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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
| commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
| tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/css/css-scroll-anchoring/position-change-heuristic-ib-split.html | |
| parent | Initial commit. (diff) | |
| download | firefox-upstream.tar.xz firefox-upstream.zip | |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/css/css-scroll-anchoring/position-change-heuristic-ib-split.html')
| -rw-r--r-- | testing/web-platform/tests/css/css-scroll-anchoring/position-change-heuristic-ib-split.html | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-scroll-anchoring/position-change-heuristic-ib-split.html b/testing/web-platform/tests/css/css-scroll-anchoring/position-change-heuristic-ib-split.html new file mode 100644 index 0000000000..e903325112 --- /dev/null +++ b/testing/web-platform/tests/css/css-scroll-anchoring/position-change-heuristic-ib-split.html @@ -0,0 +1,57 @@ +<!DOCTYPE html> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io"> +<link rel="author" title="Mozilla" href="https://mozilla.org"> +<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1559627"> +<link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring/#suppression-triggers"> +<style> + body, h1 { + margin: 0 + } + .sticky { + width: 100%; + top: 0; + left: 0; + } + .sticky > div { + width: 100%; + height: 50px; + background: darkblue; + } + header { + background: lightblue; + } + main { + background: lightgrey; + height: 200vh; + } +</style> +<header> + <h1>Some title</h1> + <span class="sticky"><div>Sticky header</div></span> +</header> +<main> + Some actual content. +</main> +<script> +const sticky = document.querySelector(".sticky"); +const nonStickyOffset = sticky.firstElementChild.offsetTop; +const t = async_test("Scroll offset adjustments are correctly suppressed when changing the position of an inline"); +let firstEvent = true; +window.onscroll = t.step_func(function() { + sticky.style.position = + document.documentElement.scrollTop > nonStickyOffset ? "fixed" : "static"; + if (firstEvent) { + firstEvent = false; + requestAnimationFrame(t.step_func(function() { + requestAnimationFrame(t.step_func_done(function() { + assert_equals(sticky.style.position, "fixed", "Element should become and remain fixed") + })); + })); + } +}); +window.onload = t.step_func(function() { + window.scrollTo(0, nonStickyOffset + 1); +}); +</script> |