/*

* 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:   VideoServices class definition

*

*/

#ifndef __VIDEOSERVICES_H__

#define __VIDEOSERVICES_H__

#include <QStringList>

#include "videoplayerappexport.h"

//FORWARD CLASS DECLARATION

class VideoServiceUriFetch;

class VideoServicePlay;

class VideoServiceView;

class VideoServiceBrowse;

class QVideoPlayerEngine;

class VIDEOPLAYERAPP_DLL_EXPORT VideoServices : public QObject

{

    Q_OBJECT

public:

    /**

     * Returns singleton instance for this class.

     *

     * WARNING! Not safe to call this from destructor of another function scope static object!

     *

     * @return The singleton instance.

     */

    static VideoServices *instance(QVideoPlayerEngine* engine = 0);

    /**

     * Decreases the reference count, when count reaches zero cleanup is done.

     *

     */

    void decreaseReferenceCount();

    /**

     * Returns the context title set by service requestee

     *

     * @return QString the title

     *

     */

    QString contextTitle() const;

	/*

	 * Enum reflecting the services provided 

	 */

    enum TVideoService

    {

        ENoService,

        EUriFetcher,

        EPlayback,

		EView,

        EBrowse

    };

    /**

     * Returns service active status

     *

     * @return bool true if active, false if not active

     *

     */

    VideoServices::TVideoService currentService();

    /**

     * Returns browsing category.

     * 

     * @return see vcxmyvideosdef.h for default categories.

     */

    int getBrowseCategory() const;

public slots:

    void itemSelected(const QString& item);

    void browsingEnded();

signals:

	/*

	 * Emitted when service user has set the title

	 */    

	void titleReady(const QString& title);

	/*

	 * Emitted to acticate requested plugin

	 */

	void activated(int command);

private:

    /**

     * Constructor

     */

    VideoServices();

    /**

     * Constructor

     */

    VideoServices(QVideoPlayerEngine* engine);

    /**

     * Destructor.

     */

    virtual ~VideoServices();

    void setEngine(QVideoPlayerEngine* engine);

    /**

     * Sets the active service

     *

     * @param service

     *

     */

    void setCurrentService(VideoServices::TVideoService service);

    /**

     * Returns the current engine

     *

     * @return engine

     *

     */

    QVideoPlayerEngine* engine();

    Q_DISABLE_COPY(VideoServices)

private:

    /**

     * Reference count.

     */

    int mReferenceCount;

    /**

     * Singleton instance.

     */

    static VideoServices* mInstance;

    /**

     * VideoServiceUriFetch service instance.

     */

    VideoServiceUriFetch* mServiceUriFetch;

    /**

     * VideoServicePlay service instance.

     */

    VideoServicePlay* mServicePlay;

    /**

     * VideoServiceView service instance.

     */    

    VideoServiceView* mServiceView; 

    /**

     * VideoServiceBrowse service instance.

     */

    VideoServiceBrowse *mServiceBrowse;

    /**

     * Pointer of QVideoPlayerEngine.

     */

    QVideoPlayerEngine* mEngine;

	/*

	 * Current service

	 */

    VideoServices::TVideoService mCurrentService;

    friend class VideoServiceUriFetch;

    friend class VideoServicePlay;

	friend class VideoServiceView;

    friend class VideoServiceBrowse;

    };

#endif //__VIDEOSERVICES_H__