open-pseudo.html - mozsearch

Enable keyboard shortcuts

This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /css/selectors/open-pseudo.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<link rel=author href="mailto:jarhar@chromium.org">

<link rel=help href="https://drafts.csswg.org/selectors-4/#open-state">

<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>

dialog:open + #afterdialog,

details:open + #afterdetails,

select:open + #afterselect {

  will-change: text-decoration;

</style>

<dialog>dialog</dialog>

<p id="afterdialog"></p>

<details>details</details>

<p id="afterdetails"></p>

<select>

  <option>one</option>

</select>

<p id="afterselect"></p>

<script>

test(() => {

  const dialog = document.querySelector('dialog');

  const after = document.getElementById("afterdialog");

  assert_false(dialog.matches(':open'),

    ':open should not match when the dialog is closed.');

  assert_equals(getComputedStyle(after).willChange, "auto",

                ":open style should not be applied when the dialog is closed");

  dialog.show();

  assert_true(dialog.matches(':open'),

    ':open should match after dialog.show().');

  assert_equals(getComputedStyle(after).willChange, "text-decoration",

                ":open style should be applied after dialog.show()");

  dialog.close();

  assert_equals(getComputedStyle(after).willChange, "auto",

                ":open style should not be applied when the dialog is closed (2)");

  dialog.showModal();

  assert_true(dialog.matches(':open'),

    ':open should match after dialog.showModal().');

  assert_equals(getComputedStyle(after).willChange, "text-decoration",

                ":open style should be applied after dialog.showModal()");

  dialog.close();

  assert_equals(getComputedStyle(after).willChange, "auto",

                ":open style should not be applied when the dialog is closed (3)");

}, 'The dialog element should support :open.');

test(() => {

  const details = document.querySelector('details');

  const after = document.getElementById("afterdetails");

  assert_false(details.matches(':open'),

    ':open should not match when the details is closed.');

  assert_equals(getComputedStyle(after).willChange, "auto",

                ":open style should not be applied when the details is closed");

  details.open = true;

  assert_true(details.matches(':open'),

    ':open should match when the details is open.');

  assert_equals(getComputedStyle(after).willChange, "text-decoration",

                ":open style should be applied when the details is open");

}, 'The details element should support :open.');

promise_test(async () => {

  const select = document.querySelector('select');

  const after = document.getElementById("afterselect");

  assert_false(select.matches(':open'),

    ':open should not match when the select is closed.');

  assert_equals(getComputedStyle(after).willChange, "auto",

                ":open style should not be applied when the select is closed");

  await test_driver.click(select);

  await new Promise(requestAnimationFrame);

  assert_true(select.matches(':open'),

    ':open should match when the select is open.');

  assert_equals(getComputedStyle(after).willChange, "text-decoration",

                ":open style should be applied when the select is open");

}, 'The select element should support :open.');

</script>