| <!DOCTYPE html> |
| <html> |
| <head> |
| <title>CSS Shadow Parts - Double forward</title> |
| <meta href="mailto:fergal@chromium.org" rel="author" title="Fergal Daly"> |
| <link href="http://www.google.com/" rel="author" title="Google"> |
| <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="support/shadow-helper.js"></script> |
| </head> |
| <body> |
| <style>#c-e-outer::part(part-forwarded2) { 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="green_part" part="partp">This text</span> |
| </template> |
| <script>installCustomElement("custom-element-middle", "custom-element-middle-template");</script> |
| <template id="custom-element-middle-template"><custom-element-inner id="c-e-inner" exportparts="partp: part-forwarded1"></custom-element-inner></template> |
| <script>installCustomElement("custom-element-outer", "custom-element-outer-template");</script> |
| <template id="custom-element-outer-template"><custom-element-middle id="c-e-middle" exportparts="part-forwarded1: part-forwarded2"></custom-element-middle></template> |
| The following text should be green: |
| <custom-element-outer id="c-e-outer"></custom-element-outer> |
| <script> |
| "use strict"; |
| const colorGreen = "rgb(0, 128, 0)"; |
| test(function() { |
| const el = getElementByShadowIds(document, ["c-e-outer", "c-e-middle", "c-e-inner", "green_part"]); |
| assert_equals(window.getComputedStyle(el).color, colorGreen); |
| }, "Part in inner host is forwarded through the middle host for styling by document style sheet"); |
| </script> |
| </body> |
| </html> |
