slot-element-tabbable.tentative.html (2353B)
1 <!DOCTYPE html> 2 <title>CSS Test (Display): <slot> elements should be tabbable</title> 3 <link rel="author" title="L. David Baron" href="https://dbaron.org/"> 4 <link rel="author" title="Google" href="http://www.google.com/"> 5 <link rel="help" href="https://html.spec.whatwg.org/multipage/rendering.html#flow-content-3"> 6 <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/2632"> 7 <link rel="help" href="https://github.com/whatwg/html/issues/1837"> 8 <link rel="help" href="https://github.com/whatwg/html/pull/9425"> 9 <link rel="help" href="https://bugs.chromium.org/p/chromium/issues/detail?id=1366037"> 10 <!-- 11 12 This requirement is not particularly clear from current specs, 13 so this test is tentative. See issues above. 14 15 --> 16 <script src="/resources/testharness.js"></script> 17 <script src="/resources/testharnessreport.js"></script> 18 <script src="/resources/testdriver.js"></script> 19 <script src="/resources/testdriver-vendor.js"></script> 20 21 <body> 22 23 <div id="before" tabindex="1" style="height: 10px"></div> 24 25 <script> 26 27 function do_test(slot_style, description) { 28 promise_test( 29 async () => { 30 let before = document.getElementById("before"); 31 before.focus(); 32 let host = document.createElement("div"); 33 document.body.appendChild(host); 34 var root = host.attachShadow({mode:"open"}); 35 root.innerHTML = ` 36 <style> 37 slot { --test-value: slot-not-focused; } 38 slot:focus { --test-value: slot-is-focused; } 39 </style> 40 <slot tabindex="1" style="${slot_style}"></slot> 41 `; 42 let slot = root.querySelector("slot"); 43 let cs = getComputedStyle(slot); 44 assert_equals(document.activeElement, before, "precondition"); 45 assert_not_equals(root.activeElement, slot, "precondition"); 46 assert_equals(cs.getPropertyValue("--test-value"), "slot-not-focused", "precondition (style)"); 47 await test_driver.send_keys(before, "\uE004"); 48 assert_equals(root.activeElement, slot, "slot is now focused"); 49 assert_equals(cs.getPropertyValue("--test-value"), "slot-is-focused", "slot is now focused (style)"); 50 document.body.removeChild(host); 51 }, `slot element with ${description} should be focusable`); 52 } 53 54 do_test("display: block", "display: block"); 55 do_test("", "default style"); 56 57 </script>