Compile print_preview, part 2: reduce down to 260 errors

ui/webui/resources/js/event_tracker.js

 // Copyright (c) 2011 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 EventTracker is a simple class that manages the addition and
  * removal of DOM event listeners. In particular, it keeps track of all
  * listeners that have been added and makes it easy to remove some or all of
  * them without requiring all the information again. This is particularly handy
  * when the listener is a generated function such as a lambda or the result of
  * calling Function.bind.
  */
 
 /**
  * The type of the internal tracking entry. TODO(dbeam): move this back to
  * EventTracker.Entry when https://github.com/google/closure-compiler/issues/544
  * is fixed.
- * @typedef {{node: !Node,
+ * @typedef {{target: !EventTarget,
  *            eventType: string,
  *            listener: Function,
  *            capture: boolean}}
  */
 var EventTrackerEntry;
 
 /**
  * Create an EventTracker to track a set of events.
  * EventTracker instances are typically tied 1:1 with other objects or
  * DOM elements whose listeners should be removed when the object is disposed
  * or the corresponding elements are removed from the DOM.
  * @constructor
  */
 function EventTracker() {
   /**
    * @type {Array.<EventTrackerEntry>}
    * @private
    */
   this.listeners_ = [];
 }
 
 EventTracker.prototype = {
   /**
    * Add an event listener - replacement for Node.addEventListener.

[Dan Beam, 2014/09/23 20:19:59]

EventTarget.addEventListener,
https://developer.mozilla.org/en-US/docs/Web/API/EventTarget.addEventListener

[Vitaly Pavlenko, 2014/09/23 22:26:02]

Done.

-   * @param {!Node} node The DOM node to add a listener to.
+   * @param {!EventTarget} target The DOM target to add a listener to.
    * @param {string} eventType The type of event to subscribe to.
    * @param {EventListener|Function} listener The listener to add.
    * @param {boolean=} opt_capture Whether to invoke during the capture phase.
    */
-  add: function(node, eventType, listener, opt_capture) {
+  add: function(target, eventType, listener, opt_capture) {
     var capture = !!opt_capture;
     var h = {
-      node: node,
+      target: target,
       eventType: eventType,
       listener: listener,
       capture: capture,
     };
     this.listeners_.push(h);
-    node.addEventListener(eventType, listener, capture);
+    target.addEventListener(eventType, listener, capture);
   },
 
   /**
    * Remove any specified event listeners added with this EventTracker.
-   * @param {!Node} node The DOM node to remove a listener from.
+   * @param {!EventTarget} target The DOM target to remove a listener from.
    * @param {?string} eventType The type of event to remove.
    */
-  remove: function(node, eventType) {
+  remove: function(target, eventType) {
     this.listeners_ = this.listeners_.filter(function(h) {
-      if (h.node == node && (!eventType || (h.eventType == eventType))) {
+      if (h.target == target && (!eventType || (h.eventType == eventType))) {
         EventTracker.removeEventListener_(h);
         return false;
       }
       return true;
     });
   },
 
   /**
    * Remove all event listeners added with this EventTracker.
    */
   removeAll: function() {
     this.listeners_.forEach(EventTracker.removeEventListener_);
     this.listeners_ = [];
   }
 };
 
 /**
  * Remove a single event listener given it's tracking entry. It's up to the
  * caller to ensure the entry is removed from listeners_.
  * @param {EventTrackerEntry} h The entry describing the listener to remove.
  * @private
  */
 EventTracker.removeEventListener_ = function(h) {
-  h.node.removeEventListener(h.eventType, h.listener, h.capture);
+  h.target.removeEventListener(h.eventType, h.listener, h.capture);
 };