<!doctype html>
<script>
  dump("Content running top level script " + window.location.href + "\n");

  var winID = SpecialPowers.wrap(this).windowGlobalChild.innerWindowId;

  var observer = {
    observe(subject, topic) {
      var currID = SpecialPowers.wrap(subject).QueryInterface(SpecialPowers.Ci.nsISupportsPRUint64).data;
      if (currID != winID) {
        return;
      }
      // We should be able to wrap the inner window when the outer
      // window has navigated out of process.
      SpecialPowers.Cu.getGlobalForObject({});

      SpecialPowers.removeObserver(observer, "inner-window-nuked");
    }
  };
  SpecialPowers.addObserver(observer, "inner-window-nuked");

  // Unfortunately, we don't currently fire the onload event on a remote iframe,
  // so we can't listen for the load event directly on the iframe. Instead, we
  // postMessage from the iframe when the load event would be fired.
  window.addEventListener("load", function onload() {
    dump("Content got load of " + window.location.href + "\n");
    if (window.parent) {
      window.parent.postMessage({
        event: "load",
        location: window.location.href,
      }, "*");
    }

    let h1 = document.createElement("h1");
    h1.textContent = window.location.href;
    document.body.appendChild(h1);
  }, { once: true });

  // In addition, we listen to the message event to trigger navigations of
  // ourself when requested, as we don't fully support our embedder triggering
  // us being navigated yet for Totally Not Buggy Reasons.
  window.addEventListener("message", function onmessage(event) {
    dump("Content got event " + window.location.href + " " + JSON.stringify(event.data) + "\n");
    if (event.data.action === "navigate") {
      window.location = event.data.location;
    }
  });
</script>
