browser_1087303_button_fullscreen.js

Enable keyboard shortcuts

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* eslint-disable mozilla/no-arbitrary-setTimeout */

"use strict";

add_task(async function () {

  info("Check fullscreen button existence and functionality");

  CustomizableUI.addWidgetToArea(

    "fullscreen-button",

    CustomizableUI.AREA_FIXED_OVERFLOW_PANEL

);

  registerCleanupFunction(() => CustomizableUI.reset());

  await waitForOverflowButtonShown();

  await document.getElementById("nav-bar").overflowable.show();

  let fullscreenButton = document.getElementById("fullscreen-button");

  ok(fullscreenButton, "Fullscreen button appears in Panel Menu");

  let fullscreenPromise = promiseFullscreenChange();

  fullscreenButton.click();

  await fullscreenPromise;

  ok(window.fullScreen, "Fullscreen mode was opened");

  // exit full screen mode

  fullscreenPromise = promiseFullscreenChange();

  window.fullScreen = !window.fullScreen;

  await fullscreenPromise;

  ok(!window.fullScreen, "Successfully exited fullscreen");

});

function promiseFullscreenChange() {

  return new Promise((resolve, reject) => {

    info("Wait for fullscreen change");

    let timeoutId = setTimeout(() => {

      window.removeEventListener("fullscreen", onFullscreenChange, true);

      reject("Fullscreen change did not happen within " + 20000 + "ms");

    }, 20000);

    function onFullscreenChange() {

      clearTimeout(timeoutId);

      window.removeEventListener("fullscreen", onFullscreenChange, true);

      info("Fullscreen event received");

      resolve();

    window.addEventListener("fullscreen", onFullscreenChange, true);

});