/*
* Copyright (c) 2002-2010 Gargoyle Software 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 com.gargoylesoftware.htmlunit.javascript.host.xml;
import org.w3c.dom.NamedNodeMap;
import com.gargoylesoftware.htmlunit.html.DomAttr;
import com.gargoylesoftware.htmlunit.html.DomElement;
import com.gargoylesoftware.htmlunit.html.DomNode;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.gargoylesoftware.htmlunit.javascript.SimpleScriptable;
import com.gargoylesoftware.htmlunit.javascript.host.Document;
import com.gargoylesoftware.htmlunit.javascript.host.DocumentFragment;
import com.gargoylesoftware.htmlunit.javascript.host.Element;
import com.gargoylesoftware.htmlunit.javascript.host.Node;
import com.gargoylesoftware.htmlunit.util.StringUtils;
/**
* A JavaScript object for XMLSerializer.
*
* @version $Revision: 5301 $
* @author Ahmed Ashour
* @author Darrell DeBoer
*/
public class XMLSerializer extends SimpleScriptable {
private static final long serialVersionUID = -934136191731299896L;
/**
* JavaScript constructor.
*/
public void jsConstructor() {
// Empty.
}
/**
* The subtree rooted by the specified element is serialized to a string.
* @param root the root of the subtree to be serialized (this may be any node, even a document)
* @return the serialized string
*/
public String jsxFunction_serializeToString(Node root) {
if (root instanceof Document) {
root = ((Document) root).jsxGet_documentElement();
}
else if (root instanceof DocumentFragment) {
root = root.jsxGet_firstChild();
}
if (root instanceof Element) {
final StringBuilder buffer = new StringBuilder();
final boolean isIE = getBrowserVersion().isIE();
toXml(1, root.getDomNodeOrDie(), buffer, isIE);
if (isIE) {
buffer.append('\r').append('\n');
}
return buffer.toString();
}
if (root == null) {
return "";
}
return root.<DomNode>getDomNodeOrDie().asXml();
}
private void toXml(final int indent, final DomNode node, final StringBuilder buffer, final boolean isIE) {
String nodeName = node.getNodeName();
if (!isIE && (node.getPage() instanceof HtmlPage)) {
nodeName = nodeName.toUpperCase();
}
buffer.append('<').append(nodeName);
if (node.getNamespaceURI() != null && node.getPrefix() != null) {
boolean sameNamespace = false;
for (DomNode parentNode = node.getParentNode(); parentNode instanceof DomElement;
parentNode = parentNode.getParentNode()) {
if (node.getNamespaceURI().equals(parentNode.getNamespaceURI())) {
sameNamespace = true;
}
}
if (node.getParentNode() == null || !sameNamespace) {
((DomElement) node).setAttribute("xmlns:" + node.getPrefix(), node.getNamespaceURI());
}
}
final NamedNodeMap attributesMap = node.getAttributes();
for (int i = 0; i < attributesMap.getLength(); i++) {
final DomAttr attrib = (DomAttr) attributesMap.item(i);
buffer.append(' ').append(attrib.getQualifiedName()).append('=')
.append('"').append(attrib.getValue()).append('"');
}
boolean startTagClosed = false;
for (final DomNode child : node.getChildren()) {
if (!startTagClosed) {
buffer.append('>');
startTagClosed = true;
}
switch (child.getNodeType()) {
case Node.ELEMENT_NODE:
toXml(indent + 1, child, buffer, isIE);
break;
case Node.TEXT_NODE:
String value = child.getNodeValue();
value = StringUtils.escapeXmlChars(value);
if (isIE && value.trim().length() == 0) {
buffer.append('\r').append('\n');
final DomNode sibling = child.getNextSibling();
if (sibling != null && sibling.getNodeType() == Node.ELEMENT_NODE) {
for (int i = 0; i < indent; i++) {
buffer.append('\t');
}
}
}
else {
buffer.append(value);
}
break;
case Node.CDATA_SECTION_NODE:
case Node.COMMENT_NODE:
buffer.append(child.asXml());
break;
default:
}
}
if (!startTagClosed) {
buffer.append('/').append('>');
}
else {
buffer.append('<').append('/').append(node.getNodeName()).append('>');
}
}
}