Emilio Cobos Álvarez
72bf441d8e
If the element we're in the process of focusing gets removed in between the blur and the focus (in focusout in the test-case), clear the :focus-within state properly. Differential Revision: https://phabricator.services.mozilla.com/D270141
37 lines
1.7 KiB
HTML
37 lines
1.7 KiB
HTML
<!doctype html>
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<meta charset="utf-8">
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<title>Removing an element from its own focus() call doesn't leave stale :focus-within state</title>
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<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-within-pseudo">
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<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1996182">
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<link rel="author" href="mailto:emilio@crisal.io" title="Emilio Cobos Álvarez">
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<link rel="author" href="https://mozilla.com" title="Mozilla">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<div id="root">
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<div id="container" tabindex="-1">
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<input type="text">
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</div>
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</div>
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<script>
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onload = function() {
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test(function() {
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let root = document.getElementById("root");
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let container = document.getElementById("container");
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let input = document.querySelector("input");
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input.focus();
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assert_equals(document.activeElement, input, "activeElement after focus");
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assert_true(container.matches(":focus-within"), "container matches :focus-within");
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assert_true(root.matches(":focus-within"), "root also matches :focus-within");
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// This fires from within the next focus() call
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input.addEventListener("focusout", () => { root.innerHTML = "" });
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// container is focusable, but gets removed before we get a chance at focusing it.
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container.focus();
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assert_equals(document.activeElement, document.body, "activeElement after trying to focus sibling");
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assert_equals(container.parentNode, null, "container should get removed");
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assert_false(container.matches(":focus-within"), "container no longer matches :focus-within");
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assert_false(root.matches(":focus-within"), "root no longer matches :focus-within");
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});
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}
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</script>
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