/*

* 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:  Connection UI interprocess signaller.

*

*/

// INCLUDE FILES

#include <e32std.h>

#include "CCnUiSignaller.h"

// ================= GLOBAL FUNCTIONS ====================

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

// CreateConnUiSignallerL()

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

//

GLREF_C MCnUiSignaller* CreateConnUiSignallerL()

    {

    return CCnUiSignaller::NewL();

    }

GLREF_C MCnUiSignaller* CreateConnUiSignallerLC()

    {

    CCnUiSignaller* self = CCnUiSignaller::NewL();

    CleanupStack::PushL( self );

    return self;

    }

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

// Two-phased constructor.

CCnUiSignaller* CCnUiSignaller::NewL()

    {

    CCnUiSignaller* self = new ( ELeave ) CCnUiSignaller();

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self ); //self

    return self;

    }

// Destructor

CCnUiSignaller::~CCnUiSignaller()

    {

    //no need to explicitly to cancel the

    //signal ==> closing will do it automaticly

    delete iOperationSignalChannel;

    }

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

// might leave.

//

CCnUiSignaller::CCnUiSignaller()

        : iOperationSignalRequested( EFalse )

    {

    }

// Symbian OS default constructor can leave.

void CCnUiSignaller::ConstructL()

    {

    iOperationSignalChannel = CCnUiGroupChannel::NewL( ECnUiGlobalGroup,

                                                       ECnUiGlobalOperationSignalChannel );

    }

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

// CCnUiSignaller::SignalOperationL()

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

//

TInt CCnUiSignaller::SignalOperationL( const TDesC& aDetailDesc )

    {

    if ( OperationRunning() )

        {

        return KErrInUse;

        }

    //construct objects

    iOperationSignalChannel->SignalL( aDetailDesc );

    iOperationSignalRequested = ETrue;

    return KErrNone;

    }

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

// CCnUiSignaller::CancelOperationSignal()

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

//

void CCnUiSignaller::CancelOperationSignal()

    {

    if ( iOperationSignalRequested )

        {

        iOperationSignalChannel->CancelSignal();

        iOperationSignalRequested = EFalse;

        }

    }

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

// CCnUiSignaller::OperationRunning()

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

//

TBool CCnUiSignaller::OperationRunning()

    {

    TInt signalCount = 0;

    iOperationSignalChannel->Read( signalCount );

    return ( signalCount > 0 );

    }

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

// CCnUiSignaller::OperationDetailsL()

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

//

void CCnUiSignaller::OperationDetailsL( HBufC*& aDetailDesc )

    {

    if ( !OperationRunning() )

        {

        //if the operation isn't running

        //values are defaulted to empty buffer and 0

        aDetailDesc = KNullDesC().AllocL();

        }

    else

        {

        iOperationSignalChannel->ReadL( aDetailDesc );

        }

    }

//  End of File