mozilla-central/testing/web-platform/tests/css/css-overflow/scroll-markers-focus-on-scrolling.html

Source code

Revision control

Copy as Markdown

Other Tools

Test Info: Warnings

<!doctype html>
<meta charset="utf-8">
<title>CSS Test: scroll tracking for ::scroll-marker </title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/css/css-transitions/support/helper.js"></script>
<style>
* {
padding: 0;
margin: 0;
}
#scroller {
overflow: scroll;
scroll-marker-group: before;
height: 100px;
}
#scroller::scroll-marker-group {
border: 3px solid black;
display: flex;
width: 100px;
height: 20px;
}
#scroller div {
width: 100px;
height: 100px;
}
#scroller div::scroll-marker {
content: "";
background-color: red;
display: inline-flex;
width: 10px;
height: 10px;
border-radius: 50%;
}
#scroller div::scroll-marker:target-current {
background-color: green;
}
#scroller div::scroll-marker:focus {
opacity: 0.5;
}
</style>
<div id="scroller">
<div></div>
<div id="target"></div>
</div>
<script>
function assertPseudoElementProperty(originatingElement, pseudoType, opacity) {
const pseudoStyle = getComputedStyle(originatingElement, pseudoType);
const pseudoOpacity = pseudoStyle.getPropertyValue("opacity");
assert_equals(pseudoOpacity, opacity, pseudoType +
" opacity should be " + opacity.toString() +
" but was " + pseudoOpacity.toString());
}
promise_test(async () => {
scroller.scrollTop = 150;
assertPseudoElementProperty(target, "::scroll-marker", "1");
}, "active ::scroll-marker doesn't have focus on scroll if previous ::scroll-marker didn't have it");
promise_test(async () => {
/* Click the first ::scroll-marker to give it focus. */
let actions_promise = new test_driver.Actions()
.pointerMove(7, 7)
.pointerDown()
.pointerUp()
.pointerDown()
.pointerUp()
.send();
await actions_promise;
await waitForAnimationFrames(2);
scroller.scrollTop = 150;
await waitForAnimationFrames(2);
assertPseudoElementProperty(target, "::scroll-marker", "0.5");
}, "active ::scroll-marker saves focus on scroll if previous ::scroll-marker had it");
</script>