/**
* Copyright 2010 JBoss Inc
*
* 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.
*/
package org.eclipse.webdav.dom;
import java.util.Enumeration;
import java.util.NoSuchElementException;
import org.eclipse.webdav.Policy;
import org.w3c.dom.*;
/**
* An element editor for the WebDAV prop element. See RFC2518 section
* 12.11 for the element's definition.
* <p>
* <b>Note:</b> This class/interface is part of an interim API that is still under
* development and expected to change significantly before reaching stability.
* It is being made available at this early stage to solicit feedback from pioneering
* adopters on the understanding that any code that uses this API will almost
* certainly be broken (repeatedly) as the API evolves.
* </p>
*
* @see PropStat
* @see PropertyUpdate
* @see PropFind
* @see Property
*/
public class Prop extends ElementEditor {
/**
* Creates a new editor on the given WebDAV prop element. The element
* is assumed to be well formed.
*
* @param root a prop element
* @throws MalformedElementException if there is reason to
* believe that the element is not well formed
*/
public Prop(Element root) throws MalformedElementException {
super(root, "prop"); //$NON-NLS-1$
}
/**
* Creates a clone of the given element and adds it to this prop. The
* element must not be <code>null</code>.
*
* @param element any element
* @throws MalformedElementException if there is reason to
* believe that the given element is not well formed
*/
public void addProperty(Element element) throws MalformedElementException {
Assert.isNotNull(element);
extractNode(root, element);
}
/**
* Creates a new element with the given name and adds it to this prop.
* The name must not be <code>null</code> and its qualifier and local
* name must not be <code>null</code> and must not be the empty string.
*
* @param name the <code>QualifiedName</code> of the property to add
*/
public void addPropertyName(QualifiedName name) {
Assert.isNotNull(name);
String nsName = name.getQualifier();
Assert.isTrue(!"".equals(nsName)); //$NON-NLS-1$
String localName = name.getLocalName();
Assert.isNotNull(localName);
Assert.isTrue(!localName.equals("")); //$NON-NLS-1$
Document document = root.getOwnerDocument();
Element element = document.createElement(localName);
declareNS(element, null, nsName);
root.appendChild(element);
}
/**
* Returns an <code>Enumeration</code> over this prop's property
* <code>Element</code>s.
*
* @returns an <code>Enumeration</code> of </code>Element</code>s
* @throws MalformedElementException if there is reason to believe that
* this editor's underlying element is not well formed
*/
public Enumeration getProperties() throws MalformedElementException {
Node firstChild = getChildElement(root, true);
final Node firstElement = firstChild;
Enumeration e = new Enumeration() {
Node currentElement = firstElement;
public boolean hasMoreElements() {
return currentElement != null;
}
public Object nextElement() {
if (!hasMoreElements())
throw new NoSuchElementException();
Node nextElement = currentElement;
currentElement = getNextSibling((Element) currentElement);
return nextElement;
}
};
return e;
}
/**
* Returns an <code>Enumeration</code> over this prop's property
* <code>QualifiedName</code>s.
*
* @returns an <code>Enumeration</code> of </code>QualifiedName</code>s
* @throws MalformedElementException if there is reason to believe that
* this editor's underlying element is not well formed
*/
public Enumeration getPropertyNames() throws MalformedElementException {
Node firstChild = getChildElement(root, true);
final Node firstElement = firstChild;
Enumeration e = new Enumeration() {
Node currentElement = firstElement;
public boolean hasMoreElements() {
return currentElement != null;
}
public Object nextElement() {
if (!hasMoreElements())
throw new NoSuchElementException();
String nsName = null;
try {
nsName = getNSName((Element) currentElement);
} catch (MalformedElementException ex) {
Assert.isTrue(false, Policy.bind("assert.internalError")); //$NON-NLS-1$
}
String localName = getNSLocalName((Element) currentElement);
QualifiedNameImpl name = new QualifiedNameImpl(nsName, localName);
currentElement = getNextSibling((Element) currentElement);
return name;
}
};
return e;
}
}