/*

* Copyright (c) 2008-2009 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:  Personality switch function.

 *

*/

#ifndef C_USBPERSONALITYSWITCH_H

#define C_USBPERSONALITYSWITCH_H

#include <e32base.h>

#include <d32usbdi.h> 

const TInt KGetAllPersonalitiesReq = 0x82;

const TInt KSetPersonalityReq = 0x89;

const TInt KNumOfPersShift = 3;

const TInt KCurrPersShift = 2;

const TInt KFirstPersonalityIdShift = 4;

const TInt KLenghtOfPersonalityData = 2;

class MUsbPersonalitySwitchObserver

    {

public:

    enum TState

        {

        EIdle = 0,

        ERequestingAllPersonalities,

        ERequestingSetPersonality,

        EGetAllPersonalitiesCompleted,

        ESetPersonalityCompleted,

        ERequestCancelled,

        ERequestFailed

        };

public:

    virtual void UsbPersonalitySwitchStateChangedL(TState aState, TInt aData) = 0;

    };

/* *

 * Reads personalities, if possible, switches peripheral to mass storage.

 * It is assumed that USB is started already

 */

NONSHARABLE_CLASS(CUsbPersonalitySwitch) : public CActive

    {

    enum TState

    {

    EIdle = 0,

    EGetAllPersonalities,

    ESetPersonality /*,

    EGetAllPersResult,

    EGetSetPersResult*/

    };

public:

    /**

     * Two-phased constructor

     *

     * @param aObserver will get call back

     * @param aTimerId timer id

     */

    static CUsbPersonalitySwitch * NewL(MUsbPersonalitySwitchObserver* aObserver);

    /**

     * Destructor.

     */

    virtual ~CUsbPersonalitySwitch();

    /**

     * calls RunL after aMilliseconds

     * @param aMilliseconds time in millisecs

     */

    TInt SwitchPersonalityL(TUint32 aDeviceId, TInt aPersonalityToBeSet);

    void CancelSwitchPersonalityL();

public:

    // from base class CActive

    /**

     * Called when request is completed

     */

    void RunL();

    /**

     * called when RunL leaves

     * @param aError error code

     * @return error code

     */

    TInt RunError(TInt aError);

    /**

     * Called when request is cancelled

     */

    void DoCancel();

private:

    /**

     * Default constructor

     * @param aObserver will get call back

     * @param aTimerId timer id 

     */

    CUsbPersonalitySwitch(MUsbPersonalitySwitchObserver* aObserver);

    /**

     * 2nd phase construction

     */

    void ConstructL();

    void Reset();

private:

    // data

    /**

     * Observer

     * not own

     */

    MUsbPersonalitySwitchObserver* iObserver;

    RUsbInterface iUsbInterface;

    /**

     * timer id

     */

    TInt iPersonalityToBeSet;

    RUsbInterface::TUsbTransferRequestDetails iTransfer;

    RBuf8 iSendData;

    RBuf8 iRcvData;

    TState iState;

    };

#endif //  C_USBPERSONALITYSWITCH_H