dom/tests/browser/file_postMessage_parent.html

   1 <!doctype html>
   2 <script>
   3   dump("Content running top level script " + window.location.href + "\n");
   4
   5   var winID = SpecialPowers.wrap(this).windowGlobalChild.innerWindowId;
   6
   7   var observer = {
   8     observe(subject) {
   9       var currID = SpecialPowers.wrap(subject).QueryInterface(SpecialPowers.Ci.nsISupportsPRUint64).data;
  10       if (currID != winID) {
  11         return;
  12       }
  13       // We should be able to wrap the inner window when the outer
  14       // window has navigated out of process.
  15       SpecialPowers.Cu.getGlobalForObject({});
  16
  17       SpecialPowers.removeObserver(observer, "inner-window-nuked");
  18     }
  19   };
  20   SpecialPowers.addObserver(observer, "inner-window-nuked");
  21
  22   // Unfortunately, we don't currently fire the onload event on a remote iframe,
  23   // so we can't listen for the load event directly on the iframe. Instead, we
  24   // postMessage from the iframe when the load event would be fired.
  25   window.addEventListener("load", function onload() {
  26     dump("Content got load of " + window.location.href + "\n");
  27     if (window.parent) {
  28       window.parent.postMessage({
  29         event: "load",
  30         location: window.location.href,
  31       }, "*");
  32     }
  33
  34     let h1 = document.createElement("h1");
  35     h1.textContent = window.location.href;
  36     document.body.appendChild(h1);
  37   }, { once: true });
  38
  39   // In addition, we listen to the message event to trigger navigations of
  40   // ourself when requested, as we don't fully support our embedder triggering
  41   // us being navigated yet for Totally Not Buggy Reasons.
  42   window.addEventListener("message", function onmessage(event) {
  43     dump("Content got event " + window.location.href + " " + JSON.stringify(event.data) + "\n");
  44     if (event.data.action === "navigate") {
  45       window.location = event.data.location;
  46     }
  47   });
  48 </script>