docshell/test/browser/file_bug1328501_framescript.js

   1 // Forward iframe loaded event.
   2
   3 /* eslint-env mozilla/frame-script */
   4
   5 addEventListener(
   6   "frames-loaded",
   7   () => sendAsyncMessage("test:frames-loaded"),
   8   true,
   9   true
  10 );
  11
  12 let requestObserver = {
  13   observe(subject, topic) {
  14     if (topic == "http-on-opening-request") {
  15       // Get DOMWindow on all child docshells to force about:blank
  16       // content viewers being created.
  17       getChildDocShells().map(ds => {
  18         ds
  19           .QueryInterface(Ci.nsIInterfaceRequestor)
  20           .getInterface(Ci.nsILoadContext).associatedWindow;
  21       });
  22     }
  23   },
  24   QueryInterface: ChromeUtils.generateQI(["nsIObserver"]),
  25 };
  26 Services.obs.addObserver(requestObserver, "http-on-opening-request");
  27 addEventListener("unload", e => {
  28   if (e.target == this) {
  29     Services.obs.removeObserver(requestObserver, "http-on-opening-request");
  30   }
  31 });
  32
  33 function getChildDocShells() {
  34   return docShell.getAllDocShellsInSubtree(
  35     Ci.nsIDocShellTreeItem.typeAll,
  36     Ci.nsIDocShell.ENUMERATE_FORWARDS
  37   );
  38 }