/** @file

* Copyright (c) 2005-2006 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:  Watches states of control point

*

*/

#ifndef C_CUPNPSTATEUPDATEHANDLER_H

#define C_CUPNPSTATEUPDATEHANDLER_H

//  INCLUDES

#include <e32base.h>

#include "upnpavcontrolpointobserver.h"

// FORWARD DECLARATIONS

class CUpnpService;

class CUpnpAVControlPoint;

// CLASS DECLARATION

/**

*  UPnP event handler.

*  This class contain functions to handle UPnP events.

*

*  @since Series 60 2.6

*/

class CUpnpStateUpdateHandler : public CBase

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        */

	    static CUpnpStateUpdateHandler* NewL( 

            MUpnpAVControlPointObserver& aAVCPObserver,

            CUpnpAVControlPoint& aAVCP );

        /**

        * Destructor.

        */

        virtual ~CUpnpStateUpdateHandler();

    public: // New functions

        /**

        * MAin function for event handling

        * @since Series 60 2.6

        * @param aService Service that has update events.

        * @return KErrNone 

        */

        TInt StateUpdated( CUpnpService*& aService );

        /**

        * Handler for Content Directory events.

        * @since Series 60 2.6

        * @param aDevice Device that has update events

        * @param aService Service that has update events

        * @return KErrNone, KErrNotsupported, KErrGeneral

        */

        TInt ContentDirectoryStateUpdated( 

            CUpnpDevice& aDevice,

            CUpnpService*& aService );

        /**

        * Handler for Connection Manager events.

        * @since Series 60 2.6

        * @param aDevice Device that has update events

        * @param aService Service that has update events

        * @return KErrNone, KErrNotsupported, KErrGeneral

        */

        TInt ConnectionManagerStateUpdated( 

            CUpnpDevice& aDevice, 

            CUpnpService*& aService);

        /**

        * Handler for Rendering Control events.

        * @since Series 60 2.6

        * @param aDevice Device that has update events

        * @param aService Service that has update events

        * @return KErrNone, KErrNotsupported, KErrGeneral

        */

        TInt RenderingControlStateUpdated( CUpnpDevice& aDevice, CUpnpService*& aService );

        /**

        * Handler for AV Transport events.

        * @since Series 60 2.6

        * @param aDevice Device that has update events

        * @param aService Service that has update events

        * @return KErrNone, KErrNotsupported, KErrGeneral

        */

        TInt AVTransportStateUpdated( CUpnpDevice& aDevice, CUpnpService*& aService );

    private:

        /**

        * C++ default constructor.

        */

	    CUpnpStateUpdateHandler( MUpnpAVControlPointObserver& aAVCPObserver, 

	    							CUpnpAVControlPoint& aAVCP );

        /**

        * By default Symbian 2nd phase constructor is private.

        */

	    void ConstructL();

    private:    // Data

        //observer that is intrested about AVCP actions

          MUpnpAVControlPointObserver& iAVControlPointObserver;

          //AVCP main class

          CUpnpAVControlPoint& iAVCP;

    };

#endif      // C_CUPNPSTATEUPDATEHANDLER_H   

// End of File