| <!DOCTYPE html> |
| <html> |
| <title>View transitions: computed style on pseudo-element stays in sync with the DOM element</title> |
| <link rel="help" href="https://www.w3.org/TR/css-view-transitions-1/"> |
| <link rel="author" href="mailto:khushalsagar@chromium.org"> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style> |
| div { |
| width: 100px; |
| height: 100px; |
| background: blue; |
| view-transition-name: target; |
| contain: paint; |
| } |
| </style> |
| |
| <div id=first></div> |
| |
| <script> |
| promise_test(async t => { |
| assert_implements(document.startViewTransition, "Missing document.startViewTransition"); |
| return new Promise(async (resolve, reject) => { |
| let transition = document.startViewTransition(); |
| await transition.updateCallbackDone; |
| await transition.ready; |
| |
| let viewbox = window.getComputedStyle( |
| document.documentElement, "::view-transition-new(target)").objectViewBox; |
| assert_in_array(viewbox, ["none", undefined], "incorrect viewbox " + viewbox); |
| |
| first.style.filter = "blur(5px)"; |
| viewbox = window.getComputedStyle( |
| document.documentElement, "::view-transition-new(target)").objectViewBox; |
| assert_in_array(viewbox, ["none", undefined], "incorrect viewbox " + viewbox); |
| |
| transition.finished.then(resolve, reject); |
| }); |
| }, "computed style on pseudo-element stays in sync with the DOM element"); |
| </script> |
