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Java > Open Source Codes > prefuse > controls > HoverActionControl


1 package prefuse.controls;
2
3 import java.awt.event.MouseEvent JavaDoc;
4
5 import prefuse.visual.VisualItem;
6
7 /**
8  * Control that executes an action when the mouse passes over an item.
9  *
10  * @author <a HREF="http://jheer.org">jeffrey heer</a>
11  */
12 public class HoverActionControl extends ControlAdapter {
13
14     private String JavaDoc m_action;
15    
16     /**
17      * Create a new HoverActionControl.
18      * @param action the action to run upon mouse-over. The action is run
19      * both upon entering and upon exiting the item.
20      */
21     public HoverActionControl(String JavaDoc action) {
22         m_action = action;
23     }
24     
25     /**
26      * @see prefuse.controls.Control#itemEntered(prefuse.visual.VisualItem, java.awt.event.MouseEvent)
27      */
28     public void itemEntered(VisualItem item, MouseEvent JavaDoc e) {
29         item.getVisualization().run(m_action);
30     }
31
32     /**
33      * @see prefuse.controls.Control#itemExited(prefuse.visual.VisualItem, java.awt.event.MouseEvent)
34      */
35     public void itemExited(VisualItem item, MouseEvent JavaDoc e) {
36         item.getVisualization().run(m_action);
37     }
38
39 } // end of class HoverActionControl
40
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