/*

* 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 "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: Ecom Event watcher..Notifies when plugin uninstalled

*

*/

#ifndef __CSuplEComEventWatcher_H__

#define __CSuplEComEventWatcher_H__

#include "epos_msuplecomeventobserver.h"

#include <e32base.h>

#include <ecom/ecom.h>

// CLASS DECLARATION

/**

*  Class to listen for Ecom events

*/

class CSuplEcomEventWatcher : public CActive

	{

	public: // enum

		typedef enum

			{

			EExist,

			ENotExist

			} TSuplEcomPlugInStatus;

	public:

	    /**

        * Two-phased constructor.

        * @param aSuplEcomEventObserver is the reference of observer(CSuplServer).

        */

        static CSuplEcomEventWatcher* NewL(MSuplEcomEventObserver& aSuplEcomEventObserver, TUid aInterfaceUid, TUid aImplId);

        /**

        * Destructor.

        */        

		virtual ~CSuplEcomEventWatcher();

		void NotifyOnPlugInUnInstallation();

	protected:  // From CActive

		void RunL();                

        TInt RunError(TInt aError);               

        void DoCancel();

	private:

	    /**

        * Constructor.

        */

		CSuplEcomEventWatcher(MSuplEcomEventObserver& aSuplEcomEventObserver, TUid aInterfaceUid, TUid aImplId);

		/**

        * ConstructL.

        */

		void	ConstructL();

		/**

        * The following method returns version of plug-in.

        * @param None.

        */        

		TBool	IsImplementationExistL();

	private:

		/**

        * Reference to CSuplServer.

        */        

	    MSuplEcomEventObserver& 	iSuplEcomEventObserver;

	    /**

        * Address of REComSession.

        */        

	    REComSession* 				iEComSession;

	    /**

	    * Interface Id of respective Plug-In

	    */	    

	    TUid                        iPlugInInterfaceUid;

	    /**

        * Implementation Id of respective Plug-In

        */        

	    TUid 						iPlugInImplUid;

	    /**

        * Current status of this plug-in whether plug-in exists or not.

        */ 

	    TSuplEcomPlugInStatus       iSuplEcomPlugInStatus;  

	};

#endif //__CSuplEComEventWatcher_H__