"Reverting 36191"

tools/dom/src/dartium_WrappedEvent.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.html;
-
-/**
- * Helper class to implement custom events which wrap DOM events.
- */
-class _WrappedEvent implements Event {
-  final Event wrapped;
-
-  /** The CSS selector involved with event delegation. */
-  String _selector;
-
-  _WrappedEvent(this.wrapped);
-
-  bool get bubbles => wrapped.bubbles;
-
-  bool get cancelable => wrapped.cancelable;
-
-  DataTransfer get clipboardData => wrapped.clipboardData;
-
-  EventTarget get currentTarget => wrapped.currentTarget;
-
-  bool get defaultPrevented => wrapped.defaultPrevented;
-
-  int get eventPhase => wrapped.eventPhase;
-
-  EventTarget get target => wrapped.target;
-
-  int get timeStamp => wrapped.timeStamp;
-
-  String get type => wrapped.type;
-
-  void _initEvent(String eventTypeArg, bool canBubbleArg,
-      bool cancelableArg) {
-    throw new UnsupportedError(
-        'Cannot initialize this Event.');
-  }
-
-  void preventDefault() {
-    wrapped.preventDefault();
-  }
-
-  void stopImmediatePropagation() {
-    wrapped.stopImmediatePropagation();
-  }
-
-  void stopPropagation() {
-    wrapped.stopPropagation();
-  }
-
-  /**
-   * A pointer to the element whose CSS selector matched within which an event
-   * was fired. If this Event was not associated with any Event delegation,
-   * accessing this value will throw an [UnsupportedError].
-   */
-  Element get matchingTarget {
-    if (_selector == null) {
-      throw new UnsupportedError('Cannot call matchingTarget if this Event did'
-          ' not arise as a result of event delegation.');
-    }
-    var currentTarget = this.currentTarget;
-    var target = this.target;
-    var matchedTarget;
-    do {
-      if (target.matches(_selector)) return target;
-      target = target.parent;
-    } while (target != null && target != currentTarget.parent);
-    throw new StateError('No selector matched for populating matchedTarget.');
-  }
-
-  /**
-   * This event's path, taking into account shadow DOM.
-   *
-   * ## Other resources
-   *
-   * * [Shadow DOM extensions to Event]
-   * (http://w3c.github.io/webcomponents/spec/shadow/#extensions-to-event) from
-   * W3C.
-   */
-  // https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html#extensions-to-event
-  @Experimental()
-  List<Node> get path => wrapped.path;
-}