idlehomescreen/inc/xndomlist.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 21 Jun 2010 15:27:11 +0300
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/*
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* Copyright (c) 2005,2006 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:  List class to hold MXnDomListItem objects.
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*
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*/
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#ifndef XN_DOM_LIST_H
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#define XN_DOM_LIST_H
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//  INCLUDES
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#include <e32base.h>
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#include <s32strm.h>
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// FORWARD DECLARATIONS
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class MXnDomListItem;
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class CXnDomStringPool;
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// CLASS DECLARATION
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/**
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*  @ingroup group_domdocument
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*  Represents streamable list object, which holds MXnDomListItem objects.
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*
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*  @lib xndomdocument.lib
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*  @since Series 60 3.1
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*/
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class CXnDomList : public CBase
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    {
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    public:
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        enum TListType
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    		{
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    		ENodeList=0,
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    		EAttributeList,
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    		EPropertyList,
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    		EPropertyValueList
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    		};
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    public:  // Constructors and destructor
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        /**
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        * Two-phased constructor.
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        */
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        static CXnDomList* NewL( TListType aListType, 
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                CXnDomStringPool* aStringPool,
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                TInt aGranularity=4);
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        /**
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        * Two-phased stream constructor.
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        */
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        static CXnDomList* NewL( 
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            RReadStream& aStream, 
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            CXnDomStringPool* aStringPool );
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        /**
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        * Destructor.
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        */
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        virtual ~CXnDomList();
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    public: // Adding and removing
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    	/**
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        * Frees memory allocated for all items in a list.
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        * @since Series 60 3.1
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        */
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        IMPORT_C void Reset();
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        /**
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        * List owns items.
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        * @since Series 60 3.1
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        * @param aListItem to add
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        */
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        IMPORT_C void AddItemL( MXnDomListItem* aListItem );
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        /**
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        * List owns items.
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        * @since Series 60 3.1
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        * @param aListItem to add
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        * @param aIndex Index in list where the item is added
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        */
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        IMPORT_C void AddItemL( MXnDomListItem* aListItem, TInt aIndex );
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        /**
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        * Remove item from list.
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        * @since Series 60 3.1
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        * @param Index to aList item to remove
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        */
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        IMPORT_C void RemoveItem( TInt aIndex );
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        /**
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        * Delete item from list.
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        * @since Series 60 3.1
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        * @param Index to aList item to delete
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        */
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        IMPORT_C void DeleteItem( TInt aIndex );
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        /**
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        * Remove item from list.
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        * @since Series 60 3.1
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        * @param aList item to remove
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        */
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        IMPORT_C void RemoveItem( MXnDomListItem* aItem );
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        /**
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        * Delete item from list.
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        * @since Series 60 3.1
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        * @param aList item to delete
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        */
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        IMPORT_C void DeleteItem( MXnDomListItem* aItem );
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   public: // Accessing     
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        /**
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        * List items are accessed by index, i.e like arrays 
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        * @since Series 60 3.1
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        * @param aIndex list item index
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        * @return Pointer to a a list item
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        */
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        IMPORT_C MXnDomListItem* Item( TInt aIndex )const;
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        /**
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        * Number of items in a list.
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        * @since Series 60 3.1
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        * @return Item count
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        */
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        IMPORT_C TInt Length() const;
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        /**
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        * Get the first item in a list.
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        * @since Series 60 3.1
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        * @return Pointer to the first item in a list
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        */
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        IMPORT_C MXnDomListItem* First();
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        /**
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        * The last item in a list
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        * @since Series 60 3.1
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        * @return Pointer to the last item in a list
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        */
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        IMPORT_C MXnDomListItem* Last();
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        /**
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        * Find list item by item name. Searches list items 
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        * which have name attribute.
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        * @since Series 60 3.1
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        * @param aName UTF8 encoded item's name to be searched
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        * @return Pointer to the list item, NULL if not exist.
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        */
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        IMPORT_C MXnDomListItem* FindByName( const TDesC8& aName );
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        /**
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        * Get item index
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        * @since Series 60 3.1
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        * @param aItem Item to be searched
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        * @return Item index or KErrNotFound if not found
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        */
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        IMPORT_C TInt ItemIndex( const MXnDomListItem& aItem )const;
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        /**
2
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        * Get pointer to the dom's string pool.
0
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        * @since Series 60 3.1
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        * @return Reference to string pool
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        */
2
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        IMPORT_C CXnDomStringPool* StringPool() const;
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        /**
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         * Swap used string pool.
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         * 
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         * @param aStringPool   New string pool to be used.
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         *                      Ownership not transferred!
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         */
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        IMPORT_C void SwapStringPoolL( CXnDomStringPool* aStringPool );        
0
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        /**
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        * Count items in a list.
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        */
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        TInt Count() const;
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  public: // Serializing      
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        /**
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        * Get list's data size in bytes.
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        * @since Series 60 3.1
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        * @return Data size in bytes
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        */
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        TInt Size() const;
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        /**
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        * Externalize list's data.
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        * @since Series 60 3.1
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        * @param aStream Output stream
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        */
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        void ExternalizeL( RWriteStream& aStream ) const;
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        /**
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        * Internalize list's data.
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        * @since Series 60 3.1
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        * @param aStream Input stream
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        */
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        void InternalizeL( RReadStream& aStream );
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   public: //Utility
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   		/**
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        * Get list item type.
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        * @since Series 60 3.1
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        * @return List item type
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        */
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        TListType Type() const 
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            {
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            return iListType;
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            }
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   private:
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        /**
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        * C++ default constructor.
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        */
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        CXnDomList( TListType aListType, 
2
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                    CXnDomStringPool* aStringPool, 
0
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                    TInt aGranularity=4 );
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        /**
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        * By default Symbian 2nd phase constructor is private.
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        */
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        void ConstructL();
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    protected:
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        //List type    	
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    	TListType                       iListType;
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        //Items are stored into a segmented array
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        RPointerArray<MXnDomListItem>   iList;
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    private:    // Data
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        // StringPool, not owned
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        CXnDomStringPool*   iStringPool;
0
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    };
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#endif      // XN_DOM_LIST_H  
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// End of File