/*

* Copyright (c) 2009 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:

*

*/

#include <e32base.h>

#include "mcschildrenhandler.h"

#include "mcsdef.h"

#include "mcsmenunotifier.h"

#include "menueng.h"

#include "mcscachehandler.h"

#include "menusrveng.h"

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

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

// CMcsChildrenHandler::NewL

// Two-phased constructor.

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

//

CMcsChildrenHandler* CMcsChildrenHandler::NewL( 

    CMenuSrvEng& aSrvEng,

    CMcsCacheHandler& aCacheHandler )

	{

	CMcsChildrenHandler* self = new( ELeave ) 

				CMcsChildrenHandler( aSrvEng, aCacheHandler );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

	}

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

// Destructor

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

//

CMcsChildrenHandler::~CMcsChildrenHandler()

	{

	delete iScanner;

	}

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

// CMcsChildrenHandler::CMcsChildrenHandler

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

// might leave.

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

//

CMcsChildrenHandler::CMcsChildrenHandler( 

    CMenuSrvEng& aSrvEng,

    CMcsCacheHandler& aCacheHandler  ) :

    iSrvEng( aSrvEng ),

    iCacheHandler( aCacheHandler )

	{

	}

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

// CMcsDrmHandler::ConstructL

// Symbian 2nd phase constructor can leave.

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

void CMcsChildrenHandler::ConstructL()

	{

	iScanner = CMcsChildrenScanner::NewL(*this, iSrvEng);

	}

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

// 

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

//

void CMcsChildrenHandler::HandleChildrenEvent(TInt aId, TUint aOldCount, TUint aNewCount)

	{

	if (aOldCount != aNewCount)

		{

		iCacheHandler.HandleRemoveAttribute(aId, KChildrenCount);

		// Send Notification

		if (aOldCount == 0 || aNewCount == 0)

			{

			TRAP_IGNORE( iSrvEng.Engine().ModifiableObjectL( 

					aId, RMenuNotifier::EItemAttributeChanged ));

			}

		}

	}

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

// 

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

//

void CMcsChildrenHandler::EngineEvents( TInt aFolder, TInt aEvents )

	{

    if ( aEvents & ( RMenuNotifier::EItemsAddedRemoved 

                   | RMenuNotifier::EItemAttributeChanged ) )

        {

        iScanner->Scan(aFolder);

        }    

	}

//  End of File