third_party/WebKit/Source/devtools/front_end/screencast/ScreencastApp.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  * @implements {WebInspector.App}
   8  * @implements {WebInspector.TargetManager.Observer}
   9  */
  10 WebInspector.ScreencastApp = function()
  11 {
  12     this._enabledSetting = WebInspector.settings.createSetting("screencastEnabled", true);
  13     this._toggleButton = new WebInspector.ToolbarButton(WebInspector.UIString("Toggle screencast"), "screencast-toolbar-item");
  14     this._toggleButton.setToggled(this._enabledSetting.get());
  15     this._toggleButton.addEventListener("click", this._toggleButtonClicked, this);
  16     WebInspector.targetManager.observeTargets(this);
  17 };
  18
  19 WebInspector.ScreencastApp.prototype = {
  20     /**
  21      * @param {!Document} document
  22      * @override
  23      */
  24     presentUI: function(document)
  25     {
  26         var rootView = new WebInspector.RootView();
  27
  28         this._rootSplitWidget = new WebInspector.SplitWidget(false, true, "InspectorView.screencastSplitViewState", 300, 300);
  29         this._rootSplitWidget.setVertical(true);
  30         this._rootSplitWidget.setSecondIsSidebar(true);
  31         this._rootSplitWidget.show(rootView.element);
  32         this._rootSplitWidget.hideMain();
  33
  34         this._rootSplitWidget.setSidebarWidget(WebInspector.inspectorView);
  35         WebInspector.inspectorView.showInitialPanel();
  36         rootView.attachToDocument(document);
  37     },
  38
  39     /**
  40      * @override
  41      * @param {!WebInspector.Target} target
  42      */
  43     targetAdded: function(target)
  44     {
  45         if (this._target)
  46             return;
  47         this._target = target;
  48         if (target.hasCapability(WebInspector.Target.Capabilities.CanScreencast)) {
  49             this._screencastView = new WebInspector.ScreencastView(target);
  50             this._rootSplitWidget.setMainWidget(this._screencastView);
  51             this._screencastView.initialize();
  52         } else {
  53             this._toggleButton.setEnabled(false);
  54         }
  55         this._onScreencastEnabledChanged();
  56     },
  57
  58     /**
  59      * @override
  60      * @param {!WebInspector.Target} target
  61      */
  62     targetRemoved: function(target)
  63     {
  64         if (this._target === target) {
  65             delete this._target;
  66             if (!this._screencastView)
  67                 return;
  68             this._toggleButton.setEnabled(false);
  69             this._screencastView.detach();
  70             delete this._screencastView;
  71             this._onScreencastEnabledChanged();
  72         }
  73     },
  74
  75     _toggleButtonClicked: function()
  76     {
  77         var enabled = !this._toggleButton.toggled();
  78         this._enabledSetting.set(enabled);
  79         this._onScreencastEnabledChanged();
  80     },
  81
  82     _onScreencastEnabledChanged: function()
  83     {
  84         if (!this._rootSplitWidget)
  85             return;
  86         var enabled = this._enabledSetting.get() && this._screencastView;
  87         this._toggleButton.setToggled(enabled);
  88         if (enabled)
  89             this._rootSplitWidget.showBoth();
  90         else
  91             this._rootSplitWidget.hideMain();
  92     }
  93 };
  94
  95
  96 /** @type {!WebInspector.ScreencastApp} */
  97 WebInspector.ScreencastApp._appInstance;
  98
  99 /**
 100  * @return {!WebInspector.ScreencastApp}
 101  */
 102 WebInspector.ScreencastApp._instance = function()
 103 {
 104     if (!WebInspector.ScreencastApp._appInstance)
 105         WebInspector.ScreencastApp._appInstance = new WebInspector.ScreencastApp();
 106     return WebInspector.ScreencastApp._appInstance;
 107 };
 108
 109 /**
 110  * @constructor
 111  * @implements {WebInspector.ToolbarItem.Provider}
 112  */
 113 WebInspector.ScreencastApp.ToolbarButtonProvider = function()
 114 {
 115 }
 116
 117 WebInspector.ScreencastApp.ToolbarButtonProvider.prototype = {
 118     /**
 119      * @override
 120      * @return {?WebInspector.ToolbarItem}
 121      */
 122     item: function()
 123     {
 124         return WebInspector.ScreencastApp._instance()._toggleButton;
 125     }
 126 }
 127
 128 /**
 129  * @constructor
 130  * @implements {WebInspector.AppProvider}
 131  */
 132 WebInspector.ScreencastAppProvider = function()
 133 {
 134 };
 135
 136 WebInspector.ScreencastAppProvider.prototype = {
 137     /**
 138      * @override
 139      * @return {!WebInspector.App}
 140      */
 141     createApp: function()
 142     {
 143         return WebInspector.ScreencastApp._instance();
 144     }
 145 };