/*

* Copyright (c) 2005-2009 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:

* Name        : sipregeventobserver.h

* Part of     : SIP Profile Agent

* implementation

* Version     : 1.0

*

*/

/**

 @internalComponent

*/

#ifndef MSIPREGEVENTOBSERVER_H

#define MSIPREGEVENTOBSERVER_H

#include <e32std.h>

// FORWARD DECLARATIONS

// CLASS DECLARATION

/**

* This call back is used for notifying when 

* - network has updated the expiration time for the registration

* - network has de-registered the user.

*

*  @lib n/a

*/

class MSIPRegEventObserver

	{

    public: // New functions

		/**

		* Subscription to the registration state event was successful.

		* 2XX response has been received to the initial SUBSCRIBE and

		* the first full req-event information has been received in NOTIFY.

		*/     

		virtual void RegEventSubscriptionActive() = 0;

		/**

		* A network initiated re-registration event has been received.

		* The implementation must call CSIPRefresh::SetIntervalL

		* with the value of aExpirationTime.

		*

		* @param aExpirationTime the new expiration time for the registration       

		*/    

        virtual void ExpirationTimeUpdatedL(TInt aExpirationTime) = 0;

		/**

		* A new initial registration must be performed without de-registration.

		*/     

		virtual void ReRegister() = 0;    

		/**

		* A network initiated de-registration event has been received.

		* The network has deactivated the registration and 

		* a new initial registration must be performed.

		*/     

		virtual void RegistrationDeactivated() = 0;		

		/**

		* A network initiated de-registration event has been received.

		* The implementation must indicate the registration state as failed 

		* and delete the related CSIPRegistrationBinding and 

		* CSIPReqEventHandler immediately without an explicit deregister. 

		*/     

		virtual void RegistrationTerminated() = 0;

		/**

		* Subscription to the registration state event has failed and 

		* there is no way to recover. 

		* The implementation must send an explicit deregister request 

		* to the network and then indicate the registration state 

		* as failed and delete the related CSIPRegistrationBinding 

		* and CSIPReqEventHandler.

		*/     

		virtual void RegEventSubscriptionFailedL() = 0;								

	};

#endif