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<!DOCTYPE html>
<meta charset="utf-8" />
<title>CSS Selectors Invalidation: :target pseudo-class in :has() argument</title>
<link rel="help" href="https://drafts.csswg.org/selectors/#relational">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
#parent1 { color: grey; }
#parent1:has(:target) { color: green; }
#parent2 { color: blue; }
#parent2:has(:not(:target)) { color: grey; }
#parent2:has(:target) { color: green; }
#parent3 { color: green; }
#parent3:not(:has(:target)) { color: grey; }
</style>
<a href="#fragment">link to #fragment</a>
<a href="#fragment2">link to #fragment2</a>
<a href="#fragment3">link to #fragment3</a>
<a href="#">link to #</a>
<div id="parent1">
1:
<span id="fragment">Must be green when containing :target</span>
</div>
<div id="parent2">
2:
<span id="fragment2">Must be green when containing :target</span>
</div>
<div id="parent3">
3:
<span id="fragment3">Must be green when containing :target</span>
</div>
<script>
const GREEN = "rgb(0, 128, 0)";
const GREY = "rgb(128, 128, 128)";
const BLUE = "rgb(0, 0, 255)";
async function navigateFragment(fragment) {
return new Promise(resolve => {
let hashChanged = (e) => {
if (location.hash.substring(1) === fragment) {
resolve();
window.removeEventListener("hashchange", hashChanged);
}
};
window.addEventListener("hashchange", hashChanged);
fragmentLink(fragment).click();
});
}
function fragmentLink(fragment) {
return document.querySelector(`a[href="#${fragment}"]`);
}
promise_test(async () => {
const fragment = document.querySelector("#fragment");
const fragment2 = document.querySelector("#fragment2");
const fragment3 = document.querySelector("#fragment3");
location.hash = "";
assert_equals(getComputedStyle(parent1).color, GREY, "parent1 should be grey without :target");
assert_equals(getComputedStyle(parent2).color, GREY, "parent2 should be grey without :target");
assert_equals(getComputedStyle(parent3).color, GREY, "parent3 should be grey without :target");
await navigateFragment("fragment");
assert_true(fragment.matches(":target"));
assert_equals(getComputedStyle(parent1).color, GREEN, "parent1 should be green on fragment click");
assert_equals(getComputedStyle(parent2).color, GREY, "parent2 should be grey without :target");
assert_equals(getComputedStyle(parent3).color, GREY, "parent3 should be grey without :target");
await navigateFragment("fragment2");
assert_true(fragment2.matches(":target"));
assert_equals(getComputedStyle(parent1).color, GREY, "parent1 should be grey without :target");
assert_equals(getComputedStyle(parent2).color, GREEN, "parent2 should be green on fragment click");
assert_equals(getComputedStyle(parent3).color, GREY, "parent3 should be grey without :target");
fragment2.remove();
assert_equals(getComputedStyle(parent2).color, BLUE, "parent2 should be blue after removing only child");
parent2.append(fragment2);
// Skip to check parent2 color since there is nothing in the spec mentioning DOM mutations affecting the target element.
// - https://html.spec.whatwg.org/multipage/browsing-the-web.html#scroll-to-fragid
await navigateFragment("fragment3");
assert_true(fragment3.matches(":target"));
assert_equals(getComputedStyle(parent1).color, GREY, "parent1 should be grey without :target");
assert_equals(getComputedStyle(parent2).color, GREY, "parent2 should be grey without :target");
assert_equals(getComputedStyle(parent3).color, GREEN, "parent3 should be green on fragment click");
await navigateFragment("");
assert_equals(location.hash, "");
assert_equals(getComputedStyle(parent1).color, GREY, "parent1 should be grey without :target");
assert_equals(getComputedStyle(parent2).color, GREY, "parent2 should be grey without :target");
assert_equals(getComputedStyle(parent3).color, GREY, "parent3 should be grey without :target");
});
</script>
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