| // 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 CHROME_BROWSER_CHROMEOS_POWER_BRIGHTNESS_OBSERVER_H_ |
| #define CHROME_BROWSER_CHROMEOS_POWER_BRIGHTNESS_OBSERVER_H_ |
| |
| #include "base/basictypes.h" |
| #include "base/compiler_specific.h" |
| #include "chromeos/dbus/power_manager_client.h" |
| |
| namespace chromeos { |
| |
| // This observer listens for changes to the screen brightness and notifies |
| // extensions and ash::PowerButtonController about them. |
| class BrightnessObserver : public PowerManagerClient::Observer { |
| public: |
| // This class registers/unregisters itself as an observer in ctor/dtor. |
| BrightnessObserver(); |
| virtual ~BrightnessObserver(); |
| |
| private: |
| // PowerManagerClient::Observer implementation. |
| virtual void BrightnessChanged(int level, bool user_initiated) OVERRIDE; |
| |
| DISALLOW_COPY_AND_ASSIGN(BrightnessObserver); |
| }; |
| |
| } // namespace chromeos |
| |
| #endif // CHROME_BROWSER_CHROMEOS_POWER_BRIGHTNESS_OBSERVER_H_ |