| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>CSS Shadow Parts - Invalidation with with class in descendant combinator and part forward</title> |
| <link href="http://www.apple.com/" rel="author" title="Apple"> |
| <link href="https://drafts.csswg.org/css-shadow-parts/" rel="help"> |
| <script src="../../../resources/testharness.js"></script> |
| <script src="../../../resources/testharnessreport.js"></script> |
| <script src="../../../imported/w3c/web-platform-tests/css/css-shadow-parts/support/shadow-helper.js"></script> |
| </head> |
| <body> |
| <style>.ancestor #c-e-outer::part(part-forwarded) { color: green; }</style> |
| <script>installCustomElement("custom-element-inner", "custom-element-inner-template");</script> |
| <template id="custom-element-inner-template"> |
| <style>span { color: red; }</style> |
| <span id="part" part="partp">This text</span> |
| </template> |
| <script>installCustomElement("custom-element-outer", "custom-element-outer-template");</script> |
| <template id="custom-element-outer-template"><custom-element-inner id="c-e-inner" exportparts="partp: part-forwarded"></custom-element-inner></template> |
| The following text should be green: |
| <div id="target"> |
| <div><custom-element-outer id="c-e-outer"></custom-element-outer></div> |
| </div> |
| <script> |
| "use strict"; |
| test(function() { |
| const part = getElementByShadowIds(document, ["c-e-outer", "c-e-inner", "part"]); |
| const before = window.getComputedStyle(part).color; |
| document.querySelector("#target").classList.add("ancestor"); |
| const after = window.getComputedStyle(part).color; |
| assert_not_equals(before, after); |
| }, "Part in selected host changed color"); |
| </script> |
| </body> |
| </html> |
