/*******************************************************************************
 * Copyright (c) 2007- VTT Technical Research Centre of Finland.
 * 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:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.proconf.g3d.tools;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import org.eclipse.jface.viewers.ISelectionChangedListener;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.SelectionChangedEvent;
import org.simantics.layer0.utils.viewpoints.TraversalPath;
import org.simantics.proconf.browsing.MutableCachedGraphTreeNode;

/**
 * SelectionListener for OntologyExplorer
 * 
 * Returns Selection as TraversalPath
 * 
 * @author Marko Luukkainen
 *
 */
public abstract class OEPathSelectionListener implements ISelectionChangedListener{
	@SuppressWarnings("unchecked")
	public void selectionChanged(SelectionChangedEvent event) {
		IStructuredSelection s = (IStructuredSelection)event.getSelection();
		List<TraversalPath> paths = new ArrayList<TraversalPath>();
		Iterator<MutableCachedGraphTreeNode> i = s.iterator();
		while(i.hasNext()) {
			MutableCachedGraphTreeNode node = i.next();
			TraversalPath path = (TraversalPath)node.getObject();
			paths.add(path);
		}	
		pathSelectionUpdated(paths);
	}
	
	protected abstract void pathSelectionUpdated(List<TraversalPath> paths);
}