/*

* 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:

*

*/

#ifndef DATAPROVIDERHELPER_H

#define DATAPROVIDERHELPER_H

#include <hgwidgets/hgdataprovidermodel.h>

#include <QList>

#include <QPair>

class DataProviderHelper : public HgDataProviderModel, public HgDataProviderModelObserver

{

    Q_OBJECT

public:

    DataProviderHelper(int size =1200, QObject *parent = 0);

    ~DataProviderHelper();

//from HgDataProviderModel

    virtual void doReleaseData(QList<int> list, bool silent);

    virtual void doRequestData(QList<int> list, bool silent);  

    virtual QVariant defaultIcon() const;

    virtual void doResetModel();

//from QAbstractItemModel

    virtual bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole);    

    virtual bool setItemData(const QModelIndex &index, const QMap<int, QVariant> &roles);

//for testing

    void testClearCache();

    void testNewItem(QList< QPair< QVariant, int > >* list, bool silent);

    void testNewItem(QPair< QVariant, int > item, bool silent);

    bool testUpdate(int pos, QList< QPair< QVariant, int > >* list, bool silent);

    bool testUpdate(int pos, QVariant obj, int role, bool silent );

    void testRemoveItems(int pos, int size = 1);

    void testRemoveItem(int pos);

    void testInsertItem(int pos, QPair< QVariant, int > item, bool silent);

    QList< QPair< int, int > > getObserverDataUpdated();

    QList< QPair< int, int > > getSignalDataUpdated();

    QList< QPair< int, int > > getSignalRowsAboutToBeInserted();    

    QList< QPair< int, int > > getSignalRowsInserted();

    QList< QPair< int, int > > getSignalRowsAboutToBeRemoved();    

    QList< QPair< int, int > > getSignalRowsRemoved();

    bool getSignalAboutToBeReset();

    bool getSignalReset();    

    QList<int> getLastRelease();

    QList<int> getLastRequest();    

    void testReleasePixmap(int idx);

    QVariant testCreateIcon(int index, QPixmap aPixmap);    

    void testEmitDataChanged(QModelIndex from,QModelIndex to);

    void testEmitHeaderDataChanged(Qt::Orientation orientation, int first, int last);

    void testEmitRowsInsert(QModelIndex parent,int from,int to);

    void testEmitColumnsInsert(QModelIndex parent,int from,int to);

    void testEmitRowsRemove(QModelIndex parent,int from,int to);

    void testEmitColumnsRemove(QModelIndex parent,int from,int to);

    void testEmitLayoutAboutToBeChanged();

    void testEmitLayoutChanged();

    void testEmitModelAboutToBeReset();

    void testEmitModelReset();

//from HgDataProviderModelObserver

public:

    virtual void dataUpdated(int from, int to);

private slots:

    void slotDataUpdated(QModelIndex,QModelIndex);

    void slotRowsAboutToBeInserted(QModelIndex,int,int);

    void slotRowsInserted(QModelIndex,int,int);

    void slotRowsAboutToBeRemoved(QModelIndex,int,int);

    void slotRowsRemoved(QModelIndex,int,int);

    void slotModelAboutToBeReset();

    void slotModelReset();

private:

    QVariant mDefaultIcon;

    QList< QPair< int, int > > mObserverDataUpdated;

    QList< QPair< int, int > > mSignalDataUpdated;

    QList< QPair< int, int > > mSignalRowsAboutToBeInserted;    

    QList< QPair< int, int > > mSignalRowsInserted;

    QList< QPair< int, int > > mSignalRowsAboutToBeRemoved;    

    QList< QPair< int, int > > mSignalRowsRemoved;

    bool mSignalAboutToBeReset;

    bool mSignalReset;    

    QList<int> mLastRelease;

    QList<int> mLastRequest;

};

#endif // DATAPROVIDERHELPER_H