/*******************************************************************************
* Copyright (c) 2004, 2005 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.html.core.internal.commentelement.handlers;
import org.eclipse.wst.xml.core.internal.commentelement.CommentElementHandler;
import org.eclipse.wst.xml.core.internal.commentelement.util.CommentElementFactory;
import org.eclipse.wst.xml.core.internal.commentelement.util.TagScanner;
import org.eclipse.wst.xml.core.internal.contentmodel.CMDocument;
import org.eclipse.wst.xml.core.internal.contentmodel.CMNamedNodeMap;
import org.eclipse.wst.xml.core.internal.contentmodel.modelquery.ModelQuery;
import org.eclipse.wst.xml.core.internal.modelquery.ModelQueryUtil;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement;
import org.eclipse.wst.xml.core.internal.provisional.document.ISourceGenerator;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
public class CommentElementHandlerForSSI implements CommentElementHandler {
public Element createElement(Document document, String data, boolean isJSPTag) {
ModelQuery modelQuery = ModelQueryUtil.getModelQuery(document);
if (modelQuery == null) {
return null;
}
CMDocument cm = modelQuery.getCorrespondingCMDocument(document);
if (cm == null) {
return null;
}
CMNamedNodeMap map = cm.getElements();
if (map == null) {
return null;
}
TagScanner scanner = new TagScanner(data, 1);
String name = scanner.nextName();
if (name == null) {
return null;
}
StringBuffer buffer = new StringBuffer(name.length() + 4);
buffer.append(SSI_PREFIX);
buffer.append(':');
buffer.append(name);
String tagName = buffer.toString();
// check if valid (defined) SSI tag or not
if (map.getNamedItem(tagName) == null) {
return null;
}
CommentElementFactory factory = new CommentElementFactory(document, isJSPTag, this);
Element element = factory.create(tagName, CommentElementFactory.IS_START);
// set attributes
String attrName = scanner.nextName();
while (attrName != null) {
String attrValue = scanner.nextValue();
Attr attr = document.createAttribute(attrName);
if (attr != null) {
if (attrValue != null)
attr.setValue(attrValue);
element.setAttributeNode(attr);
}
attrName = scanner.nextName();
}
return element;
}
public String generateStartTagContent(IDOMElement element) {
ISourceGenerator generator = element.getModel().getGenerator();
StringBuffer buffer = new StringBuffer();
buffer.append('#');
buffer.append(element.getLocalName());
NamedNodeMap attributes = element.getAttributes();
int length = attributes.getLength();
for (int i = 0; i < length; i++) {
Attr attr = (Attr) attributes.item(i);
if (attr == null) {
continue;
}
buffer.append(' ');
String attrName = generator.generateAttrName(attr);
if (attrName != null) {
buffer.append(attrName);
}
String attrValue = generator.generateAttrValue(attr);
if (attrValue != null) {
// attr name only for HTML boolean and JSP
buffer.append('=');
buffer.append(attrValue);
}
}
return buffer.toString();
}
public String generateEndTagContent(IDOMElement element) {
return null; // always empty
}
public boolean isEmpty() {
return true;
}
public boolean isCommentElement(IDOMElement element) {
if (element == null) {
return false;
}
Document document = element.getOwnerDocument();
ModelQuery modelQuery = ModelQueryUtil.getModelQuery(document);
if (modelQuery == null) {
return false;
}
CMDocument cm = modelQuery.getCorrespondingCMDocument(document);
if (cm == null) {
return false;
}
CMNamedNodeMap map = cm.getElements();
if (map == null) {
return false;
}
String prefix = element.getPrefix();
if (prefix == null || !prefix.equals(SSI_PREFIX)) {
return false;
}
String tagName = element.getTagName();
if (tagName.length() <= 4) {
return false;
}
if (map.getNamedItem(tagName) == null) {
return false;
}
else {
return true;
}
}
private static final String SSI_PREFIX = "ssi";//$NON-NLS-1$
}