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/*****************************************************************************
* Copyright (c) 2010 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.customization.properties.providers;
import java.util.LinkedHashSet;
import java.util.Set;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.facet.infra.browser.uicore.CustomizableModelContentProvider;
import org.eclipse.emf.facet.infra.browser.uicore.CustomizationManager;
import org.eclipse.papyrus.customization.properties.Activator;
import org.eclipse.papyrus.views.properties.contexts.Context;
import org.eclipse.papyrus.views.properties.util.PropertiesUtil;
/**
* The customization editor's content provider. Based on the EMF Facet
* customizable content provider,
*
* @author Camille Letavernier
*/
public class ContextContentProvider extends CustomizableModelContentProvider {
private CustomizationManager customizationManager = Activator.getDefault().getCustomizationManager();
/**
* Constructor.
*/
public ContextContentProvider() {
super(Activator.getDefault().getCustomizationManager());
}
/**
* @return the CustomizationManager used by this Content provider
*/
public CustomizationManager getCustomizationManager() {
return customizationManager;
}
/**
* @param inputElement
* : A ResourceSet
* @return The root EObjects from the input ResourceSet
*/
@Override
public EObject[] getRootElements(Object inputElement) {
if(inputElement instanceof ResourceSet) {
ResourceSet resourceSet = (ResourceSet)inputElement;
if(resourceSet.getResources().isEmpty()) {
return null;
}
Set<EObject> elements = new LinkedHashSet<EObject>();
elements.addAll(resourceSet.getResources().get(0).getContents());
Set<Context> allContexts = new LinkedHashSet<Context>();
for(EObject element : elements) {
if(element instanceof Context) {
allContexts.addAll(PropertiesUtil.getDependencies((Context)element));
}
}
elements.addAll(allContexts);
return elements.toArray(new EObject[elements.size()]);
}
return null;
}
@Override
public boolean hasChildren(Object element) {
return getChildren(element).length > 0;
}
}
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