WorkingSetsViewerSorter.java

/*******************************************************************************
 * Copyright (c) 2007 Spring IDE Developers
 * 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:
 *     Spring IDE Developers - initial API and implementation
 *******************************************************************************/
package org.springframework.ide.eclipse.ui.workingsets;

import org.eclipse.jface.viewers.ILabelProvider;
import org.eclipse.jface.viewers.StructuredViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerSorter;

/**
 * @author Christian Dupuis
 * @since 2.0
 */
public class WorkingSetsViewerSorter extends ViewerSorter {

	public int compare(Viewer viewer, Object e1, Object e2) {
		if (viewer instanceof StructuredViewer) {
			ILabelProvider labelProvider = (ILabelProvider) ((StructuredViewer) viewer)
					.getLabelProvider();
			String text1 = labelProvider.getText(e1);
			String text2 = labelProvider.getText(e2);
			if (text1 != null) {
				return text1.compareTo(text2);
			}
		}
		return -1;
	}

}