#ifndef ParentNode_HEADER_GUARD_#define ParentNode_HEADER_GUARD_/* * Copyright 1999-2002,2004 The Apache Software Foundation. *  * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at *  *      http://www.apache.org/licenses/LICENSE-2.0 *  * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */////  This file is part of the internal implementation of the C++ XML DOM.//  It should NOT be included or used directly by application programs.////  Applications should include the file <xercesc/dom/deprecated/DOM.hpp> for the entire//  DOM API, or DOM_*.hpp for individual DOM classes, where the class//  name is substituded for the *.///* * $Id: ParentNode.hpp,v 1.5 2004/09/08 13:55:44 peiyongz Exp $ *//** * ParentNode inherits from ChildImpl and adds the capability of having child * nodes. Not every node in the DOM can have children, so only nodes that can * should inherit from this class and pay the price for it. * <P> * ParentNode, just like NodeImpl, also implements NodeList, so it can * return itself in response to the getChildNodes() query. This eliminiates * the need for a separate ChildNodeList object. Note that this is an * IMPLEMENTATION DETAIL; applications should _never_ assume that * this identity exists. * <P> * While we have a direct reference to the first child, the last child is * stored as the previous sibling of the first child. First child nodes are * marked as being so, and getNextSibling hides this fact. * <P>Note: Not all parent nodes actually need to also be a child. At some * point we used to have ParentNode inheriting from NodeImpl and another class * called ChildAndParentNode that inherited from ChildNode. But due to the lack * of multiple inheritance a lot of code had to be duplicated which led to a * maintenance nightmare. At the same time only a few nodes (Document, * DocumentFragment, Entity, and Attribute) cannot be a child so the gain is * memory wasn't really worth it. The only type for which this would be the * case is Attribute, but we deal with there in another special way, so this is * not applicable. * * <p><b>WARNING</b>: Some of the code here is partially duplicated in * AttrImpl, be careful to keep these two classes in sync! * **/#include <xercesc/util/XercesDefs.hpp>#include "ChildNode.hpp"XERCES_CPP_NAMESPACE_BEGINclass DEPRECATED_DOM_EXPORT ParentNode: public ChildNode {public:    DocumentImpl            *ownerDocument; // Document this node belongs to    ChildNode                *firstChild;public:    ParentNode(DocumentImpl *ownerDocument);    ParentNode(const ParentNode &other);    virtual DocumentImpl * getOwnerDocument();    virtual void setOwnerDocument(DocumentImpl *doc);    virtual NodeListImpl *getChildNodes();    virtual NodeImpl * getFirstChild();    virtual NodeImpl * getLastChild();    virtual unsigned int getLength();    virtual bool        hasChildNodes();    virtual NodeImpl    *insertBefore(NodeImpl *newChild, NodeImpl *refChild);    virtual NodeImpl    *item(unsigned int index);    virtual NodeImpl    * removeChild(NodeImpl *oldChild);    virtual NodeImpl    *replaceChild(NodeImpl *newChild, NodeImpl *oldChild);    virtual void        setReadOnly(bool isReadOnly, bool deep);    //Introduced in DOM Level 2    virtual void	normalize();    // NON-DOM    // unlike getOwnerDocument this never returns null, even for Document nodes    virtual DocumentImpl * getDocument();protected:    void cloneChildren(const NodeImpl &other);    ChildNode * lastChild();    void lastChild(ChildNode *);    /** Cached node list length. */    int fCachedLength;    /** Last requested child. */    ChildNode * fCachedChild;    /** Last requested child index. */    int fCachedChildIndex;};XERCES_CPP_NAMESPACE_END#endif