| // Copyright (c) 2012 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_SYSTEM_DATE_CLOCK_OBSERVER_H_ |
| #define ASH_SYSTEM_DATE_CLOCK_OBSERVER_H_ |
| |
| #include "ash/ash_export.h" |
| |
| namespace ash { |
| |
| class ASH_EXPORT ClockObserver { |
| public: |
| virtual ~ClockObserver() {} |
| |
| virtual void OnDateFormatChanged() = 0; |
| virtual void OnSystemClockTimeUpdated() = 0; |
| virtual void OnSystemClockCanSetTimeChanged(bool can_set_time) = 0; |
| |
| // Force a refresh (e.g. after the system is resumed). |
| virtual void Refresh() = 0; |
| }; |
| |
| } // namespace ash |
| |
| #endif // ASH_SYSTEM_DATE_CLOCK_OBSERVER_H_ |