/*

* Copyright (c) 2006-2007 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:  Header file for CIRPubSub

*

*/

#ifndef CIRPUBSUB_H

#define CIRPUBSUB_H

#include <e32base.h>

#include "irpubsubkeys.h"

class CIRMetaData;

class CIRPropertyObserver;

/**

 *  Publish&Subscribe interface of Internet Radio Application.

 */

class CIRPubSub : public CBase

	//public MIRPropertyChangeObserver

    {

public:  // Methods

    /**

     * Static constructor.

     */

    static CIRPubSub* NewL();

    /**

     * Destructor.

     */

    virtual ~CIRPubSub();

    /**

     * Publishes active channel number to P&S.

     *

     * @param aChannelName The channel name to publish.

     */

    void PublishChannel( const TDesC16& aChannelName ) const;

    /**

     * Publishes volume level number to P&S.

     *

     * @param aVol The volume level to publish.

     */

    void PublishVolume( TInt aVol ) const;

    /**

     * Publishes active channel number to P&S.

     *

     * @param aPlayingState The state of palying to publish.

     */

    void PublishPlayStop ( TIRStopPlayState aPlayingState ) const;

    /**

     * Publishes application running state to P&S.

     *

     * @param aRunningState The application running state.

     */

    void PublishApplicationRunningStateL( 

        TIRPSApplicationRunningState aRunningState ) const;

    /**

     * Published meta data information.

     *

     * @param   aMetaData   Meta data information to publish.

     */

    void PublishMetaDataL( const CIRMetaData& aMetaData ) const;

    /**

     * Publishes active channel Type to P&S.

     *

     * @param aChannelName The channel Type to publish.

     */

    void PublishChannelType ( TInt aChannelType ) const;

    /**

     * Publishes active channel Id to P&S.

     *

     * @param aChannelId The channel Id to publish.

     */

    void PublishChannelId ( TInt aChannelId ) const;

    void PublishChannelDesc(const TDesC16& aChannelDesc ) const ;

    void PublishChannelMusicFlag(const TDesC16& aChannelMusicFlag ) const ;

    void PublishBufferingState(TIRBufferingState aState) const;

private: //Methods

	/**

     * C++ default constructor.

     */

    CIRPubSub( );

   void ConstructL();

    /**

     * Defines a property.

     *

     * @param aKey The key of the property.

     * @param aAttr Attributes of the property.

     * @param aDataProperty ETrue if the property is a data property, EFalse 

     * if it is a control property

     */

    void DefinePropertyL( 

        TUint aKey, 

        TInt aAttr, 

        TBool aDataProperty ) const;

    /**

     * Deletes a property.

     *

     * @param aKey The key of the property.

     */

    void DeleteProperty( TUint aKey ) const;        

private:    // Data

	/** 

	 * An array of handlers to P&S interface. 

	 */ 

	RPointerArray<CIRPropertyObserver> iPropertyArray;

public :

    //iRapp application instance count

    TInt iApplicationInstanceCount;

    };

#endif      // CIRPUBSUB_H