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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.util;
import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.StructuredSelection;
/**
* Utility class for Actions
*
* @author Camille Letavernier
*
*/
public class ActionUtil {
/**
* EMF can only handle collections of EObjects. However, as the
* customization plugin relies a lot on EMF Facet, we often have to handle
* objects that can be adapted to EObjects, but are not EObjects
* themselves. This method adapts a collections of such objects to their
* underlying EObjects, so that EMF can handle them.
* Objects that cannot be adapted remain as-is in the collection.
*
* @param selection
* The collection to adapt
* @return
* The adapted selection
*/
public static Collection<Object> getAdaptedSelection(Collection<? extends Object> selection) {
Collection<Object> newSelection = new LinkedList<Object>();
for(Object o : selection) {
if(o instanceof IAdaptable) {
EObject eObject = (EObject)((IAdaptable)o).getAdapter(EObject.class);
newSelection.add(eObject);
} else {
newSelection.add(o);
}
}
return newSelection;
}
/**
* EMF can only handle ISelection containing EObjects. However, as the
* customization plugin relies a lot on EMF Facet, we often have to handle
* objects that can be adapted to EObjects, but are not EObjects
* themselves. This method adapts a ISelection of such objects to their
* underlying EObjects, so that EMF can handle them.
* Objects that cannot be adapted remain as-is in the selection.
*
* @param sourceSelection
* The selection to adapt
* @return
* The adapted selection
*/
public static ISelection getAdaptedSelection(ISelection sourceSelection) {
if(sourceSelection instanceof StructuredSelection) {
StructuredSelection currentSelection = (StructuredSelection)sourceSelection;
List<Object> newSelection = new LinkedList<Object>();
Iterator<?> it = currentSelection.iterator();
while(it.hasNext()) {
Object object = it.next();
if(object instanceof IAdaptable) {
EObject eObject = (EObject)((IAdaptable)object).getAdapter(EObject.class);
if(eObject != null)
newSelection.add(eObject);
else
newSelection.add(object);
}
}
StructuredSelection selection = new StructuredSelection(newSelection);
return selection;
} else {
return sourceSelection;
}
}
}
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