Merge pull request #581 from kevmoo/polymer

lib/event.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.
-
-library polymer.event;
-
-import 'dart:html';
-import 'package:custom_element/custom_element.dart';
-
-/**
- * *Warning*: this is an implementation helper and should not be used in your
- * code. This method will be replaced in favor of calling to the handler
- * via mirrors.
- *
- * Register an event handler.
- */
-void registerEventHandler(String query, void registerEvent(Node node)) {
-  if (_eventHandlers == null) {
-    _eventHandlers = {};
-    CustomElement.templateCreated.add(_hookEvents);
-  }
-  if (_eventHandlers.containsKey(query)) {
-    throw new ArgumentError('duplicate event handler selector $query');
-  }
-  _eventHandlers[query] = registerEvent;
-}
-
-void _hookEvents(DocumentFragment fragment) {
-  _eventHandlers.forEach((query, hookEvent) {
-    for (var node in fragment.queryAll(query)) {
-      hookEvent(node);
-    }
-  });
-}
-
-Map<String, Function> _eventHandlers;