/*

* 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 the observer of CMgService class

*

*/

#ifndef MGSERVICEOBSERVER_H

#define MGSERVICEOBSERVER_H

#include "mgservice.hrh"

#include "mgoperationobserver.h"

class CLiwGenericParamList;

class MCLFItemListModel;

// CLASS DECLARATION

/**

*  Service Observer is for observing operation events of the MG service class.

*  CMgServiceObserver gets notified when asynchronous operations

*  are completed. 

* 

*  

*  @since  Series60 v3.2

*/

NONSHARABLE_CLASS( CMgServiceObserver ): public CBase, public MMgOperationObserver

    {

    public: 

    	/**

        * Returns the instance of CMgServiceObserver.

        * @since  Series60 v3.2

        * @param void

        * @return void

        */	

  		static CMgServiceObserver* NewL();

  		/**

        * Destructor.

        */

        virtual ~CMgServiceObserver();

        /**

        * Abstract method to get CMgService class events. This method is

        * called when an event is received.

        * @since  Series60 v3.2

        * @param aListModel ClF Iterator contains the required result 

        * @param aOperationEvent specifies the asynchronous event

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

        *        succeed.

        */

        virtual void MgNotifyL(TUint  aTransactionID, 

                               MCLFItemListModel* aListModel,

        					   TMgOperationEvent& aOperationEvent , 

                               const TInt& aError );

        /**

        * method to set callback of consumer and pointer to 

        * input/output parameter list.

        * @since  Series60 v3.2

        * @param  iCmdId  It represents whether the command if of request (FileInfo/File)

        * @param  iInput  sent by the consumer at the time of request	

        * @param  iOutput Result of given command will be 

        *				  stored in given output parameter list

        * @param  aCallback Contains the call back for Asynchronous request	

        */

        void SetMemberVar( const TMgCmdId& aCmdId,

        				   const CLiwGenericParamList* aInput,

        				   MLiwNotifyCallback* aCallBack );

          /**

        * Cancel the pending asynchronous request

        * @since  Series60 v3.2

        * @param  void

        * @return void

        */

        void CancelL();				   

    private :

         /**

        * Constructor.

        */

        CMgServiceObserver();

        /**

        * Two-phased constructor

        * @since  Series60 v3.2

        * @param  void

        * @return void

        */

        void ConstructL();

     private:

        /**

     	* Store the instance of the callback of the Client

     	*/

  		MLiwNotifyCallback* 			iCallBack;

  		/**

     	* stores the pointer of aOutParamList 

     	*/

    	CLiwGenericParamList* 			iOutput; 

    	/**

     	* stores the pointer of aInParamList 

     	*/

    	const CLiwGenericParamList* 	iInput;

    	/**

     	* command ID of ongoing request (Files/FilesInfo)

     	*/

    	TMgCmdId 						iCmdId;

	};

#endif MGSERVICEOBSERVER_H