| // Copyright 2015 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 CHROME_BROWSER_CHROMEOS_SYSTEM_SYSTEM_CLOCK_H_ |
| #define CHROME_BROWSER_CHROMEOS_SYSTEM_SYSTEM_CLOCK_H_ |
| |
| #include <memory> |
| |
| #include "base/callback_list.h" |
| #include "base/i18n/time_formatting.h" |
| #include "base/macros.h" |
| #include "chromeos/login/login_state.h" |
| #include "components/user_manager/user_manager.h" |
| #include "content/public/browser/notification_observer.h" |
| #include "content/public/browser/notification_registrar.h" |
| |
| class Profile; |
| class PrefChangeRegistrar; |
| |
| namespace user_manager { |
| class User; |
| } |
| |
| namespace chromeos { |
| namespace system { |
| |
| class SystemClockObserver; |
| |
| // This is a global singleton (actually a member of BrowserProcessPlatformPart) |
| // that is responsible for correct time formatting. It listens to events that |
| // modify on-screen time representation (like ActiveUserChanged) and notifies |
| // observers. |
| class SystemClock : public chromeos::LoginState::Observer, |
| public content::NotificationObserver, |
| public user_manager::UserManager::UserSessionStateObserver { |
| public: |
| SystemClock(); |
| ~SystemClock() override; |
| |
| void SetLastFocusedPodHourClockType(base::HourClockType hour_clock_type); |
| |
| void AddObserver(SystemClockObserver* observer); |
| void RemoveObserver(SystemClockObserver* observer); |
| |
| bool ShouldUse24HourClock() const; |
| |
| // content::NotificationObserver implementation. |
| void Observe(int type, |
| const content::NotificationSource& source, |
| const content::NotificationDetails& details) override; |
| |
| // user_manager::UserManager::UserSessionStateObserver overrides |
| void ActiveUserChanged(const user_manager::User* active_user) override; |
| |
| private: |
| // Should be the same as CrosSettings::ObserverSubscription. |
| typedef base::CallbackList<void(void)>::Subscription |
| CrosSettingsObserverSubscription; |
| |
| void OnActiveProfileChanged(Profile* profile); |
| bool OnProfileDestroyed(Profile* profile); |
| |
| // LoginState::Observer overrides. |
| void LoggedInStateChanged() override; |
| |
| void OnSystemPrefChanged(); |
| |
| void UpdateClockType(); |
| |
| bool user_pod_was_focused_; |
| base::HourClockType last_focused_pod_hour_clock_type_; |
| |
| Profile* user_profile_; |
| std::unique_ptr<content::NotificationRegistrar> registrar_; |
| std::unique_ptr<PrefChangeRegistrar> user_pref_registrar_; |
| |
| base::ObserverList<SystemClockObserver> observer_list_; |
| |
| std::unique_ptr<CrosSettingsObserverSubscription> device_settings_observer_; |
| |
| DISALLOW_COPY_AND_ASSIGN(SystemClock); |
| }; |
| |
| } // namespace system |
| } // namespace chromeos |
| |
| #endif // CHROME_BROWSER_CHROMEOS_SYSTEM_SYSTEM_CLOCK_H_ |