public void reset() {
   Road road = edgenode.getRoad();
   if (road != null) {
     roadLink.setText(road.getName());
     roadLink.setEnabled(true);
     nodeLink.setText(road.getOtherNode(edgenode).getName());
     nodeLink.setEnabled(true);
   } else {
     roadLink.setText("null");
     roadLink.setEnabled(false);
     nodeLink.setText("null");
     nodeLink.setEnabled(false);
   }
 }
 public void actionPerformed(ActionEvent e) {
   Object source = e.getSource();
   if (source == roadLink) confd.selectObject(edgenode.getRoad());
   else if (source == nodeLink) confd.selectObject(edgenode.getRoad().getOtherNode(edgenode));
 }