<!DOCTYPE html>
<title>Service Worker: 3P window for partitioned service workers</title>
<script src="test-helpers.sub.js"></script>
<script src="/common/get-host-info.sub.js"></script>


<body>
This page should be opened as a third-party window. It then loads an iframe
specified by the query parameter. Finally it forwards the postMessage from the
iframe up to the opener (the test).

<script>

async function onLoad() {
  const message_promise = new Promise(resolve => {
    self.addEventListener('message', evt => {
      resolve(evt.data);
    });
  });

  const search_param = new URLSearchParams(window.location.search);
  const iframe_url = search_param.get('target');

  var frame = document.createElement('iframe');
  frame.src = iframe_url;
  frame.style.position = 'absolute';
  document.body.appendChild(frame);


  await message_promise.then(data => {
    // We're done, forward the message and clean up.
    window.opener.postMessage(data, '*');

    frame.remove();
  });
}

self.addEventListener('load', onLoad);

</script>
</body>