/*******************************************************************************
* 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;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.jst.jsf.common.metadata.Trait;
import org.eclipse.jst.jsf.common.metadata.internal.IMetaDataDomainContext;
import org.eclipse.jst.jsf.common.metadata.query.internal.MetaDataQueryContextFactory;
import org.eclipse.jst.jsf.common.metadata.query.internal.MetaDataQueryFactory;
import org.eclipse.jst.jsf.common.metadata.query.internal.taglib.ITaglibDomainMetaDataQuery;
import org.eclipse.jst.jsf.core.internal.tld.CMUtil;
import org.eclipse.jst.pagedesigner.dtmanager.dtinfo.DTInfo;
import org.eclipse.jst.pagedesigner.utils.StructuredModelUtil;
import org.eclipse.wst.xml.core.internal.provisional.contentmodel.CMDocType;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMNode;
import org.w3c.dom.Element;
/**
* Default IDTInfoFactory implementation.
*
* <p><b>Provisional API - subject to change</b></p>
*
* @author Ian Trimble - Oracle
*/
public class DefaultDTInfoFactory implements IDTInfoFactory {
/**
* Key (in metadata) of IDTInfo trait.
*/
public static final String DTINFO_TRAIT_KEY = "dt-info"; //$NON-NLS-1$
/*
* (non-Javadoc)
* @see org.eclipse.jst.pagedesigner.dtmanager.internal.provisional.IDTInfoFactory#getDTInfo(org.w3c.dom.Element)
*/
public IDTInfo getDTInfo(final Element element) {
IDTInfo dtInfo = null;
final String nsURI = getURI(element);
if (nsURI != null) {
final IFile file = getFile(element);
if (file != null) {
final IMetaDataDomainContext context = MetaDataQueryContextFactory.getInstance().createTaglibDomainModelContext(file);
final ITaglibDomainMetaDataQuery query = MetaDataQueryFactory.getInstance().createQuery(context);
if (query != null) {
final Trait trait = query.getQueryHelper().getTrait(nsURI, element.getLocalName(), DTINFO_TRAIT_KEY);
if (trait != null) {
final DTInfo dtInfoModelObject = (DTInfo)trait.getValue();
if (dtInfoModelObject != null) {
dtInfo = new DefaultDTInfo(dtInfoModelObject, trait);
}
}
}
}
}
return dtInfo;
}
private String getURI(Element element) {
String uri = CMUtil.getElementNamespaceURI(element);
// give the content model priority
if (uri == null)
{
uri = element.getNamespaceURI();
}
if (uri == null) //may occur when taglib not setup correctly or incomplete tag elements
return null;
if (uri.equals("jsp")) //$NON-NLS-1$
uri = CMDocType.JSP11_DOC_TYPE;
if (uri.equals("html")) //$NON-NLS-1$
uri = CMDocType.HTML_DOC_TYPE;
return uri;
}
/**
* Gets the IProject instance that contains the model of the specified
* Element.
*
* @param element Element instance.
* @return IProject instance that contains the model of the specified
* Element.
*/
protected IProject getProject(final Element element) {
IProject project = null;
if (element instanceof IDOMNode) {
final IDOMModel model = ((IDOMNode)element).getModel();
if (model != null) {
project = StructuredModelUtil.getProjectFor(model);
}
}
return project;
}
/**
* Gets the IFile of the specified
* Element.
*
* @param element Element instance.
* @return IFile instance that contains the specified
* Element.
*/
protected IFile getFile(final Element element) {
IFile file = null;
if (element instanceof IDOMNode) {
final IDOMModel model = ((IDOMNode)element).getModel();
if (model != null) {
file = StructuredModelUtil.getFileFor(model);
}
}
return file;
}
}