ash/shell_delegate.h

   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 ASH_SHELL_DELEGATE_H_
   6 #define ASH_SHELL_DELEGATE_H_
   7
   8 #include <string>
   9
  10 #include "ash/ash_export.h"
  11 #include "ash/shell.h"
  12 #include "base/callback.h"
  13 #include "base/strings/string16.h"
  14
  15 namespace app_list {
  16 class AppListViewDelegate;
  17 }
  18
  19 namespace aura {
  20 class RootWindow;
  21 class Window;
  22 }
  23
  24 namespace content {
  25 class BrowserContext;
  26 }
  27
  28 namespace ui {
  29 class MenuModel;
  30 }
  31
  32 namespace views {
  33 class Widget;
  34 }
  35
  36 namespace keyboard {
  37 class KeyboardControllerProxy;
  38 }
  39
  40 namespace ash {
  41
  42 class AccessibilityDelegate;
  43 class MediaDelegate;
  44 class NewWindowDelegate;
  45 class SessionStateDelegate;
  46 class ShelfDelegate;
  47 class ShelfItemDelegate;
  48 class ShelfModel;
  49 class SystemTrayDelegate;
  50 class UserWallpaperDelegate;
  51 struct ShelfItem;
  52
  53 class ASH_EXPORT VirtualKeyboardStateObserver {
  54  public:
  55   // Called when keyboard is activated/deactivated.
  56   virtual void OnVirtualKeyboardStateChanged(bool activated) {}
  57
  58  protected:
  59   virtual ~VirtualKeyboardStateObserver() {}
  60 };
  61
  62 // Delegate of the Shell.
  63 class ASH_EXPORT ShellDelegate {
  64  public:
  65   // The Shell owns the delegate.
  66   virtual ~ShellDelegate() {}
  67
  68   // Returns true if this is the first time that the shell has been run after
  69   // the system has booted.  false is returned after the shell has been
  70   // restarted, typically due to logging in as a guest or logging out.
  71   virtual bool IsFirstRunAfterBoot() const = 0;
  72
  73   // Returns true if multi-profiles feature is enabled.
  74   virtual bool IsMultiProfilesEnabled() const = 0;
  75
  76   // Returns true if incognito mode is allowed for the user.
  77   // Incognito windows are restricted for supervised users.
  78   virtual bool IsIncognitoAllowed() const = 0;
  79
  80   // Returns true if we're running in forced app mode.
  81   virtual bool IsRunningInForcedAppMode() const = 0;
  82
  83   // Returns true if multi account is enabled.
  84   virtual bool IsMultiAccountEnabled() const = 0;
  85
  86   // Called before processing |Shell::Init()| so that the delegate
  87   // can perform tasks necessary before the shell is initialized.
  88   virtual void PreInit() = 0;
  89
  90   // Called at the beginninig of Shell destructor so that
  91   // delegate can use Shell instance to perform cleanup tasks.
  92   virtual void PreShutdown() = 0;
  93
  94   // Invoked when the user uses Ctrl-Shift-Q to close chrome.
  95   virtual void Exit() = 0;
  96
  97   // Create a shell-specific keyboard::KeyboardControllerProxy
  98   virtual keyboard::KeyboardControllerProxy*
  99       CreateKeyboardControllerProxy() = 0;
 100
 101   // Called when virtual keyboard has been activated/deactivated.
 102   virtual void VirtualKeyboardActivated(bool activated) = 0;
 103
 104   // Adds or removes virtual keyboard state observer.
 105   virtual void AddVirtualKeyboardStateObserver(
 106       VirtualKeyboardStateObserver* observer) = 0;
 107   virtual void RemoveVirtualKeyboardStateObserver(
 108       VirtualKeyboardStateObserver* observer) = 0;
 109
 110   // Get the active browser context. This will get us the active profile
 111   // in chrome.
 112   virtual content::BrowserContext* GetActiveBrowserContext() = 0;
 113
 114   // Invoked to create an AppListViewDelegate. Shell takes the ownership of
 115   // the created delegate.
 116   virtual app_list::AppListViewDelegate* CreateAppListViewDelegate() = 0;
 117
 118   // Creates a new ShelfDelegate. Shell takes ownership of the returned
 119   // value.
 120   virtual ShelfDelegate* CreateShelfDelegate(ShelfModel* model) = 0;
 121
 122   // Creates a system-tray delegate. Shell takes ownership of the delegate.
 123   virtual SystemTrayDelegate* CreateSystemTrayDelegate() = 0;
 124
 125   // Creates a user wallpaper delegate. Shell takes ownership of the delegate.
 126   virtual UserWallpaperDelegate* CreateUserWallpaperDelegate() = 0;
 127
 128   // Creates a session state delegate. Shell takes ownership of the delegate.
 129   virtual SessionStateDelegate* CreateSessionStateDelegate() = 0;
 130
 131   // Creates a accessibility delegate. Shell takes ownership of the delegate.
 132   virtual AccessibilityDelegate* CreateAccessibilityDelegate() = 0;
 133
 134   // Creates an application delegate. Shell takes ownership of the delegate.
 135   virtual NewWindowDelegate* CreateNewWindowDelegate() = 0;
 136
 137   // Creates a media delegate. Shell takes ownership of the delegate.
 138   virtual MediaDelegate* CreateMediaDelegate() = 0;
 139
 140   // Creates a menu model of the context for the |root_window|.
 141   // When a ContextMenu is used for an item created by ShelfWindowWatcher,
 142   // passes its ShelfItemDelegate and ShelfItem.
 143   virtual ui::MenuModel* CreateContextMenu(
 144       aura::Window* root_window,
 145       ash::ShelfItemDelegate* item_delegate,
 146       ash::ShelfItem* item) = 0;
 147
 148   // Creates a GPU support object. Shell takes ownership of the object.
 149   virtual GPUSupport* CreateGPUSupport() = 0;
 150
 151   // Get the product name.
 152   virtual base::string16 GetProductName() const = 0;
 153 };
 154
 155 }  // namespace ash
 156
 157 #endif  // ASH_SHELL_DELEGATE_H_