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// Copyright (c) 2009 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
#include "base/observer_list.h"
#include "base/singleton.h"
#include "base/time.h"
#include "cros/chromeos_power.h"
namespace chromeos {
// 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(PowerLibrary* obj) = 0;
};
virtual ~PowerLibrary() {}
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
// Whether or not the line power is connected.
virtual bool line_power_on() const = 0;
// Whether or not the battery is fully charged..
virtual bool battery_fully_charged() const = 0;
// The percentage (0-100) of remaining battery.
virtual double battery_percentage() const = 0;
// Whether there is a battery present.
virtual bool battery_is_present() const = 0;
// The amount of time until battery is empty.
virtual base::TimeDelta battery_time_to_empty() const = 0;
// The amount of time until battery is full.
virtual base::TimeDelta battery_time_to_full() const = 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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