| <!DOCTYPE html> |
| <html> |
| <meta charset="utf-8"> |
| <meta name="viewport" content="width=device-width, initial-scale=1"> |
| <title>Change animation-range after creation</title> |
| <link rel="help" src="https://www.w3.org/TR/scroll-animations-1/#named-range-animation-declaration"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/web-animations/testcommon.js"></script> |
| <script src="support/testcommon.js"></script> |
| <style> |
| @keyframes anim { |
| from { z-index: 0; background-color: skyblue;} |
| to { z-index: 100; background-color: coral; } |
| } |
| #scroller { |
| border: 10px solid lightgray; |
| overflow-y: scroll; |
| width: 200px; |
| height: 200px; |
| } |
| /* Reset specificity to allow animation-range-* from .restrict-range to win. */ |
| :where(#target) { |
| margin: 800px 0px; |
| width: 100px; |
| height: 100px; |
| z-index: -1; |
| background-color: green; |
| animation: anim auto both linear; |
| animation-timeline: --t1; |
| view-timeline: --t1 block; |
| } |
| .restrict-range { |
| animation-range-start: contain 0%; |
| animation-range-end: contain 100%; |
| } |
| </style> |
| <body> |
| <div id=scroller> |
| <div id=target></div> |
| </div> |
| </body> |
| <script type="text/javascript"> |
| setup(assert_implements_animation_timeline); |
| |
| async function scrollTop(e, value) { |
| e.scrollTop = value; |
| await waitForNextFrame(); |
| } |
| async function waitForAnimationReady(target) { |
| await waitForNextFrame(); |
| await Promise.all(target.getAnimations().map(x => x.promise)); |
| } |
| async function assertValueAt(scroller, target, position, expected) { |
| await waitForAnimationReady(target); |
| await scrollTop(scroller, position); |
| assert_equals(getComputedStyle(target).zIndex, expected.toString()); |
| } |
| |
| promise_test(async t => { |
| const scroller = document.getElementById('scroller'); |
| const target = document.getElementById('target'); |
| waitForAnimationReady(target); |
| |
| await assertValueAt(scroller, target, 600, 0); |
| await assertValueAt(scroller, target, 700, 33); |
| await assertValueAt(scroller, target, 750, 50); |
| await assertValueAt(scroller, target, 800, 67); |
| |
| target.classList.toggle('restrict-range'); |
| await waitForNextFrame(); |
| |
| await assertValueAt(scroller, target, 700, 0); |
| await assertValueAt(scroller, target, 750, 50); |
| await assertValueAt(scroller, target, 800, 100); |
| }, 'Ensure that animation is updated on a style change'); |
| </script> |
| </html> |
