/**

 * Copyright (c) 2010 Sasken Communication Technologies Ltd.

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the "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:

 * Chandradeep Gandhi, Sasken Communication Technologies Ltd - Initial contribution

 *

 * Contributors:

 * Manasij Roy, Nalina Hariharan

 * 

 * Description:

 * The music rating class represents an instance of rating 

 * about a music track

 *

 */

#ifndef SMFMUSICRATING_H_

#define SMFMUSICRATING_H_

#include <QObject>

#include <QSharedData>

#include <smfclientglobal.h>

class SmfTrackInfo;

class SmfMusicRatingPrivate;

/**

 * Indicates range of values to represent ratings,

 * SP should normalize their rating value to this scale

 */

const int SMF_MAX_RATING = 10;

const int SMF_MIN_RATING = 0;

/**

 * @ingroup smf_common_group

 * The music rating class represents an instance of rating 

 * about a music track 

 */

class SMFCLIENT_EXPORT SmfMusicRating : public QObject

	{

	Q_OBJECT

public:

	/**

	 * Constructor with default argument

	 * @param aParent The parent object

	 * (parent should be of type SmfTrackInfo)

	 */

	SmfMusicRating(SmfTrackInfo *aParent = 0);

	/**

	 * Copy Constructor

	 * @param aOther The reference object

	 */

	SmfMusicRating( const SmfMusicRating &aOther );

	/**

	 * Overloaded = operator 

	 * @param aOther The reference object

	 */

	SmfMusicRating& operator=( const SmfMusicRating &aOther );

	/**

	 * Destructor

	 */

	~SmfMusicRating( );

	/**

	 * Method to get the rating

	 * @return The rating value

	 */

	int rating( ) const;

	/**

	 * Method to get the max rating

	 * @return The max rating value

	 */

	int maxRating( ) const;

	/**

	 * Method to get the min rating

	 * @return The min rating value

	 */

	int minRating( ) const;

private:

	QSharedDataPointer<SmfMusicRatingPrivate> d;

	friend QDataStream &operator<<( QDataStream &aDataStream, 

			const SmfMusicRating &aMusicRating );

	friend QDataStream &operator>>( QDataStream &aDataStream, 

			SmfMusicRating &aMusicRating );

	};

/**

 * Method for Externalization. Writes the SmfMusicRating object to 

 * the stream and returns a reference to the stream.

 * @param aDataStream Stream to be written

 * @param aMusicRating The SmfMusicRating object to be externalized

 * @return reference to the written stream

 */

QDataStream &operator<<( QDataStream &aDataStream, 

		const SmfMusicRating &aMusicRating );

/**

 * Method for Internalization. Reads a SmfMusicRating object from 

 * the stream and returns a reference to the stream.

 * @param aDataStream Stream to be read

 * @param aMusicRating The SmfMusicRating object to be internalized

 * @return reference to the stream

 */

QDataStream &operator>>( QDataStream &aDataStream, 

		SmfMusicRating &aMusicRating);

// Make the class SmfMusicRating known to QMetaType, so that as to register it.

Q_DECLARE_METATYPE(SmfMusicRating)

#endif /* SMFMUSICRATING_H_ */