/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

*

* This program is free software: you can redistribute it and/or modify

* it under the terms of the GNU Lesser General Public License as published by

* the Free Software Foundation, version 2.1 of the License.

*

* This program is distributed in the hope that it will be useful,

* but WITHOUT ANY WARRANTY; without even the implied warranty of

* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

* GNU Lesser General Public License for more details.

*

* You should have received a copy of the GNU Lesser General Public License

* along with this program.  If not,

* see "http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html/".

*

* Description:

* This file implements the SystemDeviceImpl class.

*/

#include <QList>

#include <QString>

#include "SystemDeviceImpl.h"

#include "Utilities.h"

namespace GVA {

SystemDeviceImpl::SystemDeviceImpl()

{

    // create Qt Mobility API objects for device info

    m_deviceInfo = new QSystemDeviceInfo(this);

    // When the m_deviceInfo signals battery level changed,

    // DeviceDelegate emits batteryLevelChanged

    safe_connect(m_deviceInfo, SIGNAL(batteryLevelChanged(int)),

                 this, SIGNAL(batteryLevelChanged(int)));

    // set current charging state then keep it up to date with signal handler

    m_batteryCharging = (m_deviceInfo->currentPowerState() ==

        QSystemDeviceInfo::WallPowerChargingBattery) ? true : false;

    safe_connect(m_deviceInfo, SIGNAL(powerStateChanged(QSystemDeviceInfo::PowerState)),

                 this, SLOT(handlePowerStateChanged(QSystemDeviceInfo::PowerState)));

}

SystemDeviceImpl::~SystemDeviceImpl()

{

    // clean up

    delete m_deviceInfo;

}

//! Get the current battery level.

int SystemDeviceImpl::getBatteryLevel() const

{

    return (m_deviceInfo->batteryLevel());

}

//! Handles the powerStateChanged signal from system device info.

/*!

  \param state new power state

*/

void SystemDeviceImpl::handlePowerStateChanged(QSystemDeviceInfo::PowerState state)

{

    bool batteryCharging =

        (state == QSystemDeviceInfo::WallPowerChargingBattery) ? true : false;

    if (batteryCharging != m_batteryCharging) {

        m_batteryCharging = batteryCharging;

        //qDebug() << "DeviceDelegate: new charging = " << m_batteryCharging;

        // emit battery level - subscriber will get charging state if desired

        emit batteryLevelChanged(m_deviceInfo->batteryLevel());

    }

}

} // GVA