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Java > Open Source Codes > prefuse > data > event > ExpressionListener


1 package prefuse.data.event;
2
3 import java.util.EventListener JavaDoc;
4
5 import prefuse.data.expression.Expression;
6
7 /**
8  * Listener interface for monitoring changes to an Expression instance.
9  *
10  * @author <a HREF="http://jheer.org">jeffrey heer</a>
11  */
12 public interface ExpressionListener extends EventListener JavaDoc {
13
14     /**
15      * Notification that an Expression instance has been modified in some way.
16      * @param expr the modified expression
17      */
18     public void expressionChanged(Expression expr);
19     
20 } // end of interface ExpressionListener
21
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