/*

* 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>

#include <EqualizerConstants.h>

// User includes

#include "mpequalizerwidget.h"

#include "mpenginefactory.h"

#include "mptrace.h"

/*!

    \class MpEqualizerWidget

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

*/

/*!

 Constructs the Equalizer widget.

 */

MpEqualizerWidget::MpEqualizerWidget() :

    mMpEngine(0),

    mPresetsList(0),

    mOriginalPreset(KEqualizerPresetNone)

{

    TX_ENTRY

    initialize();

    TX_EXIT

}

/*!

 Destructs the widget.

 */

MpEqualizerWidget::~MpEqualizerWidget()

{

	TX_LOG

}

/*!

 Initialize dialog by loading the EqualizerUtility.

 */

void MpEqualizerWidget::initialize()

{

    TX_ENTRY

    mMpEngine = MpEngineFactory::sharedEngine();

    TX_EXIT

}

/*!

 Prepare dialog by loading the presets list.

 */

void MpEqualizerWidget::prepareDialog()

{

    TX_ENTRY

    HbAction *action;

    setTimeout(NoTimeout);

	setModal( true );

    setDismissPolicy(HbDialog::NoDismiss);

    setFrameType(HbPopup::Strong);

    setHeadingWidget(new HbLabel(hbTrId("txt_mus_title_select_preset")));

    mOriginalPreset = mMpEngine->activePreset();

    QStringList listItems;

    QStringList presetNames = mMpEngine->presetNames();

    for ( int i=0; i<presetNames.count(); i++ ) {

        QString name = getLocalizedString( presetNames.at(i) );

        if ( name.size() > 0 ) {

            listItems.append( name );

        }

        else {

            // Localized string not found, append original name.

            TX_LOG_ARGS( "Localized string not found = " << name);

            listItems.append( presetNames.at(i) );

        }

    }

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

    TX_LOG_ARGS( "PresetNames=" << listItems);

    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)));

    clearActions();

    action = new HbAction( hbTrId( "txt_common_button_ok" ) );

    connect( action, SIGNAL( triggered( bool ) ), this, SLOT( okSelected( bool ) ) );

    addAction( action );

    action = new HbAction( hbTrId( "txt_common_button_cancel" ) );

    connect( action, SIGNAL( triggered( bool ) ), this, SLOT( cancelSelected( bool ) ) );

    addAction( action );

    TX_EXIT

}

/*!

 Slot to handle when a preset has been selected.

 */

void MpEqualizerWidget::presetSelected(int index)

{

    TX_ENTRY

    if (mMpEngine) {

        if (index == 0) {

            mMpEngine->disableEqualizer();

        }

        else{

            mMpEngine->applyPreset( index );

        }

    }

    TX_EXIT

}

/*!

 Slot to handle when Cancel is selected

 */

void MpEqualizerWidget::cancelSelected(bool checked)

{

    TX_ENTRY

    Q_UNUSED(checked);

    if (mMpEngine && mPresetsList) {

        // Return to the original Preset

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

            if (mOriginalPreset == KEqualizerPresetNone) {

                mMpEngine->disableEqualizer();

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

            }

            else {

                mMpEngine->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 (mMpEngine) {

        mOriginalPreset = mMpEngine->activePreset();

    }

    TX_EXIT

}

/*!

  Return the localized string base on preset name.

 */

QString MpEqualizerWidget::getLocalizedString( QString name )

{

    TX_ENTRY_ARGS( "Name = " << name );

    QString localizedString;

    if ( name == "Bass Booster" ) {

        localizedString = hbTrId( "txt_mus_list_bass_booster" );

    }

    else if ( name == "Classic" ) {

        localizedString = hbTrId( "txt_mus_list_classical" );

    }

    else if ( name == "Pop" ) {

        localizedString = hbTrId( "txt_mus_list_pop" );

    }

    else if ( name == "Jazz" ) {

        localizedString = hbTrId( "txt_mus_list_jazz" );

    }

    else if ( name == "Rock" ) {

        localizedString = hbTrId( "txt_mus_list_rock" );

    }

    TX_EXIT_ARGS( "Logical String = " << localizedString );

    return localizedString;

}

//End of File