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