Facing new challenges everyday

public class PDFViewRoot extends UIViewRoot {
   
  public final static String COMPONENTY_TYPE = "studioweb.PFDView";
   
  public PDFViewRoot() {
 
  }
   
  public void encodeAll(FacesContext context) throws IOException
  {
       
    UIViewRoot root = context.getViewRoot();
    String renderKitId = root.getRenderKitId();
    RenderKitFactory renderFactory =
                (RenderKitFactory)FactoryFinder
                .getFactory(FactoryFinder.RENDER_KIT_FACTORY);
       
    RenderKit renderKit = renderFactory.
       getRenderKit(context, renderKitId);
    StringWriter stringWriter = new StringWriter();
    ResponseWriter responseWriter =
                renderKit.createResponseWriter(stringWriter,
                "text/html", "UTF-8");
       
    context.setResponseWriter(responseWriter);
    super.encodeAll(context);
    responseWriter.flush();
       
    String contentType = (String) getAttributes()
      .get("contentType");
   
    String filename = (String) getAttributes()
      .get("xsl");
       
    HttpServletResponse response = (HttpServletResponse)
      context.getExternalContext().getResponse();
       
    try {
      ByteArrayOutputStream out = convertFaceletsResponse(
         stringWriter, filename);
           
      response.setContentLength(out.size());
      response.setHeader("Pragma", "No-cache");
      response.setDateHeader("Expires", 0);
      response.setHeader("Cache-Control", "no-cache");
      response.setContentType(contentType);
      response.setHeader("Content-Disposition",
         "filename=\"listino.pdf\"");
           
      response.getOutputStream().write(out.toByteArray());
      response.getOutputStream().flush();
      out.close();
    } catch(Exception ex) {
      throw new ServiceException(ex);
    }
  }
}