static void selectDir(VF1<File> onSelect) {
  selectDir("Select directory", onSelect);
}

static void selectDir(S text, VF1<File> onSelect) {
  inputDirPath(text, onSelect);
}

static void selectDir(S text, File def, VF1<File> onSelect) {
  inputDirPath(text, def, onSelect);
}