CollectionTreeNodeContentProvider.java

/*
 * Copyright (c) 2012 Data Harmonisation Panel
 * 
 * All rights reserved. This program and the accompanying materials are made
 * available under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the License,
 * or (at your option) any later version.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution. If not, see <http://www.gnu.org/licenses/>.
 * 
 * Contributors:
 *     HUMBOLDT EU Integrated Project #030962
 *     Data Harmonisation Panel <http://www.dhpanel.eu>
 */

package eu.esdihumboldt.hale.ui.util.tree;

import java.util.Collection;

import org.eclipse.jface.viewers.TreeNode;
import org.eclipse.jface.viewers.TreeNodeContentProvider;

/**
 * {@link TreeNode} content provider that allows collections of nodes as input
 * instead of only arrays
 * 
 * @author Simon Templer
 * @partner 01 / Fraunhofer Institute for Computer Graphics Research
 * @version $Id$
 */
public class CollectionTreeNodeContentProvider extends TreeNodeContentProvider {

	/**
	 * @see TreeNodeContentProvider#getElements(Object)
	 */
	@Override
	public Object[] getElements(Object inputElement) {
		if (inputElement instanceof Collection<?>) {
			return ((Collection<?>) inputElement).toArray();
		}
		else {
			return super.getElements(inputElement);
		}
	}

}