31 lines
1.1 KiB
HTML
31 lines
1.1 KiB
HTML
<!DOCTYPE html>
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<title>Declarative Shadow DOM with shadow disabled</title>
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<link rel='author' href='mailto:masonf@chromium.org'>
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<link rel='help' href='https://github.com/whatwg/dom/issues/831'>
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<script src='/resources/testharness.js'></script>
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<script src='/resources/testharnessreport.js'></script>
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<body>
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<script>
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class ShadowDisabledElement extends HTMLElement {
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static get disabledFeatures() {
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return ['shadow'];
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}
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}
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customElements.define('shadow-disabled',ShadowDisabledElement);
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</script>
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<shadow-disabled>
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<template shadowrootmode="open"><span id=inside></span></template>
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</shadow-disabled>
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<script>
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test(t => {
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let element = document.querySelector('shadow-disabled');
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assert_true(element instanceof ShadowDisabledElement);
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let template = element.querySelector('template');
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assert_true(!!template, 'Declarative shadow attach should fail, since shadow-disabled is true');
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assert_true(!element.shadowRoot, 'Shadow root should not be present on custom element');
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}, 'Declarative Shadow DOM: declarative shadow should fail if attachShadow() already called');
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</script>
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</body>
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