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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /scroll-animations/scroll-timelines/scroll-timeline-source-single-axis-inactive.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<meta charset="utf-8">
<title>ScrollTimeline source lookup with single-axis scroll containers (inactive)</title>
<link rel="author" title="Free Debreuil" href="mailto:freedebreuil@google.com">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/web-animations/testcommon.js"></script>
<script src="./testcommon.js"></script>
<style>
#scroller {
width: 100px;
height: 100px;
overflow-x: clip;
overflow-y: scroll;
}
#subject {
width: 50px;
height: 200px;
animation: noop 1s;
animation-timeline: scroll(nearest inline);
}
@keyframes noop {}
</style>
<div id="scroller">
<div id="subject"></div>
</div>
<script>
test(() => {
// Force layout so the timeline's construction-time snapshot sees it.
scroller.offsetHeight;
const jsTimeline = new ScrollTimeline({ source: scroller, axis: 'x' });
assert_equals(jsTimeline.source, scroller);
assert_equals(jsTimeline.currentTime, null);
}, 'JS-created ScrollTimeline for a non-scrollable axis is inactive');
test(() => {
scroller.offsetHeight;
const animations = subject.getAnimations();
assert_equals(animations.length, 1);
const cssTimeline = animations[0].timeline;
assert_equals(cssTimeline.source, document.documentElement);
assert_equals(cssTimeline.currentTime, null);
}, 'CSS anonymous ScrollTimeline falls back when no ancestor matches the axis');
promise_test(async t => {
t.add_cleanup(() => {
scroller.style.display = '';
});
scroller.offsetHeight;
const jsTimeline = new ScrollTimeline({ source: scroller, axis: 'y' });
assert_not_equals(jsTimeline.currentTime, null);
scroller.style.display = 'none';
await waitForNextFrame();
await waitForNextFrame();
assert_equals(jsTimeline.currentTime, null);
}, 'ScrollTimeline becomes inactive when the reference element has display:none');
</script>