/*

 * 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 the Positioning Methods private engine class

 *							used to get the list of available Psy & to manipulate 

 *							the state of the Psy by using the location framework apis.

 *							

 *

 */

#ifndef POSPSYSETTINGSENGINEPRIVATE_H

#define POSPSYSETTINGSENGINEPRIVATE_H

#include "pospsysettingscommon.h"

#include <qlist.h>

#include <qstring.h>

#include <EPos_MPosModulesObserver.h>

/**

 * The class defines the interface for receiving position

 * technology change event.The class interested in position

 * technology change should inherit from this class.

 */

class PositionTechnologyChangeObserver

    {

public:

    virtual void handlePositionTechnologyChange() = 0;

    };

// Forward declarations

class CPosModules;

class PosPsySettingsEngine;

class PosPsySettingsEnginePrivate : public MPosModulesObserver

    {

public:

    /**

     * Constructor

     */

    PosPsySettingsEnginePrivate( PositionTechnologyChangeObserver& 

            posTechChangeObserver);

    /**

     * Destructor

     */

    ~PosPsySettingsEnginePrivate();

    /**

     * This method lists all the PSY that are available

     * @param[out] psyList - Contains the list of psys that are available

     * @return - KErrNone - if successfully finds any Psy

     *           KErrNotFound - if no Psy available.

     */

    int listPsys( QList<PosPsyInfo>& psyList );

    /**

     * This method is used to change the state of the Psy based on the user's

     * action of either enabling/disabling the Psy.

     * @param[in] psyModuleId - the uid of the Psy whose state is to be changed.

     * @param[in] psyState - The value of state to which the Psy has to be changed.

     */

    int changePsyState( TUid psyModuleId, PosPsyState psyState );

public: // from MPosModulesObserver

    virtual void HandleSettingsChangeL( TPosModulesEvent aEvent );

private:

    /**

     * This method uses the location framework apis to get the list of available psy

     */

    void listPsysL();

    /**

     * This method uses the location framework apis to manipulate the state of the Psy

     */

    void changePsyStateL( TUid psyModuleId, PosPsyState psyState );

private :

    /**

     * Pointer to CPosModules

     * Owns

     */

    CPosModules* mPosModules;

    /**

     * Contains list of PSY info

     * Own

     */

    RArray<PosPsyInfo> mPsyInfoList;

    /**

     * Reference to position technology change observer.

     */

    PositionTechnologyChangeObserver& mPosTechChangeObserver;

    /*

     * POinter to the name of the psy

     * ToDo: Should be removed

     */

    QList<QString*> mNameList;

    friend class PosPsySettingsEngine;

    };

#endif /* POSPSYSETTINGSENGINEPRIVATE_H */