/*

* 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 <QPixmap>

#include <hblistview.h>

#include <hbaction.h>

#include <QTimer>

#include <hbscrollbar.h>

#include <hgwidgets/hgcacheproxymodel.h>

#include "irviewmanager.h"

#include "irstationsview.h"

#include "irapplication.h"

#include "irplaycontroller.h"

#include "irqisdsclient.h"

#include "irqenums.h"

#include "irqutility.h"

#include "irchanneldataprovider.h"

#include "irqisdsdatastructure.h"

#include "irqnetworkcontroller.h"

const uint KConnectTimeOut = 15000; //if the connecting take more than 15 seconds, we will show a pop up

//                                      public functions

/*

 * Description : constructor

 */

IRStationsView::IRStationsView(IRApplication* aApplication, TIRViewId aViewId) 

                               : IrAbstractListViewBase(aApplication, aViewId),

                               iPreset(NULL), 

                               iLastSelectitem(0)                        

{       

    iDataProvider = new IRChannelDataProvider(this);

    HgCacheProxyModel *model = new HgCacheProxyModel(this);

    model->setDataProvider(iDataProvider, KCacheSize, KCacheThreshold);

    iListView->setModel(model);

    iConnectTimer = new QTimer(this);

    iConnectTimer->setInterval(KConnectTimeOut);     

    connect(iDataProvider, SIGNAL(dataAvailable()), this, SLOT(dataChanged()));    

    connect(iNetworkController, SIGNAL(networkRequestNotified(IRQNetworkEvent)),

            this, SLOT(networkRequestNotified(IRQNetworkEvent)));    

    connect(iConnectTimer, SIGNAL(timeout()), this, SLOT(connectTimeOut()));

}

/*

 * Description : destructor

 */

IRStationsView::~IRStationsView()

{

    delete iPreset;

    iPreset = NULL;

}

void IRStationsView::loadCategoryStations(int aIndex, const QString &aHeadingText)

{

    connectToIsdsClient();

    setHeadingText(aHeadingText);

    bool cache = false;

    iIsdsClient->isdsChannelRequest(aIndex, cache);

    if (!cache)

    {

        iApplication->startLoadingAnimation(this, SLOT(cancelRequest()));

    }

}

void IRStationsView::storeCurrentItem()

{

    iLastSelectitem = iListView->currentIndex().row();

}

void IRStationsView::resetCurrentItem()

{

    iLastSelectitem = 0;

}

/*

 * Description : from base class IRBaseView.

 *               handle view commands.

 * Parameters  : aCommand : see the definition of TIRViewCommand

 * Return      : EIR_DoDefault : caller does default handling

 *               EIR_NoDefault : caller doesn't do default handling

 */

TIRHandleResult IRStationsView::handleCommand(TIRViewCommand aCommand, TIRViewCommandReason aReason)

{

    TIRHandleResult ret = IrAbstractListViewBase::handleCommand(aCommand, aReason);

    switch (aCommand)

    {   

    case EIR_ViewCommand_ACTIVATED:

        connect(iIsdsClient, SIGNAL(presetResponse(IRQPreset *)),

                this, SLOT(presetResponse(IRQPreset *)));

        iDataProvider->activate();

        ret = EIR_NoDefault;

        break;

    case EIR_ViewCommand_DEACTIVATE:

        iConnectTimer->stop();       

        iDataProvider->deactivate();

        disconnect(iIsdsClient, SIGNAL(presetResponse(IRQPreset *)),

                   this, SLOT(presetResponse(IRQPreset *)));       

        ret = EIR_NoDefault;

        break;

    default:

        break;

    }

    return ret;

}

#ifdef HS_WIDGET_ENABLED

void IRStationsView::itemAboutToBeSelected(bool &aNeedNetwork)

{

    aNeedNetwork =  true;

    int index = iListView->currentIndex().row();

}

#endif

//                                      slots functions

/*

 * Description : slot function when an item in a list is clicked.

 *               issue a listen request to isds client

 * Parameters  : aItem : pointer to the clicked item.

 */

void IRStationsView::handleItemSelected()

{

    if (iListView)

    {

        int index = iListView->currentIndex().row();

        if (index != -1)  

        {

            if (iIsdsClient)

            {

                connect(iIsdsClient, SIGNAL(operationException(IRQError)),

                        this, SLOT(operationException(IRQError)));

                //once an item is selected, we show a dialog to prevent user from clicking the

                //item again

                iApplication->startLoadingAnimation(this, SLOT(cancelRequest()));

                if (iIsdsClient->isdsIsChannelBanner())

                {

                    iIsdsClient->isdsListenRequest(index + 1);

                }

                else

                {

                    iIsdsClient->isdsListenRequest(index);

                }

            }

        }

    }

}

/*

 * Description : data is received from isds client. Load the data to the list widget and display

 *               the stations view

 */

void IRStationsView::dataChanged()

{

    iConnectTimer->stop();

    disconnectIsdsClient();

    iListView->reset();

    iListView->setCurrentIndex(iDataProvider->index(iLastSelectitem, 0));

    iListView->scrollTo(iDataProvider->index(iLastSelectitem, 0));

    qreal value = 0.0;

    if (iListView->model()->rowCount() > 0)

    {

        value = iLastSelectitem / iListView->model()->rowCount();

    }

    iListView->verticalScrollBar()->setValue(value);

    getViewManager()->activateView(this);

    iApplication->stopLoadingAnimation();

}

/*

 * Description : the preset of the selected station is received from isds client.

 *               application is responsible for deleting old preset.

 *               call player controler to play the station

 * Parameters  : aPreset : the preset of the selected station            

 */

void IRStationsView::presetResponse(IRQPreset *aPreset)

{

    disconnect(iIsdsClient, SIGNAL(operationException(IRQError)),

               this, SLOT(operationException(IRQError)));

    delete iPreset;

    iPreset = aPreset;

    if (iPreset)

    {

        iPlayController->connectToChannel(iPreset,EIRQIsds);

    }

}

/*

 * Description  : slot function for operation failure. The signal is emitted by isds client

 * Parameters   : aError : see the definition of IRQError

 */

void IRStationsView::operationException(IRQError aError)

{

    iApplication->stopLoadingAnimation();

    disconnectIsdsClient();

#ifdef SUBTITLE_STR_BY_LOCID

    QString errorString = hbTrId("txt_irad_info_failed_to_connect");

#else

    QString errorString = hbTrId("Connecting failed");    

#endif

    switch (aError)

    {   

    case EIRQErrorNotFound:

#ifdef SUBTITLE_STR_BY_LOCID

        errorString = hbTrId("txt_irad_info_no_matching_station_found");

#else

        errorString = hbTrId("No matching station found");        

#endif

        if (iConnectTimer->isActive())

        {

            iConnectTimer->stop();

        }

        break;

        default:

            break;

    }

    popupNote(errorString, HbMessageBox::MessageTypeWarning);

}

void IRStationsView::cancelRequest()

{

    if( iConnectTimer->isActive())

    {

        iConnectTimer->stop();

    }    

    iIsdsClient->isdsCancelRequest();

    disconnectIsdsClient();

    iApplication->stopLoadingAnimation();

}

void IRStationsView::networkRequestNotified(IRQNetworkEvent aEvent)

{

    if (getViewManager()->currentView() != this)

    {

        return;

    }

    switch (aEvent)

    {

    case EIRQNetworkConnectionEstablished:

        if (EIR_UseNetwork_SelectItem == getUseNetworkReason())

        {

            handleItemSelected();

        }

        break;

    default:

        setCheckedAction();       

        break;

    }

    setUseNetworkReason(EIR_UseNetwork_NoReason);

}

void IRStationsView::connectToIsdsClient()

{

    connect(iIsdsClient, SIGNAL(channelItemsChanged(QList<IRQChannelItem *> *)),

            iDataProvider, SLOT(updateData(QList<IRQChannelItem *> *)));

    connect(iIsdsClient, SIGNAL(operationException(IRQError)),

            this, SLOT(operationException(IRQError)));

}

void IRStationsView::disconnectIsdsClient()

{

    disconnect(iIsdsClient, SIGNAL(channelItemsChanged(QList<IRQChannelItem *> *)),

               iDataProvider, SLOT(updateData(QList<IRQChannelItem *> *)));

    disconnect(iIsdsClient, SIGNAL(operationException(IRQError)),

               this, SLOT(operationException(IRQError)));

}

void IRStationsView::connectTimeOut()

{    

    iConnectTimer->stop();

    cancelRequest();   

#ifdef SUBTITLE_STR_BY_LOCID

    popupNote(hbTrId("txt_irad_info_connecting_timout"), HbMessageBox::MessageTypeWarning);

#else

    popupNote(hbTrId("Connecting timeout"), HbMessageBox::MessageTypeWarning);    

#endif

}