<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>CSS Test (Selectors): Keyboard focus enables :focus-visible</title>
<link rel="author" title="Alice Boxhall" href="[email protected]" />
<link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
@supports not selector(:focus-visible) {
:focus {
outline: red solid 5px;
background-color: red;
}
}
:focus-visible {
outline: green solid 5px;
}
:focus:not(:focus-visible) {
background-color: red;
outline: 0;
}
</style>
</head>
<body>
This test checks that any element focused programmatically on page load will have <code>:focus-visible</code> matching enabled.
<ul id="instructions">
<li>If the element that says "I will be focused automatically" has a red background, then the test result is FAILURE. If the element has a green outline, then the test result is SUCCESS.</li>
</ul>
<br />
<div id="el" tabindex="-1">I will be focused automatically.</div>
<script>
window.addEventListener('load', () => {
el.focus();
});
async_test(function(t) {
el.addEventListener("focus", t.step_func(function() {
assert_equals(getComputedStyle(el).outlineColor, "rgb(0, 128, 0)", `outlineColor for ${el.tagName}#${el.id} should be green`);
assert_not_equals(getComputedStyle(el).backgroundColor, "rgb(255, 0, 0)", `backgroundColor for ${el.tagName}#${el.id} should NOT be red`);
t.done();
}));
}, "Programmatic focus on page load should match :focus-visible");
</script>
</body>
</html>
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