/*

* 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:

*

*  Version     : %version: 1 %

*/

#include <QList>

#include "hglogger.h"

#include <hbicon.h>

#include "mydataprovider.h"

//#include "x:\sf\mw\qt\src\openvg\qpixmapdata_vg_p.h"

//typedef VGImage (*pfnVgCreateEGLImageTargetKHR)(VGeglImageKHR);

const int KItemIdRole = Qt::UserRole+1;

const int KThumbnailsPriority = EPriorityLess; //standard priority

MyDataProvider::MyDataProvider(QObject *parent) :

HgDataProviderModel(parent),

mDefaultIcon(new HbIcon(QIcon(QPixmap(":/icons/default.png")))),

mScheduler(new CActiveSchedulerWait()),

mWrapper( new ThumbnailManager() ),

mThumbnailRequestPending(false),

mThumbnailRequestIndex(-1),

mThumbnailRequestID(-1),

mThumbnailsize(ThumbnailManager::ThumbnailMedium),

mMDSLoadInProgress(false)

{

//    TX_ENTRY

    Q_UNUSED(parent);

    mWrapper->setThumbnailSize( mThumbnailsize );

    mWrapper->setQualityPreference( ThumbnailManager::OptimizeForPerformance );

    QObject::connect( mWrapper, SIGNAL(thumbnailReady( QPixmap , void* , int, int ) ),

                      this, SLOT( thumbnailReady( QPixmap , void* , int , int )));

    doResetModel(); //will read mds data

}

MyDataProvider::~MyDataProvider()

{

//    TX_ENTRY

    delete mDefaultIcon;

    delete mWrapper;

    delete mScheduler;

//    TX_EXIT

}

void MyDataProvider::changeIconSize(ThumbnailManager::ThumbnailSize aThumbnailsize)

{

//    TX_ENTRY

//	we could  remove all iconsfrom cache and put default ones, but probably that would be waste of time, and it's better just to load new icons with correct sizes.

	mThumbnailsize = aThumbnailsize;

	mWrapper->setThumbnailSize( mThumbnailsize );

//    TX_EXIT

}

void MyDataProvider::doRequestData(QList<int> list, bool silent)

{

    TX_ENTRY

	Q_UNUSED(silent);

    QString items = "Requested items:";

    int i = 0;

	for (int idx=0; idx<list.count(); idx++){

        i = list[idx];

		if (containsRole(i, KItemIdRole) && !containsRole(i, Qt::DecorationRole)) {//if there is icon, don't request new one

            items += QString("%0 ").arg(i);

			mWaitingThumbnails.append(i);

		}

	}

	TX_LOG_ARGS(items);

    getNextThumbnail();

    TX_EXIT

}

void MyDataProvider::getNextThumbnail()

{

//    TX_ENTRY

    if ( !mThumbnailRequestPending && mWaitingThumbnails.count()){

            int i = mWaitingThumbnails.takeFirst();

            if (i >=0 && i < count() && containsRole(i, KItemIdRole)) {

                int id = (data(i, KItemIdRole)).toInt();

                unsigned long int uId = (unsigned long int)id;

//                TX_LOG_ARGS(QString("getThumbnail for index:%0 uID:%1").arg(i).arg(uId));

                void *clientData = reinterpret_cast<void *>(i);

                mThumbnailRequestID = mWrapper->getThumbnail(uId, clientData, KThumbnailsPriority);

                mThumbnailRequestIndex = i;

                mThumbnailRequestPending = true;            

        }

    }

//    TX_EXIT    

}

void MyDataProvider::readMDSData()

{

    mMDSLoadInProgress = true;

}

void MyDataProvider::thumbnailReady( QPixmap pixmap, void* data, int id, int error )

{

//    TX_ENTRY    

    Q_UNUSED(id);

    if (!error && pixmap.rect().height()>0  && pixmap.rect().width()>0 ){

        int idx = reinterpret_cast<int>(data);

//        TX_LOG_ARGS(QString("thumbnailReady idx = %0").arg(idx));

        updateIcon(idx, createIcon(idx, pixmap));

	} else {

        TX_LOG_ARGS(QString("error:%0 id:%0").arg(error).arg(id));

	}

    mThumbnailRequestIndex = -1;

    mThumbnailRequestID = -1;

    mThumbnailRequestPending = false;            

    getNextThumbnail();

//    TX_EXIT

}

void MyDataProvider::doReleaseData(QList<int> list, bool silent)

{

//    TX_ENTRY    

    Q_UNUSED(silent);

    int i = 0;

    QString items = "Released items:";

    for (int idx=0;idx<list.count(); idx++){

        i = list[idx];

        if (mThumbnailRequestPending && mThumbnailRequestIndex==i ){

            TX_LOG_ARGS( QString("Cancel also thumbnail request for item %0").arg(i));

            mWrapper->cancelRequest(mThumbnailRequestID);

            mThumbnailRequestIndex = -1;

            mThumbnailRequestID = -1;

            mThumbnailRequestPending = false;

        }

        items += QString("%0 ").arg(i);

        mWaitingThumbnails.removeAll(i);

        releasePixmap(i);

    }

    TX_LOG_ARGS(items);

    getNextThumbnail();

//    TX_EXIT        

}

QVariant MyDataProvider::defaultIcon() const

{

    return *mDefaultIcon;

}

void MyDataProvider::HandleSessionOpened(CMdESession& aSession, TInt aError)

{

    Q_UNUSED(aSession);

    Q_UNUSED(aError);	

    mScheduler->AsyncStop();

}

// ----------------------------------------------------------------------------

// HandleQueryCompleted

// ----------------------------------------------------------------------------

//

void MyDataProvider::HandleQueryCompleted(CMdEQuery& aQuery, TInt aError)

{

    Q_UNUSED(aError);	

    clearCache();

    mMDSLoadInProgress = false;

    int size = aQuery.ResultIds().Count();

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

        QList< QPair< QVariant, int > > list;

        unsigned long int id = aQuery.ResultId(i);

        QVariant v;

        v.setValue(id);

        list.append( QPair< QVariant, int >(v, KItemIdRole) );

        int a = count();

        int b = -count();

		int c = a/4 + b/10 + i%30 + i/2;

		QString s = QString("ITEM%1 %2 %3").arg(c).arg(a).arg(b);

		if (i%2){

            s = s.toLower();

		}

        list.append( QPair< QVariant, int >(s, Qt::DisplayRole) );

        list.append( QPair< QVariant, int >(QVariant(a), Qt::UserRole+2) );

        list.append( QPair< QVariant, int >(QVariant(b), Qt::UserRole+3) );

        list.append( QPair< QVariant, int >(QVariant(c), Qt::UserRole+4) );

        newItem(&list);

    }

    TX_LOG_ARGS( QString("size=%1").arg(count()) );

    mScheduler->AsyncStop();

}

void MyDataProvider::doResetModel()

{

    if (mThumbnailRequestPending && mThumbnailRequestID!=-1){

        mWrapper->cancelRequest(mThumbnailRequestID);

    }

    mThumbnailRequestIndex = -1;

    mThumbnailRequestID = -1;

    mThumbnailRequestPending = false;

    mWaitingThumbnails.clear();

    //read MDS data once again

    TRAP_IGNORE(

        CMdESession* session = CMdESession::NewL( *this ); 

        mScheduler->Start();

        CMdENamespaceDef& namespaceDef = session->GetDefaultNamespaceDefL();

        CMdEObjectDef& objectDef = namespaceDef.GetObjectDefL(_L("Image"));

        CMdEObjectQuery* imageQuery = session->NewObjectQueryL( namespaceDef, objectDef, this );

        CleanupStack::PushL( imageQuery );

        imageQuery->SetResultMode( EQueryResultModeId );

        imageQuery->FindL( );

        mScheduler->Start();

        CleanupStack::PopAndDestroy( 1 );

        delete session;        

    );    

//    TX_EXIT    

}