| <!DOCTYPE html> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <!-- TODO update link --> |
| <link rel="help" href="https://www.w3.org/TR/css-view-transitions-2/"> |
| <title>Display none during transition</title> |
| </head> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| #target { |
| background-color: teal; |
| height: 100px; |
| width: 100px; |
| position: relative; |
| view-transition-name: target; |
| } |
| |
| .hidden { |
| display: none; |
| } |
| |
| ::view-transition-group(*) { |
| animation: unset; |
| } |
| |
| ::view-transition-old(target) { |
| animation: -ua-view-transition-fade-out 300s; |
| } |
| |
| ::view-transition-new(target) { |
| animation: -ua-view-transition-fade-in 300s; |
| } |
| |
| </style> |
| <body> |
| <div id="target")></div> |
| </body> |
| <script> |
| function animationsCanceledPromise() { |
| const animations = document.getAnimations(); |
| const promises = animations.map(a => a.finished); |
| return new Promise(async (resolve) => { |
| const values = await Promise.allSettled(promises); |
| values.forEach((result) => { |
| assert_equals(result.status, 'rejected'); |
| }); |
| resolve(); |
| }); |
| } |
| |
| promise_test(async t => { |
| const target = document.getElementById('target'); |
| const vt = target.startViewTransition(() => { |
| target.style.backgroundColor = 'orange'; |
| }); |
| await vt.ready; |
| const animations = document.getAnimations(); |
| assert_equals(animations.length, 2, |
| 'View transition has running animations'); |
| // wait for all animations to start running before hiding target. |
| await Promise.all([...animations.map(a => a.ready)]); |
| target.classList.toggle('hidden'); |
| // Verify that the finished promise is rejected for each of the started |
| // animations. |
| await animationsCanceledPromise(); |
| // Verify finished promise is resolved even though the transition did not |
| // run to completion. |
| return vt.finished; |
| }, 'Display none during a view transition skips the transition.'); |
| </script> |
| </html> |
