/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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: 

*

*/

#ifndef CUSBPNALT_H

#define CUSBPNALT_H

//  INCLUDES

#include <e32base.h>  // For CActive

// CONSTANTS

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

class MUsbPnAltObserver;

class RDevUsbcClient;

class RIscApi;

// CLASS DECLARATION

/**

*  Listens device state / alternate setting changes.

*/

class CUsbPnAlt : public CActive

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CUsbPnAlt* NewL( MUsbPnAltObserver& aAltObserver, RDevUsbcClient& aLdd, RIscApi& aIscApi );

        /**

        * Destructor.

        */

        ~CUsbPnAlt();

    public: // New functions

        //

        void ListenStateChange();

    protected:  // Functions from base classes

        /**

        * From CActive.

        */

        void DoCancel( );

        /**

        * From CActive.

        */

        void RunL( );

        /**

        * From CActive.

        */

        TInt RunError( TInt );

    private:

        /**

        * C++ default constructor.

        */

        CUsbPnAlt( MUsbPnAltObserver& aObserver, RDevUsbcClient& aLdd, RIscApi& aIscApi );

#ifndef NCP_COMMON_BRIDGE_FAMILY

        /**

        * Sends control message to ISA side media module SOS USB MM.

        * @param const TUint8 aId SubMessageId for control message

        */

        void SendControlMessage( const TUint8 aId ) const;

#endif /* NCP_COMMON_BRIDGE_FAMILY */

    private:    // Data

        // Observer instance

        MUsbPnAltObserver&      iAltObserver;

        // Reference to USB driver channel

        RDevUsbcClient&         iLdd;

        // Reference to ISCAPI handle

        RIscApi&                iIscApi;

        // Member for holding device state

        TUint                   iState;

    };

#endif      // CUSBPNALT_H

// End of File