class TracingListPresenter extends RecordListPresenter {

    @Override
    public int calculateDisplayedIndex() {
        List<Tracing> tracings = tracingService.getAll();
        return tracings.isEmpty() ? HAVE_NO_RESULT : RecordListFragment.HAVE_RESULT_LIST;
    }

    @Inject public  TracingListPresenter(TracingService tracingService, TracingFormService tracingFormService, RecordService recordService);

}