/*

* Copyright (c) 2002 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:  

*       Implementaion of CCbsUiTopicListMonitor.

*

*

*/

// INCLUDES

#include "MCbs.h"

#include "CCbsUiTopicListMonitor.h"

#include "MCbsUiTopicMonitorObserver.h"

#include "CbsUiPanic.h"

#include "CbsUiConstants.h"

// CONSTANTS

const TInt KNumberOfObservers = 3;

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

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

// might leave.

//

CCbsUiTopicListMonitor::CCbsUiTopicListMonitor( MCbs& aServer )

    : CActive(EPriorityStandard), iContinue(ETrue), iServer(aServer)

    {

    }

// Symbian OS default constructor can leave

void CCbsUiTopicListMonitor::ConstructL( )

    {    

    CActiveScheduler::Add(this);

    IssueRequest();

    iObservers = new (ELeave) TCbsUiMonitorObservers(KNumberOfObservers);

    }

// Two-phased constructor.

CCbsUiTopicListMonitor* CCbsUiTopicListMonitor::NewL( MCbs& aServer )

    {

    CCbsUiTopicListMonitor* self = 

        new (ELeave) CCbsUiTopicListMonitor(aServer);

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop();

    return self;

    }

// Destructor

CCbsUiTopicListMonitor::~CCbsUiTopicListMonitor()

    {

    delete iObservers;

    Cancel();

    }

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

// CCbsUiTopicListMonitor::IssueRequest()

// 

// 

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

void CCbsUiTopicListMonitor::IssueRequest()

    {

    if ( iContinue )

        {

        SetActive();

        iServer.NotifyOnTopicListEvent( 

            iStatus, ECbsTopicAllEvents, iEvent, iTopicNumber );

        }

    }

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

// CCbsUiTopicListMonitor::RunL

// 

// 

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

void CCbsUiTopicListMonitor::RunL()  

    {

    if ( iObservers->Count() > 0 )

        {

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

            {

            iObservers->At(i)->TopicListChangedL(iEvent, iTopicNumber);

            }

        }

    __ASSERT_DEBUG( 

        (iEvent & ECbsTopicAllEvents), CbsUiPanic(EErrInvalidEvent) );

    if ( iContinue )

        {

        IssueRequest();

        }

    }

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

// CCbsUiTopicListMonitor::DoCancel

// 

// 

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

void CCbsUiTopicListMonitor::DoCancel()

    {

    iContinue = EFalse;

    iServer.NotifyOnTopicListEventCancel();

    }

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

// CCbsUiTopicListMonitor::AddObserverL

// 

// 

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

void CCbsUiTopicListMonitor::AddObserverL(

    MCbsUiTopicMonitorObserver* aObserver )

    {

    __ASSERT_DEBUG( iObservers, CbsUiPanic(EErrNullPointer) );

    __ASSERT_DEBUG( aObserver, CbsUiPanic(EErrNullPointer) );

    iObservers->AppendL(aObserver);

    }

//  End of File