/*

* Copyright (c) 2005-2006 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:  CSysInfoObserver class for handling async requests

*

*/

#ifndef __SYSINFOOBSERVER_H__

#define __SYSINFOOBSERVER_H__

#include <e32base.h>

#include "sysinfoservice.h"

#include "sysrequest.h"

//FORWARD DECLARATION

class CLiwGenericParamList;

class CSysInfoInterface;

/**

* CSysInfoObserver

* This class acts as an observer for all asynchronous requests. After the request

* is completed, it checks for error and packs it in output param list. If there

* is no error, then the iterator is also packed into the output param list.

*/

// CLASS DECLARATION

NONSHARABLE_CLASS(CSysInfoObserver): public CBase, public ISystemObserver

    {

    public: // New methods

    /**

    * NewL.

    * Two-phased constructor.

    * Create a CSysInfoObserver object.

    * @param aLmIface The CSysInfoInterface instance.

    * @return A pointer to the newly created instance of CSysInfoObserver.

    */

    static CSysInfoObserver* NewL( CSysInfoInterface* aSysInfoIf );

    /**

    * ~CSysInfoObserver

    * Destructor.

    */

    ~CSysInfoObserver() {}

    public:// from ISystemObserver

    /**

    * HandleResponseL ()

    * Delegates asycn response to client by calling 

    * MLiwNotifyCallback::HandleNotifyL().

    */		

    void HandleResponseL(const TDesC& aEntity,const TDesC& aKey, 

                            CSysData* aOutput, TInt32 aTransID, 

                            TSysRequest::TRequestType aType, TInt aError);

    private: // Constructors

    /**

    * CSysInfoObserver.

    * C++ default constructor.

    * @param aSysInfoIf The CSysInfoInterface instance.

    */

    CSysInfoObserver( CSysInfoInterface* aSysInfoIf );

    private: //Data        

    /**

    * iSysInfoIf

    * Handle to CSysInfoInterface instance.

    */

    CSysInfoInterface* iSysInfoIf;

    };

#endif // __SYSINFOOBSERVER_H__

// End of File