public void summaryRowSelection(final ReportEvent event) {
    if (rowbandingOnGroup == false) {
      return;
    }

    if (StringUtils.isEmpty(group)) {
      final Group group = event.getReport().getGroup(event.getState().getCurrentGroupIndex());
      if (group instanceof CrosstabRowGroup) {
        final GroupBody body = group.getBody();
        if (body instanceof CrosstabColumnGroupBody) {
          if (Boolean.TRUE.equals(
              group.getAttribute(
                  AttributeNames.Crosstab.NAMESPACE, AttributeNames.Crosstab.PRINT_SUMMARY))) {
            triggerVisibleStateCrosstab(event);
          }
        }
      }
    } else {
      if (FunctionUtilities.isDefinedGroup(group, event)) {
        final Group group = event.getReport().getGroup(event.getState().getCurrentGroupIndex());
        if (Boolean.TRUE.equals(
            group.getAttribute(
                AttributeNames.Crosstab.NAMESPACE, AttributeNames.Crosstab.PRINT_SUMMARY))) {
          triggerVisibleStateCrosstab(event);
        }
      }
    }
  }
  public void groupStarted(final ReportEvent event) {
    if (rowbandingOnGroup == false) {
      return;
    }

    if (StringUtils.isEmpty(group)) {
      final Group group = event.getReport().getGroup(event.getState().getCurrentGroupIndex());
      if (group instanceof CrosstabRowGroup) {
        final GroupBody body = group.getBody();
        if (body instanceof CrosstabColumnGroupBody) {
          triggerVisibleStateCrosstab(event);
        }
      }
    } else {
      if (FunctionUtilities.isDefinedGroup(group, event)) {
        triggerVisibleStateCrosstab(event);
      }
    }
  }