/*

* 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:   CVideoThumbnailData class definition*

*/

#ifndef __VIDEOTHUMBNAILDATA_H__

#define __VIDEOTHUMBNAILDATA_H__

// INCLUDES

#include <qobject.h>

#include <qhash.h>

#include <qpair.h>

#include <qicon.h>

#include <qset.h>

// FORWARD DECLARATIONS

class VideoProxyModelGeneric;

class VideoThumbnailData : public QObject

{

    /**

     * defined to be able to use signals and slots

     */

    Q_OBJECT

    /**

     * disable copy-constructor and assignment operator

     */

	Q_DISABLE_COPY(VideoThumbnailData) 

public: // Constructor

    /* 

     * Thumbnail fetch priorities

     */

    enum VideoThumbnailPriority

    {

        VideoThumbnailPriorityBackground = 2000,

        VideoThumbnailPriorityLow = 5000,

        VideoThumbnailPriorityMedium = 10000,

        VideoThumbnailPriorityHigh = 2000 

    };

    /**

     * Returns singleton instance for this class.

     *

     * @return The singleton instance.

     * 

     */

    static VideoThumbnailData &instance();

    /**

     * Starts background thumbnail fetching.

     *

     * @param fetchIndex index where to start the background thumbnail fetching.

     *  

     */

    void startBackgroundFetching(VideoProxyModelGeneric *model, int fetchIndex);

    /**

     * Enables or disables thumbnail background fetching. Default is enabled.

     * 

     * @param enable true enables and false disables thumbnail background fetching.

     */

    void enableBackgroundFetching(bool enable);

    /**

     * Frees allocated data for thumbnails and cancels ongoing fetches.

     */

    void freeThumbnailData();

private:

    /**

     * Default constructor

     */

    VideoThumbnailData();  

    /**

     * Destructor

     */

    ~VideoThumbnailData(); 

public:

    static int mEnableBackgroundThumbnailFetchingCallCount;

    static int mStartFetchingThumbnailsCallCount;

    static int mStartFetchingThumbnailsThumbnailCount;

    static int mInstanceCallCount;

    static int mFreeThumbnailDataCallCount;

    static int mBackgroundThumbnailFetchingEnabled;

    static int mStartBackgroundFetchingCallCount;

private: // data

};

#endif  // __VIDEOTHUMBNAILDATA_H__

// End of file