/*

* Copyright (c) 2008 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: 

*

*/

// INCLUDE FILES

#include <e32std.h>

#include <e32cmn.h>

#include <E32HAL.H>

#include <wlaninternalpskeys.h> // For WLAN state checking

#include "ApiProvider.h"

#include "WlanObserver.h"

#include "Display.h"

// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// CWlanObserver::CWlanObserver

// C++ default constructor can NOT contain any code, that

// might leave.

// -----------------------------------------------------------------------------

CWlanObserver::CWlanObserver(MApiProvider& aApiProvider)

    : CActive( EPriorityStandard ),

    iApiProvider( aApiProvider )

    {       

    CActiveScheduler::Add( this );

    iWlanProperty.Attach( KPSUidWlan, KPSWlanIndicator );  

    iWlanProperty.Subscribe( iStatus ); 

    SetActive();

    }

// -----------------------------------------------------------------------------

// CWlanObserver::~CWlanObserver()

// Destructor

// -----------------------------------------------------------------------------

CWlanObserver::~CWlanObserver()

    {        

    Cancel();    

    iWlanProperty.Close(); 

    }

// -----------------------------------------------------------------------------

// CWlanObserver::GetCurrentState

//

// Retrieves current state of wireless lan connection

// @param aWlanStateValue reference to current Wlan state value which is updated here

// @return: EFalse if error condition (ignore aWlanStateValue in this case)

//          Etrue if no error (get updated value from aWlanStateValue)

// -----------------------------------------------------------------------------

TBool CWlanObserver::GetCurrentState(TInt &aWlanStateValue)

    {

    TInt value;

    TInt errorval = iWlanProperty.Get( value );          

    if (!errorval )

        {

        aWlanStateValue = value;

        return( ETrue );

        }

    else

        {

        return( EFalse );

        }

    }

// -----------------------------------------------------------------------------

// CWlanObserver::RunL

// -----------------------------------------------------------------------------

void CWlanObserver::RunL()

    {

    if( iStatus==KErrNone )

       {        

        iWlanProperty.Subscribe( iStatus ); 

        SetActive();

        TInt value;   

        if ( GetCurrentState(value) )

            {

            iApiProvider.Display().UpdateWlanIndicator( value );

            }

       }    

    }

// -----------------------------------------------------------------------------

// CWlanObserver::RunError

// -----------------------------------------------------------------------------

TInt CWlanObserver::RunError( TInt /*aError*/ )

    {

    return KErrNone;

    }

// -----------------------------------------------------------------------------

// CWlanObserver::DoCancel

// -----------------------------------------------------------------------------

void CWlanObserver::DoCancel()

    {    

    iWlanProperty.Cancel();

    }

//  End of File