/*

* Copyright (c) 2010 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:

*

*/

#include "cxutils.h"

#include "cxestate.h"

#include "cxesettings.h"

#include "cxenamespace.h"

#include "cxestillcapturecontrol.h"

#include "cxevideocapturecontrol.h"

#include "cxegeotaggingtrail_desktop_p.h"

namespace

{

    // in milliseconds

    const int STOP_TRAIL_INTERVAL = 10*1000;

}

/*!

* Constructor

*/

CxeGeoTaggingTrailPrivate::CxeGeoTaggingTrailPrivate(CxeStillCaptureControl &stillControl,

                                                     CxeVideoCaptureControl &videoControl,

													 CxeSettings &settings)

    : CxeStateMachine("CxeGeoTaggingTrailPrivate"),

      mSettings(settings)

{

    CX_DEBUG_ENTER_FUNCTION();	

    Q_UNUSED(stillControl);

    Q_UNUSED(videoControl);

    qRegisterMetaType<CxeGeoTaggingTrail::State>();

    initializeStates();

    connect(&mSettings, SIGNAL(settingValueChanged(const QString&,QVariant)),

            this, SLOT(handleSettingValueChanged(const QString&,QVariant)));

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Destructor

*/

CxeGeoTaggingTrailPrivate::~CxeGeoTaggingTrailPrivate()

{

    CX_DEBUG_ENTER_FUNCTION();

    // stop trail and close location utility session

    stop(true);

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Start location trail.

*/

void CxeGeoTaggingTrailPrivate::start()

{

    CX_DEBUG_ENTER_FUNCTION();

    setState(CxeGeoTaggingTrail::Connected);

    setState(CxeGeoTaggingTrail::TrailStarted);

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Stop location trail.

* @ param closeSession, indicates if we are willing to close the location utility session.

*/

void CxeGeoTaggingTrailPrivate::stop(bool closeSession)

{

    CX_DEBUG_ENTER_FUNCTION();

    setState(CxeGeoTaggingTrail::NotConnected);

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

* Handle new setting value.

* Check if the geotagging setting has changed.

*/

void CxeGeoTaggingTrailPrivate::handleSettingValueChanged(const QString& settingId, QVariant newValue)

{

    CX_DEBUG_ENTER_FUNCTION();

    if (settingId == CxeSettingIds::GEOTAGGING) {

        if (newValue.toInt() == Cxe::GeoTaggingOn) {

            // setting is turned ON, start location trail

            start();

        } else {

            // setting is turned OFF, stopping location trail

            stop();

        }

    } else if (settingId == CxeSettingIds::GEOTAGGING_DISCLAIMER) {

        if (newValue.toInt() == Cxe::GeoTaggingDisclaimerDisabled) {

            // geotagging disclaimer is diabled, we can start location trail.

            start();

        }

    }

    CX_DEBUG_EXIT_FUNCTION();

}

/*!

Returns current state of Location trail

*/

CxeGeoTaggingTrail::State CxeGeoTaggingTrailPrivate::state() const

{

    return static_cast<CxeGeoTaggingTrail::State> (stateId());

}

/*!

* slot called when state is changed.

*/

void CxeGeoTaggingTrailPrivate::handleStateChanged(int newStateId, CxeError::Id error)

{

    emit stateChanged(static_cast<CxeGeoTaggingTrail::State> (newStateId), error);

}

/*!

* Initialize states for geotaggingtrail

*/

void CxeGeoTaggingTrailPrivate::initializeStates()

{

    // addState( id, name, allowed next states )

    addState(new CxeState(CxeGeoTaggingTrail::NotConnected, "NotConnected", CxeGeoTaggingTrail::Connected));

    addState(new CxeState(CxeGeoTaggingTrail::Connected, "Connected", CxeGeoTaggingTrail::TrailStarted | 

                                                                      CxeGeoTaggingTrail::NotConnected));

    addState(new CxeState(CxeGeoTaggingTrail::TrailStarted, "TrailStarted", CxeGeoTaggingTrail::DataAvailable |

                                                                            CxeGeoTaggingTrail::Connected |

                                                                            CxeGeoTaggingTrail::NotConnected));

    addState(new CxeState(CxeGeoTaggingTrail::DataAvailable, "DataAvailable", CxeGeoTaggingTrail::Connected | 

                                                                              CxeGeoTaggingTrail::NotConnected));

    setInitialState(CxeGeoTaggingTrail::NotConnected);

}

// end of file