/*

* Copyright (c) 2003 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:  Implement SIM state observer for card removed event

*

*/

#ifndef CSWIMSYSAGENTOBSERVER_H

#define CSWIMSYSAGENTOBSERVER_H

//  INCLUDES

#include <e32base.h>

#include <e32property.h> // RProperty

//  FORWARD DECLARATIONS

class CSwimReaderIF;

// CLASS DECLARATION

/**

*  Publish and subscribe Observer class

*  This class listens P/S events

*

*  @lib SwimReader.lib

*  @since Series60 1.2

*/

class CSwimSysAgentObserver : public CActive

    {

    public: // Constructors and destructor

        /**

        * Two-phased constructor.

        * @param aReaderIF Pointer to ReaderIF owning this observer

        */ 

        static CSwimSysAgentObserver* NewL( CSwimReaderIF* aReaderIF );

        /**

        * Destructor.

        */

        virtual ~CSwimSysAgentObserver();

    public: // New functions

        /**

        * Starts listener

        * @return void 

        */

        void Start();

    private: 

        /**

        * C++ default constructor.

        * @param aReaderIF Pointer to ReaderIF owning this observer

        */ 

        CSwimSysAgentObserver( CSwimReaderIF* aReaderIF );

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

        /**

        * This function starts listening card state from System agent

        * @return void

        */

        void StartListening();

        /**

        * From CActive. Handle asyncronous event response

        * @return void

        */

        void RunL();

        /**

        * From CActive. Handle Cancel call

        * @return void

        */

        void DoCancel();

    private:    // Data

        // SIM status property

        RProperty       iProperty;

        // Pointer to ReaderIF owning this observer. Not owned.

        CSwimReaderIF*  iReaderIF;

    };

#endif      // CSWIMSYSAGENTOBSERVER_H

// End of File