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<!DOCTYPE html>
<meta charset="utf-8" />
<title>Focusability of inert inside canvas</title>
<link rel="author" title="Oriol Brufau" href="mailto:obrufau@igalia.com">
<link rel="help" href="https://html.spec.whatwg.org/multipage/interaction.html#focusable-area">
<link rel="help" href="https://html.spec.whatwg.org/multipage/interaction.html#inert">
<link rel="help" href="https://html.spec.whatwg.org/multipage/canvas.html#being-used-as-relevant-canvas-fallback-content">
<link rel="help" href="https://github.com/whatwg/html/issues/7534">
<meta name="assert" content="
Checks that inert elements are not focusable
even when being used as relevant canvas fallback content,
even in a display:none subtree">
<div id="log"></div>
<canvas>
<section>
<div tabindex="-1" data-focusable="true">
normal `div`
</div>
<span tabindex="-1" data-focusable="true">
normal `span`
</span>
<a href="#" data-focusable="true">
normal `a`
</a>
</section>
<section style="display: none">
<div tabindex="-1" data-focusable="false">
`div` in `display: none`
</div>
<span tabindex="-1" data-focusable="false">
`span` in `display: none`
</span>
<a href="#" data-focusable="false">
`a` in `display: none`
</a>
</section>
<section inert>
<div tabindex="-1" data-focusable="false">
inert `div`
</div>
<span tabindex="-1" data-focusable="false">
inert `span`
</span>
<a href="#" data-focusable="false">
inert `a`
</a>
</section>
<section inert style="display: none">
<div tabindex="-1" data-focusable="false">
inert `div` in `display: none`
</div>
<span tabindex="-1" data-focusable="false">
inert `span` in `display: none`
</span>
<a href="#" data-focusable="false">
inert `a` in `display: none`
</a>
</section>
</canvas>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
for (let element of document.querySelectorAll("[data-focusable]")) {
test(function() {
assert_not_equals(document.activeElement, element);
element.focus();
if (JSON.parse(element.dataset.focusable)) {
assert_equals(document.activeElement, element);
} else {
assert_not_equals(document.activeElement, element);
}
}, element.textContent);
}
</script>
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