src/chrome/browser/resources/file_manager/foreground/js/file_operation_manager_wrapper.js

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 'use strict';
   6
   7 /**
   8  * While FileOperationManager is run in the background page, this class is
   9  * used to communicate with it.
  10  * @param {DOMWindow} backgroundPage Window object of the background page.
  11  * @constructor
  12  */
  13 function FileOperationManagerWrapper(backgroundPage) {
  14   this.fileOperationManager_ =
  15       backgroundPage.FileOperationManager.getInstance();
  16 }
  17
  18 /**
  19  * Create a new instance or get existing instance of FCMW.
  20  * @param {DOMWindow} backgroundPage Window object of the background page.
  21  * @return {FileOperationManagerWrapper}  FileOperationManagerWrapper instance.
  22  */
  23 FileOperationManagerWrapper.getInstance = function(backgroundPage) {
  24   if (!FileOperationManagerWrapper.instance_)
  25     FileOperationManagerWrapper.instance_ =
  26         new FileOperationManagerWrapper(backgroundPage);
  27
  28   return FileOperationManagerWrapper.instance_;
  29 };
  30
  31 /**
  32  * @return {boolean} True if there is a running task.
  33  */
  34 FileOperationManagerWrapper.prototype.isRunning = function() {
  35   return this.fileOperationManager_.hasQueuedTasks();
  36 };
  37
  38 /**
  39  * Decorates a FileOperationManager method, so it will be executed after
  40  * initializing the FileOperationManager instance in background page.
  41  * @param {string} method The method name.
  42  */
  43 FileOperationManagerWrapper.decorateAsyncMethod = function(method) {
  44   FileOperationManagerWrapper.prototype[method] = function() {
  45     this.fileOperationManager_[method].apply(
  46         this.fileOperationManager_, arguments);
  47   };
  48 };
  49
  50 FileOperationManagerWrapper.decorateAsyncMethod('paste');
  51 FileOperationManagerWrapper.decorateAsyncMethod('deleteEntries');
  52 FileOperationManagerWrapper.decorateAsyncMethod('forceDeleteTask');
  53 FileOperationManagerWrapper.decorateAsyncMethod('cancelDeleteTask');
  54 FileOperationManagerWrapper.decorateAsyncMethod('zipSelection');
  55 FileOperationManagerWrapper.decorateAsyncMethod('addEventListener');
  56 FileOperationManagerWrapper.decorateAsyncMethod('removeEventListener');