/*

* 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:  Wrapper for Back Stepping Service

*

*/

#ifndef CIRBACKSTEPPINGSERVICEWRAPPER_H

#define CIRBACKSTEPPINGSERVICEWRAPPER_H

#include <e32base.h>

#include <vwsdef.h>

class MLiwInterface;

class CLiwGenericParamList;

class CLiwServiceHandler;

/**

 *  Back Stepping (BS) Service wrapper for Internet Radio.

 */

class CIRBackSteppingServiceWrapper : public CBase

    {

public:

    /**

     * Static constructor.

     *

     * @param aUid Application UID.

     */

    static CIRBackSteppingServiceWrapper* NewL( TUid aUid );

    /**

     * Destructor.

     */

     ~CIRBackSteppingServiceWrapper();

    /**

     * Forwards view activation event to BS Service.

     *

     * @param   aViewId View id of the view where back is called.

     * @param   aEnter Indicates if it is entry or exit activation.

     */

    void HandleViewActivationEventL( const TVwsViewId aViewId, TBool aEnter );

    /**

     * Forwards back command to BS Service.

     *

     * @param   aViewId View id of the view where back is called.

     * @return  Returns Etrue if BS Service consumed the command, otherwise returns EFalse.

     */

    TBool HandleBackCommandL( const TVwsViewId aViewId );

private:

    /**

     * C++ default constructor.

     */

    CIRBackSteppingServiceWrapper();

    /**

     * 2nd phase constructor

     *

     * @param aUid Application UID.

     */

    void ConstructL( TUid aUid );

    /**

     * Initializes BS Service.

     *

     * @param aUid Application UID.

     */

    void InitializeL( TUid aUid );

    /**

     * Handles the result of a LIW command

     *

     * @return Returns ETrue if LIW command executed, otherwise returns EFalse.

     */

    TBool HandleResultL();

private: // data

    /**

     * AIW Service Handler.

     * Own.

     */

    CLiwServiceHandler* iServiceHandler;

    /**

     * BS Service interface returned by LIW.

     * Own.

     */

    MLiwInterface* iBsInterface;

    /**

     * In param list.

     * Not own.

     */

    CLiwGenericParamList* iInParamList;

    /**

     * Out param list.

     * Not own.

     */

    CLiwGenericParamList* iOutParamList;

    };

#endif // CIRBACKSTEPPINGSERVICEWRAPPER_H