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diff --git a/testing/web-platform/tests/css/selectors/focus-visible-028.html b/testing/web-platform/tests/css/selectors/focus-visible-028.html new file mode 100644 index 0000000000..a8b704838b --- /dev/null +++ b/testing/web-platform/tests/css/selectors/focus-visible-028.html @@ -0,0 +1,84 @@ +<!DOCTYPE html> +<html> +<head> + <meta charset="utf-8" /> + <title>CSS Test (Selectors): Programmatic focus causes :focus-visible to match after keyboard usage when preventDefault() is used</title> + <link rel="author" title="Tyler Jones" href="tylerjdev@github.com" /> + <link rel="help" href="https://drafts.csswg.org/selectors-4/#the-focus-visible-pseudo" /> + <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> + <style> + @supports not selector(:focus-visible) { + :focus { + outline: red solid 5px; + background-color: red; + } + } + + :focus-visible { + outline: blue solid 5px; + } + + :focus:not(:focus-visible) { + outline: 0; + background-color: lime; + } + </style> +</head> +<body> + This test checks that programmatically focusing an element after a click and using keyboard afterwards triggers <code>:focus-visible</code> matching. + <ol id="instructions"> + <li>If the user-agent does not claim to support the <code>:focus-visible</code> pseudo-class then SKIP this test.</li> + <li>Click the button below that says "Click me".</li> + <li>Once focused on the button that says "I will be focused programmatically", use "Left" or "Right" arrow keys to navigate through the button group</li> + <li>If any button within the group has a blue outline after using either arrow key, then the test result is SUCCESS. If the element has a green background after using either arrow key, then the test result is FAILURE.</li> + </ol> + <br /> + <button id="button">Click me</button> + <div id="container"> + <button id="btn1">I will be focused programmatically.</button> + <button id="btn2">Button 2</button> + <button id="btn3">Button 3</button> + </div> + <script> + button.addEventListener("click", () => { + btn1.focus(); + }); + + focusTrap(document.querySelector('#container')); + + function focusTrap(container) { + container.addEventListener('keydown', (e) => { + if (e.key !== 'ArrowRight' && e.key !== 'ArrowLeft') return; + e.preventDefault(); + + const btns = container.querySelectorAll('button'); + const currentIndex = Array.from(btns).indexOf(document.activeElement); + let nextIndex; + + if (e.key === 'ArrowRight') { + nextIndex = (currentIndex + 1) % btns.length; + } else if (e.key === 'ArrowLeft') { + nextIndex = (currentIndex - 1 + btns.length) % btns.length; + } + + btns[nextIndex].focus(); + }); + } + + promise_test(async t => { + const arrow_right = "\uE014"; + btn2.addEventListener("focus", t.step_func_done((e) => { + assert_equals(getComputedStyle(btn2).outlineColor, "rgb(0, 0, 255)", `outlineColor for ${btn2.tagName}#${btn2.id} is blue`); + assert_not_equals(getComputedStyle(btn2).backgroundColor, "rgb(0, 255, 0)", `backgroundColor for ${btn2.tagName}#${btn2.id} is NOT lime`); + })); + + await test_driver.click(button); + assert_equals(document.activeElement, btn1); + await test_driver.send_keys(btn1, arrow_right); + }, "Programmatic focus after click and keyboard interaction should match :focus-visible"); + </script> +</body> +</html>
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