/*

* 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        : sipdialogearly.h

* Part of     : SIPAPI

* Interface   : 

* Version     :

*

*/

/**

 @internalComponent

*/

#ifndef CDIALOGEARLY_H

#define CDIALOGEARLY_H

// INCLUDES

#include "sipdialogstate.h"

// FORWARD DECLARATIONS

// CLASS DECLARATION

class CDialogEarly : public CDialogState

	{

public: // Constructors and destructor

    static CDialogEarly* NewL();

	~CDialogEarly();

public: // From CDialogState

    CSIPDialog::TState State() const;

    //Possible events in this state    

    //INVITE can not be sent in Early state

    CSIPClientTransaction*

        SendSubscribeL(const CSIPDialogImplementation& aDialog,

                       CSIPSubscribeDialogAssoc& aAssoc,

                       CSIPMessageElements* aElements,

                       CSIPRefresh* aRefresh) const;

    CSIPClientTransaction*

        SendNonTargetRefreshRequestL(const CSIPDialogImplementation& aDialog,

                                     CSIPDialogAssocImplementation& aAssoc,

                                     RStringF aMethod,

                                     CSIPMessageElements* aElements) const;    

    void SendResponseL(CSIPDialogImplementation& aDialog,

                       const CSIPResponseElements& aElements,

					   TUint32 aRequestId,

                       TBool aAffectsDialogState,

                       TBool aTargetRefresh) const;

    CSIPClientTransaction* SendPrackL(CSIPInviteDialogAssoc& aAssoc,

                                      CSIPMessageElements* aElements) const;

    CSIPClientTransaction* SendUpdateL(CSIPInviteDialogAssoc& aAssoc,

                                       CSIPMessageElements* aElements) const;

    CSIPClientTransaction* SendByeL(CSIPInviteDialogAssoc& aAssoc,

                                    CSIPMessageElements* aElements) const;

    TBool IncomingResponseL(CSIPDialogImplementation& aDialog,

                            CSIPResponseElements* aElements,

		                    TUint32 aRequestId,

                            TUint32 aDialogId,

                            CConnectionCallback& aCallback) const;

    TBool IncomingResponseL(CSIPDialogImplementation& aDialog,

                            CSIPResponseElements* aElements,

		                    TUint32 aRequestId,

                            TUint32 aRefreshId,

                            TUint32 aDialogId,

                            CConnectionCallback& aCallback) const;

    TBool IncomingRequestL(CSIPDialogImplementation& aDialog,

                           CSIPServerTransaction* aTransaction,

                           CConnectionCallback& aCallback) const;                          

    TBool ErrorOccured(CSIPDialogImplementation& aDialog,

                       TInt aError,

                       TUint32 aRequestId,

                       CConnectionCallback& aCallback) const;

	TBool ErrorOccured(CSIPDialogImplementation& aDialog,

                       TInt aError,

                       TUint32 aRefreshId,

                       TUint32 aRequestId,

                       CConnectionCallback& aCallback) const;

    void ConnectionLost(CSIPDialogImplementation& aDialog) const;

public: // New functions

	void SetNeighbourStates(CDialogState& aConfirmed,

                            CDialogState& aTerminated);

private: // Constructor

	CDialogEarly();

private: // Data

    //States which can be reached from Early state

    CDialogState* iConfirmed;

    CDialogState* iTerminated;

	};

#endif