<!DOCTYPE html>
<html>
<head>
<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>
<script src="/common/get-host-info.sub.js"></script>
</head>
<body>
  <h1>Element.focus() shouldn't work in cross-origin iframe without user interaction.</h1>
  <iframe id="child" width="200" height="100"></iframe>

  <script>
    let parent_loaded = false;
    let child_loaded = false;

    async_test(function(t) {
      function pingChildIfBothFramesLoaded() {
        if (parent_loaded && child_loaded)
          frames[0].postMessage("attempt_to_focus", "*");
      }

      window.addEventListener("load", t.step_func(event => {
        parent_loaded = true;
        pingChildIfBothFramesLoaded();
      }));

      window.addEventListener("message", t.step_func(event => {
        if (event.data == "child_loaded") {
          child_loaded = true;
          pingChildIfBothFramesLoaded();
        } else if (event.data == "child_is_focused") {
          assert_unreached("The iframe shouldn't get focus");
        } else if (event.data == "child_is_not_focused") {
          t.done();
        }
      }));
      document.getElementById("child").src =
          get_host_info().HTTP_REMOTE_ORIGIN + "/WebKit/html/interaction/focus/resources/child-focus-element.html";
    }, "Element.focus() shouldn't work in cross-origin iframe without user interaction");
  </script>
</body>
</html>