163 lines
4.6 KiB
C++
163 lines
4.6 KiB
C++
/*
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* (C) Copyright The MITRE Corporation 1999 All rights reserved.
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* The program provided "as is" without any warranty express or
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* implied, including the warranty of non-infringement and the implied
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* warranties of merchantibility and fitness for a particular purpose.
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* The Copyright owner will not be liable for any damages suffered by
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* you as a result of using the Program. In no event will the Copyright
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* owner be liable for any special, indirect or consequential damages or
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* lost profits even if the Copyright owner has been advised of the
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* possibility of their occurrence.
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*
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* Please see release.txt distributed with this file for more information.
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*
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*/
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// Tom Kneeland (3/29/99)
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//
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// Implementation of the Document Object Model Level 1 Core
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// Implementation of the Element class
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//
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// Modification History:
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// Who When What
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// TK 03/29/99 Created
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// LF 08/06/1999 fixed typo: defalut to default
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//
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#include "dom.h"
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//
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//Construct a new element with the specified tagName and Document owner.
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//Simply call the constructor for NodeDefinition, and specify the proper node
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//type.
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//
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Element::Element(const DOMString& tagName, Document* owner) :
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NodeDefinition(Node::ELEMENT_NODE, tagName, NULL_STRING, owner)
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{
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}
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//
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//First check to see if the new node is an allowable child for an Element. If
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//it is, call NodeDefinition's implementation of Insert Before. If not, return
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//null as an error
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//
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Node* Element::insertBefore(Node* newChild, Node* refChild)
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{
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Node* returnVal = NULL;
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switch (newChild->getNodeType())
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{
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case Node::ELEMENT_NODE :
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case Node::TEXT_NODE :
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case Node::COMMENT_NODE :
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case Node::PROCESSING_INSTRUCTION_NODE :
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case Node::CDATA_SECTION_NODE :
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case Node::DOCUMENT_FRAGMENT_NODE : //-- added 19990813 (kvisco)
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case Node::ENTITY_REFERENCE_NODE:
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returnVal = NodeDefinition::insertBefore(newChild, refChild);
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break;
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default:
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returnVal = NULL;
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}
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return returnVal;
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}
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//
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//Return the tagName for this element. This is simply the nodeName.
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//
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const DOMString& Element::getTagName()
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{
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return nodeName;
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}
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//
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//Retreive an attribute's value by name. If the attribute does not exist,
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//return a reference to the pre-created, constatnt "NULL STRING".
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//
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const DOMString& Element::getAttribute(const DOMString& name)
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{
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Node* tempNode = attributes.getNamedItem(name);
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if (tempNode)
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return attributes.getNamedItem(name)->getNodeValue();
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else
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return NULL_STRING;
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}
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//
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//Add an attribute to this Element. Create a new Attr object using the
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//name and value specified. Then add the Attr to the the Element's
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//attributes NamedNodeMap.
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//
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void Element::setAttribute(const DOMString& name, const DOMString& value)
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{
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Attr* tempAttribute;
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//Check to see if an attribute with this name already exists. If it does
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//over write its value, if not, add it.
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tempAttribute = getAttributeNode(name);
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if (tempAttribute)
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tempAttribute->setNodeValue(value);
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else
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{
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tempAttribute = getOwnerDocument()->createAttribute(name);
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tempAttribute->setNodeValue(value);
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attributes.setNamedItem(tempAttribute);
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}
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}
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//
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//Remove an attribute from the attributes NamedNodeMap, and free its memory.
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// NOTE: How do default values enter into this picture
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//
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void Element::removeAttribute(const DOMString& name)
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{
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delete attributes.removeNamedItem(name);
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}
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//
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//Return the attribute specified by name
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//
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Attr* Element::getAttributeNode(const DOMString& name)
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{
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return (Attr*)attributes.getNamedItem(name);
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}
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//
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//Set a new attribute specifed by the newAttr node. If an attribute with that
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//name already exists, the existing Attr is removed from the list and return to
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//the caller, else NULL is returned.
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//
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Attr* Element::setAttributeNode(Attr* newAttr)
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{
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Attr* pOldAttr = (Attr*)attributes.removeNamedItem(newAttr->getNodeName());
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attributes.setNamedItem(newAttr);
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return pOldAttr;
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}
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//
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//Remove the Attribute from the attributes list and return to the caller. If
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//the node is not found, return NULL.
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//
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Attr* Element::removeAttributeNode(Attr* oldAttr)
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{
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return (Attr*)attributes.removeNamedItem(oldAttr->getNodeName());
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}
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NodeList* Element::getElementsByTagName(const DOMString& name)
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{
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return 0;
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}
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void Element::normalize()
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{
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}
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