FireFox application:closeTab does not work on firefox4?

seven_shen has asked for the wisdom of the Perl Monks concerning the following question:

I met a strange problem with Firefox application on Firefox4.0 beta11. Here is the code:

use WWW::Mechanize;
use WWW::Mechanize::Firefox;
use Firefox::Application;


my $mech = WWW::Mechanize::Firefox->new(activate=>1,launch=>'C:\\Progr
+am Files\\Mozilla Firefox 4.0 Beta 11\\firefox.exe');            
$mech->get('www.google.com');


my $repl=$mech->repl;
my $ff=$mech->application();
my $curr=$ff->selectedTab();
$ff->activateTab($curr,$repl);


$ff->closeTab($curr,$repl);
undef $mech;
undef $ff;
[download]

The problem happens with the code:

$ff->closeTab($curr,$repl);
[download]

Where perl informs following error: MozRepl::RemoteObject: TypeError:P is null at C:/Perl/site/lib/Firefox/Application.pm line 306.

This results in firefox tab closing fail...

Anyway the above codes works in firefox 3.6. Mozrepl version in my firefox is:MozRepl 1.1beta2.

Is this a bug of firefox application?

Comment on FireFox application:closeTab does not work on firefox4? Select or Download Code

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Re: FireFox application:closeTab does not work on firefox4? by Corion (Patriarch) on Feb 28, 2011 at 08:18 UTC
There are somewhat larger differences between Firefox 4 and Firefox 3. I haven't tried Firefox 4 yet, so it's not unlikely that the module fails there. For further debugging, you will likely have to dive into the XUL-DOM of Firefox 4 and find out what methods the Javascript code tries to call, and what methods it should call instead.	[reply]