public void decodeSimple(FacesContext context, FileUpload fileUpload, FileItem file) {
if (file.getName().equals("")) {
fileUpload.setSubmittedValue("");
} else {
fileUpload.setSubmittedValue(new DefaultUploadedFile(file));
}
}
@Override
public void decode(FacesContext context, UIComponent component) {
FileUpload fileUpload = (FileUpload) component;
String clientId = fileUpload.getClientId(context);
MultipartRequest multipartRequest = getMultiPartRequestInChain(context);
if (multipartRequest != null) {
FileItem file = multipartRequest.getFileItem(clientId);
if (fileUpload.getMode().equals("simple")) {
decodeSimple(context, fileUpload, file);
}
}
}
/**
* Return null if no file is submitted in simple mode
*
* @param context
* @param component
* @param submittedValue
* @return
* @throws ConverterException
*/
@Override
public Object getConvertedValue(
FacesContext context, UIComponent component, Object submittedValue)
throws ConverterException {
FileUpload fileUpload = (FileUpload) component;
if (fileUpload.getMode().equals("simple")
&& submittedValue != null
&& submittedValue.equals("")) {
return null;
} else {
return submittedValue;
}
}
protected void encodeMarkup(FacesContext context, FileUpload fileUpload) throws IOException {
if (fileUpload.getMode().equals("simple")) {
ResponseWriter writer = context.getResponseWriter();
String clientId = fileUpload.getClientId(context);
writer.startElement("input", null);
writer.writeAttribute("type", "file", null);
writer.writeAttribute("id", clientId, null);
writer.writeAttribute("name", clientId, null);
if (fileUpload.getStyle() != null) {
writer.writeAttribute("style", fileUpload.getStyle(), "style");
}
if (fileUpload.getStyleClass() != null) {
writer.writeAttribute("class", fileUpload.getStyleClass(), "styleClass");
}
if (fileUpload.isDisabled()) {
writer.writeAttribute("disabled", "disabled", "disabled");
}
writer.endElement("input");
}
}