/*

* 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:  Monitors USB events

*

*/

#ifndef CMPXUSBEVENTHANDLER_H

#define CMPXUSBEVENTHANDLER_H

#include <usbman.h>

#include <mpxpskeyobserver.h>

#include "mpxsystemeventobserver.h"

class CMPXPSKeyWatcher;

/**

 *  USB Monitoring class

 *

 *  @lib mpxharvesterserver.exe

 *  @since S60 3.0

 */

NONSHARABLE_CLASS( CMPXUsbEventHandler ) : public CActive,

                                           public MMPXPSKeyObserver

    {

public:

    /**

    * Two-phase constructor

    * @param aObserver observer to the event handler

    */

    static CMPXUsbEventHandler* NewL( MMPXSystemEventObserver& aObserver );

    /**

    * Two-phase constructor

    * @param aObserver observer to the event handler

    */

    static CMPXUsbEventHandler* NewLC( MMPXSystemEventObserver& aObserver );

    /**

    * Virtual destructor

    */

    virtual ~CMPXUsbEventHandler();

public:

    /**

    * Polls for the current monitor status

    * If an event is happening, it will callback the observer of the event

    */

    void PollStatus();

protected: // From Base Class

    /**

    * From CActive

    */

    void RunL();

    void DoCancel();

    /**

    * From MMPXPSKeyObserver

    */

    void HandlePSEvent( TUid aUid, TInt aKey );

private: // New Methods

    /**

    * Handle the PS Key event

    * @param aUid UID of the key

    * @param aKey ID of the key

    */

    void DoHandlePSEventL( TUid aUid, TInt aKey );

    /**

     * Connect to usbman.

     * If error, default iDeviceState to EUsbDeviceStateConfigured so this would not

     * block usb event mode change.

     */

    void ConnectUsbMan();

private:

    /**

    *  C++ constructor

    */

    CMPXUsbEventHandler( MMPXSystemEventObserver& aObserver );

    /*

    * Second phased constructor

    */

    void ConstructL();

private: // data

    CMPXPSKeyWatcher*  iPSKeyWatcher;  // PS key watcher for USB PS key

    CMPXPSKeyWatcher*  iMTPKeyWatcher; // PS key watcher for MTP PS key

    TBool              iWasMtp;        // Was the operation Mass Storage or MTP

    /*

    * Observer interface to callback to an observer

    */

    MMPXSystemEventObserver& iObserver;

    TInt iState;

    RUsb            iUsbMan;

    TUsbDeviceState iDeviceState;

    TBool           iUsbManConnected;

    };

#endif // CMPXUSBEVENTHANDLER_H