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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /shadow-dom/reference-target/tentative/label-descendant.html - WPT Dashboard Interop Dashboard
<!DOCTYPE HTML>
<html>
<head>
<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>
<script src="/resources/testdriver-actions.js"></script>
<script src="/wai-aria/scripts/aria-utils.js"></script>
</head>
<body>
<!-- 1. Label applies to descendant custom element that uses shadowrootreferencetarget -->
<label>
Input 1
<div>
<x-input1 id="x-input1">
<template shadowrootmode="open" shadowrootreferencetarget="input">
<input id="input">
</template>
</x-input1>
</div>
</label>
<label>
Input 1 via Options
<div>
<x-input1 id="x-input1-a"></x-input1>
</div>
</label>
<script>
const customInput1 = document.querySelector('#x-input1-a');
customInput1.attachShadow({ mode: 'open', referenceTarget: 'input' });
customInput1.shadowRoot.innerHTML = `<input id="input">`;
</script>
<script>
function testImplicitLabelAssociation(id, label) {
promise_test(async t => {
const x_input = document.getElementById(id);
const input = x_input.shadowRoot.getElementById('input');
// The label should apply to the input element and not the host.
assert_equals(await test_driver.get_computed_label(x_input), "");
assert_equals(await test_driver.get_computed_label(input), label);
}, "Label applies to descendant custom element that uses shadowrootreferencetarget (" + label + ")");
}
testImplicitLabelAssociation('x-input1', 'Input 1');
testImplicitLabelAssociation('x-input1-a', 'Input 1 via Options');
</script>
<!-- 2. Label applies to multiple layers of descendant custom elements that use shadowrootreferencetarget -->
<label>
Input 2
<x-outer2 id="x-outer2">
<template shadowrootmode="open" shadowrootreferencetarget="x-inner2">
<x-inner2 id="x-inner2">
<template shadowrootmode="open" shadowrootreferencetarget="input">
<input id="input">
</template>
</x-inner2>
</template>
</x-outer2>
</label>
<label>
Input 2 via Options
<x-outer2 id="x-outer2-a"></x-outer2>
</label>
<script>
const customOuter2 = document.querySelector('#x-outer2-a');
customOuter2.attachShadow({ mode: 'open', referenceTarget: 'x-inner2' });
customOuter2.shadowRoot.innerHTML = `<x-inner2 id="x-inner2"></x-inner2>`;
const customInner2 = customOuter2.shadowRoot.querySelector('x-inner2');
customInner2.attachShadow({ mode: 'open', referenceTarget: 'input' });
customInner2.shadowRoot.innerHTML = `<input id="input">`;
</script>
<script>
function testDeepImplicitLabelAssociation(id, label) {
promise_test(async t => {
const outer = document.getElementById(id);
const inner = outer.shadowRoot.getElementById('x-inner2');
const input = inner.shadowRoot.getElementById('input');
// The label should apply to the input element and not any of the hosts.
assert_equals(await test_driver.get_computed_label(outer), "");
assert_equals(await test_driver.get_computed_label(inner), "");
assert_equals(await test_driver.get_computed_label(input), label);
}, "Label applies to multiple layers of descendant custom elements that use shadowrootreferencetarget (" + label + ")");
}
testDeepImplicitLabelAssociation('x-outer2', 'Input 2');
testDeepImplicitLabelAssociation('x-outer2-a', 'Input 2 via Options');
</script>
</body>
</html>