// retoor <retoor@molodetz.nl>
export class LoadingButton {
  static setLoading(button, on) {
    if (!button) {
      return;
    }
    button.classList.toggle("is-loading", on);
    button.disabled = on;
    button.setAttribute("aria-busy", on ? "true" : "false");
    const existing = button.querySelector(".spinner");
    if (on && !existing) {
      const spinner = document.createElement("span");
      spinner.className = "spinner";
      spinner.setAttribute("aria-hidden", "true");
      button.prepend(spinner);
    } else if (!on && existing) {
      existing.remove();
    }
  }
}