wpt/css/css-pseudo/events-on-pseudo-element-shadow-dom.html at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=help href="https://github.com/w3c/uievents/pull/413">
<link rel=help href="https://drafts.csswg.org/css-pseudo/#CSSPseudoElement-interface">
<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>

<style>
  #host {
    margin: 20px;
  }
  #host2 {
    margin: 20px;
  }
  #host2::before {
    content: "HOST_BEFORE";
    display: block;
    width: 100px;
    height: 100px;
    background: red;
  }
  #host3 {
    margin: 20px;
  }
  #host4 {
    margin: 20px;
  }
  #host4::before {
    content: "before";
    display: list-item;
    list-style-position: inside;
    height: 40px;
  }
  #host4::after {
    content: "after";
    display: list-item;
    list-style-position: inside;
    height: 40px;
  }
  #host4::before::marker {
    content: "before-marker";
    font-size: 20px;
  }
  #host4::after::marker {
    content: "after-marker";
    font-size: 20px;
  }
</style>

<div id=host>
  <template shadowrootmode=open>
    <style>
      #inner::before {
        content: "BEFORE";
        display: block;
        width: 100px;
        height: 100px;
        background: blue;
      }
    </style>
    <div id=inner></div>
  </template>
</div>

<div id=host2>
  <template shadowrootmode=open>
  </template>
</div>

<div id=host3>
  <template shadowrootmode=open>
    <style>
      #inner3::before {
        content: "before";
        display: list-item;
        list-style-position: inside;
        height: 40px;
      }
      #inner3::after {
        content: "after";
        display: list-item;
        list-style-position: inside;
        height: 40px;
      }
      #inner3::before::marker {
        content: "before-marker";
        font-size: 20px;
      }
      #inner3::after::marker {
        content: "after-marker";
        font-size: 20px;
      }
    </style>
    <div id=inner3></div>
  </template>
</div>

<div id=host4>
  <template shadowrootmode=open>
  </template>
</div>

<script>
  promise_test(async () => {
    const host = document.getElementById('host');
    const shadowRoot = host.shadowRoot;
    const inner = shadowRoot.getElementById('inner');

    let innerPseudoTarget = undefined;
    let hostPseudoTarget = undefined;
    let clickEvent = undefined;

    inner.addEventListener('click', event => {
      innerPseudoTarget = event.pseudoTarget;
      clickEvent = event;
    });
    host.addEventListener('click', event => {
      hostPseudoTarget = event.pseudoTarget;
    });

    const pseudo = inner.pseudo('::before');
    const rect = inner.getBoundingClientRect();
    const x = rect.left + 50;
    const y = rect.top + 50;

    await new test_driver.Actions()
      .pointerMove(x, y)
      .pointerDown()
      .pointerUp()
      .send();

    assert_not_equals(innerPseudoTarget, undefined,
      'Inner listener should have fired');
    assert_not_equals(hostPseudoTarget, undefined,
      'Host listener should have fired');

    assert_equals(innerPseudoTarget, pseudo,
      'Inside shadow DOM: pseudoTarget should be the CSSPseudoElement');
    assert_equals(hostPseudoTarget, null,
      'Outside shadow DOM (retargeted): pseudoTarget should be null');
    assert_equals(clickEvent.pseudoTarget, null,
      'After dispatch, pseudoTarget should be null');
  }, 'event.pseudoTarget is null when retargeted across shadow boundary');

  promise_test(async () => {
    const host2 = document.getElementById('host2');

    let hostPseudoTarget = undefined;
    let clickEvent = undefined;

    host2.addEventListener('click', event => {
      hostPseudoTarget = event.pseudoTarget;
      clickEvent = event;
    });

    const pseudo = host2.pseudo('::before');
    const rect = host2.getBoundingClientRect();
    const x = rect.left + 50;
    const y = rect.top + 50;

    await new test_driver.Actions()
      .pointerMove(x, y)
      .pointerDown()
      .pointerUp()
      .send();

    assert_equals(hostPseudoTarget, pseudo,
      'pseudoTarget should be the CSSPseudoElement during event dispatch.');
    assert_equals(clickEvent.pseudoTarget, null,
      'pseudoTarget should be null after event dispatch.');
  }, 'event.pseudoTarget is preserved when clicking host pseudo-element');

  for (const pseudoType of ['::before', '::after']) {
    promise_test(async () => {
      const host3 = document.getElementById('host3');
      const shadowRoot = host3.shadowRoot;
      const inner3 = shadowRoot.getElementById('inner3');

      let innerPseudoTarget = undefined;
      let hostPseudoTarget = undefined;
      let clickEvent = undefined;

      inner3.addEventListener('click', event => {
        innerPseudoTarget = event.pseudoTarget;
        clickEvent = event;
      });
      host3.addEventListener('click', event => {
        hostPseudoTarget = event.pseudoTarget;
      });

      const pseudo = inner3.pseudo(pseudoType).pseudo('::marker');
      const rect = inner3.getBoundingClientRect();
      const x = rect.left + 15;
      const y = pseudoType === '::before' ? rect.top + 10 : rect.top + 50;

      await new test_driver.Actions()
        .pointerMove(x, y)
        .pointerDown()
        .pointerUp()
        .send();

      assert_not_equals(innerPseudoTarget, undefined,
        'Inner listener should have fired');
      assert_not_equals(hostPseudoTarget, undefined,
        'Host listener should have fired');

      assert_equals(innerPseudoTarget, pseudo,
        'Inside shadow DOM: pseudoTarget should be the CSSPseudoElement');
      assert_equals(hostPseudoTarget, null,
        'Outside shadow DOM (retargeted): pseudoTarget should be null');
      assert_equals(clickEvent.pseudoTarget, null,
        'After dispatch, pseudoTarget should be null');
    }, `event.pseudoTarget is null when clicking ${pseudoType}::marker retargeted across shadow boundary`);

    promise_test(async () => {
      const host4 = document.getElementById('host4');

      let hostPseudoTarget = undefined;
      let clickEvent = undefined;

      host4.addEventListener('click', event => {
        hostPseudoTarget = event.pseudoTarget;
        clickEvent = event;
      });

      const pseudo = host4.pseudo(pseudoType).pseudo('::marker');
      const rect = host4.getBoundingClientRect();
      const x = rect.left + 15;
      const y = pseudoType === '::before' ? rect.top + 10 : rect.top + 50;

      await new test_driver.Actions()
        .pointerMove(x, y)
        .pointerDown()
        .pointerUp()
        .send();

      assert_equals(hostPseudoTarget, pseudo,
        'pseudoTarget should be the CSSPseudoElement during event dispatch.');
      assert_equals(clickEvent.pseudoTarget, null,
        'pseudoTarget should be null after event dispatch.');
    }, `event.pseudoTarget is preserved when clicking host ${pseudoType}::marker pseudo-element`);
  }
</script>