chrome/browser/ui/ash/session_state_delegate_chromeos.h

   1 // Copyright (c) 2013 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_ASH_SESSION_STATE_DELEGATE_CHROMEOS_H_
   6 #define CHROME_BROWSER_UI_ASH_SESSION_STATE_DELEGATE_CHROMEOS_H_
   7
   8 #include "ash/session/session_state_delegate.h"
   9 #include "base/basictypes.h"
  10 #include "base/compiler_specific.h"
  11 #include "base/observer_list.h"
  12 #include "chrome/browser/chromeos/login/ui/user_adding_screen.h"
  13 #include "chromeos/login/login_state.h"
  14 #include "components/user_manager/user_manager.h"
  15
  16 namespace ash {
  17 class SessionStateObserver;
  18 }  // namespace ash
  19
  20 class SessionStateDelegateChromeos
  21     : public ash::SessionStateDelegate,
  22       public chromeos::LoginState::Observer,
  23       public user_manager::UserManager::UserSessionStateObserver,
  24       public chromeos::UserAddingScreen::Observer {
  25  public:
  26   SessionStateDelegateChromeos();
  27   virtual ~SessionStateDelegateChromeos();
  28
  29   // ash::SessionStateDelegate:
  30   virtual content::BrowserContext* GetBrowserContextByIndex(
  31       ash::MultiProfileIndex index) override;
  32   virtual content::BrowserContext* GetBrowserContextForWindow(
  33       aura::Window* window) override;
  34   virtual int GetMaximumNumberOfLoggedInUsers() const override;
  35   virtual int NumberOfLoggedInUsers() const override;
  36   virtual bool CanAddUserToMultiProfile(AddUserError* error) const override;
  37   virtual bool IsActiveUserSessionStarted() const override;
  38   virtual bool CanLockScreen() const override;
  39   virtual bool IsScreenLocked() const override;
  40   virtual bool ShouldLockScreenBeforeSuspending() const override;
  41   virtual void LockScreen() override;
  42   virtual void UnlockScreen() override;
  43   virtual bool IsUserSessionBlocked() const override;
  44   virtual SessionState GetSessionState() const override;
  45   virtual const user_manager::UserInfo* GetUserInfo(
  46       ash::MultiProfileIndex index) const override;
  47   virtual const user_manager::UserInfo* GetUserInfo(
  48       content::BrowserContext* context) const override;
  49   virtual bool ShouldShowAvatar(aura::Window* window) const override;
  50   virtual void SwitchActiveUser(const std::string& user_id) override;
  51   virtual void CycleActiveUser(CycleUser cycle_user) override;
  52   virtual bool IsMultiProfileAllowedByPrimaryUserPolicy() const override;
  53   virtual void AddSessionStateObserver(
  54       ash::SessionStateObserver* observer) override;
  55   virtual void RemoveSessionStateObserver(
  56       ash::SessionStateObserver* observer) override;
  57
  58   // chromeos::LoginState::Observer overrides.
  59   virtual void LoggedInStateChanged() override;
  60
  61   // user_manager::UserManager::UserSessionStateObserver:
  62   virtual void ActiveUserChanged(
  63       const user_manager::User* active_user) override;
  64   virtual void UserAddedToSession(
  65       const user_manager::User* added_user) override;
  66
  67   // chromeos::UserAddingScreen::Observer:
  68   virtual void OnUserAddingStarted() override;
  69   virtual void OnUserAddingFinished() override;
  70
  71  private:
  72   // Sets session state to |new_state|.
  73   // If |force| is true then |new_state| is set even if existing session
  74   // state is the same (used for explicit initialization).
  75   void SetSessionState(SessionState new_state, bool force);
  76
  77   // Notify observers about session state change.
  78   void NotifySessionStateChanged();
  79
  80   // Switches to a new user. This call might show a dialog asking the user if he
  81   // wants to stop desktop casting before switching.
  82   void TryToSwitchUser(const std::string& user_id);
  83
  84   // List of observers is only used on Chrome OS for now.
  85   ObserverList<ash::SessionStateObserver> session_state_observer_list_;
  86
  87   // Session state (e.g. login screen vs. user session).
  88   SessionState session_state_;
  89
  90   DISALLOW_COPY_AND_ASSIGN(SessionStateDelegateChromeos);
  91 };
  92
  93 #endif  // CHROME_BROWSER_UI_ASH_SESSION_STATE_DELEGATE_CHROMEOS_H_