| <!DOCTYPE html> |
| <title>View transitions: event pseudo name</title> |
| <link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/"> |
| <link rel="author" href="mailto:vmpstr@chromium.org"> |
| |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style> |
| :root { view-transition-name: none; } |
| #first { |
| background: blue; |
| width: 100px; |
| height: 100px; |
| view-transition-name: shared; |
| } |
| |
| html::view-transition-group(*), |
| html::view-transition-image-pair(*), |
| html::view-transition-new(*), |
| html::view-transition-old(*) { |
| animation-duration: 600s; |
| } |
| |
| @keyframes fade-in { |
| from { opacity: 0; } |
| } |
| html::view-transition-image-pair(*) { |
| animation: fade-in 600s both; |
| } |
| |
| </style> |
| <div id=first></div> |
| <script> |
| async_test(t => { |
| assert_implements(document.startViewTransition, "Missing document.startViewTransition"); |
| let groupAnimationCount = 0; |
| let oldAnimationCount = 0; |
| let newAnimationCount = 0; |
| let wrapperAnimationCount = 0; |
| |
| document.documentElement.addEventListener("animationstart", (e) => { |
| let pseudo = e.pseudoElement; |
| if (pseudo == "::view-transition-group(shared)") { |
| groupAnimationCount++; |
| } else if (pseudo == "::view-transition-new(shared)") { |
| newAnimationCount++; |
| } else if (pseudo == "::view-transition-old(shared)") { |
| oldAnimationCount++; |
| } else if (pseudo = "::view-transition-image-pair(shared)") { |
| wrapperAnimationCount++; |
| } |
| |
| let total = |
| groupAnimationCount + oldAnimationCount + newAnimationCount + wrapperAnimationCount; |
| // Old/new images have 2 animations : opacity and mix-blend-mode. |
| if (total == 6) { |
| t.step(() => assert_equals(groupAnimationCount, 1)); |
| t.step(() => assert_equals(wrapperAnimationCount, 1)); |
| t.step(() => assert_equals(oldAnimationCount, 2)); |
| t.step(() => assert_equals(newAnimationCount, 2)); |
| t.done(); |
| } |
| }); |
| document.startViewTransition(); |
| }, "verifies pseudo name includes a tag"); |
| |
| </script> |
| |
