/*

* 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: Equalizer widget for Music Player playback view.

*

*/

// System includes

#include <QStringList>

#include <hblabel.h>

#include <hbaction.h>

#include <hbradiobuttonlist.h>

// User includes

#include "mpequalizerwidget.h"

#include "mpequalizerwrapper.h"

#include "mptrace.h"

// CONSTANTS

const int KEqualizerPresetNone = -1;

/*!

    \class MpEqualizerWidget

    \brief Provide radio button list to select a predefined eq. preset

*/

/*!

 Constructs the Equalizer widget.

 */

MpEqualizerWidget::MpEqualizerWidget() :

    mEqualizerWrapper(0),

    mPresetsList(0),

    mOriginalPreset(KEqualizerPresetNone),

    mEqualizerReady(false)

{

    TX_ENTRY

    initialize();

    TX_EXIT

}

/*!

 Destructs the widget.

 */

MpEqualizerWidget::~MpEqualizerWidget()

{

    TX_ENTRY

    delete mEqualizerWrapper;

    TX_EXIT

}

/*!

 Initialize dialog by loading the EqualizerUtility.

 */

void MpEqualizerWidget::initialize()

{

    TX_ENTRY

    mEqualizerWrapper = new MpEqualizerWrapper( this );

    connect( mEqualizerWrapper,

            SIGNAL( equalizerReady() ),

            this,

            SLOT( equalizerReady() ) );

    TX_EXIT

}

/*!

 Prepare dialog by loading the presets list.

 */

void MpEqualizerWidget::prepareDialog()

{

    TX_ENTRY

    setTimeout(NoTimeout);

    setDismissPolicy(HbDialog::NoDismiss);

    setFrameType(HbPopup::Strong);

    if ( mEqualizerReady ) {

        mOriginalPreset = mEqualizerWrapper->activePreset();

        QStringList listItems = mEqualizerWrapper->presetNames();

        listItems.prepend(hbTrId("txt_mus_list_off"));

        int presetSelected;

        if (mOriginalPreset == KEqualizerPresetNone) {

            presetSelected = 0;     //First list item corresponds to "OFF"

        }

        else {

            presetSelected = mOriginalPreset;

        }

        mPresetsList = new HbRadioButtonList(listItems, presetSelected, HbRadioButtonList::NoPreview, this);

        setContentWidget( mPresetsList );  //mPresetsList now owned by HbDialog

        connect( mPresetsList, 

               SIGNAL(itemSelected(int)), 

               this, 

               SLOT(presetSelected(int)));

    }

    TX_EXIT

}

/*!

 Slot to handle when a preset has been selected.

 */

void MpEqualizerWidget::presetSelected(int index)

{

    TX_ENTRY

    if (mEqualizerWrapper) {

        if (index == 0) {

            mEqualizerWrapper->disableEqualizer();

        }

        else{

            mEqualizerWrapper->applyPreset( index );

        }

    }

    TX_EXIT

}

/*!

 Slot to handle when Cancel is selected

 */

void MpEqualizerWidget::cancelSelected(bool checked)

{

    TX_ENTRY

    Q_UNUSED(checked);

    if (mEqualizerWrapper && mPresetsList) {

        // Return to the original Preset

        if (mOriginalPreset != mEqualizerWrapper->activePreset()) {

            if (mOriginalPreset == KEqualizerPresetNone) {

                mEqualizerWrapper->disableEqualizer();

                mPresetsList->setSelected( 0 );     //First list item corresponds to "OFF"

            }

            else {

                mEqualizerWrapper->applyPreset( mOriginalPreset );

                mPresetsList->setSelected( mOriginalPreset );

            }            

        }

    }

    TX_EXIT

}

/*!

 Slot to handle when Ok is selected

 */

void MpEqualizerWidget::okSelected(bool checked)

{

    TX_ENTRY

    Q_UNUSED(checked);    

    //Update original preset

    if (mEqualizerWrapper) {

        mOriginalPreset = mEqualizerWrapper->activePreset();

    }

    TX_EXIT

}

/*!

 Equalizer utility is ready

 */

void MpEqualizerWidget::equalizerReady()

{

    TX_ENTRY

    mEqualizerReady = true;

    TX_EXIT

}

//End of File