@Override public boolean onEnvironmentEvent(EnvironmentEvent event) { NullCheck.notNull(event, "event"); if (event.getType() != EnvironmentEvent.Type.REGULAR) return false; switch (event.getCode()) { case REFRESH: refresh(); return true; case INTRODUCE: return onAnnounce(); case ANNOUNCE_LINE: return onAnnounceLine(); case OK: return onOk(event); case LISTENING_FINISHED: if (event instanceof ListeningFinishedEvent) return onListeningFinishedEvent((ListeningFinishedEvent) event); return false; case MOVE_HOT_POINT: if (event instanceof MoveHotPointEvent) return onMoveHotPoint((MoveHotPointEvent) event); return false; default: return region.onEnvironmentEvent(event, hotPointX, hotPointY); } }