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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
|---|---|---|
| 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/opt-out-dynamic.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/opt-out-dynamic.html')
| -rw-r--r-- | testing/web-platform/tests/css/css-scroll-anchoring/opt-out-dynamic.html | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-scroll-anchoring/opt-out-dynamic.html b/testing/web-platform/tests/css/css-scroll-anchoring/opt-out-dynamic.html new file mode 100644 index 0000000000..ec548dc3d6 --- /dev/null +++ b/testing/web-platform/tests/css/css-scroll-anchoring/opt-out-dynamic.html @@ -0,0 +1,51 @@ +<!DOCTYPE html> +<meta charset="utf-8"> +<link rel="help" href="https://drafts.csswg.org/css-scroll-anchoring-1/"> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<style> + +#scroller { + overflow: scroll; + width: 300px; + height: 300px; +} +#before { height: 50px; } +#content { margin-top: 100px; margin-bottom: 600px; } +.no { overflow-anchor: none; } + +</style> +<div id="scroller"> + <div id="before"></div> + <div id="content">content</div> +</div> +<script> + +// Tests that dynamic styling 'overflow-anchor' on an anchor node has the +// same effect as initial styling + +test(() => { + let scroller = document.querySelector("#scroller"); + let before = document.querySelector("#before"); + let content = document.querySelector("#content"); + + // Scroll down so that #content is the first element in the viewport + scroller.scrollTop = 100; + + // Change the height of #before to trigger a scroll adjustment. This ensures + // that #content was selected as a scroll anchor + before.style.height = "100px"; + assert_equals(scroller.scrollTop, 150); + + // Now set 'overflow-anchor: none' on #content. This should invalidate the + // scroll anchor, and #scroller should recalculate its anchor. There are no + // other valid anchors in the viewport, so there should be no anchor. + content.className = 'no'; + + // Change the height of #before and make sure we don't adjust. This ensures + // that #content was not selected as a scroll anchor + before.style.height = "150px"; + assert_equals(scroller.scrollTop, 150); +}, "Dynamically styling 'overflow-anchor: none' on the anchor node should prevent scroll anchoring"); + +</script> |