1// Copyright (c) 2010 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 CHROME_BROWSER_CHROMEOS_BRIGHTNESS_OBSERVER_H_ 6#define CHROME_BROWSER_CHROMEOS_BRIGHTNESS_OBSERVER_H_ 7#pragma once 8 9#include "base/basictypes.h" 10#include "chrome/browser/chromeos/cros/brightness_library.h" 11 12namespace chromeos { 13 14// This observer displays a bubble at the bottom of the screen showing the 15// current brightness level whenever the user changes it. 16class BrightnessObserver : public BrightnessLibrary::Observer { 17 public: 18 BrightnessObserver() {} 19 virtual ~BrightnessObserver() {} 20 21 private: 22 // BrightnessLibrary::Observer implementation. 23 virtual void BrightnessChanged(int level, bool user_initiated); 24 25 DISALLOW_COPY_AND_ASSIGN(BrightnessObserver); 26}; 27 28} // namespace chromeos 29 30#endif // CHROME_BROWSER_CHROMEOS_BRIGHTNESS_OBSERVER_H_ 31