| Index: chrome/browser/resources/shared/js/event_tracker.js
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| ===================================================================
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| --- chrome/browser/resources/shared/js/event_tracker.js (revision 177292)
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| +++ chrome/browser/resources/shared/js/event_tracker.js (working copy)
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| @@ -1,97 +0,0 @@
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| -// Copyright (c) 2011 The Chromium Authors. All rights reserved.
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| -// Use of this source code is governed by a BSD-style license that can be
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| -// found in the LICENSE file.
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| -
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| -/** @fileoverview EventTracker is a simple class that manages the addition and
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| - * removal of DOM event listeners. In particular, it keeps track of all
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| - * listeners that have been added and makes it easy to remove some or all of
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| - * them without requiring all the information again. This is particularly
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| - * handy when the listener is a generated function such as a lambda or the
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| - * result of calling Function.bind.
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| - */
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| -
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| -// Use an anonymous function to enable strict mode just for this file (which
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| -// will be concatenated with other files when embedded in Chrome)
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| -var EventTracker = (function() {
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| - 'use strict';
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| -
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| - /**
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| - * Create an EventTracker to track a set of events.
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| - * EventTracker instances are typically tied 1:1 with other objects or
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| - * DOM elements whose listeners should be removed when the object is disposed
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| - * or the corresponding elements are removed from the DOM.
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| - * @constructor
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| - */
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| - function EventTracker() {
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| - /**
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| - * @type {Array.<EventTracker.Entry>}
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| - * @private
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| - */
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| - this.listeners_ = [];
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| - }
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| -
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| - /**
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| - * The type of the internal tracking entry.
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| - * @typedef {{node: !Node,
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| - * eventType: string,
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| - * listener: Function,
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| - * capture: boolean}}
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| - */
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| - EventTracker.Entry;
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| -
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| - EventTracker.prototype = {
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| - /**
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| - * Add an event listener - replacement for Node.addEventListener.
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| - * @param {!Node} node The DOM node to add a listener to.
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| - * @param {string} eventType The type of event to subscribe to.
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| - * @param {Function} listener The listener to add.
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| - * @param {boolean} capture Whether to invoke during the capture phase.
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| - */
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| - add: function(node, eventType, listener, capture) {
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| - var h = {
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| - node: node,
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| - eventType: eventType,
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| - listener: listener,
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| - capture: capture
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| - };
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| - this.listeners_.push(h);
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| - node.addEventListener(eventType, listener, capture);
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| - },
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| -
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| - /**
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| - * Remove any specified event listeners added with this EventTracker.
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| - * @param {!Node} node The DOM node to remove a listener from.
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| - * @param {?string} eventType The type of event to remove.
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| - */
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| - remove: function(node, eventType) {
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| - this.listeners_ = this.listeners_.filter(function(h) {
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| - if (h.node == node && (!eventType || (h.eventType == eventType))) {
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| - EventTracker.removeEventListener_(h);
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| - return false;
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| - }
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| - return true;
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| - });
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| - },
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| -
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| - /**
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| - * Remove all event listeners added with this EventTracker.
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| - */
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| - removeAll: function() {
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| - this.listeners_.forEach(EventTracker.removeEventListener_);
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| - this.listeners_ = [];
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| - }
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| - };
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| -
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| - /**
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| - * Remove a single event listener given it's tracker entry. It's up to the
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| - * caller to ensure the entry is removed from listeners_.
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| - * @param {EventTracker.Entry} h The entry describing the listener to remove.
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| - * @private
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| - */
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| - EventTracker.removeEventListener_ = function(h) {
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| - h.node.removeEventListener(h.eventType, h.listener, h.capture);
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| - };
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| -
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| - return EventTracker;
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| -})();
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| -
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