ParentNode.hpp
上传用户:zhuqijet
上传日期:2013-06-25
资源大小:10074k
文件大小:6k
- #ifndef ParentNode_HEADER_GUARD_
- #define ParentNode_HEADER_GUARD_
- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2002 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- //
- // 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 1.3 2002/11/04 15:04:44 tng 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_BEGIN
- class CDOM_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