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// Copyright (c) 2011 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_CROS_POWER_LIBRARY_H_
#define CHROME_BROWSER_CHROMEOS_CROS_POWER_LIBRARY_H_
#pragma once
// TODO(sque): Move to chrome/browser/chromeos/system, crosbug.com/16558
#include "base/callback.h"
namespace base {
class TimeDelta;
}
namespace chromeos {
typedef base::Callback<void(int64_t)> CalculateIdleTimeCallback;
struct PowerSupplyStatus {
bool line_power_on;
bool battery_is_present;
bool battery_is_full;
// Time in seconds until the battery is empty or full, 0 for unknown.
int64 battery_seconds_to_empty;
int64 battery_seconds_to_full;
double battery_percentage;
PowerSupplyStatus() : line_power_on(false),
battery_is_present(false),
battery_is_full(false),
battery_seconds_to_empty(0),
battery_seconds_to_full(0),
battery_percentage(0) {}
};
// This interface defines interaction with the ChromeOS power library APIs.
// Classes can add themselves as observers. Users can get an instance of this
// library class like this: chromeos::CrosLibrary::Get()->GetPowerLibrary()
class PowerLibrary {
public:
class Observer {
public:
virtual void PowerChanged(const PowerSupplyStatus& status) = 0;
virtual void SystemResumed() = 0;
protected:
virtual ~Observer() {}
};
virtual ~PowerLibrary() {}
virtual void Init() = 0;
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
// Calculates idle time asynchronously. If it encounters some error,
// it returns -1.
virtual void CalculateIdleTime(CalculateIdleTimeCallback* callback) = 0;
// Enable/disable screen lock for current session.
virtual void EnableScreenLock(bool enable) = 0;
// Requests restart of the system.
virtual void RequestRestart() = 0;
// Requests shutdown of the system.
virtual void RequestShutdown() = 0;
// UI initiated request for status update.
virtual void RequestStatusUpdate() = 0;
// Factory function, creates a new instance and returns ownership.
// For normal usage, access the singleton via CrosLibrary::Get().
static PowerLibrary* GetImpl(bool stub);
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_CROS_POWER_LIBRARY_H_
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