/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: FM Radio widget process handler

*

*/

// System includes

#include <QDateTime>

#include "xqsettingsmanager.h"

#include "xqsettingskey.h"

#include "xqpublishandsubscribeutils.h"

// User includes

#include "radiohswidgetprofilereader.h"

#include "radiohswidget.h"

#include "radioservicedef.h"

#include "radiologger.h"

// Constants

/** Constant for radio running undefined status. */

const int RADIO_RUNNING_STATUS_UNDEFINED(-1);

/*!

    \class RadioHsWidgetProfileReader

    \brief Implementation of P&S key reader and monitor.

    RadioHsWidgetProfileReader implements reader and monitor for P&S keys.

*/

// ======== MEMBER FUNCTIONS ========

/*!

    Constructs a profile reader which is a child of \a parent.

    Creates XQSettingsManager for monitoring and accessing the P&S keys.

    Connects to the signals of XQSettingsManager.

*/

RadioHsWidgetProfileReader::RadioHsWidgetProfileReader(

    RadioHsWidget *parent) :

    QObject(parent),

    mParent(*parent),

    mSettingsManager(new XQSettingsManager(this)),

    mRadioStatus(RADIO_RUNNING_STATUS_UNDEFINED)

{

    LOG_METHOD;

    Radio::connect(mSettingsManager, SIGNAL(itemDeleted(XQSettingsKey)), this,

        SLOT(handleDeletedItem(XQSettingsKey)));

    Radio::connect(mSettingsManager, SIGNAL(valueChanged(XQSettingsKey, QVariant)),

        this, SLOT(handleChanges(XQSettingsKey, QVariant)));

}

/*!

    Destructor 

 */

RadioHsWidgetProfileReader::~RadioHsWidgetProfileReader()

{

    LOG_METHOD;

    XQSettingsKey radioRunningKey(XQSettingsKey::TargetPublishAndSubscribe,

        KRadioPSUid, KRadioStartupKey);

    mSettingsManager->stopMonitoring(radioRunningKey);

}

/*!

    Start monitoring of radio P&S key. Read also the initial value.

 */

void RadioHsWidgetProfileReader::startMonitoringRadioRunningStatus()

{

    LOG_METHOD;

    XQSettingsKey radioRunningKey(XQSettingsKey::TargetPublishAndSubscribe,

        KRadioPSUid, KRadioStartupKey);

    // Start monitoring.

    mSettingsManager->startMonitoring(radioRunningKey);

    // Read current value.

    radioRunningStatus(

        mSettingsManager->readItemValue(radioRunningKey));

}

/*!

 */

{

    LOG_METHOD_RET("%d");

    // Read current value.

        return true;

    }

    return false;

}

/*!

    Handling of deletion of listened keys.

    \param key Deleted key.

 */

void RadioHsWidgetProfileReader::handleDeletedItem(const XQSettingsKey &key)

{

    LOG_METHOD_ENTER;

    if (key.uid() == KRadioPSUid && key.key() == KRadioStartupKey) {

        LOG("KRadioStartupKey deleted");

        startMonitoringRadioRunningStatus();

    }

}

/*!

    Notifications from settings manager are handled and routed to appropriate

    private slots.

    \param key Changed key.

    \param value Value of changed key.

 */

void RadioHsWidgetProfileReader::handleChanges(const XQSettingsKey &key,

    const QVariant& value)

{

    LOG_SLOT_CALLER;

    if (key.uid() == KRadioPSUid && key.key()

        == KRadioStartupKey) {

        LOG("KRadioStartupKey changed");

        radioRunningStatus(value);

    }

}

/*!

    Handling changes in radio running P&S key.

    \param value is int representation of time in seconds when radio was

    started.

 */

void RadioHsWidgetProfileReader::radioRunningStatus(

    const QVariant &value)

{

    LOG_METHOD_ENTER;

    if (value.canConvert(QVariant::Int)) {

        mRadioStatus = value.toInt();

        // Notify the observer that radio is running.

        mParent.handleRadioStateChange(FmRadio::StateRunning);

    } else {

        mRadioStatus = RADIO_RUNNING_STATUS_UNDEFINED;

        // Notify the observer that radio is not running.

        mParent.handleRadioStateChange(FmRadio::StateNotRunning);

    }

}