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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.infra.widgets.providers;
import java.util.Collection;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
public class TreeCollectionContentProvider implements ITreeContentProvider {
private TreeCollectionContentProvider() {
}
@Override
public Object[] getChildren(Object parentElement) {
return new Object[0];
}
@Override
public Object getParent(Object element) {
return null;
}
@Override
public boolean hasChildren(Object element) {
return false;
}
public static final TreeCollectionContentProvider instance = new TreeCollectionContentProvider();
@Override
public void dispose() {
// Nothing
}
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
// Nothing
}
/**
* Converts the input List to an Array containing the same elements
*
* @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
*
* @param inputElement
* @return
* The Array containing the input elements
*/
@Override
public Object[] getElements(Object inputElement) {
if (inputElement instanceof Collection) {
return ((Collection<?>) inputElement).toArray();
} else if (inputElement instanceof Object[]) {
return (Object[]) inputElement;
}
return new Object[] {};
}
}
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