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<!DOCTYPE html>
<meta charset="utf-8">
<title>dialog focusing delegation: with two nested shadow trees</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<dialog>
<template class="turn-into-shadow-tree delegates-focus">
<button disabled>Non-focusable</button>
<template class="turn-into-shadow-tree delegates-focus">
<button tabindex="-1">Focusable</button>
<button tabindex="-1" autofocus>Focusable</button>
<button tabindex="-1">Focusable</button>
</template>
<button tabindex="-1">Focusable</button>
</template>
<button tabindex="-1">Focusable</button>
</dialog>
<script>
function turnIntoShadowTree(template) {
for (const subTemplate of template.content.querySelectorAll(".turn-into-shadow-tree")) {
turnIntoShadowTree(subTemplate);
}
const div = document.createElement("div");
div.attachShadow({ mode: "open", delegatesFocus: template.classList.contains("delegates-focus") });
div.shadowRoot.append(template.content);
template.replaceWith(div);
}
for (const template of document.querySelectorAll(".turn-into-shadow-tree")) {
turnIntoShadowTree(template);
}
for (const method of ["show", "showModal"]) {
test(t => {
const dialog = document.querySelector("dialog");
dialog[method]();
t.add_cleanup(() => dialog.close());
const shadowHostOuter = dialog.querySelector("div");
assert_equals(document.activeElement, shadowHostOuter, "document.activeElement");
const shadowHostInner = shadowHostOuter.shadowRoot.querySelector("div");
assert_equals(shadowHostOuter.shadowRoot.activeElement, shadowHostInner, "shadowHostOuter.shadowRoot.activeElement");
const button = shadowHostInner.shadowRoot.querySelector("[autofocus]");
assert_equals(shadowHostInner.shadowRoot.activeElement, button, "shadowHostInner.shadowRoot.activeElement");
}, `${method}()`);
}
</script>
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