913626 - window.opener always returns null

Status: RESOLVED INVALID

(Firefox :: Untriaged, defect)

Description

[digitalcre8]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1612.2 Safari/537.36

Steps to reproduce:

Calling window.opener from a window that has been opened via window.open() returns null.  
- You can try opening this page:  http://www.w3schools.com/js/tryit.asp?filename=try_win_opener
- Change the line to  ***  myWindow.document.write(window.opener);  ***

You can try any other combo, like parent.window.opener, top.opener, etc and it doesn't work.  


Actual results:

The popup window says "null."  


Expected results:

It should say [object Window].

Comment 1

[Cork]

Attachment: popup.html

Comment 2

[Cork]

Attachment: parent.html

Both the parent.html testcase and the example at w3schools.com works for me.

What version of firefox was this tested on?
And doesn't the testcase work for you?

Comment 3

[digitalcre8]

Your test files worked for me.  I think that I'm running into security issues or something because I am trying to detect whether a window is a popup (has an opener) using a FF extension.

Comment 4

[digitalcre8]

I'm following up on this bug. Indeed, FF extensions need to use an XPCNativeWrapper to access or detect the opener.  Otherwise, it returns null.  I got it working using this method.