749993 - SpecialPowers.wrap()'ing a message manager doesn't work

Status: RESOLVED WORKSFORME

(Testing :: Mochitest, defect)

Description

[Justin Lebar (not reading bugmail)]

I added the following to specialpowersAPI.js:

 getBrowserFrameMessageManager: function(aFrameElement) {
   return this.wrap(aFrameElement.QueryInterface(Ci.nsIFrameLoaderOwner)
                                 .frameLoader
                                 .messageManager);
 }

(With my work in bug 749018, aFrameElement is an <iframe mozbrowser>.)  When I call e.g. loadFrameScript on the object getBrowserFrameMessageManager() returns, nothing happens.

If I instead don't wrap the message manager and call loadFrameScript from within specialpowersAPI.js, everything works as I expect.

Maybe I'm doing something wrong here, or maybe this isn't supposed to work.  But it would certainly be nice if it worked...

I'll post a testcase.

Comment 1

[Justin Lebar (not reading bugmail)]

Hm, and now that I'm recreating the code for the purposes of this testcase, it seems to work fine.

That was easy, I guess.