interestevent-dispatch-shadow.tentative.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/semantics/the-button-element/interest-target/interestevent-dispatch-shadow.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset="utf-8" />

<link rel="author" title="Keith Cirkel" href="mailto:keithamus@github.com" >

<link rel="author" title="Luke Warlow" href="mailto:lwarlow@igalia.com" >

<link

  rel="help"

  href="https://open-ui.org/components/interest-invokers.explainer/"

/>

<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="resources/invoker-utils.js"></script>

<body>

  <script>

  test((t) => {

    const host = document.createElement("div");

    t.add_cleanup(() => host.remove());

    document.body.append(host);

    const shadow = host.attachShadow({ mode: "closed" });

    const slot = shadow.appendChild(document.createElement("slot"));

    let childEvent = null;

    let childEventTarget = null;

    let childEventSource = null;

    let hostEvent = null;

    let hostEventTarget = null;

    let hostEventSource = null;

    slot.addEventListener("interest", (e) => {

        childEvent = e;

        childEventTarget = e.target;

        childEventSource = e.source;

      }, { once: true });

    host.addEventListener("interest", (e) => {

        hostEvent = e;

        hostEventTarget = e.target;

        hostEventSource = e.source;

      }, { once: true });

    const event = new InterestEvent("interest", {

      bubbles: true,

      source: slot,

      composed: true,

});

    slot.dispatchEvent(event);

    assert_true(childEvent instanceof InterestEvent, "slot saw interest event");

    assert_equals(childEventTarget, slot, "target is child inside shadow boundary");

    assert_equals(childEventSource, slot, "source is child inside shadow boundary");

    assert_equals(hostEvent, childEvent, "event dispatch propagates across shadow boundary");

    assert_equals(hostEventTarget, host, "target is retargeted to shadowroot host");

    assert_equals(hostEventSource, host, "source is retargeted to shadowroot host");

  }, "InterestEvent propagates across shadow boundaries retargeting invoker source");

  promise_test(async (t) => {

    const host = document.createElement("div");

    t.add_cleanup(() => host.remove());

    document.body.append(host);

    const shadow = host.attachShadow({ mode: "open" });

    const button = shadow.appendChild(document.createElement("button"));

    const interestee = host.appendChild(document.createElement("div"));

    button.interestTargetElement = interestee;

    button.style = "interest-target-delay: 0s";

    let event = null;

    let eventTarget = null;

    let eventSource = null;

    interestee.addEventListener("interest", (e) => {

        event = e;

        eventTarget = e.target;

        eventSource = e.source;

      },{ once: true });

    await hoverOver(button);

    assert_true(!!event,"InterestEvent gets fired");

    assert_true(event instanceof InterestEvent);

    assert_equals(eventTarget, interestee, "target is interestee");

    assert_equals(eventSource, host, "interestee is host");

  }, "cross shadow InterestEvent retargets interestee to host element");

</script>