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Java > Open Source Codes > edu > rice > cs > drjava > model > RegionManagerListener


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33
34 package edu.rice.cs.drjava.model;
35
36 import edu.rice.cs.util.Lambda;
37
38 /** Any class which wants to listen to DocumentRegion events fired by a RegionManager should implement this interface
39  * and use RegionManager's addListener() method.
40  * @version $Id$
41  */
42 public interface RegionManagerListener<R extends DocumentRegion> {
43   /** Called when a region is added in a document. Must be executed in event thread.
44    * @param r the region
45    * @param index the index at which it was added
46    */
47   public void regionAdded(R r, int index);
48   
49   /** Called when a region is changed. Must be executed in event thread.
50    * @param r the region
51    * @param index the index at which it was changed
52    */
53   public void regionChanged(R r, int index);
54   
55   /** Called when a region is removed from a document. Must be executed in event thread.
56    * @param r the region
57    */
58   public void regionRemoved(R r);
59 }
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