/*

* Copyright (c) 2006 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:  NPP PSY position requester header file

*

*/

#ifndef NPPPSYREQUESTER_H

#define NPPPSYREQUESTER_H

//  INCLUDES

#include <e32base.h>

// FORWARD DECLARATIONS

class CNppPsyPositioner;

class CPositioner;

class CNppPsySingletonHandler;

// CLASS DECLARATION

/**

*  This class implements the position requester.

*  

*  Position requester is responsible for loading appropriate PSY vi ECom Plug-in 

*  and forward location request to the loaded PSY.

*

*  This class may owns an instance of CPositioner. 

*

*  @lib nlanpppsy.dll

*  @since 3.1

*/

class CNppPsyRequester : public CActive

    {

    public:  // Constructors and destructor

        /**

        * Two - phased constructor.

        * @param aPositioner Reference to CNppPsyPositioner

        */

        static CNppPsyRequester* NewL( CNppPsyPositioner& aPositioner );

        /**

        * Destructor.

        */

        ~CNppPsyRequester();

    public:

        /**

        * Notify position update

        * @param aPosInfo Reference to TPositionerInfoBase, used to store

        *                 fix information.

        * @param aSTatus  Reference to TRequestStatus, used to complete location

        *                 request.

        * @since 3.1

        */

        void NotifyPositionUpdate  ( 

            TPositionInfoBase& aPosInfo,  

            TRequestStatus&    aStatus ); 

    private: // Functions from base classes

        /**

        * From CActive

        */

        void RunL(); 

        /**

        * From CActive

        */

        void DoCancel(); 

        /**

        * From CActive

        */

        TInt RunError( TInt aErr ); 

    private:

        /**

        * C++default constructor.

        */

        CNppPsyRequester( CNppPsyPositioner& aPositioner );

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

        /**

        * Make location request to the first PSY 

        */

        void MakeLocationRequest();

        /**

        * Complete location request

        */

        void CompleteRequest( TInt aErr );

    private:    // Data

        // Reference to NPP PSY Positioner

        CNppPsyPositioner& iNppPsyPositioner;

        // Singleton handler

        CNppPsySingletonHandler* iSingletonHandler;

        // Pointer to position info

        TPositionInfoBase* iPositionInfo;

        // Request status

        TRequestStatus* iRequestStatus;

        //PSY list

        RArray < TUid > iPsyList;

        // Current loaded positioner

        CPositioner* iPositioner;

    };

#endif      // NPPPSYREQUESTER_H   

// End of File