/*

* 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 CXEIMAGEDATAQUEUE_H

#define CXEIMAGEDATAQUEUE_H

#include <QObject> 

class CxeImageDataItem;

class QImage;

/**

 * CxeImageDataQueue is responsible managing a queue of objects that are saved to

 * the file system in the background

 */

class CxeImageDataQueue : public QObject

{

    Q_OBJECT

public:

    /**

     * Get the number of objects in the queue.

     *

     * @return The number of items in the queue

     */

    virtual int size() const = 0;

    /**

     * Clear the queue, cancel the current save operation (if any) and destroy

     * all unsaved objects

     */

    virtual void clear() = 0;

    //virtual void deleteImage( int index ) = 0;

    //virtual void renameImage( int index, const QString& path ) = 0;

    /**

     * Access individual items in the queue.

     *

     * @param index Item index. Must be 0 <= index < size()

     * @return Reference to the item

     */

    virtual CxeImageDataItem &operator[]( int index ) = 0;

signals:

    void fileSaved( int index, int error ); // index, error

protected:

    CxeImageDataQueue() {}

private:

    Q_DISABLE_COPY( CxeImageDataQueue )

};

#endif // CXEIMAGEDATAQUEUE_H