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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 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 namespace client {
     23 class UserActionClient;
     24 }
     25 }
     26 
     27 namespace content {
     28 class BrowserContext;
     29 }
     30 
     31 namespace ui {
     32 class MenuModel;
     33 }
     34 
     35 namespace views {
     36 class Widget;
     37 }
     38 
     39 namespace keyboard {
     40 class KeyboardControllerProxy;
     41 }
     42 
     43 namespace ash {
     44 
     45 class AccessibilityDelegate;
     46 class CapsLockDelegate;
     47 class MediaDelegate;
     48 class NewWindowDelegate;
     49 class RootWindowHostFactory;
     50 class SessionStateDelegate;
     51 class ShelfDelegate;
     52 class ShelfModel;
     53 class SystemTrayDelegate;
     54 class UserWallpaperDelegate;
     55 struct LauncherItem;
     56 
     57 // Delegate of the Shell.
     58 class ASH_EXPORT ShellDelegate {
     59  public:
     60   // The Shell owns the delegate.
     61   virtual ~ShellDelegate() {}
     62 
     63   // Returns true if this is the first time that the shell has been run after
     64   // the system has booted.  false is returned after the shell has been
     65   // restarted, typically due to logging in as a guest or logging out.
     66   virtual bool IsFirstRunAfterBoot() const = 0;
     67 
     68   // Returns true if multi-profiles feature is enabled.
     69   virtual bool IsMultiProfilesEnabled() const = 0;
     70 
     71   // Returns true if incognito mode is allowed for the user.
     72   // Incognito windows are restricted for supervised users.
     73   virtual bool IsIncognitoAllowed() const = 0;
     74 
     75   // Returns true if we're running in forced app mode.
     76   virtual bool IsRunningInForcedAppMode() const = 0;
     77 
     78   // Called before processing |Shell::Init()| so that the delegate
     79   // can perform tasks necessary before the shell is initialized.
     80   virtual void PreInit() = 0;
     81 
     82   // Shuts down the environment.
     83   virtual void Shutdown() = 0;
     84 
     85   // Invoked when the user uses Ctrl-Shift-Q to close chrome.
     86   virtual void Exit() = 0;
     87 
     88   // Create a shell-specific keyboard::KeyboardControllerProxy
     89   virtual keyboard::KeyboardControllerProxy*
     90       CreateKeyboardControllerProxy() = 0;
     91 
     92   // Get the active browser context. This will get us the active profile
     93   // in chrome.
     94   virtual content::BrowserContext* GetActiveBrowserContext() = 0;
     95 
     96   // Invoked to create an AppListViewDelegate. Shell takes the ownership of
     97   // the created delegate.
     98   virtual app_list::AppListViewDelegate* CreateAppListViewDelegate() = 0;
     99 
    100   // Creates a new ShelfDelegate. Shell takes ownership of the returned
    101   // value.
    102   virtual ShelfDelegate* CreateShelfDelegate(ShelfModel* model) = 0;
    103 
    104   // Creates a system-tray delegate. Shell takes ownership of the delegate.
    105   virtual SystemTrayDelegate* CreateSystemTrayDelegate() = 0;
    106 
    107   // Creates a user wallpaper delegate. Shell takes ownership of the delegate.
    108   virtual UserWallpaperDelegate* CreateUserWallpaperDelegate() = 0;
    109 
    110   // Creates a caps lock delegate. Shell takes ownership of the delegate.
    111   virtual CapsLockDelegate* CreateCapsLockDelegate() = 0;
    112 
    113   // Creates a session state delegate. Shell takes ownership of the delegate.
    114   virtual SessionStateDelegate* CreateSessionStateDelegate() = 0;
    115 
    116   // Creates a accessibility delegate. Shell takes ownership of the delegate.
    117   virtual AccessibilityDelegate* CreateAccessibilityDelegate() = 0;
    118 
    119   // Creates an application delegate. Shell takes ownership of the delegate.
    120   virtual NewWindowDelegate* CreateNewWindowDelegate() = 0;
    121 
    122   // Creates a media delegate. Shell takes ownership of the delegate.
    123   virtual MediaDelegate* CreateMediaDelegate() = 0;
    124 
    125   // Creates a user action client. Shell takes ownership of the object.
    126   virtual aura::client::UserActionClient* CreateUserActionClient() = 0;
    127 
    128   // Creates a menu model of the context for the |root_window|.
    129   virtual ui::MenuModel* CreateContextMenu(aura::Window* root_window) = 0;
    130 
    131   // Creates a root window host factory. Shell takes ownership of the returned
    132   // value.
    133   virtual RootWindowHostFactory* CreateRootWindowHostFactory() = 0;
    134 
    135   // Get the product name.
    136   virtual base::string16 GetProductName() const = 0;
    137 };
    138 
    139 }  // namespace ash
    140 
    141 #endif  // ASH_SHELL_DELEGATE_H_
    142