/*

* Copyright (c) 2010 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: Declaration of location requestor class.

*

*/

#ifndef POSINDICATORLOCATIONREQUESTOR_H

#define POSINDICATORLOCATIONREQUESTOR_H

#include <lbs.h>

#include <lbssatellite.h>

#include <EPos_CPosLandmark.h>

#include "posreversegeocodeinterface.h"

class CPosIndicatorLocationRequestor : public CActive,

                                       public MPosReverseGeocodeObserver

    {

    /**

     * This defines the different states of location requestor

     */

    enum TOperation

        {

        /**

         * Idle state

         */

        ENone,

        /**

         * Acquiring last known position

         */

        ELastKnownPosition,

        /**

         * During acquiring location

         */

        ECurrentPosition,

        /**

         * During acquiring address.

         */

        ECurrentAddress

        };

public: 

    /**

     * Factory function that instantiates an object 

     * of CPosIndicatorLocationRequestor

     */

    static CPosIndicatorLocationRequestor* NewL();

    /**

     * Destructor

     */

    ~CPosIndicatorLocationRequestor();

    /**

     * Gets current position

     */

    void GetCurrentPosition( const RMessage2& aMessage );

    /**

     * Gets current address info size.

     */

    void GetCurrentAddressInfoSizeL( const RMessage2& aMessage );

    /**

     * Gets current address info.

     */

    void GetCurrentAddressInfoL( const RMessage2& aMessage );

    /**

     * Cancels outstanding request 

     */

    void CancelRequest( const RMessage2& aMessage );

public: // From MPosReverseGeocodeObserver

    virtual void ReverseGeocodeComplete( TInt aErrorcode );

protected: // From CActive

    void RunL();

    void DoCancel();

private:

    /**

     * Default constructor.

     */

    CPosIndicatorLocationRequestor();

    /**

     * 2nd phase constructor for instantiating member variables     

     */

    void ConstructL();

private: // Data members

    /**

     * Queue of position request

     */

    RArray<RMessage2>   iPositionRequestQueue;

    /**

     * Queue of address request

     */

    RArray<RMessage2>   iAddressRequestQueue;

    /**

     * Handle to the location server interface

     */

    RPositionServer     iPosServer;

    /**

     * Handle to create a subsession with the location sever

     */

    RPositioner         iPositioner;

    /**

     * Pointer to reverse geo-coding plugin object

     * Own

     */

    CPosReverseGeocodeInterface* iReverseGeoCodeInterface;

    /**

     * Pointer to landmark object

     * Own

     */

    CPosLandmark* iLandmark;

    /**

     * Pointer to landmarks package.

     * Own 

     */

    HBufC8* iLandmarkPackage;

    /**

     * Last known position 

     */

    TPositionInfo iLastKnownInfo;

    /**

     * Requested satellite info.

     */

    TPositionSatelliteInfo     iPositionInfo;

    /**

     * Current operation that is progress.

     */

    TOperation          iOperation;

    };

#endif /* POSINDICATORLOCATIONREQUESTOR_H */