/*******************************************************************************
* Copyright (c) 2007, 2008 Oracle 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:
* Oracle Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.jsf.taglibprocessing.attributevalues;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import org.eclipse.jst.jsf.context.resolver.structureddocument.IDOMContextResolver;
import org.eclipse.jst.jsf.context.resolver.structureddocument.internal.impl.StructuredDocumentContextResolverFactory;
import org.eclipse.jst.jsf.core.internal.JSFCorePlugin;
import org.eclipse.jst.jsf.metadataprocessors.AbstractRootTypeDescriptor;
import org.eclipse.jst.jsf.metadataprocessors.IMetaDataEnabledFeature;
import org.eclipse.jst.jsf.metadataprocessors.features.IPossibleValue;
import org.eclipse.jst.jsf.metadataprocessors.features.IPossibleValues;
import org.eclipse.jst.jsf.metadataprocessors.features.PossibleValue;
import org.eclipse.wst.css.core.internal.provisional.adapters.IStyleSheetListAdapter;
import org.eclipse.wst.css.core.internal.provisional.document.ICSSNode;
import org.eclipse.wst.css.core.internal.util.CSSClassTraverser;
import org.eclipse.wst.sse.core.internal.provisional.INodeNotifier;
import org.w3c.dom.Document;
import org.w3c.dom.stylesheets.StyleSheetList;
/**
* Represents a style class attribute type
* <p><b>Provisional API - subject to change</b></p>
*/
public class CSSClassType extends AbstractRootTypeDescriptor implements
IMetaDataEnabledFeature, IPossibleValues {
private List<IPossibleValue> _pvs;
public List<IPossibleValue> getPossibleValues() {
if (_pvs == null){
IDOMContextResolver resolver = StructuredDocumentContextResolverFactory.getInstance().getDOMContextResolver(getStructuredDocumentContext());
_pvs = getCSSClasses(resolver.getDOMDocument());
}
return _pvs;
}
private List<IPossibleValue> getCSSClasses(Document doc) {
List result = new ArrayList();
String [] names = internalGetCSSClasses(doc);
for (int i=0;i<names.length;i++){
IPossibleValue pv = new PossibleValue(names[i]);
result.add(pv);
}
return result;
}
//code duplicated from pagedesigner CSSUtils. Uses internal CSSClassTraverser
private static String[] internalGetCSSClasses(Document doc) {
Collection c = Collections.EMPTY_SET;
if (doc instanceof INodeNotifier) {
IStyleSheetListAdapter adapter = (IStyleSheetListAdapter) ((INodeNotifier) doc)
.getAdapterFor(IStyleSheetListAdapter.class);
StyleSheetList ssl = (adapter == null ? null : adapter
.getStyleSheets());
CSSClassTraverser traverser = new CSSClassTraverser();
if (ssl != null) {
for (int i = 0, numStyles = ssl.getLength(); i < numStyles; i++) {
// loop for styles (<style> and <link>)
org.w3c.dom.stylesheets.StyleSheet ss = ssl.item(i);
try {
traverser.apply((ICSSNode) ss);
} catch (ClassCastException ex) {
JSFCorePlugin.log(ex, "Unable to cast to CSS style"); //$NON-NLS-1$
}
}
c = traverser.getClassNames();
}
}
String[] result = new String[c.size()];
c.toArray(result);
return result;
}
}