title: Jasper Report: how to customize JasperViewer so that it could only export in one format?
body: <p>our customer is loving the Jasper viewer, but we have a problem. It exports data to several different formats (PDF, Excel, CSV, HTML, etc.), but our customer only wants to export to PDF.</p>
  
  <p>How can we customize the Jasper Viewer so that the only format which our users can choose to export data is PDF?</p>