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// Copyright (c) 2010 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.
#include "chrome/browser/chromeos/cros/power_library.h"
#include "base/message_loop.h"
#include "base/string_util.h"
#include "chrome/browser/browser_thread.h"
#include "chrome/browser/chromeos/cros/cros_library.h"
namespace chromeos {
class PowerLibraryImpl : public PowerLibrary {
public:
PowerLibraryImpl()
: power_status_connection_(NULL),
status_(chromeos::PowerStatus()) {
if (CrosLibrary::Get()->EnsureLoaded()) {
Init();
}
}
~PowerLibraryImpl() {
if (power_status_connection_) {
chromeos::DisconnectPowerStatus(power_status_connection_);
}
}
void AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
bool line_power_on() const {
return status_.line_power_on;
}
bool battery_is_present() const {
return status_.battery_is_present;
}
bool battery_fully_charged() const {
return status_.battery_state == chromeos::BATTERY_STATE_FULLY_CHARGED;
}
double battery_percentage() const {
return status_.battery_percentage;
}
base::TimeDelta battery_time_to_empty() const {
return base::TimeDelta::FromSeconds(status_.battery_time_to_empty);
}
base::TimeDelta battery_time_to_full() const {
return base::TimeDelta::FromSeconds(status_.battery_time_to_full);
}
virtual void EnableScreenLock(bool enable) {
if (!CrosLibrary::Get()->EnsureLoaded())
return;
// Make sure we run on FILE thread becuase chromeos::EnableScreenLock
// would write power manager config file to disk.
if (!BrowserThread::CurrentlyOn(BrowserThread::FILE)) {
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
NewRunnableMethod(this, &PowerLibraryImpl::EnableScreenLock, enable));
return;
}
chromeos::EnableScreenLock(enable);
}
virtual void RequestRestart() {
if (!CrosLibrary::Get()->EnsureLoaded())
return;
chromeos::RequestRestart();
}
virtual void RequestShutdown() {
if (!CrosLibrary::Get()->EnsureLoaded())
return;
chromeos::RequestShutdown();
}
private:
static void PowerStatusChangedHandler(void* object,
const chromeos::PowerStatus& status) {
PowerLibraryImpl* power = static_cast<PowerLibraryImpl*>(object);
power->UpdatePowerStatus(status);
}
void Init() {
power_status_connection_ = chromeos::MonitorPowerStatus(
&PowerStatusChangedHandler, this);
}
void UpdatePowerStatus(const chromeos::PowerStatus& status) {
// Make sure we run on UI thread.
if (!BrowserThread::CurrentlyOn(BrowserThread::UI)) {
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
NewRunnableMethod(
this, &PowerLibraryImpl::UpdatePowerStatus, status));
return;
}
DVLOG(1) << "Power lpo=" << status.line_power_on
<< " sta=" << status.battery_state
<< " per=" << status.battery_percentage
<< " tte=" << status.battery_time_to_empty
<< " ttf=" << status.battery_time_to_full;
status_ = status;
FOR_EACH_OBSERVER(Observer, observers_, PowerChanged(this));
}
ObserverList<Observer> observers_;
// A reference to the battery power api, to allow callbacks when the battery
// status changes.
chromeos::PowerStatusConnection power_status_connection_;
// The latest power status.
chromeos::PowerStatus status_;
DISALLOW_COPY_AND_ASSIGN(PowerLibraryImpl);
};
class PowerLibraryStubImpl : public PowerLibrary {
public:
PowerLibraryStubImpl() {}
~PowerLibraryStubImpl() {}
void AddObserver(Observer* observer) {}
void RemoveObserver(Observer* observer) {}
bool line_power_on() const { return false; }
bool battery_is_present() const { return false; }
bool battery_fully_charged() const { return false; }
double battery_percentage() const { return false; }
base::TimeDelta battery_time_to_empty() const {
return base::TimeDelta::FromSeconds(0);
}
base::TimeDelta battery_time_to_full() const {
return base::TimeDelta::FromSeconds(0);
}
virtual void EnableScreenLock(bool enable) {}
virtual void RequestRestart() {}
virtual void RequestShutdown() {}
};
// static
PowerLibrary* PowerLibrary::GetImpl(bool stub) {
if (stub)
return new PowerLibraryStubImpl();
else
return new PowerLibraryImpl();
}
} // namespace chromeos
// Allows InvokeLater without adding refcounting. This class is a Singleton and
// won't be deleted until it's last InvokeLater is run.
DISABLE_RUNNABLE_METHOD_REFCOUNT(chromeos::PowerLibraryImpl);
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