| <!DOCTYPE html> |
| <title>Remove the last element on the fullscreen element stack</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/testdriver.js"></script> |
| <script src="/resources/testdriver-vendor.js"></script> |
| <script src="../trusted-click.js"></script> |
| <div id="log"></div> |
| <div id="first"> |
| <div id="last"></div> |
| </div> |
| <script> |
| promise_test(async (t) => { |
| t.add_cleanup(() => { |
| if (document.fullscreenElement) { |
| return document.exitFullscreen(); |
| } |
| }); |
| const first = document.getElementById("first"); |
| const [, firstEvent] = await Promise.all([ |
| trusted_request(first), |
| fullScreenChange(), |
| ]); |
| |
| assert_equals(document.fullscreenElement, first, "fullscreen element after first request"); |
| assert_equals(firstEvent.target, first, "first fullscreenchange event target"); |
| |
| const last = document.getElementById("last"); |
| const [, secondEvent] = await Promise.all([ |
| trusted_request(last), |
| fullScreenChange(), |
| ]); |
| |
| assert_equals(document.fullscreenElement, last, "fullscreen element after second request"); |
| assert_equals(secondEvent.target, last, "second fullscreenchange event target"); |
| last.remove(); |
| // Although /last/ was removed from the top layer synchronously, /first/ remains |
| // and becomes the new fullscreen element. |
| assert_equals(document.fullscreenElement, first, "fullscreen element immediately after removal"); |
| |
| // The removal of the fullscreen element triggers exiting fullscreen, but those changes |
| // happen async when the event is fired. |
| const thirdEvent = await fullScreenChange(); |
| assert_equals(document.fullscreenElement, null, "fullscreen element after third event"); |
| assert_equals(thirdEvent.target, document, "third fullscreenchange event target"); |
| }); |
| </script> |
