core/plugins/org.eclipse.dltk.ui/src/org/eclipse/dltk/internal/ui/search/WorkingSetsComparator.java

/*******************************************************************************
 * Copyright (c) 2000, 2017 IBM Corporation and others.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 * 
 * SPDX-License-Identifier: EPL-2.0
 *
 *******************************************************************************/
package org.eclipse.dltk.internal.ui.search;

import java.util.Comparator;

import org.eclipse.ui.IWorkingSet;

import com.ibm.icu.text.Collator;

class WorkingSetsComparator implements Comparator {

	private Collator fCollator= Collator.getInstance();

	@Override
	public int compare(Object o1, Object o2) {
		String name1= null;
		String name2= null;

		if (o1 instanceof IWorkingSet[]) {
			IWorkingSet[] workingSets= (IWorkingSet[])o1;
			if (workingSets.length > 0)
				name1= workingSets[0].getLabel();
		}

		if (o2 instanceof IWorkingSet[]) {
			IWorkingSet[] workingSets= (IWorkingSet[])o1;
			if (workingSets.length > 0)
				name2= workingSets[0].getLabel();
		}

		return fCollator.compare(name1, name2);
	}
}