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WebKit export of https://bugs.webkit.org/show_bug.cgi?id=249455 (#37924)
[:has() pseudo-class] Support invalidation for :buffering and :stalled pseudo-classes https://commits.webkit.org/258891@main
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css/selectors/invalidation/media-loading-pseudo-classes-in-has.html
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<!DOCTYPE html> | ||
<meta name="timeout" content="long" /> | ||
<title>:has() invalidation with :buffering & :stalled pseudo-classes</title> | ||
<link rel="author" title="Tim Nguyen" href="https://github.com/nt1m"> | ||
<link rel="help" href="https://drafts.csswg.org/selectors/#relational"> | ||
<link rel="help" href="https://w3c.github.io/csswg-drafts/selectors/#media-loading-state"> | ||
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<style> | ||
#subject:has(video:buffering) { | ||
background-color: blue; | ||
} | ||
#subject:has(video:stalled) { | ||
border-color: green; | ||
} | ||
</style> | ||
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<div id="subject"> | ||
<video width="300" height="300" muted loop controls></video> | ||
</div> | ||
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<script src="/resources/testharness.js"></script> | ||
<script src="/resources/testharnessreport.js"></script> | ||
<script> | ||
const BLUE = "rgb(0, 0, 255)"; | ||
const GREEN = "rgb(0, 128, 0)"; | ||
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function assert_buffering_state(buffering) { | ||
if (buffering) | ||
assert_equals(getComputedStyle(subject).backgroundColor, BLUE); | ||
else | ||
assert_not_equals(getComputedStyle(subject).backgroundColor, BLUE); | ||
} | ||
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function assert_stalled_state(stalled) { | ||
if (stalled) | ||
assert_equals(getComputedStyle(subject).borderColor, GREEN); | ||
else | ||
assert_not_equals(getComputedStyle(subject).borderColor, GREEN); | ||
} | ||
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promise_test(async (t) => { | ||
const video = document.querySelector("video"); | ||
assert_stalled_state(false); | ||
await new Promise((r) => { | ||
video.addEventListener("stalled", r, { once: true }); | ||
video.src = `/media/counting.mp4?pipe=trickle(100:d1:r2)&random=${Math.random()}`; | ||
}); | ||
assert_stalled_state(false); | ||
const promise = video.play(); | ||
assert_stalled_state(true); | ||
video.src = ""; | ||
// Wait for the video to abort trying to play | ||
try { | ||
await promise; | ||
} catch (err) {} | ||
await video.pause(); | ||
assert_stalled_state(false); | ||
}, "Test :has(:stalled) invalidation"); | ||
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promise_test(async (t) => { | ||
const video = document.querySelector("video"); | ||
assert_buffering_state(false); | ||
await new Promise((r) => { | ||
video.addEventListener("stalled", r, { once: true }); | ||
video.src = `/media/counting.mp4?pipe=trickle(100:d1:r2)&random=${Math.random()}`; | ||
}); | ||
video.currentTime = 10; | ||
assert_buffering_state(false); | ||
const promise = video.play(); | ||
assert_buffering_state(true); | ||
video.src = ""; | ||
// Wait for the video to abort trying to play | ||
try { | ||
await promise; | ||
} catch (err) {} | ||
await video.pause(); | ||
assert_buffering_state(false); | ||
}, "Test :has(:buffering) invalidation"); | ||
</script> |