svoid uploadImageFileDialog(File imageFile) {
  if (!isFile(imageFile)) ret;
  
  JTextField tf = jTextField();
  showFormTitled("Upload Image",
    "Image file", new JFilePathLabel(imageFile),
    "Image title (optional)", tf, func {
      disableSubmitButton(getFrame(tf));
      thread "Upload Image" {
        try {
          messageBox("Image uploaded as " + uploadImage(imageFile,
            getTextTrim(tf)));
          disposeFrame(tf);
        } catch e {
          enableSubmitButton(getFrame(tf));
          messageBox(e);
        }
      }
      false;
    });
}