/*

* 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:

*

*/

// System includes

#include <QGraphicsSceneMouseEvent>

// User includes

#include "radiostationcarousel.h"

#include "radiouiengine.h"

#include "radiostationmodel.h"

#include "radiofadinglabel.h"

#include "radiologger.h"

#include "radiolocalization.h"

#include "radiostationfiltermodel.h"

#include "radio_global.h"

#ifdef USE_LAYOUT_FROM_E_DRIVE

    const QString KFavoriteIconPath = "e:/radiotest/images/favoriteiconactive.png";

    const QString KNonFavoriteIconPath = "e:/radiotest/images/favoriteiconinactive.png";

#else

    const QString KFavoriteIconPath = ":/images/favoriteiconactive.png";

    const QString KNonFavoriteIconPath = ":/images/favoriteiconinactive.png";

#endif

/*!

 *

 */

RadioStationCarousel::RadioStationCarousel( RadioUiEngine& uiEngine, QGraphicsItem* parent ) :

    HbGridView( parent ),

    mUiEngine( uiEngine ),

    mAntennaAttached( false ),

    mAutoScrollTime( 1000 ),

    mPreviousButtonPos( 0.0 ),

    mMovingLeft( false ),

{

    mAntennaAttached = mUiEngine.isAntennaAttached();

    setScrollDirections( Qt::Horizontal );

    setFrictionEnabled( true );

    setRowCount( 1 );

    setColumnCount( 1 );

    setClampingStyle( HbScrollArea::BounceBackClamping );

    setScrollingStyle( HbScrollArea::PanOrFlick );

    setLongPressEnabled( false );

    setItemRecycling( false ); // TODO: Enable recycling

    setUniformItemSizes( true );

    setSelectionMode( SingleSelection );

    RadioStationFilterModel* filterModel = mUiEngine.createNewFilterModel( this );

    filterModel->setCyclic( false );

    setModel( filterModel );

    mCurrentItem = static_cast<RadioStationItem*>( itemByIndex( model()->index( 0, 0 ) ) );

    updateFrequencies();

    connectAndTest( model(),        SIGNAL(rowsInserted(QModelIndex,int,int)),

                    this,           SLOT(insertFrequency(QModelIndex,int,int)) );

    connectAndTest( model(),        SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)),

                    this,           SLOT(removeFrequency(QModelIndex,int,int)) );

//    connectAndTest( model(),        SIGNAL(layoutChanged()),

//                    this,           SLOT(updateFrequencies()) );

    connectAndTest( this,           SIGNAL(scrollingEnded()),

                    this,           SLOT(updateLoopedPos()) );

    RadioStationModel* stationModel = &mUiEngine.model();

    connectAndTest( stationModel,   SIGNAL(favoriteChanged(RadioStation)),

                    this,           SLOT(update(RadioStation)) );

    connectAndTest( stationModel,   SIGNAL(stationDataChanged(RadioStation)),

                    this,           SLOT(update(RadioStation)));

    connectAndTest( stationModel,   SIGNAL(radioTextReceived(RadioStation)),

    connectAndTest( stationModel,   SIGNAL(dynamicPsChanged(RadioStation)),

                    this,           SLOT(update(RadioStation)));

}

/*!

 * Property

 *

 */

void RadioStationCarousel::setBackground( const HbIcon& background )

{

    mBackground = background;

}

/*!

 * Property

 *

 */

HbIcon RadioStationCarousel::background() const

{

    return mBackground;

}

/*!

 *

 */

RadioUiEngine& RadioStationCarousel::uiEngine()

{

    return mUiEngine;

}

/*!

 *

 */

bool RadioStationCarousel::isAntennaAttached() const

{

    return mAntennaAttached;

}

/*!

 * Private slot

 */

void RadioStationCarousel::update( const RadioStation& station )

{

    RadioStationItem* item = currentStationItem();

    if ( item && item->frequency() == station.frequency() ) {

        item->update( &station );

    }

}

/*!

 * Private slot

 */

void RadioStationCarousel::leftGesture( int speedPixelsPerSecond )

{

    Q_UNUSED( speedPixelsPerSecond );

    QModelIndex index = currentIndex();

    if ( index == model()->index( model()->rowCount() - 1, 0 ) ) {

        index = model()->index( 0, 0 );

    } else {

        index = nextIndex( index );

    }

    scrollToIndex( index, mAutoScrollTime );

}

/*!

 * Private slot

 */

void RadioStationCarousel::rightGesture( int speedPixelsPerSecond )

{

    Q_UNUSED( speedPixelsPerSecond );

    QModelIndex index = currentIndex();

    if ( index == model()->index( 0, 0 ) ) {

        index = model()->index( model()->rowCount() - 1, 0 );

    } else {

        index = previousIndex( index );

    }

    scrollToIndex( index, mAutoScrollTime );

}

/*!

 * Private slot

 */

void RadioStationCarousel::insertFrequency( const QModelIndex& parent, int first, int last )

{

    Q_UNUSED( parent );

    QAbstractItemModel* freqModel = model();

    for ( int i = first; i <= last; ++i ) {

        QModelIndex index = freqModel->index( i, 0 );

        RadioStation station = freqModel->data( index, RadioStationModel::RadioStationRole ).value<RadioStation>();

        mModelIndexes.insert( station.frequency(), index );

        LOG_FORMAT( "Added frequency %u", station.frequency() );

        scrollToIndex( index, 0 );

    }

}

/*!

 * Private slot

 */

void RadioStationCarousel::removeFrequency( const QModelIndex& parent, int first, int last )

{

    Q_UNUSED( parent );

    QAbstractItemModel* freqModel = model();

    for ( int i = first; i <= last; ++i ) {

        QModelIndex index = freqModel->index( i, 0 );

        RadioStation station = freqModel->data( index, RadioStationModel::RadioStationRole ).value<RadioStation>();

        mModelIndexes.remove( station.frequency() );

    }

}

/*!

 * Private slot

 */

void RadioStationCarousel::updateFrequencies()

{

    mModelIndexes.clear();

    QAbstractItemModel* itemModel = model();

    const int count = itemModel->rowCount();

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

        QModelIndex index = itemModel->index( i, 0 );

        uint frequency = itemModel->data( index, RadioStationModel::RadioStationRole ).value<RadioStation>().frequency();

        mModelIndexes.insert( frequency, index );

    }

}

/*!

 * Private slot

 */

void RadioStationCarousel::updateLoopedPos()

{

    const int row = currentIndex().row();

    if ( filterModel()->hasLooped( currentIndex() ) ) {

        QModelIndex realIndex = filterModel()->realIndex( currentIndex() );

        scrollTo( realIndex );

        setCurrentIndex( realIndex, QItemSelectionModel::SelectCurrent );

//        scrollToIndex( realIndex , 0 );

        LOG_FORMAT( "Index %d has looped. real index is %d", row, realIndex.row() );

    }

}

/*!

 * Public slot

 *

 */

void RadioStationCarousel::setFrequency( uint frequency )

{

    RadioStationItem* item = currentStationItem();

    if ( item && item->mFrequency == frequency ) {

        return;

    }

/*

    QModelIndex index = static_cast<RadioStationFilterModel*>( model() )->modelIndexFromFrequency( frequency );

    if ( index.isValid() ) {

        scrollToIndex( index, 0 );

    } else {

        if ( item ) {

            item->setFrequency( frequency );

        }

    }

    */

/*

    QAbstractItemModel* itemModel = model();

    const int count = itemModel->rowCount();

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

        QModelIndex index = itemModel->index( i, 0 );

        uint stationFrequency = itemModel->data( index, RadioStationModel::RadioStationRole ).value<RadioStation>().frequency();

        if ( frequency == stationFrequency ) {

            scrollToIndex( index, mAutoScrollTime );

            return;

        }

    }

 */

    if ( mModelIndexes.contains( frequency ) ) {

        QModelIndex index = mModelIndexes.value( frequency );

        scrollToIndex( index, 0 );

    } else {

        if ( item ) {

            item->setFrequency( frequency );

        }

    }

}

/*!

 * Public slot

 *

 */

void RadioStationCarousel::setSeekingText()

{

    RadioStationItem* item = currentStationItem();

    if ( item ) {

        item->setSeekingText();

    }

}

/*!

 * Public slot

 */

void RadioStationCarousel::updateHeadsetStatus( bool connected )

{

    mAntennaAttached = connected;

    RadioStationItem* item = currentStationItem();

    if ( item  ) {

        item->update();

    }

}

/*!

 * \reimp

 *

 */

void RadioStationCarousel::paint( QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget )

{

    mBackground.paint( painter, QRectF( QPoint( 0, 0 ), size() ), Qt::IgnoreAspectRatio );

    HbGridView::paint( painter, option, widget );

}

/*!

 * \reimp

 */

void RadioStationCarousel::mouseMoveEvent( QGraphicsSceneMouseEvent* event )

{

    HbGridView::mouseMoveEvent( event );

}

/*!

 * \reimp

 */

void RadioStationCarousel::mouseReleaseEvent( QGraphicsSceneMouseEvent* event )

{

    QPointF pos = QPointF( size().width() / 2, size().height() / 2 );

    HbAbstractViewItem* item = itemAtPosition( pos );

    if ( item ) {

        scrollToIndex( item->modelIndex(), mAutoScrollTime );

    }

    HbGridView::mouseReleaseEvent( event );

}

/*!

 * \reimp

 */

void RadioStationCarousel::resizeEvent( QGraphicsSceneResizeEvent* event )

{

    HbGridView::resizeEvent( event );

    QModelIndex index = filterModel()->modelIndexFromFrequency( mUiEngine.currentFrequency() );

    setCurrentIndex( index, QItemSelectionModel::SelectCurrent );

    scrollTo( index );

}

/*!

 *

 */

RadioStationItem* RadioStationCarousel::currentStationItem()

{

    return static_cast<RadioStationItem*>( currentViewItem() );

//    return mCurrentItem;

}

/*!

 *

 */

RadioStationFilterModel* RadioStationCarousel::filterModel() const

{

    return static_cast<RadioStationFilterModel*>( model() );

}

/*!

 *

 */

void RadioStationCarousel::scrollToIndex( const QModelIndex& index, int time )

{

    RadioStationItem* item = static_cast<RadioStationItem*>( itemByIndex( index ) );

    if ( index.isValid() && item ) {

        int posX = item->pos().x();

        const int currentRow = currentIndex().row();

        const int nextRow = index.row();

        if ( currentRow != nextRow ) {

            LOG_FORMAT( "Current row is %d, scrolling to row %d", currentRow, nextRow);

        }

        if ( !filterModel()->isEqual( currentIndex(), index ) ) {

            setCurrentIndex( index, QItemSelectionModel::SelectCurrent );

            mCurrentItem = static_cast<RadioStationItem*>( item );

        }

        scrollContentsTo( QPointF( posX, 0 ) , time );

    }

}