/*

* Copyright (c) 2003 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:  TLS holder for service settings UI

*

*/

// INCLUDE FILES

#include    "CWVSettingsUITlsHolder.h"

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

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

// CWVSettingsUITlsHolder::CWVSettingsUITlsHolder

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

// might leave.

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

//

CWVSettingsUITlsHolder::CWVSettingsUITlsHolder()

        : iResourceLoaded( EFalse ), iResourceReferenceCount( 0 )

    {

    }

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

// CWVSettingsUITlsHolder::InstanceL

// Singleton retrieve method.

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

//

CWVSettingsUITlsHolder* CWVSettingsUITlsHolder::InstanceL()

    {

    CWVSettingsUITlsHolder* holder = NULL;

    holder = static_cast<CWVSettingsUITlsHolder*>( Dll::Tls() );

    if ( !holder )

        {

        holder = CWVSettingsUITlsHolder::NewLC();

        User::LeaveIfError( Dll::SetTls( holder ) );

        CleanupStack::Pop( holder ); // holder

        }

    return holder;

    }

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

// CWVSettingsUITlsHolder::DestroySingletonsAndHolder()

//

//

// (other items were commented in a header).

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

//

TInt CWVSettingsUITlsHolder::DestroySingletonsAndHolder()

    {

    TInt err = KErrNone;

    CWVSettingsUITlsHolder* holder = NULL;

    holder = static_cast<CWVSettingsUITlsHolder*>( Dll::Tls() );

    if ( holder )

        {

        //holder exist, so try to delete it

        err = Dll::SetTls( NULL );

        if ( err == KErrNone )

            {

            //we could null the TLS - destroy now self

            delete holder;

            }

        else

            {

            //couldn't null the TLS, it's ok

            //destroy just owned singletons

            holder->DoReleaseSingletons();

            }

        }

    return err;

    }

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

// CWVSettingsUITlsHolder::NewLC

// Two-phased constructor.

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

//

CWVSettingsUITlsHolder* CWVSettingsUITlsHolder::NewLC()

    {

    CWVSettingsUITlsHolder* self = new( ELeave ) CWVSettingsUITlsHolder;

    CleanupStack::PushL( self );

    return self;

    }

// Destructor

CWVSettingsUITlsHolder::~CWVSettingsUITlsHolder()

    {

    DoReleaseSingletons();

    }

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

// CWVSettingsUITlsHolder::ResourceIsLoaded()

//

// (other items were commented in a header).

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

//

TBool CWVSettingsUITlsHolder::ResourceIsLoaded() const

    {

    return iResourceLoaded;

    }

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

// CWVSettingsUITlsHolder::ResourceLoaded()

//

// (other items were commented in a header).

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

//

void CWVSettingsUITlsHolder::ResourceLoaded()

    {

    iResourceLoaded = ETrue;

    iResourceReferenceCount++;

    }

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

// CWVSettingsUITlsHolder::ResourceUnLoaded()

//

// (other items were commented in a header).

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

//

void CWVSettingsUITlsHolder::ResourceUnLoaded()

    {

    iResourceReferenceCount--;

    iResourceLoaded = EFalse;

    }

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

// CWVSettingsUITlsHolder::OkToUnloadResource()

//

// (other items were commented in a header).

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

//

TBool CWVSettingsUITlsHolder::OkToUnloadResource() const

    {

    return ( iResourceReferenceCount == 1 );

    }

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

// CWVSettingsUITlsHolder::DoReleaseSingletons()

//

// (other items were commented in a header).

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

//

void CWVSettingsUITlsHolder::DoReleaseSingletons()

    {

    iResourceLoaded = EFalse;

    iResourceReferenceCount = 0;

    }

//  End of File