/*******************************************************************************
* Copyright (c) 2005 Oracle Corporation.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Ian Trimble - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.dtmanager.converter.operations.internal;
import org.eclipse.core.runtime.Assert;
import org.eclipse.jst.pagedesigner.dtmanager.converter.operations.AbstractTransformOperation;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
/**
* Copies a single attribute from the source Element instance to the current
* Element instance, and optionally creates a new attribute on the current
* Element instance if no such attribute exists on the source Element instance.
*
* @author Ian Trimble - Oracle
*/
public class CopyAttributeOperation extends AbstractTransformOperation {
private String attributeName;
private boolean create;
private String newAttributeValue;
/*
* (non-Javadoc)
* @see org.eclipse.jst.pagedesigner.dtmanager.converter.operations.internal.provisional.AbstractTransformOperation#transform(org.w3c.dom.Element, org.w3c.dom.Element)
*/
public Element transform(Element srcElement, Element curElement) {
if (getParameters().length < 1) {
getLog().error("Warning.TransformOperationFactory.TooFewParameters", getTransformOperationID()); //$NON-NLS-1$
return null;
} else if (getParameters().length < 3) {
attributeName = getParameters()[0];
} else {
attributeName = getParameters()[0];
create = Boolean.valueOf(getParameters()[1]).booleanValue();
newAttributeValue = getParameters()[2];
}
Assert.isNotNull(attributeName);
if (srcElement != null && curElement != null) {
Attr attribute = srcElement.getAttributeNode(attributeName);
if (attribute != null) {
curElement.setAttribute(attributeName, attribute.getValue());
} else if (create && newAttributeValue != null) {
curElement.setAttribute(attributeName, newAttributeValue);
}
}
return curElement;
}
}