idlehomescreen/inc/xndomdepthiterator.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Mon, 21 Jun 2010 15:27:11 +0300
branchRCL_3
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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:  Depth iterator walks the dom tree by depth first.
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*
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*/
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#ifndef XN_DOM_DEPTH_ITERATOR_H
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#define XN_DOM_DEPTH_ITERATOR_H
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//  INCLUDES
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#include <e32base.h>
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#include "mxndomiterator.h"
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// FORWARD DECLARATIONS
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class CXnDomNode;
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// CLASS DECLARATION
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/**
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*  @ingroup group_domdocument
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*  Depth iterator walks through the dom tree using the depth first
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*  principle.
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*
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*  @lib xndomdocument.lib
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*/
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class CXnDomDepthIterator: public CBase, public MXnDomIterator
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    {
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public:
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    /**
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     * Two-phased constructor.
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     * @param aStartNode object to iterate over
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     */
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    IMPORT_C static CXnDomDepthIterator* NewL( CXnDomNode& aStartNode );
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    /**
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     * Destructor.
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     */
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    IMPORT_C virtual ~CXnDomDepthIterator();
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    /**
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     * Documented in MXnDomIterator::First
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     */
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    IMPORT_C CXnDomNode* First();
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    /**
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     * Documented in MXnDomIterator::NextL
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     */
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    IMPORT_C CXnDomNode* NextL();
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private:
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    /**
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     * C++ default constructor
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     */
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    CXnDomDepthIterator( CXnDomNode* aRootNode );
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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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    /**
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     * Push node to stack.
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     * @param aNode Node to push 
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     */
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    //void PushL( CXnDomNode& aNode );
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    /**
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     * Pop node from the stack.
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     * @return Pointer to node
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     */
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    //CXnDomNode* Pop();
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private:
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    // Follow tree hierarchy with stack
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    RPointerArray< CXnDomNode > iStack;   
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    // First node
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    CXnDomNode* iStart;
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    //Current node
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    CXnDomNode* iCurrent;
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    };
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#endif    // XN_DOM_DEPTH_ITERATOR_H  
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// End of File