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Test Info: Warnings
- This test has a WPT meta file that expects 14 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /shadow-dom/reference-target/tentative/property-reflection.html - WPT Dashboard Interop Dashboard
<!DOCTYPE HTML>
<html>
<head>
<script src="/html/resources/common.js"></script>
<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>
<div id="host-container"></div>
<script>
const Behavior = Object.freeze({
ReflectsHost: 'ReflectsHost',
ReflectsHostInArray: 'ReflectsHostInArray',
IsNull: 'IsNull',
ReflectsHostID: 'ReflectsHostID',
ReflectsHostIDInDOMTokenList: 'ReflectsHostIDInDOMTokenList',
});
function test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, attribute, reflected_property, expected_behavior) {
// There's nothing to test if the referencing element type doesn't have the reflecting
// property.
if (!(reflected_property in document.createElement(referencing_element_type))) {
return;
}
test(function () {
const referencing_element = document.createElement(referencing_element_type);
document.body.appendChild(referencing_element);
referencing_element.setAttribute(attribute, "host-id");
const host_container = document.querySelector("#host-container");
const host = element_creation_method(host_container, referenced_element_type);
if (expected_behavior === Behavior.ReflectsHost) {
assert_equals(referencing_element[reflected_property], host);
} else if (expected_behavior === Behavior.ReflectsHostInArray) {
assert_array_equals(referencing_element[reflected_property], [host]);
} else if (expected_behavior === Behavior.IsNull) {
assert_equals(referencing_element[reflected_property], null);
} else if (expected_behavior === Behavior.ReflectsHostID) {
assert_equals(referencing_element[reflected_property], "host-id");
} else if (expected_behavior === Behavior.ReflectsHostIDInDOMTokenList) {
assert_true(referencing_element[reflected_property] instanceof DOMTokenList);
assert_array_equals(Array.from(referencing_element[reflected_property]), ["host-id"]);
}
referencing_element.remove();
host_container.setHTMLUnsafe("");
}, `${referencing_element_type}.${reflected_property} has reflection behavior ${expected_behavior} when pointing to ${referenced_element_type} with reference target${element_creation_method.name}`);
}
const element_creation_methods = [
function appendTestDeclaratively(host_container, referenced_element_type) {
host_container.setHTMLUnsafe(`
<div id="host-id">
<template shadowrootmode="open" shadowrootreferencetarget="target">
<${referenced_element_type} id="target"></${referenced_element_type}>
</template>
</div>`);
const host = host_container.firstElementChild;
return host;
},
function appendTestWithOptions(host_container, referenced_element_type) {
host_container.setHTMLUnsafe('<div id="host-id"></div>');
const host = host_container.firstElementChild;
host.attachShadow({ mode: 'open', referenceTarget: 'target' });
host.shadowRoot.innerHTML = `<${referenced_element_type} id="target"></${referenced_element_type}>`;
return host;
}
];
element_creation_methods[0].name = '';
element_creation_methods[1].name = ' via options';
// We want to test types of elements that are associated with properties that can reflect other
// elements and can therefore interact with reference target in interesting ways.
// while non_labelable_element_types is a manually curated list of other elements with
// reflecting properties (plus div as representative of more "normal" elements).
// We'll test all permutations of these element types being both the referencing element
// pointing into the reference target shadow host, and being the referenced element inside
// the shadow.
const non_labelable_element_types = ["div", "object", "label", "fieldset", "legend", "option", "datalist", "form"];
const element_types = HTML5_LABELABLE_ELEMENTS.concat(non_labelable_element_types);
for(let element_creation_method of element_creation_methods) {
for(let referencing_element_type of element_types) {
for(let referenced_element_type of element_types) {
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "aria-controls", "ariaControlsElements", Behavior.ReflectsHostInArray);
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "aria-activedescendant", "ariaActiveDescendantElement", Behavior.ReflectsHost);
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "aria-describedby", "ariaDescribedByElements", Behavior.ReflectsHostInArray);
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "aria-details", "ariaDetailsElements", Behavior.ReflectsHostInArray);
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "aria-errormessage", "ariaErrorMessageElements", Behavior.ReflectsHostInArray);
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "aria-flowto", "ariaFlowToElements", Behavior.ReflectsHostInArray);
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "aria-labeledby", "ariaLabelledByElements", Behavior.ReflectsHostInArray);
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "aria-owns", "ariaOwnsElements", Behavior.ReflectsHostInArray);
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "anchor", "anchorElement", Behavior.ReflectsHost);
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "commandfor", "commandForElement", Behavior.ReflectsHost);
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "popovertarget", "popoverTargetElement", Behavior.ReflectsHost);
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "interesttarget", "interestTargetElement", Behavior.ReflectsHost);
const expected_htmlFor_property_behavior = (referencing_element_type == "output") ? Behavior.ReflectsHostIDInDOMTokenList : Behavior.ReflectsHostID;
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "for", "htmlFor", expected_htmlFor_property_behavior);
// It's unclear whether `form` and `list` should return null or should return the
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "form", "form", Behavior.IsNull);
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "list", "list", Behavior.IsNull);
// It's unclear whether this should always reflect the host even if the underlying
// referenced element isn't labelable. See
const expected_control_property_behavior = HTML5_LABELABLE_ELEMENTS.includes(referenced_element_type) ? Behavior.ReflectsHost : Behavior.IsNull;
test_property_reflection(element_creation_method, referencing_element_type, referenced_element_type, "for", "control", expected_control_property_behavior);
}
}
}
</script>
</body>
</html>