Making JButton not respond when hour glass cursor

Question

Hi,
I know how to change the cursor to the hour glass one but what I want is that JButtons will not responds to clicks from an hour glass cursor. The JButtons should only respond to clicks from the normal cursor.
Does anyone know how to do this?
Thanks,
Jim

Answer 1

Below is a solution for JDK 1.4 without threading.
In the event handler of ActionLock the following happens:
1. disable the button.
2. repaint the button using paintImmediately().
3. perform the search.
4. post an "enable button" event on the event dispatching queue using invokeLater().
5. handle possible clicks during the search. They are ignored since the button is disabled.
6. the "enable button" event is handled on the event dispatching thread.
Three comments:
i) if step 2 is not done the paint event triggered by disabling the button will not be handled until just before step 6. Visually the button will thus not appear disable.
ii) if step 4 is not done through invokeLater step 6 is done before step 5, thus the clicks will start new searches.
iii) focus issues are solved by making the button not focusable.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class ButtonTest
  public static void main(String[] args)
    JFrame frame = new JFrame("Button test");
    frame.getContentPane().add(new MButton(new SearchAction()));
    frame.pack();
    frame.show();
class SearchAction extends AbstractAction
  public SearchAction()
    super("Search");
  public void actionPerformed(ActionEvent e)
    try
      Thread.currentThread().sleep(3000);  // Simulate time-consuming search
    catch (InterruptedException ex)
class ActionLock implements ActionListener
  private ActionListener m_OriginalListener;
  private JButton m_button;
  public ActionLock(ActionListener listener, JButton button)
    m_OriginalListener = listener;
    m_button = button;
  public void actionPerformed(final ActionEvent e)
    m_button.setEnabled(false);
    m_button.paintImmediately(
        0, 0, m_button.getWidth(), m_button.getHeight());
    m_OriginalListener.actionPerformed(e);
    SwingUtilities.invokeLater(new Runnable()
      public void run()
        m_button.setEnabled(true);
class MButton extends JButton
  public MButton(Action action)
    super(action);
    setFocusable(false);
  public void addActionListener(ActionListener listener)
    super.addActionListener(new ActionLock(listener, this));