/*

* Copyright (c) 2005-2009 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:  Implementation for bearer WLAN.

*

*/

#include "ConnMonBearerWLAN.h"

#include "connmoncommsdatcache.h"

#include "ConnMonIAP.h"

#include "log.h"

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

// Construction

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

//

TConnMonBearerWLAN::TConnMonBearerWLAN(

        CConnMonIAP* aConnMonIAP,

        CConnMonCommsDatCache* aCommsDatCache )

        :

        TConnMonBearer( aConnMonIAP, aCommsDatCache )

    {

    }

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

// Is bearer available

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

//

TInt TConnMonBearerWLAN::GetAvailability( TBool& /*aAvailable*/ ) const

    {

    // Not defined or not needed

    return KErrNotSupported;

    }

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

// Bearer ID getter

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

//

TUint TConnMonBearerWLAN::BearerId() const

    {

    return EBearerIdWLAN;

    }

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

// ETrue if bearer is valid (internal state is correct)

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

//

TBool TConnMonBearerWLAN::Valid() const

    {

    return ETrue;

    }

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

// Sets available IAPs of this type as available in CommsDat cache

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

//

void TConnMonBearerWLAN::FlagAvailableIaps() const

    {

    LOGENTRFN("TConnMonBearerWLAN::FlagAvailableIaps()")

    RArray<TUint> availableIdArray;

    RArray<TUint> activeIdArray;

    iConnMonIAP->GetActiveConnectionsIds( EBearerIdWLAN, activeIdArray );

    if ( activeIdArray.Count() == 0 )

        {

        iConnMonIAP->AppendAvailableWLANIaps( availableIdArray );

        }

    else

        {

        LOGIT1("Found %d active WLAN IAPs", activeIdArray.Count())

        // Policy based roaming. If current WLAN connection RSS (received

        // signal strength) is not strong enough, don't give any WLAN IAPs in

        // available state.

        if ( iConnMonIAP->WlanRssGoodEnough() )

            {

            // KErrDisconnected will be returned if request for used SSID from WLAN engine fails.

            TInt err = iConnMonIAP->AppendAvailableWLANIapsBySsid( availableIdArray );

            if ( err != KErrNone )

                {

                availableIdArray.Reset();

                if ( err == KErrDisconnected )

                    {

                    activeIdArray.Reset(); // No longer connected.

                    iConnMonIAP->AppendAvailableWLANIaps( availableIdArray );

                    }

                }

            }

        else

            {

            // Current WLAN RSS is too weak, don't report any WLAN IAPs available.

            availableIdArray.Reset();

            activeIdArray.Reset();

            }

        }

    for ( TInt i = 0; i < availableIdArray.Count(); i++ )

        {

        iCommsDatCache->SetAvailableIapWithId( availableIdArray[i] );

        }

    for ( TInt i = 0; i < activeIdArray.Count(); i++ )

        {

        // This will only add EasyWLAN IAP ID as available in those cases when

        // the connection was started with it. This is done so there can't be a

        // situation when a connection is up but ConnMon reports that

        // connections IAP as unavailable. (EasyWLAN IAP has empty SSID field in

        // CommsDat, so AppendAvailableWLANIapsBySsid-method will not find it).

        iCommsDatCache->SetAvailableIapWithId( activeIdArray[i] );

        }

    availableIdArray.Close();

    activeIdArray.Close();

    LOGEXITFN("TConnMonBearerWLAN::FlagAvailableIaps()")

    }

// End-of-file