/*

* 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:  A class implementing two stacks. One is a fifo-stack of

*               reader events, the other a random-access stack of service

*               providers that are not used with a given reader

*

*/

// INCLUDE FILES

#include    "ScardBase.h"

#include    "ScardEventStack.h"

#include    "ScardConnector.h"

#include    "WimTrace.h"

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

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

// CScardEventStack::CScardEventStack

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

// might leave.

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

//

CScardEventStack::CScardEventStack()

    {

    }

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

// CScardEventStack::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CScardEventStack::ConstructL( CScardConnector* aConnector )

    {

    _WIMTRACE(_L("WIM|Scard|CScardEventStack::ConstructL|Begin"));

    iConnector = aConnector;

    iEvents = new ( ELeave ) CArrayFixFlat<TQueueEvent>( 1 );

    }

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

// CScardEventStack::NewL

// Two-phased constructor.

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

//

CScardEventStack* CScardEventStack::NewL( CScardConnector* aConnector )

    {

    _WIMTRACE(_L("WIM|Scard|CScardEventStack::NewL|Begin"));

    CScardEventStack* self = new( ELeave ) CScardEventStack;

    CleanupStack::PushL( self );

    self->ConstructL( aConnector );

    CleanupStack::Pop( self );

    return self;

    }

// Destructor

CScardEventStack::~CScardEventStack()

    {

    _WIMTRACE(_L("WIM|Scard|CScardEventStack::~CScardEventStack|Begin"));

    if ( iEvents )

        {

        iEvents->Reset();

        }

    delete iEvents;    

    }

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

// CScardEventStack::QueueEvent

// Queue event

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

//

void CScardEventStack::QueueEvent(

    const TReaderID aReaderID, 

    const TScardServiceStatus aEventType )

    {

    _WIMTRACE(_L("WIM|Scard|CScardEventStack::QueueEvent|Begin"));

    //  Remove any old events for this reader to ensure that no out-of-date 

    //  events are in the stack

    for ( TInt i( 0 ); i < iEvents->Count(); i++ )

        {

        if ( iEvents->At( i ).iReaderID == aReaderID )

            {

            iEvents->Delete( i );

            break;

            }

        }

    //  Add event to the stack

    TQueueEvent event;

    event.iEventType = aEventType;

    event.iReaderID = aReaderID;

    TRAPD( mem_ok, iEvents->AppendL( event ) );

    __ASSERT_MEMORY( mem_ok );

    }

//  End of File