public void perform(ActionEvent evt) {
   if (Main.getWindow() != null) {
     // Hide window ASAP
     Main.getWindow().setVisible(false);
   }
   Main.exit(0);
 }
 /* (non-Javadoc)
  * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
  */
 public void actionPerformed(final ActionEvent e) {
   // no thread, nothing requires long execution time and a SwingWorker is not adapted
   if (e.getActionCommand().equals(EVENT_EXIT)) {
     Main.exit(0);
   } else if (e.getActionCommand().equals(EVENT_OPEN_FILE)) {
     JajukFileChooser jfchooser = new JajukFileChooser();
     int returnVal = jfchooser.showOpenDialog(Main.getWindow());
     if (returnVal == JFileChooser.APPROVE_OPTION) {
       java.io.File[] files = jfchooser.getSelectedFiles();
       FIFO.getInstance().clear(); // stop all currently played tracks
       ArrayList alFiles = new ArrayList();
       for (int i = 0; i < files.length; i++) {
         if (Util.getExtension(files[i]).equals(EXT_PLAYLIST)) {
           BasicPlaylistFile bplf = new BasicPlaylistFile(files[i]);
           try {
             alFiles.addAll(bplf.getBasicFiles());
           } catch (JajukException je) {
             Log.error(je);
           }
         } else {
           alFiles.add(new BasicFile(files[i]));
         }
       }
       FIFO.getInstance().push(alFiles, false);
     }
   } else if (e.getActionCommand().equals(EVENT_REPEAT_MODE_STATUS_CHANGED)) {
     boolean bContinue = ConfigurationManager.getBoolean(CONF_STATE_CONTINUE);
     if (bContinue) {
       // Repeat and continue can't be set together, so deselect repeat mode
       ConfigurationManager.setProperty(CONF_STATE_CONTINUE, Boolean.toString(!bContinue));
       JajukJMenuBar.getInstance().jcbmiContinue.setSelected(false);
       CommandJPanel.getInstance().jbContinue.setBorder(BorderFactory.createRaisedBevelBorder());
     }
     boolean b = ConfigurationManager.getBoolean(CONF_STATE_REPEAT);
     ConfigurationManager.setProperty(CONF_STATE_REPEAT, Boolean.toString(!b));
     JajukJMenuBar.getInstance().jcbmiRepeat.setSelected(!b);
     if (!b == true) { // enabled button
       CommandJPanel.getInstance().jbRepeat.setBorder(BorderFactory.createLoweredBevelBorder());
       // set the forced repeat track to repeat over it even with others tracks in the fifo
       FIFO.getInstance().forceRepeat(FIFO.getInstance().getCurrentFile());
     } else { // disable repeat mode
       CommandJPanel.getInstance().jbRepeat.setBorder(BorderFactory.createRaisedBevelBorder());
       FIFO.getInstance().forceRepeat(null); // reset forced
     }
   } else if (e.getActionCommand().equals(EVENT_SHUFFLE_MODE_STATUS_CHANGED)) {
     boolean b = ConfigurationManager.getBoolean(CONF_STATE_SHUFFLE);
     ConfigurationManager.setProperty(CONF_STATE_SHUFFLE, Boolean.toString(!b));
     JajukJMenuBar.getInstance().jcbmiShuffle.setSelected(!b);
     if (!b == true) { // enabled button
       CommandJPanel.getInstance().jbRandom.setBorder(BorderFactory.createLoweredBevelBorder());
       FIFO.getInstance().shuffle(); // shuffle current selection
     } else {
       CommandJPanel.getInstance().jbRandom.setBorder(BorderFactory.createRaisedBevelBorder());
     }
   } else if (e.getActionCommand().equals(EVENT_CONTINUE_MODE_STATUS_CHANGED)) {
     boolean bRepeat = ConfigurationManager.getBoolean(CONF_STATE_REPEAT);
     if (bRepeat) {
       // Repeat and continue can't be set together, so deselect repeat mode
       ConfigurationManager.setProperty(CONF_STATE_REPEAT, Boolean.toString(!bRepeat));
       JajukJMenuBar.getInstance().jcbmiRepeat.setSelected(false);
       CommandJPanel.getInstance().jbRepeat.setBorder(BorderFactory.createRaisedBevelBorder());
     }
     boolean b = ConfigurationManager.getBoolean(CONF_STATE_CONTINUE);
     ConfigurationManager.setProperty(CONF_STATE_CONTINUE, Boolean.toString(!b));
     JajukJMenuBar.getInstance().jcbmiContinue.setSelected(!b);
     if (!b == true) { // enabled button
       CommandJPanel.getInstance().jbContinue.setBorder(BorderFactory.createLoweredBevelBorder());
     } else {
       CommandJPanel.getInstance().jbContinue.setBorder(BorderFactory.createRaisedBevelBorder());
     }
   } else if (e.getActionCommand().equals(EVENT_INTRO_MODE_STATUS_CHANGED)) {
     boolean b =
         Boolean.valueOf(ConfigurationManager.getProperty(CONF_STATE_INTRO)).booleanValue();
     ConfigurationManager.setProperty(CONF_STATE_INTRO, Boolean.toString(!b));
     JajukJMenuBar.getInstance().jcbmiIntro.setSelected(!b);
     if (!b == true) { // enabled button
       CommandJPanel.getInstance().jbIntro.setBorder(BorderFactory.createLoweredBevelBorder());
     } else {
       CommandJPanel.getInstance().jbIntro.setBorder(BorderFactory.createRaisedBevelBorder());
     }
   } else if (e.getActionCommand().equals(EVENT_VIEW_SHOW_STATUS_CHANGED_REQUEST)) {
     if (((JCheckBoxMenuItem) e.getSource()).isSelected()) { // show view request
       ViewManager.notify(
           EVENT_VIEW_SHOW_REQUEST,
           (IView) JajukJMenuBar.getInstance().hmCheckboxView.get(e.getSource()));
     } else {
       ViewManager.notify(
           EVENT_VIEW_CLOSE_REQUEST,
           (IView) JajukJMenuBar.getInstance().hmCheckboxView.get(e.getSource()));
     }
   } else if (EVENT_HELP_REQUIRED.equals(e.getActionCommand())) {
     PerspectiveManager.setCurrentPerspective(PERSPECTIVE_NAME_HELP);
   }
 }