| // Copyright 2019 The Chromium OS 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 BIOD_POWER_EVENT_OBSERVER_H_ |
| #define BIOD_POWER_EVENT_OBSERVER_H_ |
| |
| #include "base/observer_list_types.h" |
| |
| namespace biod { |
| |
| // Interface for observing signals from the power manager client. |
| class PowerEventObserver : public base::CheckedObserver { |
| public: |
| PowerEventObserver() = default; |
| virtual ~PowerEventObserver() = default; |
| |
| // Called when power button is pressed or released. |
| virtual void PowerButtonEventReceived(bool down, |
| const base::TimeTicks& timestamp) = 0; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(PowerEventObserver); |
| }; |
| |
| } // namespace biod |
| |
| #endif // BIOD_POWER_EVENT_OBSERVER_H_ |