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1 // Copyright (c) 2012 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 ASH_COMMON_SYSTEM_DATE_CLOCK_OBSERVER_H_ | |
6 #define ASH_COMMON_SYSTEM_DATE_CLOCK_OBSERVER_H_ | |
7 | |
8 #include "ash/ash_export.h" | |
9 | |
10 namespace ash { | |
11 | |
12 class ASH_EXPORT ClockObserver { | |
13 public: | |
14 virtual ~ClockObserver() {} | |
15 | |
16 virtual void OnDateFormatChanged() = 0; | |
17 virtual void OnSystemClockTimeUpdated() = 0; | |
18 virtual void OnSystemClockCanSetTimeChanged(bool can_set_time) = 0; | |
19 | |
20 // Force a refresh (e.g. after the system is resumed). | |
21 virtual void Refresh() = 0; | |
22 }; | |
23 | |
24 } // namespace ash | |
25 | |
26 #endif // ASH_COMMON_SYSTEM_DATE_CLOCK_OBSERVER_H_ | |
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