/*

* 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:   ?Description

*

*/

#ifndef GLXMEDIAMODEL_H

#define GLXMEDIAMODEL_H

#include <QAbstractItemModel>

#include <glxuistd.h>

#include <QDateTime>

#include <glxexternalinterfacedefs.h>

//forward declarations

#ifdef BUILD_MEDIAMODEL

#define GLX_MEDIAMODEL_EXPORT Q_DECL_EXPORT

#else

#define GLX_MEDIAMODEL_EXPORT Q_DECL_IMPORT

#endif

class HbIcon;

class GlxModelParm;

class GlxMLWrapper;

#include <QCache>

#include <QVector>

class GLX_MEDIAMODEL_EXPORT GlxMediaModel : public QAbstractItemModel

{

Q_OBJECT

public :	

    GlxMediaModel(GlxModelParm & modelParm);

    ~GlxMediaModel();

    int rowCount(const QModelIndex &parent = QModelIndex()) const;

    int columnCount(const QModelIndex &parent = QModelIndex()) const;

    QModelIndex parent(const QModelIndex &child) const;

    QVariant data(const QModelIndex &index, int role) const;

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

    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const;

	/*

	*for setting external image data to the model. 

	*/

	void addExternalItems(GlxExternalData* externalItems);

	/*

	*for removing all external image data from the model. 

	*/

	void clearExternalItems();

	/*

	* for checking if the item is editab

	*/

private:

	HbIcon* GetGridIconItem(int itemIndex, GlxTBContextType tbContextType) const;

	HbIcon* GetFsIconItem(int itemIndex,GlxTBContextType tbContextType)const;

	HbIcon* GetExternalIconItem(int itemIndex,GlxTBContextType tbContextType)const;

/**

 * for setting the attribute context mode will be used mainly for retreiving thumbnail of different sizes.

 */

    void setContextMode(GlxContextMode contextMode);

    void setFocusIndex(const QModelIndex &index);

    QModelIndex getFocusIndex() const;

    void setSelectedIndex(const QModelIndex &index);

signals :

    void iconAvailable(int itemIndex, HbIcon* itemIcon, GlxTBContextType tbContextType) const;

public slots:

	void itemUpdated1(int mlIndex, GlxTBContextType tbContextType);

	void itemsAdded(int startIndex, int endIndex);

	void itemsRemoved(int startIndex, int endIndex);

	void itemCorrupted(int itemIndex);

protected:

private slots:

    void updateItemIcon(int itemIndex, HbIcon* itemIcon, GlxTBContextType tbContextType);

private:

	GlxMLWrapper* mMLWrapper;	

	QCache<int, HbIcon> itemIconCache;

	QCache<int, HbIcon> itemFsIconCache;

	HbIcon* m_DefaultIcon;

	GlxContextMode mContextMode;

	//for external data to be populated by model

	GlxExternalData* mExternalItems;

	QCache<int, HbIcon> itemExternalIconCache;

	int externalDataCount;

	int mFocusIndex;

	int mSubState;

};

#endif /* GLXMEDIAMODEL_H_ */