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<!DOCTYPE html>
<title>@scope and :focus</title>
<link rel="help" href="https://drafts.csswg.org/css-cascade-6/#scope-atrule">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<main id=main></main>
<template id=test_subject>
<div>
<style>
@scope (.a:focus) {
:scope { z-index: 1; }
}
</style>
<div class=a tabindex=0>1</div>
</template>
<script>
promise_test(async (t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_subject.content.cloneNode(true));
let a = main.querySelector('.a');
assert_equals(getComputedStyle(a).zIndex, 'auto');
await test_driver.bless('focus', () => a.focus());
assert_equals(getComputedStyle(a).zIndex, '1');
}, ':focus via :scope in subject');
</script>
<template id=test_non_subject>
<div>
<style>
@scope (.a:focus) {
:scope .b { z-index: 1; }
}
</style>
<div class=a tabindex=0>
<div class=b>2</div>
</div>
</template>
<script>
promise_test(async (t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_non_subject.content.cloneNode(true));
let a = main.querySelector('.a');
let b = main.querySelector('.b');
assert_equals(getComputedStyle(b).zIndex, 'auto');
await test_driver.bless('focus', () => a.focus());
assert_equals(getComputedStyle(b).zIndex, '1');
}, ':focus via :scope in non-subject');
</script>
<template id=test_subject_limit>
<div>
<style>
@scope (.a) to (:scope:focus) {
:scope { z-index: 1; }
}
</style>
<div class=a tabindex=0>3</div>
</template>
<script>
promise_test(async (t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_subject_limit.content.cloneNode(true));
let a = main.querySelector('.a');
assert_equals(getComputedStyle(a).zIndex, '1');
await test_driver.bless('focus', () => a.focus());
// After focus(), we're no longer in scope because the limit (to-selector)
// kicks in.
assert_equals(getComputedStyle(a).zIndex, 'auto');
}, ':focus in limit, :scope in subject');
</script>
<template id=test_non_subject_limit>
<div>
<style>
@scope (.a) to (.b:focus) {
.b { z-index: 1; }
}
</style>
<div class=a tabindex=0>
<div class=b tabindex=1>4</div>
</div>
</template>
<script>
promise_test(async (t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_non_subject_limit.content.cloneNode(true));
let a = main.querySelector('.a');
let b = main.querySelector('.b');
assert_equals(getComputedStyle(b).zIndex, '1');
await test_driver.bless('focus', () => b.focus());
// After focus(), we're no longer in scope because the limit (to-selector)
// kicks in.
assert_equals(getComputedStyle(b).zIndex, 'auto');
}, ':focus in intermediate limit, :scope in subject');
</script>
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