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