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<!DOCTYPE html>
<title>@scope - implicit scope root</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>
<main id=main></main>
<template id=test_basic>
<div>
<style>
@scope {
.a { z-index:1; }
}
</style>
<div id=inner class=a></div>
</div>
<div id=outer class=a></div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_basic.content.cloneNode(true));
assert_equals(getComputedStyle(inner).zIndex, '1');
assert_equals(getComputedStyle(outer).zIndex, 'auto');
}, '@scope without prelude implicitly scopes to parent of owner node');
</script>
<template id=test_scope_pseudo>
<div>
<div></div>
</div>
<div>
<div id=root>
<style>
@scope {
:scope { z-index:1; }
}
</style>
<div>
<div></div>
</div>
</div>
</div>
<div>
<div></div>
</div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_scope_pseudo.content.cloneNode(true));
assert_equals(getComputedStyle(root).zIndex, '1');
// Only #root should be affected.
for (let div of main.querySelectorAll('div:not(#root)')) {
assert_equals(getComputedStyle(div).zIndex, 'auto');
}
}, ':scope can style implicit root');
</script>
<template id=test_duplicate>
<div>
<style>
@scope {
.a { z-index:1; }
}
</style>
<div id=first class=a></div>
</div>
<div>
<style>
@scope {
.a { z-index:1; }
}
</style>
<div id=second class=a></div>
</div>
<div id=outer class=a></div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_duplicate.content.cloneNode(true));
assert_equals(getComputedStyle(first).zIndex, '1');
assert_equals(getComputedStyle(second).zIndex, '1');
assert_equals(getComputedStyle(outer).zIndex, 'auto');
}, '@scope works with two identical stylesheets');
</script>
<template id=test_forgiving>
<div>
<style>
@scope ($invalid) {
#a { z-index:1; }
}
</style>
<div id=a></div>
</div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_forgiving.content.cloneNode(true));
assert_equals(getComputedStyle(a).zIndex, 'auto');
}, '@scope with effectively empty :is() must not match anything');
</script>
<template id=test_implicit_descendant>
<div id=div>
<style>
@scope {
#div { z-index:1; }
}
</style>
</div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_implicit_descendant.content.cloneNode(true));
assert_equals(getComputedStyle(div).zIndex, 'auto');
}, 'Implicit @scope has implicitly added :scope descendant combinator');
</script>
<template id=test_implicit_relative>
<div id=outer>
<style>
@scope {
> div { z-index:1; }
}
</style>
<div id=child>
<div id=inner></div>
</div>
</div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_implicit_relative.content.cloneNode(true));
assert_equals(getComputedStyle(outer).zIndex, 'auto');
assert_equals(getComputedStyle(child).zIndex, '1');
assert_equals(getComputedStyle(inner).zIndex, 'auto');
}, 'Implicit @scope with inner relative selector');
</script>
<template id=test_implicit_descendant_nesting_selector>
<div id=div>
<style>
@scope {
/* Behaves like :scope */
& { z-index:1; }
}
</style>
<div id=inner></div>
</div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_implicit_descendant_nesting_selector.content.cloneNode(true));
assert_equals(getComputedStyle(div).zIndex, '1');
assert_equals(getComputedStyle(inner).zIndex, 'auto');
}, 'Implicit @scope with inner nesting selector');
</script>
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