package client.net.sf.saxon.ce.dom;
import client.net.sf.saxon.ce.event.PipelineConfiguration;
import client.net.sf.saxon.ce.event.Receiver;
import client.net.sf.saxon.ce.lib.NamespaceConstant;
import client.net.sf.saxon.ce.om.NamePool;
import client.net.sf.saxon.ce.om.NamespaceBinding;
import client.net.sf.saxon.ce.trans.XPathException;
import client.net.sf.saxon.ce.value.Whitespace;
import com.google.gwt.xml.client.*;
/**
* DOMWriter is a Receiver that attaches the result tree to a specified Node in the DOM Document
*/
public class DOMWriter implements Receiver {
private PipelineConfiguration pipe;
private NamePool namePool;
private Node currentNode;
private Document document;
private Node nextSibling;
private int level = 0;
private boolean canNormalize = true;
private String systemId;
/**
* Set the pipelineConfiguration
*/
public void setPipelineConfiguration(PipelineConfiguration pipe) {
this.pipe = pipe;
namePool = pipe.getConfiguration().getNamePool();
}
/**
* Get the pipeline configuration used for this document
*/
public PipelineConfiguration getPipelineConfiguration() {
return pipe;
}
/**
* Set the System ID of the destination tree
*/
public void setSystemId(String systemId) {
this.systemId = systemId;
}
/**
* Get the system identifier that was set with setSystemId.
*
* @return The system identifier that was set with setSystemId,
* or null if setSystemId was not called.
*/
public String getSystemId() {
return systemId;
}
/**
* Start of the document.
*/
public void open () {}
/**
* End of the document.
*/
public void close () {}
/**
* Start of a document node.
*/
public void startDocument() throws XPathException {}
/**
* Notify the end of a document node
*/
public void endDocument() throws XPathException {}
/**
* Start of an element.
*/
public void startElement(int nameCode, int properties) throws XPathException {
String qname = namePool.getDisplayName(nameCode);
String prefix = namePool.getPrefix(nameCode);
String uri = namePool.getURI(nameCode);
try {
Element element = document.createElement(qname);
addNamespace(element, prefix, uri);
if (nextSibling != null && level == 0) {
currentNode.insertBefore(element, nextSibling);
} else {
currentNode.appendChild(element);
}
currentNode = element;
} catch (DOMException err) {
throw new XPathException(err);
}
level++;
}
private void addNamespace(Element element, String prefix, String uri) {
String attName = (prefix.isEmpty() ? "xmlns" : "xmlns:" + prefix);
element.setAttribute(attName, uri);
}
public void namespace (NamespaceBinding nsBinding, int properties) throws XPathException {
//try {
String prefix = nsBinding.getPrefix();
String uri = nsBinding.getURI();
Element element = (Element)currentNode;
if (!(uri.equals(NamespaceConstant.XML))) {
addNamespace(element, prefix, uri);
}
// } catch (DOMException err) {
// throw new XPathException(err);
// }
}
public void attribute(int nameCode, CharSequence value)
throws XPathException {
String qname = namePool.getDisplayName(nameCode);
try {
Element element = (Element)currentNode;
element.setAttribute(qname, value.toString());
if (qname.indexOf(':') >= 0) {
String prefix = namePool.getPrefix(nameCode);
String uri = namePool.getURI(nameCode);
addNamespace(element, prefix, uri);
}
} catch (DOMException err) {
throw new XPathException(err);
}
}
public void startContent() throws XPathException {}
/**
* End of an element.
*/
public void endElement () throws XPathException {
if (canNormalize) {
try {
currentNode.normalize();
} catch (Throwable err) {
canNormalize = false;
} // in case it's a Level 1 DOM
}
currentNode = currentNode.getParentNode();
level--;
}
/**
* Character data.
*/
public void characters(CharSequence chars) throws XPathException
{
if (level == 0 && nextSibling == null && Whitespace.isWhite(chars)) {
return; // no action for top-level whitespace
}
try {
Text text = document.createTextNode(chars.toString());
if (nextSibling != null && level == 0) {
currentNode.insertBefore(text, nextSibling);
} else {
currentNode.appendChild(text);
}
} catch (DOMException err) {
throw new XPathException(err);
}
}
/**
* Handle a processing instruction.
*/
public void processingInstruction(String target, CharSequence data)
throws XPathException
{
try {
ProcessingInstruction pi =
document.createProcessingInstruction(target, data.toString());
if (nextSibling != null && level == 0) {
currentNode.insertBefore(pi, nextSibling);
} else {
currentNode.appendChild(pi);
}
} catch (DOMException err) {
throw new XPathException(err);
}
}
/**
* Handle a comment.
*/
public void comment(CharSequence chars) throws XPathException
{
try {
Comment comment = document.createComment(chars.toString());
if (nextSibling != null && level == 0) {
currentNode.insertBefore(comment, nextSibling);
} else {
currentNode.appendChild(comment);
}
} catch (DOMException err) {
throw new XPathException(err);
}
}
/**
* Set the attachment point for the new subtree
* @param node the node to which the new subtree will be attached
*/
public void setNode (Node node) {
if (node == null) {
return;
}
currentNode = node;
if (node.getNodeType() == Node.DOCUMENT_NODE) {
document = (Document)node;
} else {
document = currentNode.getOwnerDocument();
if (document == null) {
// which might be because currentNode() is a parentless ElementOverNodeInfo.
// we create a DocumentOverNodeInfo, which is immutable, and will cause the DOMWriter to fail
//document = new DocumentOverNodeInfo();
// TODO:CLAXON - check this
}
}
}
/**
* Set next sibling
* @param nextSibling the node, which must be a child of the attachment point, before which the new subtree
* will be created. If this is null the new subtree will be added after any existing children of the
* attachment point.
*/
public void setNextSibling(Node nextSibling) {
this.nextSibling = nextSibling;
}
}
// This Source Code Form is subject to the terms of the Mozilla Public License, v. 2.0.
// If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
// This Source Code Form is “Incompatible With Secondary Licenses”, as defined by the Mozilla Public License, v. 2.0.