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Groups > comp.lang.java.gui > #962

PopupMenuListener event o

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  To: comp.lang.java.help,comp.
<blockquote>
<pre>
[code]
          // webAddressBox IS OF TYPE javax.swing.JComboBox

           webAddressBox.addPopupMenuListener(new PopupMenuAdapter() {

                /** @uses {@link
com.ppowell.tools.ObjectTools.SimpleBrowser.Surf} */
                final Surf surf = new
Surf(webAddressBox.getSelectedItem().toString());

                /**
                 * Perform {@link #surf} processing
                 * @param evt {@link javax.swing.event.PopupMenuEvent}
                 */
                public void
popupMenuWillBecomeInvisible(PopupMenuEvent evt) {
                    System.out.println("you selected:");
                    surf.doURLProcessing();
                }

            });

/*
 * PopupMenuAdapter.java
 *
 * Created on February 16, 2007, 11:53 AM
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package com.ppowell.tools.ObjectTools.SwingTools;

import javax.swing.event.PopupMenuEvent;
import javax.swing.event.PopupMenuListener;

/**
 * Will allow for greater flexibility by implementing {@link
javax.swing.event.PopupMenuListener}
 * @author Phil Powell
 * @version JDK 1.6.0
 */
public abstract class PopupMenuAdapter implements PopupMenuListener {

    /** Creates a new instance of PopupMenuAdapter */
    public PopupMenuAdapter() {}

    /**
     * Overrides {@link javax.swing.event.PopupMenuListener} method
popupMenuCanceled
     * @param evt {@link javax.swing.event.PopupMenuEvent}
     */
    public void popupMenuCanceled(PopupMenuEvent evt) {}
    /**
     * Overrides {@link javax.swing.event.PopupMenuListener} method
popupMenuWillBecomeInvisible
     * @param evt {@link javax.swing.event.PopupMenuEvent}
     */
    public void popupMenuWillBecomeInvisible(PopupMenuEvent evt) {}
    /**
     * Overrides {@link javax.swing.event.PopupMenuListener} method
popupMenuWillBecomeVisible
     * @param evt {@link javax.swing.event.PopupMenuEvent}
     */
    public void popupMenuWillBecomeVisible(PopupMenuEvent evt) {}

}
[/code]
</pre>
</blockquote>

This code is supposed to handle a single selection from a JComboBox
webAddressBox.  The front-end functionality of this code blocks works
just fine to the user, however, upon viewing the "behind the scenes
action", I noticed that the overriden popupMenuWillBecomeInvisible()
method within the anonymous inner class instance of PopupAdapter is
being called 2 times upon the first time you select something from
webAddressBox, 4 times the next time you select something, 8 times the
next time, and so on..

Obviously this is a tremendous waste of resources to have it call that
many times exponentially - it should only call once each time you
select something from webAddressBox, but I can't figure out how to get
that to happen.

What suggestions might you have to accomplish this? I already have an
ActionListener that runs separately from PopupMenuAdapter that handles
the user either clicking a JButton or hitting ENTER - this works just
fine.

Thanx
Phil

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Thread

PopupMenuListener event o phillip.s.powell@gmail.co.remove-dii-this - 2011-04-27 15:30 +0000
  Re: PopupMenuListener eve "Andrew Thompson" <andrew.thompson@THRWHITE.remove-dii-this> - 2011-04-27 15:30 +0000
    Re: PopupMenuListener eve phillip.s.powell@gmail.co.remove-dii-this - 2011-04-27 15:30 +0000
      Re: PopupMenuListener eve phillip.s.powell@gmail.co.remove-dii-this - 2011-04-27 15:30 +0000

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