| <!DOCTYPE html> |
| <title>Document#exitFullscreen() timing</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../trusted-click.js"></script> |
| <div id="log"></div> |
| <script> |
| async_test(t => { |
| const div = document.querySelector('div'); |
| trusted_request(t, div); |
| |
| document.onfullscreenchange = t.step_func(() => { |
| // We are now in fullscreen. Exit again. |
| assert_equals(document.fullscreenElement, div); |
| document.exitFullscreen(); |
| |
| // If fullscreenchange is an animation frame event, then animation frame |
| // callbacks should be run after it is fired, before the timer callback. |
| // The resize event should fire before the fullscreenchange event. |
| const events = []; |
| const callback = t.step_func(event => { |
| // fullscreenElement should have changed before either event is fired. |
| assert_equals(document.fullscreenElement, null, `fullscreenElement in ${event.type} event`); |
| events.push(event.type); |
| if (event.type == 'fullscreenchange') { |
| step_timeout(t.unreached_func('timer callback')); |
| requestAnimationFrame(t.step_func_done(() => { |
| assert_array_equals(events, ['resize', 'fullscreenchange'], 'event order'); |
| })); |
| } |
| }); |
| document.onfullscreenchange = window.onresize = callback; |
| }); |
| }, 'Timing of fullscreenchange and resize events'); |
| </script> |
