ash/system/date/clock_observer.h

   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_SYSTEM_DATE_CLOCK_OBSERVER_H_
   6 #define ASH_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_SYSTEM_DATE_CLOCK_OBSERVER_H_