How to add a progress listener to t:inputfileupload?

so far my attempt

here is the jsp part

 <h:form id="fileUploader" enctype="multipart/form-data" target="upload_target" >
            <h:panelGrid columns="4" width="100%">
                  <t:inputFileUpload id="file" value="#{FIleuploadservlet.uploadedFile}" required="true" />
                   <h:commandButton value="Submit" actionListener="#{FIleuploadservlet.uploadDirect}" onclick="setFormAction();" />
            </h:panelGrid>

managed bean...

public void uploadDirect(ActionEvent ae)
    {
        HttpServletRequest request=(HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
        HttpSession session=request.getSession();

        try
        {
        byte[] data = new byte[(int) uploadedFile.getSize()];
        uploadedFile.getInputStream().read(data, 0, (int) uploadedFile.getSize());

        System.out.println("savefile===="+uploadedFile.getName());
        File file=new File("c:\\file");
        if(!file.exists())
        {
            file.mkdirs();
        }
        FileOutputStream fileOut = new FileOutputStream("c:\\file\\lantern.avi");
        fileOut.write(data, 0, data.length);
        fileOut.flush();
        fileOut.close();


        }catch(Exception e)
   开发者_如何转开发     {
            e.printStackTrace();
        }
    }

use richfaces library. Its display is good and have a progress bar.