<!DOCTYPE html>
<meta charset="utf-8">
<title>Selectors Level 4: focus-within</title>
<link rel="author" title="Manuel Rego Casasnovas" href="mailto:rego@igalia.com">
<link rel="help" href="https://drafts.csswg.org/selectors-4/#focus-within-pseudo">
<link rel="help" href="https://html.spec.whatwg.org/multipage/interaction.html#focus-fixup-rule-one">
<meta name="assert" content="Checks ':focus-within' pseudo-class after 'display: none'.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="wrapper">
  <input id="input">
</div>
<script>
  "use strict";

  const wrapper = document.getElementById("wrapper");
  const input = document.getElementById("input");

  async_test((t) => {
    input.focus();
    window.requestAnimationFrame(() => {
      t.step(() => assert_true(input.matches(":focus-within"),
                               "Check input matches ':focus-within' after being focused"));
      t.step(() => assert_true(wrapper.matches(":focus-within"),
                               "Check wrapper matches ':focus-within' after child was focused"));

      input.style.display = "none";
      window.requestAnimationFrame(() => {
        t.step(() => assert_false(input.matches(":focus-within"),
                                  "Check input doesn't match ':focus-within' after getting 'display: none'"));
        t.step(() => assert_false(wrapper.matches(":focus-within"),
                                 "Check wrapper doesn't match ':focus-within' after child got 'display: none'"));
        input.style.display = "inline";
        t.done();
      });
    });
  }, "Test ':focus-within' after 'display:none' on input");

  async_test((t) => {
    input.focus();
    window.requestAnimationFrame(() => {
      t.step(() => assert_true(input.matches(":focus-within"),
                               "Check input matches ':focus-within' after being focused"));
      t.step(() => assert_true(wrapper.matches(":focus-within"),
                               "Check wrapper matches ':focus-within' after child was focused"));

      wrapper.style.display = "none";
      window.requestAnimationFrame(() => {
        t.step(() => assert_false(input.matches(":focus-within"),
                                  "Check input doesn't match ':focus-within' after parent got 'display: none'"));
        t.step(() => assert_false(wrapper.matches(":focus-within"),
                                 "Check wrapper doesn't match ':focus-within' after getting 'display: none'"));
        wrapper.style.display = "block";
        t.done();
      });
    });
  }, "Test ':focus-within' after 'display:none' on input's parent");
</script>