public void handleToggle(ToggleEvent event) {
   MessageUtil.addInfoMessage("panel.toggled", "Status:" + event.getVisibility().name());
 }
 public void itemSelect(ItemSelectEvent event) {
   MessageUtil.addInfoMessageWithoutKey(
       "Item selected",
       "Item Index:" + event.getItemIndex() + ", Series Index: " + event.getSeriesIndex());
 }
 public void handleClose(CloseEvent event) {
   MessageUtil.addInfoMessage("panel.closed", "Closed panel id:'" + event.getComponent().getId());
 }