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<!doctype html>
<meta charset="utf-8" />
<meta name="author" title="Keith Cirkel" href="mailto:wpt@keithcirkel.co.uk" />
<link rel="help" href="https://open-ui.org/components/invokers.explainer/" />
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<button id="invoker" commandfor="invokee" command="test"></button>
<div id="invokee"></div>
<script>
test(function () {
assert_equals(invoker.commandForElement, invokee);
}, "commandForElement reflects invokee HTML element");
test(function () {
const div = document.body.appendChild(document.createElement("div"));
invoker.commandForElement = div;
assert_equals(invoker.commandForElement, div);
assert_equals(invoker.getAttribute("commandfor"), "");
assert_equals(invoker.getAttribute("command"), "test");
}, "commandForElement reflects set value");
test(function () {
const host = document.body.appendChild(document.createElement("div"));
const shadow = host.attachShadow({ mode: "open" });
const button = shadow.appendChild(document.createElement("button"));
button.commandForElement = invokee;
assert_equals(button.commandForElement, invokee);
assert_equals(invoker.getAttribute("commandfor"), "");
assert_equals(invoker.getAttribute("command"), "test");
}, "commandForElement reflects set value across shadow root into light dom");
test(function () {
const host = document.body.appendChild(document.createElement("div"));
const shadow = host.attachShadow({ mode: "open" });
const div = shadow.appendChild(document.createElement("div"));
invoker.commandForElement = div;
assert_equals(invoker.commandForElement, null);
assert_equals(invoker.getAttribute("commandfor"), "");
assert_equals(invoker.getAttribute("command"), "test");
}, "commandForElement does not reflect set value inside shadowroot");
test(function () {
assert_throws_js(
TypeError,
function () {
invoker.commandForElement = {};
},
"commandForElement attribute must be an instance of Element",
);
}, "commandForElement throws error on assignment of non Element");
test(function () {
invoker.setAttribute("command", "");
assert_equals(invoker.getAttribute("command"), "");
assert_equals(invoker.command, "");
}, "command reflects '' when attribute empty, setAttribute version");
test(function () {
invoker.command = "fooBarBaz";
assert_equals(invoker.getAttribute("command"), "fooBarBaz");
assert_equals(invoker.command, "");
}, "command reflects correctly for invalid");
test(function () {
invoker.command = "";
assert_equals(invoker.getAttribute("command"), "");
assert_equals(invoker.command, "");
}, "command reflects '' when attribute empty, IDL version");
test(function () {
invoker.command = [1, 2, 3];
assert_equals(invoker.getAttribute("command"), "1,2,3");
assert_equals(invoker.command, "");
}, "command reflects correctly for invalid when array");
test(function () {
invoker.command = [];
assert_equals(invoker.getAttribute("command"), "");
assert_equals(invoker.command, "");
}, "command reflects '' when attribute set to []");
test(function () {
invoker.command = {};
assert_equals(invoker.command, "");
}, "command reflects correctly for invalid when object");
</script>
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