public void setContainer(Container container, boolean defineProperties) {
   this.container = container;
   if (defineProperties) {
     // Prepare the container by adding all properties needed for the reports
     for (ReportDefinition type :
         (ReportDefinition[]) reportDefinition.getClass().getEnumConstants()) {
       if (!type.requiresDatabaseConnection()) {
         JRUtils.addContainerPropertiesFromReport(
             container, reportGenerator.loadTemplate(getFullPath(type)));
       }
     }
   }
 }
  public void displayReport(Filter filter, Map<String, Object> parameters) {
    // TODO make the report generation asynchronous and display the first page when it is ready
    // and not after last
    // page is ready
    currentParameters = parameters;

    // Load template
    ReportDefinition rd = (ReportDefinition) getReportSelection().getValue();
    String path = getFullPath(rd);
    jasperReport = reportGenerator.loadTemplate(path);

    // Set parameters
    Map<String, Object> params = JRUtils.createParametersFromFilter(jasperReport, filter);
    params.putAll(currentParameters);
    currentParameters.putAll(params);

    // Set datasource
    jrDataSource = null;
    if (!rd.requiresDatabaseConnection()) {
      if (container instanceof Indexed) {
        jrDataSource = new JRIndexedContainerDataSource((Indexed) container);
      } else {
        jrDataSource = new JRContainerDataSource(container);
      }
    }

    // Generate report
    reportGenerator.setShowMargins(showMargins.getValue());
    String html =
        reportGenerator.executeReportAsHtml(
            jasperReport,
            params,
            jrDataSource,
            ((WrappedHttpSession) VaadinSession.getCurrent().getSession()).getHttpSession(),
            VaadinSession.getCurrent().getLocale());
    if (html == null || "".equals(html) || (container != null && container.size() <= 0)) {
      reportArea.setValue(getMessageService().getMessage(NO_DATA_FOUND_KEY));
      exportPDF.setEnabled(false);
    } else {
      if (rd.requiresExternalScript()) {
        VaadinUtils.loadScript(REPORT_AREA_ID, html, rd.requiresExternalScript(), alreadyLoaded);

        // only load external script for the map
        alreadyLoaded = true;
      } else {
        reportArea.setValue(html);
      }
      exportPDF.setEnabled(true);
    }
  }