/*

* Copyright (c) 2007 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:  MTCStatePool interface declaration.

*

*/

#ifndef TCTRANSACTIONHANDLER_H

#define TCTRANSACTIONHANDLER_H

// INCLUDES

#include <e32std.h>

#include <sensrvtypes.h>

#include "tctransaction.h"

// FORWARD DECLARATIONS

// CLASS DECLARATION

/**

*  Transaction handler. States can utilize transaction

*  handler to execute specific actions.

*  All transactions are asynchronous.

*

*  Transaction handler also provides needed data model for

*  state classes.

*

*  @lib None

*  @since S60 5.0

*/

NONSHARABLE_CLASS( MTCTransactionHandler )

    {

    public:

        /**

        * Process a transaction.

        *

        * @param aId Transaction ID.

        * @param aTransaction Transaction object.

        */

        virtual void ProcessTransactionL( TTCTransactionId aId,

            TTCTransaction* aTransaction = NULL ) = 0;

        /**

        * Checks if new transaction can be sent.

        *

        * @return ETrue if there is existing transaction being processed.

        */

        //virtual TBool ReadyForTransaction() const = 0;

        /**

        * Access to data buffer.

        * Fill the channel data into this buffer.

        *

        * @return TUint8*

        */

        virtual TUint8* DataBuffer() const = 0;

        /**

        * Access to data item count.

        * How many channel data items are requested.

        *

        * @return TInt

        */

        virtual TInt DataCount() const = 0;

        /**

        * Access to current channel properties.

        * 

        * @return const RSensrvPropertyList&

        */

        virtual const RSensrvPropertyList& Properties() const = 0;

};

#endif // TCTRANSACTIONHANDLER_H

// End of File