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/*****************************************************************************
* Copyright (c) 2011 CEA LIST.
*
* 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:
* Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
*****************************************************************************/
package org.eclipse.papyrus.uml.tools.providers;
import java.util.Iterator;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.papyrus.infra.emf.utils.EMFHelper;
import org.eclipse.papyrus.infra.services.labelprovider.service.IFilteredLabelProvider;
import org.eclipse.uml2.uml.Element;
/**
* The Modisco customizable label provider doesn't handle standard EObjects,
* while standard EMF label providers don't handle MoDisco elements.
*
* This label provider aggregates both a MoDisco label provider and an
* EMF Label Provider.
*
* @author Camille Letavernier
*/
public class UMLFilteredLabelProvider extends UMLLabelProvider implements IFilteredLabelProvider {
public boolean accept(IStructuredSelection selection) {
if(selection.isEmpty()) {
return false;
}
Iterator<?> iterator = selection.iterator();
while(iterator.hasNext()) {
Object element = iterator.next();
if(!accept(element)) {
return false;
}
}
return true;
}
public boolean accept(Object element) {
if(element instanceof IStructuredSelection) {
return accept((IStructuredSelection)element);
}
//The element is a UML Element or can be adapted to an EObject
EObject eObject = EMFHelper.getEObject(element);
if(eObject == null) {
return false;
}
if(eObject instanceof Element) {
return true;
}
return false;
}
}
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