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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1690747
-->
<head>
  <title>Test for Bug 1690747</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1690747">Mozilla Bug 1690747</a>
<p id="display"></p>
<div id='content'>
</div>
<pre id="test">
<iframe src="https://example.org/tests/dom/base/test/file_focus_design_mode_inner.html"></iframe>
<script type="application/javascript">

/** Test for Bug 1690747 **/

let iframe = document.querySelector("iframe");

function waitForEvent(target, event, checkFn) {
  return new Promise(resolve => {
    target.addEventListener(event, e => {
      if (checkFn && !checkFn(e)) {
        return;
      }
      resolve();
    }, { once: true });
  });
}

async function getLog() {
  let log = "";
  SimpleTest.executeSoon(function() {
    iframe.contentWindow.postMessage("getlog", "*");
  });
  await waitForEvent(window, "message", (e) => {
    log = e.data;
    return true;
  });
  return log;
}

add_setup(async function() {
  await SpecialPowers.pushPrefEnv({ set: [["dom.disable_window_flip", true]] });
});

add_task(async function activeElementAfterBluring() {
  iframe.contentWindow.postMessage("focus", "*");
  is(await getLog(), "innerlog:windowfocus,activeElement:HTML,", "check activeElement");
  iframe.contentWindow.blur();
  is(await getLog(), "innerlog:windowfocus,activeElement:HTML,activeElement:HTML,", "check activeElement after bluring");
});

</script>
</pre>
</body>
</html>