SwingSafeRunnable


1   package snow.utils.gui;
2   
3   import javax.swing.SwingUtilities  ;
4   
5   
6   /** a runnable wrapper class which guaranties that
7    *  the runnable given runs in the dispatch thread.
8    *
9    *  BE CAREFUL, the word "Safe" is excessive. It just assure
10   *   that you don't become exceptions if you try to naively
11   *   perform a SwingUtilities.invokeAndWait from the event dispatch thread.
12   *
13   *   It's always better if you exactely know in which thread
14   *   you're running.
15   */
16  public class SwingSafeRunnable implements Runnable   {
17  
18      Runnable   runnable;
19      boolean wait;
20  
21      /** @param theRunnable is the runnable to execute
22       * @param doWait true if we must
23       */
24      public SwingSafeRunnable(Runnable   theRunnable, boolean doWait) {
25          runnable = theRunnable;
26          wait = doWait;
27      }
28  
29      public void run()
30      {
31        try
32        {
33          if(SwingUtilities.isEventDispatchThread()) {
34              runnable.run();
35          }
36          else
37          {
38              if(wait)
39              {
40                  try {
41                      SwingUtilities.invokeAndWait(runnable);
42                  }
43                  catch (InterruptedException   iE)
44                  {
45                    iE.printStackTrace();
46                  }
47                  catch (java.lang.reflect.InvocationTargetException   iTE)
48                  {
49                    iTE.printStackTrace();
50                  }
51              }
52              else
53                  SwingUtilities.invokeLater(runnable);
54          }
55        }
56        catch(Exception   e)
57        {
58           // ### test
59           e.printStackTrace();
60           throw new RuntimeException  (e.getMessage());
61        }
62      }
63  
64  
65  }
66
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