<!doctype html>
<meta charset="utf-8">
<title>CSS Test: Invalidation for :host() inside :has()</title>
<link rel="author" title="Byungwoo" href="mailto:[email protected]">
<link rel="help" href="https://drafts.csswg.org/selectors/#relational">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="host_parent"><div id="host"></div></div>
<script>
var shadow = host.attachShadow({ mode: 'open' });
shadow.innerHTML = `
<style>
.subject {
color: red;
}
.subject:has(:is(:host(.a) > .foo .bar)) { color: green }
.subject:has(:is(:host(.a) .bar)) { color: blue }
</style>
<div class="foo">
<div id="subject1" class="subject">
<div class="bar"></div>
</div>
</div>
<div>
<div class="foo">
<div id="subject2" class="subject">
<div class="bar"></div>
</div>
</div>
</div>
`;
const red = "rgb(255, 0, 0)";
const green = "rgb(0, 128, 0)";
const blue = "rgb(0, 0, 255)";
function checkColor(test_name, subject_id, subject_color) {
test(function() {
let subject = shadow.querySelector("#" + subject_id);
assert_equals(getComputedStyle(subject).color, subject_color);
}, test_name + ": Check #" + subject_id + " color");
}
checkColor("Before adding 'a' to #host", "subject1", red);
checkColor("Before adding 'a' to #host", "subject2", red);
host.classList.add('a');
checkColor("After adding 'a' to #host", "subject1", green);
checkColor("After adding 'a' to #host", "subject2", blue);
</script>
Codebase Browser
chromium