
   // The following methods were added for debugger integration to make working
   // with the Dart C mirrors API simpler.
   // TODO(jacobr): consider moving them to a separate library.
   // If Dart supported dynamic code injection, we would only inject this code
   // when the debugger is invoked.
@@ skipping 48 matching lines @@
       // is more convenient to filter it out here than from C++ code.
       // 'this' needs to be handled by calling Dart_EvaluateExpr with
       // 'this' as the target rather than by passing it as an argument.
       if (arg == 'this') return;
       if (args.isNotEmpty) {
         sb.write(", ");
       }
       sb.write("final $arg");
       args[arg] = value;
     }
-    
+
     addArg("\$var", _consoleTempVariables);
-    
+
     for (int i = 0; i < locals.length; i+= 2) {
       addArg(locals[i], locals[i+1]);
     }
-    sb..write(')=>\n$expression'); 
+    sb..write(')=>\n$expression');
     return [sb.toString(), args.values.toList(growable: false)];
   }
 
   /**
    * Convenience helper to get the keys of a [Map] as a [List].
    */
   static List getMapKeyList(Map map) => map.keys.toList();
 
  /**
    * Returns the keys of an arbitrary Dart Map encoded as unique Strings.
    * Keys that are strings are left unchanged except that the prefix ":" is
    * added to disambiguate keys from other Dart members.
    * Keys that are not strings have # followed by the index of the key in the map
    * prepended to disambuguate. This scheme is simplistic but easy to encode and
    * decode. The use case for this method is displaying all map keys in a human
    * readable way in debugging tools.
-   */ 
+   */
   static List<String> getEncodedMapKeyList(dynamic obj) {
     if (obj is! Map) return null;
-    
+
     var ret = new List<String>();
     int i = 0;
     return obj.keys.map((key) {
       var encodedKey;
       if (key is String) {
         encodedKey = ':$key';
       } else {
         // If the key isn't a string, return a guaranteed unique for this map
         // string representation of the key that is still somewhat human
         // readable.
@@ skipping 63 matching lines @@
   // DOM node rather than just a class that extends Node.
   static bool isNode(obj) => obj is Node;
 
   static bool _isBuiltinType(ClassMirror cls) {
     // TODO(vsm): Find a less hackish way to do this.
     LibraryMirror lib = cls.owner;
     String libName = lib.uri.toString();
     return libName.startsWith('dart:');
   }
 
-  static void register(String tag, Type type) {
+  static void register(Document document, String tag, Type type,
+      String extendsTagName) {
     // TODO(vsm): Move these checks into native code.
-    if (type == null) {
-      throw new UnsupportedError("Invalid null type.");
-    }
     ClassMirror cls = reflectClass(type);
     if (_isBuiltinType(cls)) {
       throw new UnsupportedError("Invalid custom element from $libName.");
     }
-    ClassMirror superClass = cls.superclass;
-
-    Symbol objectName = reflectClass(Object).qualifiedName;
-    bool isRoot(ClassMirror cls) =>
-      cls == null || cls.qualifiedName == objectName;
-    // TODO(vsm): Support extending SvgElement as well.
-    Symbol elementName = reflectClass(HtmlElement).qualifiedName;
-    bool isElement(ClassMirror cls) =>
-      cls != null && cls.qualifiedName == elementName;
-
-    ClassMirror nativeClass = _isBuiltinType(superClass) ? superClass : null;
-    while(!isRoot(superClass) && !isElement(superClass)) {
-      superClass = superClass.superclass;
-      if (nativeClass == null && _isBuiltinType(superClass)) {
-        nativeClass = superClass;
-      }
-    }
-
-    if (isRoot(superClass)) {
-      throw new UnsupportedError("Invalid custom element doesn't inherit from HtmlElement.");
-    }
-    _register(tag, type, nativeClass.reflectedType);
+    _register(document, tag, type, extendsTagName);
   }
 
-  static void _register(String tag, Type customType, Type nativeType) native "Utils_register";
+  static void _register(Document document, String tag, Type customType,
+      String extendsTagName) native "Utils_register";
+
+  static Element createElement(Document document, String tagName) native "Utils_createElement";
 }
 
 class _NPObject extends NativeFieldWrapperClass1 {
   _NPObject.internal();
   static _NPObject retrieve(String key) native "NPObject_retrieve";
   property(String propertyName) native "NPObject_property";
   invoke(String methodName, [List args = null]) native "NPObject_invoke";
 }
 
 class _DOMWindowCrossFrame extends NativeFieldWrapperClass1 implements
@@ skipping 201 matching lines @@
   _send(msg) {
     _sendToHelperIsolate(msg, _sendPort);
   }
 
   bool get isActive => _isActive;
 }
 
 get _pureIsolateTimerFactoryClosure =>
     ((int milliSeconds, void callback(Timer time), bool repeating) =>
         new _PureIsolateTimer(milliSeconds, callback, repeating));