WorkingSetComparator


1   /*******************************************************************************
2    * Copyright (c) 2000, 2006 IBM Corporation and others.
3    * All rights reserved. This program and the accompanying materials
4    * are made available under the terms of the Eclipse Public License v1.0
5    * which accompanies this distribution, and is available at
6    * http://www.eclipse.org/legal/epl-v10.html
7    *
8    * Contributors:
9    *     IBM Corporation - initial API and implementation
10   *******************************************************************************/
11  package org.eclipse.help.internal.workingset;
12  
13  import com.ibm.icu.text.Collator;
14  import java.util.Comparator  ;
15  
16  /**
17   * Compares two working sets by name.
18   */
19  public class WorkingSetComparator implements Comparator   {
20      private Collator fCollator = Collator.getInstance();
21  
22      /**
23       * Implements Comparator.
24       * 
25       * @see Comparator#compare(Object, Object)
26       */
27      public int compare(Object   o1, Object   o2) {
28          String   name1 = null;
29          String   name2 = null;
30  
31          if (o1 instanceof WorkingSet)
32              name1 = ((WorkingSet) o1).getName();
33  
34          if (o2 instanceof WorkingSet)
35              name2 = ((WorkingSet) o2).getName();
36  
37          if (name1 == null || name2 == null)
38              return -1;
39  
40          return fCollator.compare(name1, name2);
41      }
42  }
43

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