1 // Copyright (c) 2011 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_CROS_POWER_LIBRARY_H_ 6 #define CHROME_BROWSER_CHROMEOS_CROS_POWER_LIBRARY_H_ 7 #pragma once 8 9 #include "base/memory/singleton.h" 10 #include "base/observer_list.h" 11 #include "base/time.h" 12 #include "third_party/cros/chromeos_power.h" 13 14 namespace chromeos { 15 16 // This interface defines interaction with the ChromeOS power library APIs. 17 // Classes can add themselves as observers. Users can get an instance of this 18 // library class like this: chromeos::CrosLibrary::Get()->GetPowerLibrary() 19 class PowerLibrary { 20 public: 21 class Observer { 22 public: 23 virtual void PowerChanged(PowerLibrary* obj) = 0; 24 virtual void SystemResumed() = 0; 25 }; ~PowerLibrary()26 virtual ~PowerLibrary() {} 27 virtual void AddObserver(Observer* observer) = 0; 28 virtual void RemoveObserver(Observer* observer) = 0; 29 // Whether or not the line power is connected. 30 virtual bool line_power_on() const = 0; 31 32 // Whether or not the battery is fully charged.. 33 virtual bool battery_fully_charged() const = 0; 34 35 // The percentage (0-100) of remaining battery. 36 virtual double battery_percentage() const = 0; 37 38 // Whether there is a battery present. 39 virtual bool battery_is_present() const = 0; 40 41 // The amount of time until battery is empty. 42 virtual base::TimeDelta battery_time_to_empty() const = 0; 43 44 // The amount of time until battery is full. 45 virtual base::TimeDelta battery_time_to_full() const = 0; 46 47 // Enable/disable screen lock for current session. 48 virtual void EnableScreenLock(bool enable) = 0; 49 50 // Requests restart of the system. 51 virtual void RequestRestart() = 0; 52 53 // Requests shutdown of the system. 54 virtual void RequestShutdown() = 0; 55 56 // Factory function, creates a new instance and returns ownership. 57 // For normal usage, access the singleton via CrosLibrary::Get(). 58 static PowerLibrary* GetImpl(bool stub); 59 }; 60 61 } // namespace chromeos 62 63 #endif // CHROME_BROWSER_CHROMEOS_CROS_POWER_LIBRARY_H_ 64