/*

* 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:

*

*/

#include <hbicon.h>

#include "irchannelmodel.h"

#include "irqisdsdatastructure.h"

#include "irsearchresultdb.h"

IrChannelModel::IrChannelModel(QObject *aParent): QAbstractListModel(aParent)

                                                , iChannelList(NULL),iDB(NULL)

{

    iStationLogo = new HbIcon("qtg_large_internet_radio");   

}

IrChannelModel::~IrChannelModel()

{

    clearAndDestroyItems();

    delete iStationLogo;

    iStationLogo = NULL;

    clearAndDestroyLogos();

    if( iDB )

    {

        delete iDB;

        iDB = NULL;

    }

}

int IrChannelModel::rowCount(const QModelIndex &aParent) const

{

    Q_UNUSED(aParent);

    int count = 0;

    if(iChannelList)

    {

        count = iChannelList->count();

    }

    return count;

}

QString IrChannelModel::imageUrl(int aRow)

{

    if (iChannelList)

    {

        return iChannelList->at(aRow)->imageURL;

    }

    else

    {

        return "";

    }

}

void IrChannelModel::setLogo(HbIcon *aIcon, int aIndex)

{

    iLogos[aIndex] = aIcon;

    emit dataChanged(index(aIndex), index(aIndex));

}

QVariant IrChannelModel::data(const QModelIndex &aIndex, int aRole) const

{

    if (!aIndex.isValid())

        return QVariant();

    if (aIndex.row() >= iChannelList->count())

        return QVariant();

    if (aRole == Qt::DisplayRole)

    {

        QVariantList list;

        int row = aIndex.row();

        list.append(iChannelList->at(row)->channelName);       

        // fix bug #9888,if left descriptions as blank, only one line appears

        QString tempDes = iChannelList->at(row)->shortDescription;        

        if( 0 == tempDes.length() )

        {

            tempDes = " ";

        }

        list.append(tempDes);       

        return list;

    }

    else if (aRole == Qt::DecorationRole)

    {

        QVariantList list;

        int row = aIndex.row();

        const HbIcon *icon = iLogos.value(row);

        if (icon)

        {

            list.append(*icon);

        }

        else

        {

            list.append(*iStationLogo);

        }

        return list;

    }

    else

    {

        return QVariant();

    }

}

void IrChannelModel::updateData(QList<IRQChannelItem*> *aPushItemsList)

{

    if (iChannelList != aPushItemsList)

    {

        clearAndDestroyItems();

        iChannelList = aPushItemsList;

    }

    clearAndDestroyLogos();

    emit dataAvailable();

}

void IrChannelModel::initWithCache()

{

    if( NULL == iDB )

    {

        iDB = new IRSearchResultDB();

    }

    QList<IRQChannelItem*> *channelList = iDB->getCahcedChannelList();

    if( NULL == channelList )

    {

        //some error happens

        return;

    }

    clearAndDestroyItems();

    clearAndDestroyLogos();

    iChannelList = channelList;    

}

void IrChannelModel::save2Cache()

{

    if( NULL == iChannelList )

    {

        return;

    }

    //ignore the return value   

    iDB->cacheChannelList(iChannelList);

}

IRQChannelItem * IrChannelModel::getChannelItemByIndex(int aIndex)

{

    if( aIndex < 0 || aIndex >= iChannelList->count() )

    {

        return NULL;

    }

    return iChannelList->at(aIndex);

}

void IrChannelModel::clearAndDestroyLogos()

{

    for (QMap<int, HbIcon*>::iterator it = iLogos.begin(); it != iLogos.end(); ++it)

    {

        delete it.value();

    }

    iLogos.clear();

}

void IrChannelModel::clearAndDestroyItems()

{

    if (iChannelList)

    {

        for (QList<IRQChannelItem*>::iterator it = iChannelList->begin(); it != iChannelList->end(); ++it)

        {

            delete *it;

        }

        delete iChannelList;

        iChannelList = NULL;

    }

}