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Test Info: Warnings
- This test has a WPT meta file that expects 2 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /custom-elements/element-internals-aria-element-reflection.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Element Reflection for aria-activedescendant and aria-errormessage on ElementInternals</title>
<link rel=help href="https://whatpr.org/html/3917/common-dom-interfaces.html#reflecting-content-attributes-in-idl-attributes:element">
<link rel="author" title="Alice Boxhall" href="alice@igalia.com">
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<script>
class CustomElement extends HTMLElement {
constructor() {
super();
this.i = this.attachInternals();
}
}
customElements.define('custom-element', CustomElement);
</script>
<custom-element id="custom1"></custom-element>
<div id="activedescendant">Active descendant</div>
<div id="controls">Controls</div>
<div id="describedby">Described by</div>
<div id="details">Details</div>
<div id="errormessage">Error message</div>
<div id="flowto">Flow to</div>
<div id="labelledby">Labelled By</div>
<div id="owns">Owns</div>
<script>
const element_properties = [
['ariaActiveDescendantElement', 'activedescendant']];
const array_properties = [
['ariaControlsElements', 'controls'],
['ariaDescribedByElements', 'describedby'],
['ariaDetailsElements', 'details'],
['ariaErrorMessageElements', 'errormessage'],
['ariaFlowToElements', 'flowto'],
['ariaLabelledByElements', 'labelledby'],
['ariaOwnsElements', 'owns']];
test(t => {
const custom = document.getElementById('custom1');
for (const [property, id] of element_properties) {
assert_equals(custom.i[property], null);
}
for (const [property, id] of array_properties) {
assert_equals(custom.i[property], null);
}
}, "Getting previously-unset ARIA element reflection properties on ElementInternals should return null.");
test(t => {
const custom = document.getElementById('custom1');
for (const [property, id] of element_properties) {
const related = document.getElementById(id);
custom.i[property] = related;
assert_equals(custom.i[property], related);
}
for (const [property, id] of array_properties) {
const related = document.getElementById(id);
custom.i[property] = [related];
assert_array_equals(custom.i[property], [related]);
}
}, "Getting ARIA element reflection properties on ElementInternals should return the value that was set.");
test(t => {
const custom = document.getElementById('custom1');
for (const [property, id] of array_properties) {
custom.i[property] = [];
assert_array_equals(custom.i[property], []);
}
}, "Setting ARIA element reflection properties to an empty array should work as expected.");
test(t => {
const custom = document.getElementById('custom1');
for (const [property, id] of element_properties) {
const related = document.getElementById(id);
custom.i[property] = related;
assert_equals(custom.i[property], related);
custom.i[property] = null;
assert_equals(custom.i[property], null);
}
for (const [property, id] of array_properties) {
const related = document.getElementById(id);
custom.i[property] = [related];
assert_array_equals(custom.i[property], [related]);
custom.i[property] = null;
assert_equals(custom.i[property], null);
}
}, "Setting ARIA element reflection properties on ElementInternals to null should delete any previous value, and not crash");
promise_test(async t => {
const custom = document.getElementById('custom1');
const label_before_labelledby_set = await test_driver.get_computed_label(custom);
assert_equals(label_before_labelledby_set, "", "Before ariaLabelledByElements is set, accessible label should be empty.");
const labelledBy = document.getElementById('labelledby');
custom.i.ariaLabelledByElements = [labelledBy];
const label_after_labelledby_set = await test_driver.get_computed_label(custom);
assert_equals(label_after_labelledby_set, "Labelled By", "After ariaLabelledByElements is set, accessible label should be 'Labelled by'");
}, "Setting ariaLabelledByElements should change the accessible name of the custom element")
</script>
<custom-element id="cachingInvariantMain"></custom-element>
<div id="cachingInvariantElement1"></div>
<div id="cachingInvariantElement2"></div>
<div id="cachingInvariantElement3"></div>
<div id="cachingInvariantElement4"></div>
<div id="cachingInvariantElement5"></div>
<script>
test(function(t) {
cachingInvariantMain.i.ariaControlsElements = [cachingInvariantElement1, cachingInvariantElement2];
cachingInvariantMain.i.ariaDescribedByElements = [cachingInvariantElement3, cachingInvariantElement4];
cachingInvariantMain.i.ariaDetailsElements = [cachingInvariantElement5];
cachingInvariantMain.i.ariaFlowToElements = [cachingInvariantElement1, cachingInvariantElement3];
cachingInvariantMain.i.ariaLabelledByElements = [cachingInvariantElement2, cachingInvariantElement4];
cachingInvariantMain.i.ariaOwnsElements = [cachingInvariantElement1, cachingInvariantElement2, cachingInvariantElement3];
let ariaControlsElementsArray = cachingInvariantMain.i.ariaControlsElements;
let ariaDescribedByElementsArray = cachingInvariantMain.i.ariaDescribedByElements;
let ariaDetailsElementsArray = cachingInvariantMain.i.ariaDetailsElements;
let ariaFlowToElementsArray = cachingInvariantMain.i.ariaFlowToElements;
let ariaLabelledByElementsArray = cachingInvariantMain.i.ariaLabelledByElements;
let ariaOwnsElementsArray = cachingInvariantMain.i.ariaOwnsElements;
assert_equals(ariaControlsElementsArray, cachingInvariantMain.i.ariaControlsElements, "Caching invariant for ariaControlsElements");
assert_equals(ariaDescribedByElementsArray, cachingInvariantMain.i.ariaDescribedByElements, "Caching invariant for ariaDescribedByElements");
assert_equals(ariaDetailsElementsArray, cachingInvariantMain.i.ariaDetailsElements, "Caching invariant for ariaDetailsElements");
assert_equals(ariaFlowToElementsArray, cachingInvariantMain.i.ariaFlowToElements, "Caching invariant for ariaFlowToElements");
assert_equals(ariaLabelledByElementsArray, cachingInvariantMain.i.ariaLabelledByElements, "Caching invariant for ariaLabelledByElements");
assert_equals(ariaOwnsElementsArray, cachingInvariantMain.i.ariaOwnsElements, "Caching invariant for ariaOwnsElements");
// Ensure that cached values don't become stale
cachingInvariantMain.i.ariaControlsElements = [cachingInvariantElement4, cachingInvariantElement5];
cachingInvariantMain.i.ariaDescribedByElements = [cachingInvariantElement1, cachingInvariantElement2];
cachingInvariantMain.i.ariaDetailsElements = [cachingInvariantElement3];
cachingInvariantMain.i.ariaFlowToElements = [cachingInvariantElement4, cachingInvariantElement5];
cachingInvariantMain.i.ariaLabelledByElements = [cachingInvariantElement1, cachingInvariantElement2];
cachingInvariantMain.i.ariaOwnsElements = [cachingInvariantElement3, cachingInvariantElement4, cachingInvariantElement1];
ariaControlsElementsArray = cachingInvariantMain.i.ariaControlsElements;
ariaDescribedByElementsArray = cachingInvariantMain.i.ariaDescribedByElements;
ariaDetailsElementsArray = cachingInvariantMain.i.ariaDetailsElements;
ariaFlowToElementsArray = cachingInvariantMain.i.ariaFlowToElements;
ariaLabelledByElementsArray = cachingInvariantMain.i.ariaLabelledByElements;
ariaOwnsElementsArray = cachingInvariantMain.i.ariaOwnsElements;
assert_equals(ariaControlsElementsArray, cachingInvariantMain.i.ariaControlsElements, "Caching invariant for ariaControlsElements");
assert_equals(ariaDescribedByElementsArray, cachingInvariantMain.i.ariaDescribedByElements, "Caching invariant for ariaDescribedByElements");
assert_equals(ariaDetailsElementsArray, cachingInvariantMain.i.ariaDetailsElements, "Caching invariant for ariaDetailsElements");
assert_equals(ariaFlowToElementsArray, cachingInvariantMain.i.ariaFlowToElements, "Caching invariant for ariaFlowToElements");
assert_equals(ariaLabelledByElementsArray, cachingInvariantMain.i.ariaLabelledByElements, "Caching invariant for ariaLabelledByElements");
assert_equals(ariaOwnsElementsArray, cachingInvariantMain.i.ariaOwnsElements, "Caching invariant for ariaOwnsElements");
}, "Caching invariant different attributes.");
</script>
<custom-element id="cachingInvariantMain1"></custom-element>
<custom-element id="cachingInvariantMain2"></custom-element>
<script>
test(function(t) {
cachingInvariantMain1.i.ariaDescribedByElements = [cachingInvariantElement1, cachingInvariantElement2];
cachingInvariantMain2.i.ariaDescribedByElements = [cachingInvariantElement1, cachingInvariantElement2];
let ariaDescribedByElementsArray1 = cachingInvariantMain1.i.ariaDescribedByElements;
let ariaDescribedByElementsArray2 = cachingInvariantMain2.i.ariaDescribedByElements;
assert_equals(ariaDescribedByElementsArray1, cachingInvariantMain1.i.ariaDescribedByElements, "Caching invariant for ariaDescribedByElements in one elemnt");
assert_equals(ariaDescribedByElementsArray2, cachingInvariantMain2.i.ariaDescribedByElements, "Caching invariant for ariaDescribedByElements in onother elemnt");
assert_not_equals(cachingInvariantMain1.i.ariaDescribedByElements, cachingInvariantMain2.i.ariaDescribedByElements);
}, "Caching invariant different elements.");
</script>
</body>
</html>