128 lines
5.5 KiB
HTML
128 lines
5.5 KiB
HTML
<!DOCTYPE html>
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<meta name="author" title="Xiaocheng Hu" href="mailto:xiaochengh@chromium.org">
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<meta name="assert" content="Custom element constructors can re-enter with different definitions">
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<link rel="help" href="https://wicg.github.io/webcomponents/proposals/Scoped-Custom-Element-Registries">
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<link rel="help" href="https://github.com/WICG/webcomponents/issues/969">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<div id="testdiv"></div>
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<script>
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class GloballyScopedElement extends HTMLElement {};
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customElements.define('globally-scoped', GloballyScopedElement);
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class TestAutonomous extends HTMLElement {};
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class TestCustomizedBuiltIn extends HTMLParagraphElement {};
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function attachShadowForTest(t, registry) {
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const host = document.createElement('div');
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const shadow = host.attachShadow({mode: 'open', registry});
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document.body.appendChild(host);
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t.add_cleanup(() => host.remove());
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return shadow;
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}
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test(t => {
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const registry = new CustomElementRegistry;
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registry.define('test-element', TestAutonomous);
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const shadow = attachShadowForTest(t, registry);
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shadow.innerHTML = '<test-element></test-element>';
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assert_true(shadow.firstChild instanceof TestAutonomous, 'target tree scope');
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// Verify that it doesn't pollute other tree scopes.
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const shadow2 = attachShadowForTest(t);
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shadow2.innerHTML = '<test-element></test-element>';
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assert_false(shadow2.firstChild instanceof TestAutonomous, 'tree scope without registry');
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const shadow3 = attachShadowForTest(t, new CustomElementRegistry);
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shadow3.innerHTML = '<test-element></test-element>';
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assert_false(shadow3.firstChild instanceof TestAutonomous, 'tree scope with different registry');
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t.add_cleanup(() => testdiv.firstChild.remove());
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testdiv.innerHTML = '<test-element></test-element>';
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assert_false(testdiv.firstChild instanceof TestAutonomous, 'main document');
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}, 'Upgrade into autonomous custom element when inserted via innerHTML');
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test(t => {
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const registry = new CustomElementRegistry;
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const shadow = attachShadowForTest(t, registry);
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shadow.innerHTML = '<test-element></test-element>';
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const shadow2 = attachShadowForTest(t);
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shadow2.innerHTML = '<test-element></test-element>';
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const shadow3 = attachShadowForTest(t, new CustomElementRegistry);
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shadow3.innerHTML = '<test-element></test-element>';
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t.add_cleanup(() => testdiv.firstChild.remove());
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testdiv.innerHTML = '<test-element></test-element>';
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registry.define('test-element', TestAutonomous);
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// Elements in the target tree scope should be upgraded.
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assert_true(shadow.firstChild instanceof TestAutonomous, 'target tree scope');
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// Verify that it doesn't pollute other tree scopes.
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assert_false(shadow2.firstChild instanceof TestAutonomous, 'tree scope without registry');
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assert_false(shadow3.firstChild instanceof TestAutonomous, 'tree scope with different registry');
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assert_false(testdiv.firstChild instanceof TestAutonomous, 'main document');
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}, 'Upgrade into autonomous custom element when definition is added');
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test(t => {
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const registry = new CustomElementRegistry;
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registry.define('test-element', TestCustomizedBuiltIn, {extends: 'p'});
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const shadow = attachShadowForTest(t, registry);
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shadow.innerHTML = '<p is="test-element"></p>';
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assert_true(shadow.firstChild instanceof TestCustomizedBuiltIn, 'target tree scope');
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// Verify that it doesn't pollute other tree scopes.
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const shadow2 = attachShadowForTest(t);
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shadow2.innerHTML = '<p is="test-element"></p>';
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assert_false(shadow2.firstChild instanceof TestCustomizedBuiltIn, 'tree scope without registry');
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const shadow3 = attachShadowForTest(t, new CustomElementRegistry);
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shadow3.innerHTML = '<p is="test-element"></p>';
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assert_false(shadow3.firstChild instanceof TestCustomizedBuiltIn, 'tree scope with different registry');
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t.add_cleanup(() => testdiv.firstChild.remove());
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testdiv.innerHTML = '<p is="test-element"></p>';
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assert_false(testdiv.firstChild instanceof TestCustomizedBuiltIn, 'main document');
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}, 'Upgrade into customized built-in element when inserted via innerHTML');
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test(t => {
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const registry = new CustomElementRegistry;
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const shadow = attachShadowForTest(t, registry);
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shadow.innerHTML = '<p is="test-element"></p>';
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const shadow2 = attachShadowForTest(t);
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shadow2.innerHTML = '<p is="test-element"></p>';
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const shadow3 = attachShadowForTest(t, new CustomElementRegistry);
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shadow3.innerHTML = '<p is="test-element"></p>';
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t.add_cleanup(() => testdiv.firstChild.remove());
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testdiv.innerHTML = '<p is="test-element"></p>';
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registry.define('test-element', TestCustomizedBuiltIn, {extends: 'p'});
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// Elements in the target tree scope should be upgraded.
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assert_true(shadow.firstChild instanceof TestCustomizedBuiltIn, 'target tree scope');
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// Verify that it doesn't pollute other tree scopes.
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assert_false(shadow2.firstChild instanceof TestCustomizedBuiltIn, 'tree scope without registry');
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assert_false(shadow3.firstChild instanceof TestCustomizedBuiltIn, 'tree scope with different registry');
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assert_false(testdiv.firstChild instanceof TestCustomizedBuiltIn, 'main document');
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}, 'Upgrade into customized built-in element when definition is added');
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test(t => {
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const registry = new CustomElementRegistry;
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const shadow = attachShadowForTest(t, registry);
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shadow.innerHTML = '<globally-scoped></globally-scoped>';
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assert_false(shadow.firstChild instanceof GloballyScopedElement, 'is not GloballyScoped');
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}, 'Upgrade into autonomous custom element should not inherit from global registry for missing values');
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</script>
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