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/*****************************************************************************
* Copyright (c) 2012 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.infra.table.properties.provider;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.EReference;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.papyrus.infra.table.instance.papyrustableinstance.PapyrusTableInstance;
import org.eclipse.papyrus.infra.widgets.providers.AbstractStaticContentProvider;
public class PasteElementContainmentFeatureContentProvider extends AbstractStaticContentProvider implements ITreeContentProvider {
private PapyrusTableInstance contextTable;
public PasteElementContainmentFeatureContentProvider(PapyrusTableInstance contextTable) {
this.contextTable = contextTable;
}
public EClass[] getElements() {
EObject context = contextTable.getTable().getContext();
if(context == null) {
return new EClass[0];
}
EClass contextMetaclass = context.eClass();
return new EClass[]{ contextMetaclass };
}
public EReference[] getChildren(Object parentElement) {
if(parentElement instanceof EClass) {
EClass contextMetaclass = (EClass)parentElement;
List<EReference> result = new LinkedList<EReference>();
for(EReference reference : contextMetaclass.getEAllReferences()) {
if(reference.isContainment() && reference.getUpperBound() != 1) {
result.add(reference);
}
}
return result.toArray(new EReference[result.size()]);
}
return new EReference[0];
}
public Object getParent(Object element) {
if(element instanceof EReference) {
return ((EReference)element).getEContainingClass();
}
return null;
}
public boolean hasChildren(Object element) {
return getChildren(element).length > 0;
}
}
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