| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>HTML Test: Use tab to navigate the focus to an element inside shadow host with delegatesFocus</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/testdriver.js"></script> |
| <script src="/resources/testdriver-vendor.js"></script> |
| <script src="resources/shadow-utils.js"></script> |
| |
| <body> |
| <div id="host"></div> |
| </body> |
| |
| <script> |
| const host = document.getElementById("host"); |
| |
| const shadowRoot = host.attachShadow({ mode: "open", delegatesFocus: true }); |
| const input = document.createElement("input"); |
| shadowRoot.appendChild(input); |
| |
| promise_test(async function() { |
| assert_equals(document.activeElement, document.body); |
| // Press <tab> |
| await navigateFocusForward(); |
| assert_equals(document.activeElement, host); |
| assert_equals(shadowRoot.activeElement, input); |
| assert_true(host.matches(':focus')); |
| }, ":focus should be applied to the host when the focus is moved by <tab>"); |
| </script> |
