/*

* Copyright (c) 2005 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:  Interface for content processors

*

*/

#ifndef __MCACONTENTPROCESSOR_H__

#define __MCACONTENTPROCESSOR_H__

//	FORWARD CLASS DECLERATIONS

class MCAMessage;

// CLASS DECLARATION

/**

 *  Interface for content processors

 *

 *  @lib CAEngine.dll

 *  @since 3.0

 */

class MCAContentProcessor

    {

    public: // Interface

        /**

         * Request processing of content.

         * @aMessage Message which to process.

         * @aProcessState. This is updated during processing.

         */

        virtual void RequestProcessingL( MCAMessage& aMessage ) = 0;

        /**

         * Start processing of content.

         * @aMessage Message which to process.

         * Leaves with KErrInuUse, if another item is processed at the moment.

         */

        virtual void StartProcessingL( MCAMessage& aMessage ) = 0;

        /**

         * Request cancelling of processing.

         * @aMessage To identify which message asks canceling

         */

        virtual void CancelProcessing( MCAMessage& aMessage ) = 0;

        /**

         * Request processing remove. If processing is already started. Cancels processing.

         * @aMessage To identify which message asks canceling

         */

        virtual void RemoveProcessingL( MCAMessage& aMessage ) = 0;

    protected: // For protection.

        /**

         * Destructor

         */

        virtual ~MCAContentProcessor() {}

    };

#endif      // __MCACONTENTPROCESSOR_H__

// End of File