| <!DOCTYPE html> |
| <title>Re-requesting fullscreen doesn't fail but doesn't change order</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="/common/top-layer.js"></script> |
| |
| <div class="elements"> |
| <div id="A">Element A</div> |
| <div id="B">Element B</div> |
| </div> |
| |
| <style> |
| .elements > div { |
| width: 200px; |
| height: 200px; |
| } |
| #A { background: blue; } |
| #B { background: green; } |
| </style> |
| |
| <script> |
| promise_test(async (t) => { |
| t.add_cleanup(async () => { |
| while (document.fullscreenElement) |
| await document.exitFullscreen(); |
| }); |
| document.onfullscreenerror = () => assert_unreached('fullscreenerror should not happen'); |
| const A = document.getElementById('A'); |
| const B = document.getElementById('B'); |
| assert_true(!isTopLayer(A) && !isTopLayer(B)); |
| await blessTopLayer(document.body); |
| await A.requestFullscreen(); |
| assert_equals(document.fullscreenElement, A, 'first A request'); |
| assert_true(isTopLayer(A), 'A top layer'); |
| await blessTopLayer(A); |
| try { |
| await B.requestFullscreen(); |
| } catch (error) { |
| assert_unreached('The second call to requestFullscreen rejected - it should be possible to put siblings into fullscreen together'); |
| } |
| assert_equals(document.fullscreenElement, B, 'B request'); |
| assert_true(isTopLayer(B), 'B top layer'); |
| assert_true(isTopLayer(A), 'A still top layer'); |
| await blessTopLayer(B); |
| await A.requestFullscreen(); |
| assert_true(isTopLayer(A), 'A is still top layer'); |
| assert_true(isTopLayer(B), 'B is still top layer'); |
| assert_equals(document.fullscreenElement, A, 'A is moved back to the top of the top layer stack'); |
| assert_equals(document.elementFromPoint(10, 10), A, 'A should be topmost'); |
| |
| await document.exitFullscreen(); |
| assert_equals(document.fullscreenElement, B, 'B goes back to being the fullscreen element'); |
| assert_true(isTopLayer(B), 'B is still top layer'); |
| assert_false(isTopLayer(A), 'A is no longer top layer'); |
| await document.exitFullscreen(); |
| assert_equals(document.fullscreenElement, null, 'Both closed'); |
| assert_false(isTopLayer(A), 'A is no longer top layer'); |
| assert_false(isTopLayer(B), 'B is no longer top layer'); |
| }, 'Requesting fullscreen on A, then B, then A'); |
| </script> |
