accessibilitydemo6.java

java 完全探索的随书源码

// AccessibilityDemo6.java

import javax.accessibility.*;

import javax.swing.*;

import java.awt.*;
import java.awt.event.*;

import java.util.Vector;

class AccessibilityDemo6 extends JFrame
{
   AccessibilityDemo6 (String title)
   {
      super (title);

      addWindowListener (new WindowAdapter ()
                         {
                             public void windowClosing (WindowEvent e)
                             {
                                System.exit (0);
                             }
                         });

      Vector v = new Vector ();
      v.add ("First item");
      v.add ("Second item");
      v.add ("Third item");
      v.add ("Fourth item");

      JPanel p = new JPanel ();
      p.setPreferredSize (new Dimension (200, 100));
      JList jl = new JList (v);
      jl.setPreferredSize (new Dimension (100, 75));
      p.add (jl);

      getContentPane ().add (p);

      pack ();
      setVisible (true);
   }

   public static void main (String [] args)
   {
      AccessibilityDemo6 ad6;
      ad6 = new AccessibilityDemo6 ("Accessibility Demo6");

      try
      {
          Thread.sleep (5000);
      }
      catch (InterruptedException e) {}

      ad6.dumpSelectionInfo (ad6.getAccessibleContext ());
   }

   void dumpSelectionInfo (AccessibleContext ac)
   {
      AccessibleSelection as = ac.getAccessibleSelection ();

      if (as != null)
      {
          int count = as.getAccessibleSelectionCount ();

          for (int i = 0; i < count; i++)
          {
               Accessible a = as.getAccessibleSelection (i);
               AccessibleContext ac2 = a.getAccessibleContext ();
               String s = ac2.getAccessibleName ();
               System.out.println ("Name = " + s);
          }

          return;
      }

      int nChildren = ac.getAccessibleChildrenCount ();

      for (int i = 0; i < nChildren; i++)
           dumpSelectionInfo (ac.getAccessibleChild (i)
                                .getAccessibleContext ());
   }
}