Re: dynamic tool tip text

From:
"John B. Matthews" <nospam@nospam.invalid>
Newsgroups:
comp.lang.java.programmer
Date:
Fri, 19 Mar 2010 20:46:33 -0400
Message-ID:
<nospam-123D72.20463319032010@news.aioe.org>
In article <2phbocyvru.fsf@shell.xmission.com>,
 Jim Janney <jjanney@shell.xmission.com> wrote:

The following code makes it work correctly in the L&Fs I've tried it with

   JComboBox b = new JComboBox(items);
   final MouseListener tooltipListener = new MouseAdapter() {
       @Override
       public void mouseEntered(MouseEvent me) {
           JComponent c = (JComponent)me.getSource();
           if (me.isAltDown())
               c.setToolTipText("ALT is pressed");
           else
               c.setToolTipText("ALT isn't pressed!");
        }
   };
   b.addMouseListener(tooltipListener);
   for (Component c : b.getComponents()) {
     if (c instanceof JComponent) {
       c.addMouseListener(tooltipListener);
     }
   }
   b.addContainerListener(new ContainerAdapter() {
     @Override
     public void componentAdded(ContainerEvent event) {
       if (event.getChild() instanceof JComponent) {
         event.getChild().addMouseListener(tooltipListener);
       }
     }
   });
   add(b);

The ContainerListener is only needed if you change the L&F
dynamically: it adds the tooltip listener to the new UI components.


Thank you for this followup; it works correctly on Mac OS X with all
supplied L&Fs.

--
John B. Matthews
trashgod at gmail dot com
<http://sites.google.com/site/drjohnbmatthews>

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