/*

* Copyright (c) 2004-2007 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:  

*

*/

#ifndef MIDLEPRINTEVENTOBSERVER_H

#define MIDLEPRINTEVENTOBSERVER_H

#include <e32def.h>

#include <e32std.h>

enum TImgPrintUSBState

	{

	EUSBUndefined = 0,

	EUSBConnected,

    ENOUSBEvent

	};

//  CLASS DEFINITION

/**

 *

 * Interface to notify UI about idle state events

 *

 */

class MIdlePrintEventObserver

    {	

	public:		// Abstract methods

       /**

        *  Called when usb printer is disconnected

        */

        virtual void UsbPrinterDisconnected() = 0;           

	   /**

        *  Called when usb printer is connected

        */

        virtual void UsbPrinterConnected() = 0;

		/**

		* Notifies about USB state changes. Method is also used for other events

        * @param aState information about usb state

		*/ 

		virtual void UsbStateChanged( TImgPrintUSBState aState, TInt aError ) = 0;

		virtual void ReadyToContinue() = 0;

		/**

		 * Notifies that there's happened an asynchronous leave in server process,

		 * which in practice means that any ongoing printing should be cancelled

		 *

		 * @param aError leave code

		 */

		virtual void AsynchronousServerLeave( TInt aError ) = 0;

    };

#endif // MIDLEPRINTEVENTOBSERVER_H

//  End of File