// 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 CUSBOTG_H

#define CUSBOTG_H

class CUsbOtgEventWatcher;

class CRequestSessionWatcher;

class MUsbRequestSessionObserver

    {

public:

    virtual void BusRequestL() = 0;

    };

class ROtgStateChangeNotifier

    {

public:

    ROtgStateChangeNotifier();

    ~ROtgStateChangeNotifier();

	void Register(const RMessage2& aMessage);

    void DoNotifyL();

    void DoCancelL();

private:

	void CompleteNotifierL(TInt);

private:

    /** Notification service */

	RMessage2 iMessage;

    /** Flag to indicate that media change notification is active */

	TBool iRegistered;

    };

class CUsbOtg: public CBase,

               public MUsbRequestSessionObserver

    {

public:

    enum TOtgState {KOtgStateStart,

                    KOtgStateAPlugInserted,

                    KOtgStateSessionOpen,

                    KOtgStateSessionClose};

public:

	static CUsbOtg* NewL();

	~CUsbOtg();

protected:

	CUsbOtg();

	void ConstructL();

public:

    // MUsbRequestSessionObserver

    void BusRequestL();

    void HandleUsbOtgEvent(RUsbOtgDriver::TOtgEvent aEvent);

    TBool DeviceInserted();

    void NotifyChange(const RMessage2& aMessage);

    void NotifyChangeCancel();

    TInt BusDrop();

private:

    void StartL();

    void Stop();

private:

    TOtgState iOtgState;

	RUsbOtgDriver iUsbOtgDriver;

    CUsbOtgEventWatcher* iOtgEventWatcher;

    CRequestSessionWatcher* iRequestSessionWatcher;

    ROtgStateChangeNotifier iNotifier;

    };

#endif