/*

* Copyright (c) 2005 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:  Base class for session slot, reference counted objects.

*

*/

// INCLUDE FILES

#include <E32Std.h>

#include "CPEngSessionSlotObject.h"

#include "CPEngSessionSlotObjectCon.h"

#include "CPEngSessionSlotId.h"

//LOCAL constants

namespace

    {

    _LIT( KPEngSlotObjectPanic, "AttrSlotObj" );

    enum TPEngSlotObjectPanicReasons

        {

        ESlotObjAccessCountNegative,

        ESlotObjHasAlreadyOwner,

        };

    void PanicSlotObj( TPEngSlotObjectPanicReasons aPanicReason )

        {

        User::Panic( KPEngSlotObjectPanic, aPanicReason );

        }

    }

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

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

// CPEngSessionSlotObject::CPEngSessionSlotObject

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

// might leave.

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

//

CPEngSessionSlotObject::CPEngSessionSlotObject()

        : iAccessCount( 1 )

    {

    }

// Destructor

CPEngSessionSlotObject::~CPEngSessionSlotObject()

    {

    delete iSlotId;

    if ( iContainer )

        {

        iContainer->Remove( this );

        }

    if ( iOwner )

        {

        iOwner->Close();

        }

    }

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

// CPEngSessionSlotObject::Open()

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

//

void CPEngSessionSlotObject::Open()

    {

    iAccessCount++;

    }

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

// CPEngSessionSlotObject::Close()

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

//

void CPEngSessionSlotObject::Close()

    {

    __ASSERT_DEBUG( ( iAccessCount >= 1 ), PanicSlotObj( ESlotObjAccessCountNegative ) );

    iAccessCount--;

    if ( iAccessCount == 0 )

        {

        delete this;

        }

    }

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

// CPEngSessionSlotObject::ConstructL()

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

//

void CPEngSessionSlotObject::ConstructL( const CPEngSessionSlotId& aSlotId )

    {

    iSlotId = aSlotId.CloneL();

    }

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

// CPEngSessionSlotObject::SlotId()

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

//

const CPEngSessionSlotId& CPEngSessionSlotObject::SlotId() const

    {

    return *iSlotId;

    }

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

// CPEngSessionSlotObject::SetOwner()

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

//

void CPEngSessionSlotObject::SetOwner( CObject& aOwner )

    {

    __ASSERT_ALWAYS( !iOwner, PanicSlotObj( ESlotObjHasAlreadyOwner ) );

    iOwner = &aOwner;

    TInt val = iOwner->Open();     // CSI: 65 #

    }

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

// CPEngSessionSlotObject::RefCount()

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

//

TInt CPEngSessionSlotObject::RefCount() const

    {

    return iAccessCount;

    }

//  End of File