Elim cr_elements/v1_0 subdirectory

ui/webui/resources/cr_elements/v1_0/cr_events/cr_events.js

-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-/**
- * @fileoverview
- * `cr-events` provides helpers for handling events in Chrome Polymer elements.
- *
- * Example:
- *
- *    <cr-events id="events"></cr-events>
- *
- * Usage:
- *
- *    this.$.events.forward(this.$.element, ['change']);
- *
- * @element cr-events
- */
-Polymer({
-  is: 'cr-events',
-
-  /**
-   * Sets up an element to forward events across the shadow boundary, for events
-   * which normally stop at the root node (see http://goo.gl/WGMO9x).
-   * @param {!HTMLElement} element The element to forward events from.
-   * @param {!Array<string>} events The events to forward.
-   */
-  forward: function(element, events) {
-    for (var i = 0; i < events.length; i++)
-      element.addEventListener(events[i], this.forwardEvent_);
-  },
-
-  /**
-   * Forwards events that don't automatically cross the shadow boundary
-   * if the event should bubble.
-   * @param {!Event} e The event to forward.
-   * @param {*} detail Data passed when initializing the event.
-   * @param {Node=} opt_sender Node that declared the handler.
-   * @private
-   */
-  forwardEvent_: function(e, detail, opt_sender) {
-    if (!e.bubbles)
-      return;
-
-    var node = e.path[e.path.length - 1];
-    if (node instanceof ShadowRoot) {
-      // Forward the event to the shadow host.
-      e.stopPropagation();
-      node.host.fire(e.type, detail, node.host, true, e.cancelable);
-    }
-  },
-});