/*

* Copyright (c) 1997-2009 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:

*

*/

#include <usbstates.h>

/**

 * The MUsbDeviceNotify class

 *

 * The mixin used by the USB Device object to notify all of

 * it's observers of any state changes that occur

  @publishedPartner

  @released

 */

class MUsbDeviceNotify

	{

public:

	/**

	 * Called when the USB service state has changed

	 *

	 * @param aLastError The last error code detected

	 * @param aOldState The previous service state

	 * @param aNewState The new service state

	 */

	virtual void UsbServiceStateChange(TInt aLastError, TUsbServiceState aOldState, TUsbServiceState aNewState) = 0;

	/**

	 * Called when the USB device state has changed

	 *

	 * @param aLastError The last error code detected

	 * @param aOldState The previous device state

	 * @param aNewState The new device state

	 */

	virtual void UsbDeviceStateChange(TInt aLastError, TUsbDeviceState aOldState, TUsbDeviceState aNewState) = 0;

	};