/**
  * @see MageUC_Developer_Bar_Panel_Interface::update(Varien_Event $event)
  */
 public function update(Varien_Event $event)
 {
     if ($event->getName() == self::EVENT_MAGE_LOG) {
         self::$_arData[] = array('message' => $event->getMessage(), 'level' => $event->getLevel(), 'file' => $event->getFile());
     }
     return;
 }