/*

* Copyright (c) 2005 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:  Publish & Subscribe property change observer

*

*/

#ifndef IMPSTOFFOBSERVER_H

#define IMPSTOFFOBSERVER_H

#include <e32base.h>

#include <e32property.h>

#include "impspropertyobserverapi.h"

// FORWARD DECLARATIONS

class CImpsServer;

class CImpsPropertyObserver;

/**

* CImpsTOffObserver

* Observer for terminal off line state events

*/

class CImpsTOffObserver: public CBase, public MImpsPropertyObserver

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        * @param aServer WV engine core

        */

        static CImpsTOffObserver* NewL(

            CImpsServer& aServer );

        /**

        * Destructor.

        */

        virtual ~CImpsTOffObserver();

        /**

        * Is the GPRS Connection allowed

        * @return ETrue if not in a flight mode

        */

        TBool CheckConnAllowed();

    public: // from derived classes

        /**

        * This is a callback function which is called when a notify event

        * completes. User must derive his class from MImpsPropertyObserver

        * and implement this method if he is to use notify services.

        *

        * @param aValue     the new value involved with the keyword

        */

        void HandlePropertyChangeL( TInt aValue );

    private:

        /**

        * By default constructor is private.

        */

        void ConstructL();

        /**

        * C++ default constructor.

        * @param aServer WV engine core

        */

        CImpsTOffObserver( CImpsServer& aServer );

        // By default, prohibit copy constructor

        CImpsTOffObserver( const CImpsTOffObserver& );

        // Prohibit assigment operator

        CImpsTOffObserver& operator= ( const CImpsTOffObserver& );

    private: //data

        CImpsServer&            iServer;

        CImpsPropertyObserver*  iObserver;

    };

#endif      // IMPSTOFFOBSERVER_H  

// End of File