| <!doctype html> |
| <meta charset="utf-8"> |
| <title>CSS Shadow Parts - Invalidation Change Part Name on pseudo</title> |
| <link rel="help" href="https://drafts.csswg.org/css-shadow-parts/"> |
| <link rel="author" href="mailto:[email protected]" title="Emilio Cobos Álvarez"> |
| <link rel="author" href="https://mozilla.org" title="Mozilla"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="support/shadow-helper.js"></script> |
| <style>#c-e::part(partp)::before { color: red; }</style> |
| <script>installCustomElement("custom-element", "custom-element-template");</script> |
| <template id="custom-element-template"> |
| <style>span::before { content: ""; color: green; }</style> |
| <span id="part" part="partp">This text</span> |
| </template> |
| The following text should be green: |
| <div><custom-element id="c-e"></custom-element></div> |
| <script> |
| "use strict"; |
| test(function() { |
| const part = getElementByShadowIds(document, ["c-e", "part"]); |
| const before = getComputedStyle(part, "::before").color; |
| part.setAttribute("part", "somethingelse"); |
| const after = getComputedStyle(part, "::before").color; |
| assert_not_equals(before, after); |
| }, "Part in selected host changed color"); |
| </script> |
