/*

* Copyright (c) 2006 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:  Transfer state base class for different transfer states

*

*/

#ifndef SVPTRANSFERSTATEBASE_H

#define SVPTRANSFERSTATEBASE_H

#include <e32base.h>

class CSVPTransferStateContext;

/**

 *  Transfer state base class

 *

 *  @lib svp.dll

 *  @since S60 3.2

 */

class CSVPTransferStateBase : public CBase

    {

public: // Constructors and destructor

    /**

     * Destructor.

     */

    virtual ~CSVPTransferStateBase();

public: // New functions

    /**

     * Applies the current state. Called after the state transition.

     * Leaves on error.

     * @since S60 3.2

     * @param aContext SVP Transfer context

     */

    void ApplyL( CSVPTransferStateContext& aContext );

    /**

     * Called when the state is entered, before it is applied.

     *

     * @since S60 3.2

     * @param aContext SVP Transfer context

     */

    void Enter( CSVPTransferStateContext& aContext );

protected: // New functions

    /**

     * Applies the current concrete state. Leaves on error.

     * Implemented by the concrete states.

     *

     * @since S60 3.2

     * @param aContext SVP Transfer context

     */

    virtual void DoApplyL( CSVPTransferStateContext& aContext ) = 0;

    /**

     * Called when the state is entered. Implemented by the concrete states.

     *

     * @since S60 3.2

     * @param aContext SVP Transfer context

     */  

    virtual void DoEnter( CSVPTransferStateContext& aContext ) = 0;

    /**

    * C++ default constructor.

    */

    CSVPTransferStateBase();

    };

#endif // SVPTRANSFERSTATEBASE_H