accessibilitydemo1.java

java 完全探索的随书源码

// AccessibilityDemo1.java

import javax.accessibility.*;

import javax.swing.*;

import java.awt.event.*;

class AccessibilityDemo1 extends JFrame implements ActionListener
{
   JButton jb;

   AccessibilityDemo1 (String title)
   {
      super (title);

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

      AccessibleContext ac = getAccessibleContext ();
      ac.setAccessibleDescription ("Accessibility Demo1 description.");

      ac = getRootPane ().getAccessibleContext ();
      ac.setAccessibleName ("Root pane");
      ac.setAccessibleDescription ("Root pane description");

      ac = getGlassPane ().getAccessibleContext ();
      ac.setAccessibleName ("Glass pane");
      ac.setAccessibleDescription ("Glass pane description");

      ac = getLayeredPane ().getAccessibleContext ();
      ac.setAccessibleName ("Layered pane");
      ac.setAccessibleDescription ("Layered pane description");

      ac = getContentPane ().getAccessibleContext ();
      ac.setAccessibleName ("Content pane");
      ac.setAccessibleDescription ("Content pane description");

      JPanel p = new JPanel ();
      ac = p.getAccessibleContext ();
      ac.setAccessibleName ("Panel");
      ac.setAccessibleDescription ("Panel description");

      jb = new JButton ("Press Me");
      jb.addActionListener (this);
      jb.setToolTipText ("Press me for accessibility information.");
      p.add (jb);

      getContentPane ().add (p);

      setSize (200, 75);
      setVisible (true);
   }

   public void actionPerformed (ActionEvent e)
   {
      dumpInfo (getAccessibleContext ());
   }

   void dumpInfo (AccessibleContext ac)
   {
      System.out.println ("Name = " + ac.getAccessibleName ());
      System.out.println ("Description = " +
                          ac.getAccessibleDescription ());

      int nChildren = ac.getAccessibleChildrenCount ();

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

   public static void main (String [] args)
   {
      new AccessibilityDemo1 ("Accessibility Demo1");
   }
}