function widgeditor_elements() {
  $type = array();

  if (user_access('use widgEditor')) {
    $type['textarea'] = array('#process' => array('widgeditor_process_textarea' => array()));
  }

  return $type;
}

function widgeditor_process_textarea($element) {
  $textareas[] = $element['#id'];

  return $element;
}