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<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=1300587">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<form>
<label for=custom>label</label>
<my-custom-element id=custom></my-custom-element>
</form>
<script>
class MyCustomElement extends HTMLElement {
static formAssociated = true;
constructor() {
super();
const root = this.attachShadow({
delegatesFocus: true,
mode: 'open'
});
root.appendChild(document.createElement('input'));
}
};
customElements.define('my-custom-element', MyCustomElement);
window.onload = () => {
promise_test(async () => {
const label = document.querySelector('label');
const customElement = document.querySelector('my-custom-element');
const input = customElement.shadowRoot.querySelector('input');
await test_driver.click(label);
assert_equals(document.activeElement, customElement);
assert_equals(customElement.shadowRoot.activeElement, input);
}, `Clicking on a label for a form associated custom element with delegatesFocus should focus the custom element's focus delegate.`);
};
</script>
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