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<!DOCTYPE html>
<html>
<head>
<meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
<link rel="help" href="https://github.com/whatwg/html/issues/10854">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<some-host id="host">
<template shadowrootmode="closed" shadowrootclonable="true" shadowrootcustomelementregistry>
<a-b>
<template shadowrootmode="closed" shadowrootclonable="true" shadowrootcustomelementregistry>
<c-d>
<template shadowrootmode="closed" shadowrootclonable="true">
<a-b></a-b>
</template>
</c-d>
</template>
</a-b>
</template>
</some-host>
<script>
customElements.define('some-host', class SomeHost extends HTMLElement {
elementInternals;
constructor() {
super();
this.elementInternals = this.attachInternals();
}
});
customElements.define('a-b', class GlobalABElement extends HTMLElement { });
customElements.define('c-d', class GlobalCDElement extends HTMLElement { });
test(() => {
assert_equals(typeof(window.customElements.upgrade), 'function');
assert_equals(typeof((new CustomElementRegistry).upgrade), 'function');
}, 'upgrade is a function on both global and scoped CustomElementRegistry');
test(() => {
const registry = new CustomElementRegistry;
registry.define('a-b', class ABElement extends HTMLElement { });
const clone = host.cloneNode(true);
registry.upgrade(clone.elementInternals.shadowRoot);
assert_equals(clone.elementInternals.shadowRoot.querySelector('a-b').__proto__.constructor.name, 'HTMLElement');
}, 'upgrade is a no-op when called on a shadow root with no association');
test(() => {
const registry = new CustomElementRegistry;
registry.define('a-b', class ABElement extends HTMLElement {
elementInternals;
constructor() {
super();
this.elementInternals = this.attachInternals();
}
});
const clone = host.cloneNode(true);
registry.initialize(clone.elementInternals.shadowRoot);
registry.upgrade(clone.elementInternals.shadowRoot);
const abElement = clone.elementInternals.shadowRoot.querySelector('a-b');
assert_equals(abElement.__proto__.constructor.name, 'ABElement');
assert_equals(abElement.elementInternals.shadowRoot.customElementRegistry, null);
const cdElement = abElement.elementInternals.shadowRoot.querySelector('c-d');
assert_equals(cdElement.__proto__.constructor.name, 'HTMLElement');
assert_equals(cdElement.customElementRegistry, null);
}, 'upgrade should upgrade a candidate element when called on a shadow root with an association');
test(() => {
const registry = new CustomElementRegistry;
registry.define('a-b', class ScopedABElement extends HTMLElement {
elementInternals;
constructor() {
super();
this.elementInternals = this.attachInternals();
}
});
const clone = host.cloneNode(true);
registry.initialize(clone.elementInternals.shadowRoot);
registry.upgrade(clone.elementInternals.shadowRoot);
const abElement = clone.elementInternals.shadowRoot.querySelector('a-b');
assert_equals(abElement.__proto__.constructor.name, 'ScopedABElement');
registry.initialize(abElement.elementInternals.shadowRoot);
assert_equals(abElement.elementInternals.shadowRoot.customElementRegistry, registry);
const cdElement = abElement.elementInternals.shadowRoot.querySelector('c-d');
assert_equals(cdElement.customElementRegistry, registry);
registry.define('c-d', class ScopedCDElement extends HTMLElement {
elementInternals;
constructor() {
super();
this.elementInternals = this.attachInternals();
}
});
assert_equals(cdElement.__proto__.constructor.name, 'HTMLElement');
registry.upgrade(abElement.elementInternals.shadowRoot);
assert_equals(cdElement.__proto__.constructor.name, 'ScopedCDElement');
assert_equals(cdElement.customElementRegistry, registry);
assert_equals(cdElement.elementInternals.shadowRoot.customElementRegistry, window.customElements);
const innerAB = cdElement.elementInternals.shadowRoot.querySelector('a-b');
assert_equals(innerAB.customElementRegistry, window.customElements);
assert_equals(innerAB.__proto__.constructor.name, 'GlobalABElement');
}, 'upgrade should not upgrade a candidate element not associated with a registry');
</script>
</body>
</html>
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