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// Copyright (c) 2013 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 "chromeos/power/power_manager_handler.h"
#include <algorithm>
#include <cmath>
#include "base/logging.h"
#include "chromeos/dbus/dbus_thread_manager.h"
#include "chromeos/dbus/power_manager_client.h"
namespace chromeos {
namespace {
static PowerManagerHandler* g_power_manager_handler = NULL;
} // namespace
PowerManagerHandler::Observer::Observer() {
}
PowerManagerHandler::Observer::~Observer() {
}
void PowerManagerHandler::Observer::OnPowerStatusChanged(
const PowerSupplyStatus& power_status) {
}
// static
void PowerManagerHandler::Initialize() {
CHECK(!g_power_manager_handler);
g_power_manager_handler = new PowerManagerHandler();
}
// static
void PowerManagerHandler::Shutdown() {
CHECK(g_power_manager_handler);
delete g_power_manager_handler;
g_power_manager_handler = NULL;
}
// static
bool PowerManagerHandler::IsInitialized() {
return g_power_manager_handler != NULL;
}
// static
PowerManagerHandler* PowerManagerHandler::Get() {
CHECK(g_power_manager_handler)
<< "PowerManagerHandler::Get() called before Initialize().";
return g_power_manager_handler;
}
void PowerManagerHandler::AddObserver(Observer* observer) {
observers_.AddObserver(observer);
}
void PowerManagerHandler::RemoveObserver(Observer* observer) {
observers_.RemoveObserver(observer);
}
PowerManagerHandler::PowerManagerHandler() {
// If the DBusThreadManager or the PowerManagerClient aren't available, there
// isn't much we can do. This should only happen when running tests.
if (!DBusThreadManager::IsInitialized() ||
!DBusThreadManager::Get() ||
!DBusThreadManager::Get()->GetPowerManagerClient())
return;
DBusThreadManager::Get()->GetPowerManagerClient()->AddObserver(this);
DBusThreadManager::Get()->GetPowerManagerClient()->RequestStatusUpdate(
PowerManagerClient::UPDATE_INITIAL);
}
PowerManagerHandler::~PowerManagerHandler() {
if (!DBusThreadManager::IsInitialized() ||
!DBusThreadManager::Get() ||
!DBusThreadManager::Get()->GetPowerManagerClient())
return;
DBusThreadManager::Get()->GetPowerManagerClient()->RemoveObserver(this);
}
void PowerManagerHandler::RequestStatusUpdate() {
DBusThreadManager::Get()->GetPowerManagerClient()->RequestStatusUpdate(
PowerManagerClient::UPDATE_USER);
}
PowerSupplyStatus PowerManagerHandler::GetPowerSupplyStatus() const {
return power_supply_status_;
}
void PowerManagerHandler::PowerChanged(
const PowerSupplyStatus& power_status) {
power_supply_status_ = power_status;
FOR_EACH_OBSERVER(Observer, observers_, OnPowerStatusChanged(power_status));
}
} // namespace chromeos
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