/*

* Copyright (c) 2004-2009 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        : CStateModel.h

* Part of     : NetworkMonitor

* See class definition below.

* Version     : SIP/4.0

*

*/

/**

 @internalComponent

*/

#ifndef __CSTATEMODEL_H__

#define __CSTATEMODEL_H__

// INCLUDES

#include <e32base.h>

#include "MStateModel.h"

// FORWARD DECLARATIONS

class MSIPConnectionContext;

class MTimerManager;

class TStateBase;

// CLASS DEFINITION

/**

 * CStateModel implements a state model for CSipConnection

 */

class CStateModel

	: public CBase,

	  public MStateModel

	{

	public:	// Constructors and destructor

		/**

		 * Static constructor.

		 *

		 * @param aContext Reference to SIP Connection Context (~CSipConnection)

		 * @param aTimer Reference to the global timer manager.

		 * @return An initialized instance of this class.

		 */

		static CStateModel* NewL( MSIPConnectionContext& aContext,

								  MTimerManager& aTimer );

		/// Destructor

		~CStateModel();

	public: // From MStateModel

		void SendL( const TSIPTransportParams& aParams,

		            CSIPRequest& aRequest,

		            TBool aForceUDP,

		            const CUri8* aOutboundProxy,

					const TInetAddr& aRemoteAddr,

					TRequestStatus& aStatus );

 		void SendL( const TSIPTransportParams& aParams,

 		            CSIPResponse& aResponse,

                    TTransactionId aId,

					TRequestStatus& aStatus );

		MStateModel::TState StateValue() const;

		void EnterState( MStateModel::TState aState, TInt aError );

		TInt Error() const;

	public: // From MSIPNetworkObserver

		void NetworkStateChanged( MSIPNetworkObserver::TNetworkState aState,

								  TInt aError );

	private: // New methods

		/// @return Reference to the active state instance.

	private: // Constructors

		/// Default constructor. Not implemented.

		CStateModel();

		/**

		 * Constructor.

		 *

		 * @param aContext Reference to SIP Connection Context (~CSipConnection)

		 * @param aTimer Reference to the global timer manager.

		 */

		CStateModel( MSIPConnectionContext& aContext,

					 MTimerManager& aTimer );

		/// 2nd phase constructor

		void ConstructL();

	private: // Data

		/// Reference to SIP Connection Context (~CSipConnection)

		MSIPConnectionContext& iContext;

		/// Reference to the global timer manager.

		MTimerManager& iTimer;

		/// State instances. Owned.

		CArrayVarFlat< TStateBase > iStates;

		/// Current state as enumeration value

		MStateModel::TState iStateValue;

		/// Stores connection error

		TInt iError;

	private: //For testing purposes

#ifdef CPPUNIT_TEST	

		friend class CStateModel_test;

#endif

	};

#endif // __CSTATEMODEL_H__