focus-tabindex-order-shadow-varying-tabindex-3.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /shadow-dom/focus/focus-tabindex-order-shadow-varying-tabindex-3.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8">

<title>HTML Test: focus - the sequential focus navigation order with nested shadow dom with varying tabindex values</title>

<link rel="help" href="https://html.spec.whatwg.org/multipage/interaction.html#sequential-focus-navigation">

<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>

<script>

promise_test(async () => {

  function createButtonInShadowDOM(host, parent) {

    const root = host.attachShadow({mode: "open"});

    root.innerHTML = "<input>";

    parent.appendChild(host);

    return root;

  const host1 = document.createElement("div");

  const root1 = createButtonInShadowDOM(host1, document.body);

  const forwarder = document.createElement("div");

  forwarder.setAttribute("tabindex", 0);

  document.body.appendChild(forwarder);

  const host2 = document.createElement("div");

  host2.setAttribute("tabindex", -1);

  const root2 = host2.attachShadow({mode: "open"});

  document.body.appendChild(host2);

  const host2_1 = document.createElement("div");

  const root2_1 = createButtonInShadowDOM(host2_1, root2);

  const host2_2 = document.createElement("div");

  host2_2.setAttribute("tabindex", -1);

  const root2_2 = createButtonInShadowDOM(host2_2, root2);

  const host2_3 = document.createElement("div");

  const root2_3 = createButtonInShadowDOM(host2_3, root2);

  root1.querySelector("input").focus();

  let forwarderFocused = false;

  forwarder.addEventListener("focus", () => {

    forwarderFocused = true;

    root2_2.querySelector("input").focus();

});

  // Structure:

  // <div #host1></div>

  //   #ShadowRoot

  //     <button>Button</button>

  // <div #forwarder tabindex=0></div>

  // <div #host2 tabindex=-1></div>

  //   #ShadowRoot

  //     <div #host2_1></div>

  //       #ShadowRoot

  //         <button>Button</button>

  //     <div #host2_2 tabindex=-1></div>

  //       #ShadowRoot

  //         <button>Button</button>

  //     <div #host2_3></div>

  //       #ShadowRoot

  //         <button>Button</button>

  assert_equals(document.activeElement, host1);

  assert_equals(root1.activeElement, root1.querySelector("input"));

  await navigateFocusForward();

  assert_true(forwarderFocused);

  assert_equals(document.activeElement, host2);

  assert_equals(root2_2.activeElement, root2_2.querySelector("input"));

  // In buggy Firefox build, the following focus navigation will

  // move the focus back to #host1_1's button.

  await navigateFocusForward();

  assert_equals(document.activeElement, host2);

  assert_equals(root2_3.activeElement, root2_3.querySelector("input"));

}, "Order with different tabindex on host")

</script>