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