1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
<!DOCTYPE html>
<meta name="author" title="Xiaocheng Hu" href="mailto:xiaochengh@chromium.org">
<meta name="assert" content="Direct calls of custom element constructor use the global registry only">
<link rel="help" href="https://wicg.github.io/webcomponents/proposals/Scoped-Custom-Element-Registries">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
function attachShadowForTest(t, registry) {
const host = document.createElement('div');
const shadow = host.attachShadow({mode: 'open', registry});
document.body.appendChild(host);
t.add_cleanup(() => host.remove());
return shadow;
}
test(t => {
class TestElement extends HTMLElement {};
let registry = new CustomElementRegistry()
registry.define('test-element', TestElement);
let shadow = attachShadowForTest(t, registry);
assert_throws_js(TypeError, () => new TestElement);
}, 'Calling custom element constructor directly without global registration should fail');
test(t => {
class TestElement extends HTMLElement {};
window.customElements.define('global-test-element', TestElement);
let registry = new CustomElementRegistry()
registry.define('shadow-test-element', TestElement);
let shadow = attachShadowForTest(t, registry);
let element = new TestElement;
assert_equals(element.localName, 'global-test-element');
}, 'Calling custom element constructor directly uses global registration only');
</script>
</body>
|
