Index: ash/common/session/session_controller.h |
diff --git a/ash/common/session/session_controller.h b/ash/common/session/session_controller.h |
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+// Copyright 2016 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef ASH_COMMON_SESSION_SESSION_CONTROLLER_H_ |
+#define ASH_COMMON_SESSION_SESSION_CONTROLLER_H_ |
+ |
+#include <stdint.h> |
+ |
+#include <vector> |
+ |
+#include "ash/ash_export.h" |
+#include "ash/public/cpp/session_types.h" |
+#include "ash/public/interfaces/session_controller.mojom.h" |
+#include "base/macros.h" |
+#include "base/observer_list.h" |
+#include "mojo/public/cpp/bindings/binding_set.h" |
+ |
+class AccountId; |
+ |
+namespace ash { |
+ |
+class SessionStateObserver; |
+ |
+// Implements mojom::SessionController to cache session related info such as |
+// session state, meta data about user sessions to support synchronous |
+// queries for ash. It is targeted as a replacement for SessionStateDelegate. |
+class ASH_EXPORT SessionController |
+ : NON_EXPORTED_BASE(public mojom::SessionController) { |
+ public: |
+ SessionController(); |
+ ~SessionController() override; |
+ |
+ // Binds the mojom::SessionControllerRequest to this object. |
+ void BindRequest(mojom::SessionControllerRequest request); |
+ |
+ // Returns the maximum possible number of logged in users. |
+ int GetMaximumNumberOfLoggedInUsers() const; |
+ |
+ // Returns the number of signed in users. If 0 is returned, there is either |
+ // no session in progress or no active user. |
+ int NumberOfLoggedInUsers() const; |
+ |
+ // Gets the policy of adding a user session to ash. |
+ AddUserSessionPolicy GetAddUserPolicy() const; |
+ |
+ // Returns |true| if the session has been fully started for the active user. |
+ // When a user becomes active, the profile and browser UI are not immediately |
+ // available. Only once this method starts returning |true| is the browser |
+ // startup complete and both profile and UI are fully available. |
+ bool IsActiveUserSessionStarted() const; |
+ |
+ // Returns true if the screen can be locked. |
+ bool CanLockScreen() const; |
+ |
+ // Returns true if the screen is currently locked. |
+ bool IsScreenLocked() const; |
+ |
+ // Returns true if the screen should be locked automatically when the screen |
+ // is turned off or the system is suspended. |
+ bool ShouldLockScreenAutomatically() const; |
+ |
+ // Returns |true| if user session blocked by some overlying UI. It can be |
+ // login screen, lock screen or screen for adding users into multi-profile |
+ // session. |
+ bool IsUserSessionBlocked() const; |
+ |
+ // Gets the ash session state. |
+ session_manager::SessionState GetSessionState() const; |
+ |
+ // Gets the user sessions in LRU order with the active session being first. |
+ const std::vector<mojom::UserSessionPtr>& GetUserSessions() const; |
+ |
+ // Locks the screen. The locking happens asynchronously. |
+ void LockScreen(); |
+ |
+ // Switches to another active user with |account_id| (if that user has |
+ // already signed in). |
+ void SwitchActiveUser(const AccountId& account_id); |
+ |
+ // Switches the active user to the next or previous user, with the same |
+ // ordering as user sessions are created. |
+ void CycleActiveUser(bool next_user); |
+ |
+ void AddSessionStateObserver(SessionStateObserver* observer); |
+ void RemoveSessionStateObserver(SessionStateObserver* observer); |
+ |
+ // mojom::SessionController |
+ void SetClient(mojom::SessionControllerClientPtr client) override; |
+ void SetSessionInfo(mojom::SessionInfoPtr info) override; |
+ void UpdateUserSession(mojom::UserSessionPtr user_session) override; |
+ void SetUserSessionOrder( |
+ const std::vector<uint32_t>& user_session_order) override; |
+ |
+ private: |
+ void SetSessionState(session_manager::SessionState state); |
+ void AddUserSession(mojom::UserSessionPtr user_session); |
+ |
+ // Bindings for mojom::SessionController interface. |
+ mojo::BindingSet<mojom::SessionController> bindings_; |
+ |
+ // Client interface to session manager code (chrome). |
+ mojom::SessionControllerClientPtr client_; |
+ |
+ // Cached session info. |
+ uint32_t max_users_ = 0u; |
+ bool can_lock_ = false; |
+ bool should_lock_screen_automatically_ = false; |
+ AddUserSessionPolicy add_user_session_policy_ = AddUserSessionPolicy::ALLOWED; |
+ session_manager::SessionState state_ = session_manager::SessionState::UNKNOWN; |
+ |
+ // Cached user session info sorted by the order from SetUserSessionOrder. |
+ // Currently the session manager code (chrome) sets a LRU order with the |
+ // active session being the first. |
+ std::vector<mojom::UserSessionPtr> user_sessions_; |
+ |
+ // The user session id of the current active user session. User session id |
+ // is managed by session manager code, starting at 1. 0u is an invalid id |
+ // to detect first active user session. |
+ uint32_t active_session_id_ = 0u; |
+ |
+ base::ObserverList<ash::SessionStateObserver> observers_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(SessionController); |
+}; |
+ |
+} // namespace ash |
+ |
+#endif // ASH_COMMON_SESSION_SESSION_CONTROLLER_H_ |