/*

* Copyright (c) 2002-2004 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:  Object Negotiators.

*

*/

#ifndef MPHSRVEMERGENCYNEGOTIATORS_H

#define MPHSRVEMERGENCYNEGOTIATORS_H

// INCLUDES

#include <e32base.h>

// FORWARD DECLARATIONS

class MPhSrvEmergencyCall;

class CPhSrvSubSessionBase;

// CLASS DECLARATION

/**

*  Base class for call negotiators.

*

*  @since 1.0

*/

class MPhSrvEmergencyCallBase

    {

    public: // New functions

        /**

        * Makes an dial request.

        *

        * @param aMessage Message to be negotiated.

        * @param aArgs Call arguments.

        * @param aSubSession Subsession for dial.

        */

        virtual void EmergencyDialL( 

           const RMessage2& aMessage) = 0;

        /**

        * Cancel's an oustanding dial request. If the specified subsession 

        * doesn't have an oustanding dial request, then the subsession is 

        * panicked.

        *

        * @param aSubSession Subsession that has the dial request.

        */

        virtual void EmergencyDialCancel() = 0;

    };

/**

*  Abstract call negotiators class.

*

*  @since 1.0

*/

class MPhSrvEmergencyNegotiatorCall : public MPhSrvEmergencyCallBase

    {

    public: // New functions

        /**

        * Called by the call notifier subsession when it's ready to negotiate

        * (make another call) with the external call interface.

        *

        * @param aInitiator Call initiator instance.

        */

        virtual void SetNegotiatorReadyCall( 

            MPhSrvEmergencyCall& aInitiator ) = 0;

        /**

        * Called by the call notifier subsession when it isn't going to be

        * available to make further calls (session has closed)

        *

        * @param aInitiator Call initiator instance.

        */

        virtual void SetNegotiatorReadyCallCancel( 

            MPhSrvEmergencyCall& aInitiator ) = 0;

        /**

        * Called by the call notifier subsession when it's attempted to make a

        * call - the call negotiator can then inform the external call 

        * interface of the result.

        *

        * @param aResult Result of the call attempt.

        */

        virtual void SetNegotiatorAttemptedCallResponseValue( 

            TPhCltPhoneResults aResult ) = 0;

    };

#endif // MPHSRVEMERGENCYNEGOTIATORS_H

// End of File