/*

* Copyright (c) 2007 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: 

*

*/

#ifndef C_WLAN_PLUGIN_DB_OBSERVER

#define C_WLAN_PLUGIN_DB_OBSERVER

// System includes

#include <e32base.h>

#include <wlancontainer.h>

#include <d32dbms.h> 

#include <WlanCdbCols.h>

#include <commsdat.h>

#include <wlanmgmtclient.h>

//forward declaration

class TWsfAiController;

/**

* Database observer class.

*/

NONSHARABLE_CLASS( CWsfDbObserver ) : public CActive

    {

    public:

        /**

        * The Constructor.

        */

        /**

        * First phase of two phased construction.

        */

        /**

        * This function activates this object as an active object.

        */

        void ActivateItL();

        /**

        * Destructor.

        */

        virtual ~CWsfDbObserver();

        /**

         * Set the controller

         */

        void SetController( TWsfAiController* aController );

        /**

         * Set WLAN availablity to scanning

         */

        void EnableScanL();

        /*

         * Set WLAN availablity to not scanning

         */

        void DisableScanL();

    protected:

        /**

        * When the WLAN device settings table is accessed this function

        * is called. Handle of the active object.

        */

        void RunL();

        /**

        * Whan waiting for a database access is stopped this function

        * is called.

        */

        void DoCancel();

    private:

        /**

        * Second phase of two phase construction.

        */

        void ConstructL();

        /*

         * Get default scanning interval 

         */

        TInt DefaultScanIntervalL();

    private:  

        /**

        * A CommsDat session fod database access.

        */

        CMDBSession* iSession;

        /**

        * A class representing a recor of WLAN Devive Settings table.

        */

        CCDWlanDeviceSettingsRecord* iRecord;

        /**

        * The value of it shows the scan state of the WLAN availablity

        */

        TBool iOuterScanState;

        /**

         * Reference to the controller class of the module.

         */

        TWsfAiController* iController;

        /**

        * Handle to the WLAN management client (owned)

        */

        CWlanMgmtClient* iWlanMgmtClient;

    };

#endif //C_WLAN_PLUGIN_DB_OBSERVER