test_panel_list_accessibility.html

Enable keyboard shortcuts

<!DOCTYPE HTML>

<!-- Any copyright is dedicated to the Public Domain.

     http://creativecommons.org/publicdomain/zero/1.0/ -->

<html>

<head>

  <title>Test Panel List Accessibility</title>

  <script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>

  <script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"></script>

  <script type="text/javascript" src="head.js"></script>

  <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css" />

</head>

<body>

<p id="display"></p>

<div id="content">

  <button id="anchor-button">Open</button>

  <panel-list id="panel-list">

    <panel-item>one</panel-item>

    <panel-item>two</panel-item>

    <panel-item>three</panel-item>

  </panel-list>

</div>

<pre id="test">

<script class="testbody" type="application/javascript">

const {BrowserTestUtils} = ChromeUtils.importESModule("resource://testing-common/BrowserTestUtils.sys.mjs");

let anchorButton, panelList, panelItems;

add_setup(function setup() {

  // Clear out the other elements so only our test content is on the page.

  panelList = document.getElementById("panel-list");

  panelItems = [...panelList.children];

  anchorButton = document.getElementById("anchor-button");

  anchorButton.addEventListener("click", e => panelList.toggle(e));

});

add_task(async function testItemFocusOnOpen() {

  ok(document.activeElement, "There is an active element");

  ok(!document.activeElement.closest("panel-list"), "Focus isn't in the list");

  let shown = BrowserTestUtils.waitForEvent(panelList, "shown");

  synthesizeMouseAtCenter(anchorButton, {});

  await shown;

  let hidden = BrowserTestUtils.waitForEvent(panelList, "hidden");

  synthesizeKey("Escape", {});

  await hidden;

  // Focus shouldn't enter the list on a click.

  ok(!document.activeElement.closest("panel-list"), "Focus isn't in the list");

  shown = BrowserTestUtils.waitForEvent(panelList, "shown");

  anchorButton.focus();

  synthesizeKey(" ", {});

  await shown;

  // Focus enters list with keyboard interaction.

  is(document.activeElement, panelItems[0], "The first item is focused");

  hidden = BrowserTestUtils.waitForEvent(panelList, "hidden");

  synthesizeKey("Escape", {});

  await hidden;

  is(document.activeElement, anchorButton, "The anchor is focused again on close");

});

add_task(async function testAriaAttributes() {

  is(panelList.getAttribute("role"), "menu", "The panel is a menu");

  is(panelItems.length, 3, "There are 3 items");

  for (let item of panelItems) {

    is(item.button.getAttribute("role"), "menuitem", "button is a menuitem");

});

</script>

</pre>

</body>

</html>