accessibilitydemo3.java

java 完全探索的随书源码

// AccessibilityDemo3.java

import javax.accessibility.*;

import javax.swing.*;

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

class AccessibilityDemo3 extends JFrame
{
   AccessibilityDemo3 (String title)
   {
      super (title);

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

      JPanel p = new JPanel ();
      p.setPreferredSize (new Dimension (200, 50));
      JButton jb = new JButton ("OK");
      p.add (jb);

      getContentPane ().add (p);

      pack ();
      setVisible (true);
   }

   public static void main (String [] args)
   {
      AccessibilityDemo3 ad3;
      ad3 = new AccessibilityDemo3 ("Accessibility Demo3");

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

      ad3.dumpComponentInfo (ad3.getAccessibleContext ());
   }

   void dumpComponentInfo (AccessibleContext ac)
   {
      AccessibleComponent ax = ac.getAccessibleComponent ();

      if (ax != null)
      {
          String s = ac.getAccessibleName ();

          if (s != null && s.equals ("OK"))
          {
              System.out.println ("Background color: " +
                                  ax.getBackground ());

              System.out.println ("Cursor: " +
                                  ax.getCursor ());

              Cursor c;
              c = Cursor.getPredefinedCursor (Cursor.WAIT_CURSOR);
              ax.setCursor (c);

              System.out.println ("Foreground color: " +
                                  ax.getForeground ());

              System.out.println ("Location: " +
                                  ax.getLocationOnScreen ());
          }
      }

      int nChildren = ac.getAccessibleChildrenCount ();

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