third_party/WebKit/Source/devtools/front_end/ui/DropDownMenu.js

   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.
   4
   5 /**
   6  * @constructor
   7  * @extends {WebInspector.Object}
   8  * @param {!Element} element
   9  */
  10 WebInspector.DropDownMenu = function(element)
  11 {
  12     /** @type {!Array.<!WebInspector.DropDownMenu.Item>} */
  13     this._items = [];
  14
  15     element.addEventListener("mousedown", this._onMouseDown.bind(this));
  16 }
  17
  18 /** @typedef {{id: string, title: string}} */
  19 WebInspector.DropDownMenu.Item;
  20
  21 /** @enum {string} */
  22 WebInspector.DropDownMenu.Events = {
  23     ItemSelected: "ItemSelected"
  24 }
  25
  26 WebInspector.DropDownMenu.prototype = {
  27     /**
  28      * @param {!Event} event
  29      */
  30     _onMouseDown: function(event)
  31     {
  32         if (event.which !== 1)
  33             return;
  34         var menu = new WebInspector.ContextMenu(event);
  35         for (var item of this._items)
  36             menu.appendCheckboxItem(item.title, this._itemHandler.bind(this, item.id), item.id === this._selectedItemId);
  37         menu.show();
  38     },
  39
  40     /**
  41      * @param {string} id
  42      */
  43     _itemHandler: function(id)
  44     {
  45         this.dispatchEventToListeners(WebInspector.DropDownMenu.Events.ItemSelected, id);
  46     },
  47
  48     /**
  49      * @param {string} id
  50      * @param {string} title
  51      */
  52     addItem: function(id, title)
  53     {
  54         this._items.push({id: id, title: title});
  55     },
  56
  57     /**
  58      * @param {string} id
  59      */
  60     selectItem: function(id)
  61     {
  62         this._selectedItemId = id;
  63     },
  64
  65     clear: function()
  66     {
  67         this._items = [];
  68         delete this._selectedItemId;
  69     },
  70
  71     __proto__: WebInspector.Object.prototype
  72 }