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<!DOCTYPE html>
<title>@scope - nesting (&)</title>
<link rel="help" href="https://drafts.csswg.org/css-cascade-6/#scope-atrule">
<link rel="help" href="https://drafts.csswg.org/css-nesting-1/#nest-selector">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<main id=main></main>
<template id=test_nest_scope_end>
<div>
<style>
@scope (.a) to (& > &) {
* { z-index:1; }
}
</style>
<div class=a> <!-- This scope is limited by the element below. -->
<div class=a> <!-- This scope is limited by its own root. -->
<div id=below></div>
</div>
</div>
</div>
<div id=outside></div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_nest_scope_end.content.cloneNode(true));
assert_equals(getComputedStyle(below).zIndex, 'auto');
assert_equals(getComputedStyle(outside).zIndex, 'auto');
}, 'Nesting-selector in <scope-end>');
</script>
<template id=test_nest_scope_end_implicit_scope>
<div>
<style>
/* (.b) behaves like (:scope .b), due :scope being prepended
implicitly. */
@scope (.a) to (.b) {
:scope { z-index:1; }
}
/* Should not match, since <scope-end> refers to the scope itself. */
@scope (.a) to (.b:scope) {
:scope { z-index:42; }
}
</style>
<div class="a b">
<div class=b>
<div id=below></div>
</div>
</div>
</div>
<div id=outside></div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_nest_scope_end_implicit_scope.content.cloneNode(true));
let a = document.querySelector('.a');
let b = document.querySelector('.a > .b');
assert_equals(getComputedStyle(a).zIndex, '1');
assert_equals(getComputedStyle(b).zIndex, 'auto');
assert_equals(getComputedStyle(below).zIndex, 'auto');
assert_equals(getComputedStyle(outside).zIndex, 'auto');
}, 'Implicit :scope in <scope-end>');
</script>
<template id=test_relative_selector_scope_end>
<div>
<style>
@scope (.a) to (> .b) {
*, :scope { z-index:1; }
}
</style>
<div class="a b">
<div class=b>
<div id=below></div>
</div>
</div>
</div>
<div id=outside></div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_relative_selector_scope_end.content.cloneNode(true));
let a = document.querySelector('.a');
let b = document.querySelector('.a > .b');
assert_equals(getComputedStyle(a).zIndex, '1');
assert_equals(getComputedStyle(b).zIndex, 'auto');
assert_equals(getComputedStyle(below).zIndex, 'auto');
assert_equals(getComputedStyle(outside).zIndex, 'auto');
}, 'Relative selectors in <scope-end>');
</script>
<template id=test_inner_nest>
<div>
<style>
@scope (.a) {
& + & {
z-index:1;
}
}
</style>
<div class=a>
<div id=inner1 class=a></div>
<div id=inner2 class=a></div>
</div>
</div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_inner_nest.content.cloneNode(true));
assert_equals(getComputedStyle(inner1).zIndex, 'auto');
assert_equals(getComputedStyle(inner2).zIndex, '1');
}, 'Nesting-selector in the scope\'s <stylesheet>');
</script>
<template id=test_parent_in_pseudo_scope>
<div>
<style>
@scope (#div) {
:scope {
z-index: 1;
& {
z-index: 2;
}
}
}
</style>
<div id=div></div>
</div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_parent_in_pseudo_scope.content.cloneNode(true));
assert_equals(getComputedStyle(div).zIndex, '2');
}, 'Nesting-selector within :scope rule');
</script>
<template id=test_parent_in_pseudo_scope_double>
<div>
<style>
@scope (#div) {
:scope {
z-index: 1;
& {
& {
z-index: 2;
}
}
}
}
</style>
<div id=div></div>
</div>
</template>
<script>
test((t) => {
t.add_cleanup(() => main.replaceChildren());
main.append(test_parent_in_pseudo_scope_double.content.cloneNode(true));
assert_equals(getComputedStyle(div).zIndex, '2');
}, 'Nesting-selector within :scope rule (double nested)');
</script>
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