wpt/css/selectors/user-action-pseudo-top-layer.html at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<meta charset="utf-8">
<link rel="help" href="https://www.w3.org/TR/selectors-4/#useraction-pseudos">
<meta name="author" href="mailto:masonf@chromium.org">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/html/semantics/interestfor/resources/invoker-utils.js"></script>

<style>
/* Make elements large enough to click and separate them to prevent overlap */
#container * {
  min-width: 50px;
  min-height: 50px;
}
/* Ensure top layer elements do not overlap with body or container when clicked */
dialog,
[popover] {
  top: 100px;
  left: 100px;
  margin: 0;
}
select,
::picker(select) {
  appearance: base-select;
}
</style>

<div id="container"></div>

<script>
function createTestElement(type, state) {
  const container = document.getElementById('container');

  let topLayerElement = undefined;
  let selectElement = undefined;
  let button;

  if (type === 'popover') {
    topLayerElement = document.createElement('div');
    topLayerElement.setAttribute('popover', 'auto');
    button = document.createElement('button');
    button.textContent = 'Button';
    topLayerElement.appendChild(button);
    container.appendChild(topLayerElement);
    topLayerElement.showPopover();
  } else if (type === 'customizable-select') {
    selectElement = document.createElement('select');
    button = document.createElement('option');
    button.textContent = 'Option';
    selectElement.appendChild(button);
    container.appendChild(selectElement);
    // topLayerElement remains undefined because the top layer element
    // is the select picker pseudo-element which we cannot query directly.
  } else {
    topLayerElement = document.createElement('dialog');
    button = document.createElement('button');
    button.textContent = 'Button';
    topLayerElement.appendChild(button);
    container.appendChild(topLayerElement);
    if (state === 'modal') {
      topLayerElement.showModal();
    } else {
      topLayerElement.show();
    }
  }

  return { container, topLayerElement, selectElement, button };
}

function cleanUp() {
  document.getElementById('container').innerHTML = '';
  // Reset mouse position to avoid state leaking between tests
  return new test_driver.Actions().pointerMove(0, 0).send();
}

const tests = [
  { type: 'dialog', state: 'modal', topLayer: true },
  { type: 'dialog', state: 'non-modal', topLayer: false },
  { type: 'popover', state: 'popover', topLayer: true },
  { type: 'customizable-select', state: 'open', topLayer: true },
];

tests.forEach(({ type, state, topLayer }) => {
  promise_test(async (t) => {
    t.add_cleanup(cleanUp);
    const { container, topLayerElement, selectElement, button } = createTestElement(type, state);

    if (type === 'customizable-select') {
      const style = getComputedStyle(selectElement);
      assert_implements_optional(style.appearance === 'base-select',
              "appearance: base-select is not supported on this browser");

      await test_driver.bless('open picker');
      selectElement.showPicker();
      await waitForRender();
      assert_true(selectElement.matches(':open'), 'select should be open');
    }

    await waitForRender();

    // Focus test
    button.focus();
    assert_true(button.matches(':focus-within'), 'button has :focus-within');
    if (topLayerElement) {
      assert_true(topLayerElement.matches(':focus-within'), `${type} should match :focus-within`);
    }

    if (topLayer) {
      assert_false(
        container.matches(':focus-within'),
        'container should not have :focus-within for top layer elements',
      );
      assert_false(
        document.body.matches(':focus-within'),
        'body should not have :focus-within for top layer elements',
      );
    } else {
      assert_true(
        container.matches(':focus-within'),
        'container should have :focus-within for non-top layer elements',
      );
      assert_true(
        document.body.matches(':focus-within'),
        'body should have :focus-within for non-top layer elements',
      );
    }
    button.blur();

    // Hover test
    await hoverOver(button);

    assert_true(button.matches(':hover'), 'button has :hover');
    if (topLayerElement) {
      assert_true(topLayerElement.matches(':hover'), `${type} should match :hover`);
    }

    if (topLayer) {
      assert_false(container.matches(':hover'), 'container should not have :hover for top layer elements');
      assert_false(document.body.matches(':hover'), 'body should not have :hover for top layer elements');
    } else {
      assert_true(container.matches(':hover'), 'container should have :hover for non-top layer elements');
      assert_true(document.body.matches(':hover'), 'body should have :hover for non-top layer elements');
    }

    // Active test requires monitoring inside event listener because pointerDown might auto-pointerUp
    let buttonMatchedActive = false;
    let topLayerMatchedActive = false;
    let containerMatchedActive = false;
    let bodyMatchedActive = false;
    button.addEventListener('mousedown', () => {
      buttonMatchedActive = button.matches(':active');
      if (topLayerElement) {
        topLayerMatchedActive = topLayerElement.matches(':active');
      }
      containerMatchedActive = container.matches(':active');
      bodyMatchedActive = document.body.matches(':active');
    });

    await clickOn(button);

    assert_true(buttonMatchedActive, 'button has :active');
    if (topLayerElement) {
      assert_true(topLayerMatchedActive, `${type} should match :active`);
    }

    if (topLayer) {
      assert_false(containerMatchedActive, 'container should not have :active for top layer elements');
      assert_false(bodyMatchedActive, 'body should not have :active for top layer elements');
    } else {
      assert_true(containerMatchedActive, 'container should have :active for non-top layer elements');
      assert_true(bodyMatchedActive, 'body should have :active for non-top layer elements');
    }
  }, `User action pseudo-classes on ${type} (${state})`);
});
</script>