| <!DOCTYPE html> |
| <title>Element#requestFullscreen() and Document#exitFullscreen() in iframe</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../trusted-click.js"></script> |
| <div id="log"></div> |
| <iframe allowfullscreen></iframe> |
| <script> |
| // wait for load event to avoid https://bugzil.la/1493878 |
| window.onload = function() { |
| async_test(t => { |
| const iframe = document.querySelector('iframe'); |
| const iframeDoc = iframe.contentDocument; |
| const iframeBody = iframeDoc.body; |
| |
| let count = 0; |
| document.onfullscreenchange = iframeDoc.onfullscreenchange = t.step_func(event => { |
| count++; |
| assert_between_inclusive(count, 1, 4, 'number of fullscreenchange events'); |
| // Both when entering and exiting, the fullscreenchange event is fired first |
| // on the outer document and then on the iframe's document. This is because |
| // the events are fired in animation frame tasks, which run in "frame tree" |
| // order. |
| const expected = { |
| target: count == 1 || count == 3 ? iframe : iframeBody, |
| outerFullscreenElement: count <= 2 ? iframe : null, |
| innerFullscreenElement: count <= 2 ? iframeBody : null, |
| }; |
| assert_equals(event.target, expected.target, 'event target'); |
| assert_equals(document.fullscreenElement, expected.outerFullscreenElement, 'outer fullscreenElement'); |
| assert_equals(iframeDoc.fullscreenElement, expected.innerFullscreenElement, 'inner fullscreenElement'); |
| if (count == 2) { |
| iframeDoc.exitFullscreen(); |
| } else if (count == 4) { |
| // Done, but set timeout to fail on extra events. |
| step_timeout(t.step_func_done()); |
| } |
| }); |
| document.onfullscreenerror = t.unreached_func('fullscreenerror event'); |
| iframeDoc.onfullscreenerror = t.unreached_func('iframe fullscreenerror event'); |
| |
| trusted_request(t, iframeBody, iframeBody); |
| }); |
| }; |
| </script> |
