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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /testing/web-platform/tests/css/css-scroll-anchoring/heuristic-with-offset-update-from-scroll-event-listener.html | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/css/css-scroll-anchoring/heuristic-with-offset-update-from-scroll-event-listener.html')
-rw-r--r-- | testing/web-platform/tests/css/css-scroll-anchoring/heuristic-with-offset-update-from-scroll-event-listener.html | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-scroll-anchoring/heuristic-with-offset-update-from-scroll-event-listener.html b/testing/web-platform/tests/css/css-scroll-anchoring/heuristic-with-offset-update-from-scroll-event-listener.html new file mode 100644 index 0000000000..b3964dfcc7 --- /dev/null +++ b/testing/web-platform/tests/css/css-scroll-anchoring/heuristic-with-offset-update-from-scroll-event-listener.html @@ -0,0 +1,59 @@ +<!doctype html> +<meta charset="utf-8"> +<link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring-1/"> +<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1586909"> +<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> +<link rel="author" title="Mozilla" href="https://mozilla.org"> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<style> + #scroller { + overflow: scroll; + height: 500px; + height: 500px; + } + #before { + height: 200px; + } + #anchor { + position: relative; + width: 200px; + height: 200px; + margin-bottom: 500px; + background-color: blue; + top: 0px; + } +</style> +<div id="scroller"> + <div id="before"> + </div> + <div id="anchor"> + </div> +</div> +<script> +async_test(t => { + let scroller = document.querySelector('#scroller'); + let before = document.querySelector('#before'); + let anchor = document.querySelector('#anchor'); + + scroller.onscroll = t.step_func(function() { + // Adjust the 'top' of #anchor, which should trigger a suppression + anchor.style.top = '10px'; + + // Expand #before and make sure we don't apply an adjustment + before.style.height = '300px'; + + assert_equals(scroller.scrollTop, 200); + + t.step_timeout(t.step_func_done(function() { + // Expand #before again and make sure we don't keep #anchor as + // an anchor from the last time. + before.style.height = '600px'; + assert_equals(scroller.scrollTop, 200); + }), 0); + }); + + // Scroll down to select #anchor as a scroll anchor + scroller.scrollTop = 200; +}, 'Positioned ancestors with dynamic changes to offsets trigger scroll suppressions.'); +</script> |