menucontentsrv/srvsrc/mcsgetlisttreecreator.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:54:17 +0200
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/*
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* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  
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*
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*/
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#include <e32cmn.h> 
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#include <liwcommon.h>
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#include <liwgenericparam.h>
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#include <s32mem.h>
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#include "mcsgetlisttreecreator.h"
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// ---------------------------------------------------------
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// CMcsGetlistTreeCreator::NewL
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// ---------------------------------------------------------
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//
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CMcsGetlistTreeCreator* CMcsGetlistTreeCreator::NewL( CMenuSrvEng& aEng )
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	{
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	CMcsGetlistTreeCreator* self;
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	self = new ( ELeave ) CMcsGetlistTreeCreator( aEng );
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	CleanupStack::PushL( self );
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	self->ConstructL();
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	CleanupStack::Pop( self );
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	return self;
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	}
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// ---------------------------------------------------------
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// CMcsGetlistTreeCreator::~CMcsGetlistTreeCreator
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// ---------------------------------------------------------
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//
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CMcsGetlistTreeCreator::~CMcsGetlistTreeCreator()
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    {
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    }
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// ---------------------------------------------------------
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// CMcsGetlistTreeCreator::CMcsGetlistTreeCreator
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// ---------------------------------------------------------
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//
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CMcsGetlistTreeCreator::CMcsGetlistTreeCreator( CMenuSrvEng& aEng ):
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	CMcsGetListCreatorInterface(aEng)
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    {
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    }
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// ---------------------------------------------------------
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// CMcsGetlistTreeCreator::ConstructL
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// ---------------------------------------------------------
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//
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void CMcsGetlistTreeCreator::ConstructL()
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    {
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    CMcsGetListCreatorInterface::ConstructL();
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    }
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// ---------------------------------------------------------
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// CMcsGetlistTreeCreator::CreateLC
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// ---------------------------------------------------------
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//
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CLiwDefaultList* CMcsGetlistTreeCreator::CreateLC(
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	RArray<TMenuItem>& aIdsArray,
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	CDesC16Array* aRequiredAttributes,
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	CDesC16Array* aIgnoredAttributes )
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	{
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	CLiwDefaultList* list = CLiwDefaultList::NewLC();
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	iRequiredAttributes = aRequiredAttributes;
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	iIgnoredAttributes = aIgnoredAttributes;
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	TInt index = 0;
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	if ( aIdsArray.Count() )
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		{
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		BuildTreeListL( aIdsArray, *list, index, aIdsArray[0].Parent() );
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		}
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	return list;
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	}
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// ---------------------------------------------------------------------------
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// Build List for Output paremeter in a tree format
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// ---------------------------------------------------------------------------
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//
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void CMcsGetlistTreeCreator::BuildTreeListL( RArray<TMenuItem>& aIdsArray,
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		CLiwDefaultList& aList,	TInt& aIndex, TInt aParentId )
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	{
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	TBool buildlist = ETrue ;
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	TInt  prevId = 0;
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	TInt  arrCount = aIdsArray.Count();
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	for( TInt index = aIndex; index < arrCount &&  buildlist; ++index )
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		{
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		CLiwDefaultMap* map = CLiwDefaultMap::NewLC();
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		if( aParentId == aIdsArray[index].Parent() )
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			{
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			buildlist = ETrue;
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			// Build Map
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			BuildMapL( aIdsArray[index], iRequiredAttributes,
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						iIgnoredAttributes, map );
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			aList.AppendL(TLiwVariant(map));
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			}
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		else
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			{
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			if( prevId ==  aIdsArray[index].Parent() )
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				{
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				// Recursive Child List
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				CLiwDefaultList *childlist = CLiwDefaultList::NewL();
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				CleanupStack::PushL( childlist );
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				// Build Child List
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				BuildTreeListL( aIdsArray, *childlist, index, aIdsArray[index].Parent() );
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				InsertChildListL(aList, childlist);
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				CleanupStack::Pop( childlist );
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				childlist->DecRef();
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				}
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			else
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				{
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				// Return from recursive list
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				buildlist = EFalse;
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				aIndex = index-1;
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				}
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			}
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		prevId = aIdsArray[index].Id();
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		CleanupStack::PopAndDestroy( map );
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		}
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	}
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// ---------------------------------------------------------------------------
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// Insert Children list to last item in tree list
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// ---------------------------------------------------------------------------
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//
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void CMcsGetlistTreeCreator::InsertChildListL(CLiwDefaultList& aList,
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		CLiwDefaultList* aChildList)
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	{
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	TInt index = aList.Count() - 1;
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	// Get last item from aList
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	TLiwVariant livVar;
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	livVar.PushL();
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	aList.AtL(index, livVar);
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	CLiwDefaultMap* map = CLiwDefaultMap::NewLC();
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	livVar.Get(*map);
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	// Insert children list to that item
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	map->InsertL(KChildren, TLiwVariant(aChildList));
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	// Remove last item form a list and add a new one
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	aList.Remove(index);
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	aList.AppendL(TLiwVariant(map) );
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	CleanupStack::Pop(map);
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	map->DecRef();
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	CleanupStack::PopAndDestroy(&livVar);
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	}
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//  End of File