org.htmlunit.cyberneko.xerces.dom.ElementNSImpl Maven / Gradle / Ivy
/*
* Copyright (c) 2017-2024 Ronald Brill
*
* 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
* https://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.
*/
package org.htmlunit.cyberneko.xerces.dom;
import org.htmlunit.cyberneko.xerces.xni.NamespaceContext;
import org.w3c.dom.Attr;
import org.w3c.dom.DOMException;
/**
* ElementNSImpl inherits from ElementImpl and adds namespace support.
*
* The qualified name is the node name, and we store localName which is also
* used in all queries. On the other hand we recompute the prefix when
* necessary.
*
*
* @author Elena litani, IBM
* @author Neeraj Bajaj, Sun Microsystems
*/
public class ElementNSImpl extends ElementImpl {
static final String xmlURI = "http://www.w3.org/XML/1998/namespace";
/** DOM2: Namespace URI. */
protected String namespaceURI;
/** DOM2: localName. */
protected String localName;
// DOM2: Constructor for Namespace implementation.
protected ElementNSImpl(final CoreDocumentImpl ownerDocument, final String namespaceURI, final String qualifiedName)
throws DOMException {
super(ownerDocument, qualifiedName);
setName(namespaceURI, qualifiedName);
}
private void setName(final String namespaceURI, final String qname) {
final String prefix;
// DOM Level 3: namespace URI is never empty string.
this.namespaceURI = namespaceURI;
if (namespaceURI != null) {
// convert the empty string to 'null'
this.namespaceURI = (namespaceURI.length() == 0) ? null : namespaceURI;
}
final int colon1;
final int colon2;
// NAMESPACE_ERR:
// 1. if the qualified name is 'null' it is malformed.
// 2. or if the qualifiedName is null and the namespaceURI is different from
// null,
// We dont need to check for namespaceURI != null, if qualified name is null
// throw DOMException.
if (qname == null) {
final String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NAMESPACE_ERR", null);
throw new DOMException(DOMException.NAMESPACE_ERR, msg);
}
colon1 = qname.indexOf(':');
colon2 = qname.lastIndexOf(':');
ownerDocument.checkNamespaceWF(qname, colon1, colon2);
if (colon1 < 0) {
// there is no prefix
localName = qname;
if (ownerDocument.errorChecking) {
ownerDocument.checkQName(null, localName);
if ("xmlns".equals(qname) && (namespaceURI == null || !namespaceURI.equals(NamespaceContext.XMLNS_URI))
|| (namespaceURI != null && namespaceURI.equals(NamespaceContext.XMLNS_URI)
&& !"xmlns".equals(qname))) {
final String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NAMESPACE_ERR", null);
throw new DOMException(DOMException.NAMESPACE_ERR, msg);
}
}
}
else {
prefix = qname.substring(0, colon1);
localName = qname.substring(colon2 + 1);
// NAMESPACE_ERR:
// 1. if the qualifiedName has a prefix and the namespaceURI is null,
// 2. or if the qualifiedName has a prefix that is "xml" and the namespaceURI
// is different from " http://www.w3.org/XML/1998/namespace"
if (ownerDocument.errorChecking) {
if (namespaceURI == null || ("xml".equals(prefix) && !namespaceURI.equals(NamespaceContext.XML_URI))) {
final String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NAMESPACE_ERR", null);
throw new DOMException(DOMException.NAMESPACE_ERR, msg);
}
ownerDocument.checkQName(prefix, localName);
ownerDocument.checkDOMNSErr(prefix, namespaceURI);
}
}
}
// when local name is known
protected ElementNSImpl(final CoreDocumentImpl ownerDocument, final String namespaceURI, final String qualifiedName, final String localName)
throws DOMException {
super(ownerDocument, qualifiedName);
this.localName = localName;
this.namespaceURI = namespaceURI;
}
// Support for DOM Level 3 renameNode method.
// Note: This only deals with part of the pb. CoreDocumentImpl
// does all the work.
void rename(final String namespaceURI, final String qualifiedName) {
name_ = qualifiedName;
setName(namespaceURI, qualifiedName);
}
/**
* {@inheritDoc}
*
* Introduced in DOM Level 2.
*
*
* The namespace URI of this node, or null if it is unspecified.
*
*
* This is not a computed value that is the result of a namespace lookup based
* on an examination of the namespace declarations in scope. It is merely the
* namespace URI given at creation time.
*
*
* For nodes created with a DOM Level 1 method, such as createElement from the
* Document interface, this is null.
*/
@Override
public String getNamespaceURI() {
return namespaceURI;
}
/**
* {@inheritDoc}
*
* Introduced in DOM Level 2.
*
*
* The namespace prefix of this node, or null if it is unspecified.
*
*
* For nodes created with a DOM Level 1 method, such as createElement from the
* Document interface, this is null.
*/
@Override
public String getPrefix() {
final int index = name_.indexOf(':');
return index < 0 ? null : name_.substring(0, index);
}
/**
* {@inheritDoc}
*
* Introduced in DOM Level 2.
*
*
* Note that setting this attribute changes the nodeName attribute, which holds
* the qualified name, as well as the tagName and name attributes of the Element
* and Attr interfaces, when applicable.
*
*
* @param prefix The namespace prefix of this node, or null(empty string) if it
* is unspecified.
*
* @exception DOMException INVALID_CHARACTER_ERR Raised if the specified prefix
* contains an invalid character.
*/
@Override
public void setPrefix(final String prefix) throws DOMException {
if (ownerDocument.errorChecking) {
if (prefix != null && prefix.length() != 0) {
if (!CoreDocumentImpl.isXMLName(prefix, ownerDocument.isXML11Version())) {
final String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_CHARACTER_ERR", null);
throw new DOMException(DOMException.INVALID_CHARACTER_ERR, msg);
}
if (namespaceURI == null || prefix.indexOf(':') >= 0) {
final String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NAMESPACE_ERR", null);
throw new DOMException(DOMException.NAMESPACE_ERR, msg);
}
else if ("xml".equals(prefix)) {
if (!namespaceURI.equals(xmlURI)) {
final String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NAMESPACE_ERR", null);
throw new DOMException(DOMException.NAMESPACE_ERR, msg);
}
}
}
}
// update node name with new qualifiedName
if (prefix != null && prefix.length() != 0) {
name_ = prefix + ":" + localName;
}
else {
name_ = localName;
}
}
/**
* {@inheritDoc}
*
* Introduced in DOM Level 2.
*
*
* Returns the local part of the qualified name of this node.
*/
@Override
public String getLocalName() {
return localName;
}
/**
* {@inheritDoc}
*
* NON-DOM Returns the xml:base attribute.
*/
@Override
protected Attr getXMLBaseAttribute() {
return (Attr) attributes_.getNamedItemNS("http://www.w3.org/XML/1998/namespace", "base");
}
/**
* @return type name
* @see org.w3c.dom.TypeInfo#getTypeName()
*/
@Override
public String getTypeName() {
return null;
}
/**
* @return namespace tyoe
* @see org.w3c.dom.TypeInfo#getTypeNamespace()
*/
@Override
public String getTypeNamespace() {
return null;
}
/**
* {@inheritDoc}
*
* Introduced in DOM Level 2.
*
* Checks if a type is derived from another by restriction. See:
* http://www.w3.org/TR/DOM-Level-3-Core/core.html#TypeInfo-isDerivedFrom
*
* @param typeNamespaceArg The namspace of the ancestor type declaration
* @param typeNameArg The name of the ancestor type declaration
* @param derivationMethod The derivation method
*
* @return boolean True if the type is derived by restriciton for the reference
* type
*/
@Override
public boolean isDerivedFrom(final String typeNamespaceArg, final String typeNameArg, final int derivationMethod) {
return false;
}
}