/*

* Copyright (c) 2007-2007 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:  This Class is observer for the CLF framework

*

*/

#ifndef __MGCLFOPERATIONOBSERVER_H

#define __MGCLFOPERATIONOBSERVER_H

#include <MCLFOperationObserver.h>

#include <e32base.h>

class MCLFItemListModel;

class MMgOperationObserver;

class CMgService;

class CAsynchRequestManager;

class CPostFilter;

class MCLFSortingStyle;

// CLASS DECLARATION

/**

*  CClfOperationObserver class is for observing operation events of CLF

*  Client application gets notified when asynchronous operations

*  are completed.

*

*  @since  Series60 v3.2

*/

NONSHARABLE_CLASS( CClfOperationObserver ) : public CBase, public MCLFOperationObserver

    {

    public:

		/**

 		* Two-phased constructor

        * @since  Series60 v3.2

        * @param  void

        * @return CClfOperationObserver*  Returns the instance of

        *								  CClfOperationObserver.

        */

  		static CClfOperationObserver* NewL();

        /**

        * method to get CLF Framework events. This method is

        * called when an event is received.

        * @param aOperationEvent Operation event code of the event

        * @param aError System wide error code if the operation did not

        *        succeed.

        */

        virtual void HandleOperationEventL( TCLFOperationEvent aOperationEvent,

                                            TInt aError );

      	/**

        * Destructor.

        */

        virtual ~CClfOperationObserver();

       	/**

        * constructor

        * @since  Series60 v3.2

        * @param void

        * @return void

        */

        CClfOperationObserver();

        /**

        * method to set callback of service class(i.e ServiceObserver)

        * @since  Series60 v3.2

        * @param  aServiceObserver observer of the service class

        * @param  aListModel Iterator of clf which contains the required result

        * @param  aMGService Instance of service class

        */

        void SetMemberVar(TUint  aTransactionID,

                          MMgOperationObserver* aServiceObserver,

        				  MCLFItemListModel* aListModel,

        				  CMgService* aMGService,CAsynchRequestManager* aAsyncReqManager,

        				  CPostFilter* aFilter,MCLFSortingStyle* aSortingStyle);

        /**

        * Cancel the pending asynchronous request

        * @since  Series60 v3.2

        * @param  void

        * @return void

        */

        void CancelL();

   	private:

        /**

     	* Store the instance of the callback of service class

     	*/

  		MMgOperationObserver* iServiceObserver;

  		/**

     	* stores the instance of list model of CLF Framework.

     	*/

    	MCLFItemListModel* iListModel;

    	/**

     	* stores the instance of service class

     	*/

    	CMgService* iMGService;

    	/**

     	* stores the TransactionID

     	*/

    	TUint  iTransactionID;

    	/**

    	* stores AsyncRequestManager instance 

    	 */

    	CAsynchRequestManager* iAsyncRequestManager;

        /**

         * store the instance of CPostfilter which filters the result

         * as per the set filter criteria

         */

         CPostFilter* iFilter;

         /**

         * store the instance of sorting style which sorts the result

         * as per the set sort criteria

         */

         MCLFSortingStyle* iSortingStyle;

	};