package org.lsst.ccs.plugin.jas3.console;
   
   import java.awt.Component;
   import java.awt.Point;
   import java.awt.event.ActionEvent;
   import java.awt.event.ActionListener;
   import java.io.PrintWriter;
   import javax.swing.JMenuItem;
   import javax.swing.JOptionPane;
  import javax.swing.JPopupMenu;
  import org.freehep.application.Application;
  import org.freehep.application.mdi.PageEvent;
  import org.freehep.application.mdi.PageListener;
  import org.freehep.swing.popup.HasPopupItems;
  import org.lsst.ccs.bus.BusMessage;
  import org.lsst.ccs.bus.MessagingFactory;
  import org.lsst.ccs.bus.StatusListener;
  
  /**
   * New implementation of basic tracer. This version based vaguely on Bernard's
   * StatusTestComponent.
   *
   * @author tonyj
   */
  public class Tracer implements PageListener, StatusListener, HasPopupItems {
      private final MessagingFactory factory;
      private PrintWriter out;
      private MessageFilter filter = new RegularExpressionMessageFilter();
  
      Tracer(MessagingFactory factory) {
          this.factory = factory;
      }
  
      @Override
      public void onStatus(BusMessage bm) {
          if (filter == null || filter.accept(bm)) out.println(bm);
      }
  
      @Override
      public void pageChanged(PageEvent pe) {
          if (pe.getID() == PageEvent.PAGECLOSED) {
              factory.removeStatusListener(this);
          }
      }
  
      void start(PrintWriter out) {
          this.out = out;
          factory.addStatusListener(this);
      }
  
      @Override
      public JPopupMenu modifyPopupMenu(JPopupMenu menu, final Component source, Point p) {
          JMenuItem item = new JMenuItem("Set Filter...");
          item.addActionListener(new ActionListener()
          {
              @Override
              public void actionPerformed(ActionEvent e) {
                  RegularExpressionMessageFilter regexFilter = (RegularExpressionMessageFilter) filter;
                  RegularExpressionMessageFilterPanel fp = new RegularExpressionMessageFilterPanel(regexFilter);
                  int rc = JOptionPane.showConfirmDialog(Application.getApplication(), fp, "Select Filter", JOptionPane.OK_CANCEL_OPTION);
                  if (rc == JOptionPane.OK_OPTION) {
                      fp.apply();
                  }
              }
              
          });
          menu.insert(item,0);
          return menu;
      }
  }