Returns HTML for an individual file upload widget.
$variables: An associative array containing:
function theme_file_widget($variables) {
$element = $variables['element'];
$output = '';
// The "form-managed-file" class is required for proper Ajax functionality.
$output .= '<div class="file-widget form-managed-file clearfix">';
if ($element['fid']['#value'] != 0) {
// Add the file size after the file name.
$element['filename']['#markup'] .= ' <span class="file-size">(' . format_size($element['#file']->filesize) . ')</span> ';
}
$output .= drupal_render_children($element);
$output .= '</div>';
return $output;
}