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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/css/css-scroll-anchoring/opt-out.html
parentInitial commit. (diff)
downloadfirefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz
firefox-43a97878ce14b72f0981164f87f2e35e14151312.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/opt-out.html')
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diff --git a/testing/web-platform/tests/css/css-scroll-anchoring/opt-out.html b/testing/web-platform/tests/css/css-scroll-anchoring/opt-out.html
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+++ b/testing/web-platform/tests/css/css-scroll-anchoring/opt-out.html
@@ -0,0 +1,74 @@
+<!DOCTYPE html>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<style>
+
+body { height: 2000px; overflow-anchor: none; }
+#scroller { overflow: scroll; width: 500px; height: 300px; }
+.anchor {
+ position:relative; height: 100px; width: 150px;
+ background-color: #afa; border: 1px solid gray;
+}
+#forceScrolling { height: 500px; background-color: #fcc; }
+
+</style>
+<div id="outerChanger"></div>
+<div id="outerAnchor" class="anchor"></div>
+<div id="scroller">
+ <div id="innerChanger"></div>
+ <div id="innerAnchor" class="anchor"></div>
+ <div id="forceScrolling"></div>
+</div>
+<script>
+
+// Tests that scroll anchoring can be disabled per-scroller with the
+// overflow-anchor property.
+
+var divScroller = document.querySelector("#scroller");
+var docScroller = document.scrollingElement;
+var innerChanger = document.querySelector("#innerChanger");
+var outerChanger = document.querySelector("#outerChanger");
+
+function setup() {
+ divScroller.scrollTop = 100;
+ docScroller.scrollTop = 100;
+ innerChanger.style.height = "200px";
+ outerChanger.style.height = "150px";
+}
+
+function reset() {
+ document.body.style.overflowAnchor = "";
+ divScroller.style.overflowAnchor = "";
+ divScroller.scrollTop = 0;
+ docScroller.scrollTop = 0;
+ innerChanger.style.height = "";
+ outerChanger.style.height = "";
+}
+
+test(() => {
+ setup();
+
+ assert_equals(divScroller.scrollTop, 300,
+ "Scroll anchoring should apply to #scroller.");
+
+ assert_equals(docScroller.scrollTop, 100,
+ "Scroll anchoring should not apply to the document scroller.");
+
+ reset();
+}, "Disabled on document, enabled on div.");
+
+test(() => {
+ document.body.style.overflowAnchor = "auto";
+ divScroller.style.overflowAnchor = "none";
+ setup();
+
+ assert_equals(divScroller.scrollTop, 100,
+ "Scroll anchoring should not apply to #scroller.");
+
+ assert_equals(docScroller.scrollTop, 250,
+ "Scroll anchoring should apply to the document scroller.");
+
+ reset();
+}, "Enabled on document, disabled on div.");
+
+</script>