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| 1 // Copyright (c) 2012 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 #ifndef CHROME_BROWSER_UI_VIEWS_AURA_LAUNCHER_LAUNCHER_UPDATER_H_ | |
| 6 #define CHROME_BROWSER_UI_VIEWS_AURA_LAUNCHER_LAUNCHER_UPDATER_H_ | |
| 7 #pragma once | |
| 8 | |
| 9 #include <map> | |
| 10 #include <string> | |
| 11 | |
| 12 #include "base/basictypes.h" | |
| 13 #include "base/compiler_specific.h" | |
| 14 #include "base/memory/scoped_ptr.h" | |
| 15 #include "base/string16.h" | |
| 16 #include "chrome/browser/tabs/tab_strip_model_observer.h" | |
| 17 #include "ash/launcher/launcher_types.h" | |
| 18 | |
| 19 class Browser; | |
| 20 class ChromeLauncherDelegate; | |
| 21 class TabContentsWrapper; | |
| 22 | |
| 23 namespace ash { | |
| 24 class LauncherModel; | |
| 25 } | |
| 26 | |
| 27 namespace aura { | |
| 28 class Window; | |
| 29 } | |
| 30 | |
| 31 // LauncherUpdater is responsible for keeping the launcher representation of a | |
| 32 // window up to date as the tab strip changes. | |
| 33 class LauncherUpdater : public TabStripModelObserver { | |
| 34 public: | |
| 35 enum Type { | |
| 36 TYPE_APP, | |
| 37 TYPE_TABBED | |
| 38 }; | |
| 39 | |
| 40 LauncherUpdater(aura::Window* window, | |
| 41 TabStripModel* tab_model, | |
| 42 ChromeLauncherDelegate* launcher_delegate, | |
| 43 Type type, | |
| 44 const std::string& app_id); | |
| 45 virtual ~LauncherUpdater(); | |
| 46 | |
| 47 // Sets up this LauncherUpdater. | |
| 48 void Init(); | |
| 49 | |
| 50 // Creates and returns a new LauncherUpdater for |browser|. This returns | |
| 51 // NULL if a LauncherUpdater is not needed for the specified browser. | |
| 52 static LauncherUpdater* Create(Browser* browser); | |
| 53 | |
| 54 aura::Window* window() { return window_; } | |
| 55 | |
| 56 TabStripModel* tab_model() { return tab_model_; } | |
| 57 | |
| 58 TabContentsWrapper* GetTab(ash::LauncherID id); | |
| 59 | |
| 60 // TabStripModel overrides: | |
| 61 virtual void ActiveTabChanged(TabContentsWrapper* old_contents, | |
| 62 TabContentsWrapper* new_contents, | |
| 63 int index, | |
| 64 bool user_gesture) OVERRIDE; | |
| 65 virtual void TabChangedAt( | |
| 66 TabContentsWrapper* tab, | |
| 67 int index, | |
| 68 TabStripModelObserver::TabChangeType change_type) OVERRIDE; | |
| 69 virtual void TabInsertedAt(TabContentsWrapper* contents, | |
| 70 int index, | |
| 71 bool foreground) OVERRIDE; | |
| 72 virtual void TabReplacedAt(TabStripModel* tab_strip_model, | |
| 73 TabContentsWrapper* old_contents, | |
| 74 TabContentsWrapper* new_contents, | |
| 75 int index) OVERRIDE; | |
| 76 virtual void TabDetachedAt(TabContentsWrapper* contents, int index) OVERRIDE; | |
| 77 | |
| 78 private: | |
| 79 // AppTabDetails is used to identify a launcher item that corresponds to an | |
| 80 // app tab. | |
| 81 struct AppTabDetails { | |
| 82 AppTabDetails(); | |
| 83 ~AppTabDetails(); | |
| 84 | |
| 85 // ID of the launcher item. | |
| 86 ash::LauncherID id; | |
| 87 | |
| 88 // ID of the app (corresponds to Extension::id()). | |
| 89 std::string app_id; | |
| 90 }; | |
| 91 | |
| 92 // Used to identify what an update corresponds to. | |
| 93 enum UpdateType { | |
| 94 UPDATE_TAB_REMOVED, | |
| 95 UPDATE_TAB_CHANGED, | |
| 96 UPDATE_TAB_INSERTED, | |
| 97 }; | |
| 98 | |
| 99 typedef std::map<TabContentsWrapper*, AppTabDetails> AppTabMap; | |
| 100 | |
| 101 // Updates the launcher from |tab|. | |
| 102 void UpdateLauncher(TabContentsWrapper* tab); | |
| 103 | |
| 104 // Invoked when a tab changes in some way. Updates the Launcher appropriately. | |
| 105 void UpdateAppTabState(TabContentsWrapper* tab, UpdateType update_type); | |
| 106 | |
| 107 // Creates a launcher item for |tab|. | |
| 108 void AddAppItem(TabContentsWrapper* tab); | |
| 109 | |
| 110 void RegisterAppItem(ash::LauncherID id, TabContentsWrapper* tab); | |
| 111 | |
| 112 // Creates a tabbed launcher item. | |
| 113 void CreateTabbedItem(); | |
| 114 | |
| 115 // Returns true if this LauncherUpdater created the launcher item with the | |
| 116 // specified id. Returns true if it did. If the id corresponds to an app tab, | |
| 117 // |tab| is set to the TabContentsWrapper for the app tab. | |
| 118 bool ContainsID(ash::LauncherID id, TabContentsWrapper** tab); | |
| 119 | |
| 120 ash::LauncherModel* launcher_model(); | |
| 121 | |
| 122 // Browser window we're in. | |
| 123 aura::Window* window_; | |
| 124 | |
| 125 TabStripModel* tab_model_; | |
| 126 | |
| 127 ChromeLauncherDelegate* launcher_delegate_; | |
| 128 | |
| 129 // Whether this corresponds to an app or tabbed browser. | |
| 130 const Type type_; | |
| 131 | |
| 132 const std::string app_id_; | |
| 133 | |
| 134 // This is one of three possible values: | |
| 135 // . If type_ == TYPE_APP, this is the ID of the app item. | |
| 136 // . If type_ == TYPE_TABBED and all the tabs are app tabs this is -1. | |
| 137 // . Otherwise this is the id of the TYPE_TABBED item. | |
| 138 ash::LauncherID item_id_; | |
| 139 | |
| 140 // Used for any app tabs. | |
| 141 AppTabMap app_map_; | |
| 142 | |
| 143 DISALLOW_COPY_AND_ASSIGN(LauncherUpdater); | |
| 144 }; | |
| 145 | |
| 146 #endif // CHROME_BROWSER_UI_VIEWS_AURA_LAUNCHER_LAUNCHER_UPDATER_H_ | |
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