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<!DOCTYPE html>
<title>Shadow root clonable flag</title>
<link rel='author' href='mailto:krosylight@mozilla.com'>
<link rel='author' href='mailto:masonf@chromium.org'>
<link rel='help' href='https://dom.spec.whatwg.org/#shadowroot-clonable'>
<link rel='help' href='https://github.com/whatwg/dom/issues/1249#issuecomment-1917772229'>
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<body>
<script>
test(() => {
const div = document.createElement("div");
const root = div.attachShadow({ mode: "open", clonable: true });
root.innerHTML = '<input><div><span></span></div>';
assert_true(root.clonable, "clonable attribute");
const clone = div.cloneNode(true);
const clonedRoot = clone.shadowRoot;
assert_true(clonedRoot.clonable, "clone gets the same clonable state");
assert_equals(clonedRoot.children.length, 2, "children count");
assert_equals(clonedRoot.children[0].localName, "input", "children content");
assert_equals(clonedRoot.children[1].firstElementChild.localName, "span", "grandchildren content");
const shallowClone = div.cloneNode(false);
const shallowClonedRoot = shallowClone.shadowRoot;
assert_true(shallowClonedRoot.clonable, "clone gets the same clonable state");
assert_equals(shallowClonedRoot.children.length, 2, "shallow clone still deep-clones the shadow root");
assert_equals(shallowClonedRoot.children[0].localName, "input", "shadow children content");
assert_equals(shallowClonedRoot.children[1].firstElementChild.localName, "span", "shadow grandchildren content");
}, "attachShadow with clonable: true");
for (const clonable of [false, undefined]) {
test(() => {
const div = document.createElement("div");
const root = div.attachShadow({ mode: "open", clonable });
root.appendChild(document.createElement("input"));
assert_false(root.clonable, "clonable attribute");
const clone = div.cloneNode(true);
assert_true(!clone.shadowRoot, "shadow should not be cloned");
}, `attachShadow with clonable: ${clonable}`);
}
test(() => {
const div = document.createElement("div");
div.setHTMLUnsafe('<div><template shadowrootmode=open><input></template></div>');
const root = div.firstElementChild.shadowRoot;
assert_true(!!root);
assert_false(root.clonable, "clonable is *not* automatically true for declarative shadow root");
const clone = div.cloneNode(true);
const clonedRoot = clone.firstElementChild.shadowRoot;
assert_true(!clonedRoot,'no shadow root gets cloned');
}, "declarative shadow roots do *not* get clonable: true automatically");
test(() => {
const div = document.createElement("div");
div.setHTMLUnsafe('<div><template shadowrootmode=open shadowrootclonable><input></template></div>');
const root = div.firstElementChild.shadowRoot;
assert_true(!!root);
assert_true(root.clonable, "clonable gets added when shadowrootclonable is present");
const clone = div.cloneNode(true);
const clonedRoot = clone.firstElementChild.shadowRoot;
assert_true(!!clonedRoot);
assert_equals(clonedRoot.children.length, 1, "children count");
assert_equals(clonedRoot.children[0].localName, "input", "children content");
}, "declarative shadow roots can opt in to clonable with shadowrootclonable");
</script>
<template id="test">
<div id="host">
<template shadowrootmode=open><input></template>
</div>
</template>
<script>
test(() => {
const template = document.querySelector('#test');
const root = template.content.querySelector('#host').shadowRoot;
assert_true(!!root);
const clone = template.content.cloneNode(true);
const clonedRoot = clone.querySelector('#host').shadowRoot;
assert_true(!clonedRoot,'no shadow root gets cloned');
}, "declarative shadow roots inside templates do *not* get cloned automatically");
</script>
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