}
private final ReadOnlyBooleanWrapper newEventsFlag = new ReadOnlyBooleanWrapper(false);
public TimeLineController() {
//initalize repository and filteredEvents on creation
eventsRepository = new EventsRepository(historyManager.currentState());
filteredEvents = eventsRepository.getEventsModel();
InitialZoomState = new ZoomParams(filteredEvents.getSpanningInterval(),
EventTypeZoomLevel.BASE_TYPE,
Filter.getDefaultFilter(),