1 // Copyright 2014 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.
7 * Helper class for submenus that should add or remove the parent menu entry
8 * depending on whether or not any child items exist.
13 /** @suppress {duplicate} */
14 var remoting = remoting || {};
17 * @param {remoting.ContextMenuAdapter} adapter
18 * @param {string} title The title of the parent menu item.
19 * @param {boolean} checkable True if the child menus should be checkable.
22 remoting.SubmenuManager = function(adapter, title, checkable) {
23 /** @private {remoting.ContextMenuAdapter} */
24 this.adapter_ = adapter;
25 /** @private {string} */
27 /** @private {boolean} */
28 this.checkable_ = checkable;
29 /** @private {!Object} */
31 /** @private {string} */
36 * Add a submenu item, or update the title of an existing submenu item.
38 * @param {string} id The child id.
39 * @param {string} title The window title.
40 * @return {boolean} True if a new menu item was created, false if an existing
41 * menu item was renamed.
43 remoting.SubmenuManager.prototype.add = function(id, title) {
44 if (id in this.childIds_) {
45 this.adapter_.updateTitle(id, title);
48 this.childIds_[id] = true;
49 this.addOrRemoveParent_();
50 this.adapter_.create(id, title, this.checkable_, this.parentId_);
56 * Remove a submenu item.
58 * @param {string} id The child id.
60 remoting.SubmenuManager.prototype.remove = function(id) {
61 this.adapter_.remove(id);
62 delete this.childIds_[id];
63 this.addOrRemoveParent_();
67 * Remove all submenu items.
69 remoting.SubmenuManager.prototype.removeAll = function() {
70 var submenus = Object.keys(this.childIds_);
71 for (var i = 0; i < submenus.length; ++i) {
72 this.remove(submenus[i]);
77 * Add the parent menu item if it doesn't exist but there are submenus items,
78 * or remove it if it exists but there are no submenus.
82 remoting.SubmenuManager.prototype.addOrRemoveParent_ = function() {
83 if (Object.getOwnPropertyNames(this.childIds_).length != 0) {
84 if (!this.parentId_) {
85 this.parentId_ = base.generateXsrfToken(); // Use a random id
86 this.adapter_.create(this.parentId_, this.title_, false);
90 this.adapter_.remove(this.parentId_);