Re: [Bug 332660] GTK file picker as used in Firefox is not accessibile for GOK (Mozilla strips atk-bridge from GTK_MODULES)

["Padraig O'Briain" <Padraig Obriain Sun COM>]

If firefox uses GTK widgets the mozilla accessibility module will need 
to load the GTK module libgail.so as it contains the accessibility 
implementation for GTK widgets.

I would suggest that the mozilla accessibility module load gail before 
it does its own initialization.

There may be problems getting gail and mozilla accessibility module to 
co-exist but we will just have to work through these problems. For 
instance, I am not sure how traversing the accessible object hierarchy 
will work when we mix objects from different toolkits.

Padraig

Ginn Chen wrote:
> Hi Peter,
>
> Thanks for your reply.
>
> On Apr 18, 2006, at 1:21 PM, Peter Korn wrote:
>
> > Hi Ginn,
> >
> > I don't see a way around this, other than perhaps more selectively 
> > setting/unsetting GTK_MODULES (or otherwise explicitly loading gail 
> > and atk-bridge into those widgets that are in use in these dialogs.
> Setting GTK_MODULES before creates the dialog doesn't work.
> I think we can't do this because they run in same process.
>
> > Perhaps you could explain in more detail why Mozilla is having 
> > trouble when gail/atk-bridge are loaded?
> With GTK_MODULES set, atk-bridge.so is loaded first, and it inits 
> after its load.
> When atk-bridge inits, it calls atk_get_root, 
> add_global_event_listener, etc.
>
> When mozilla accessibility module loads, it assigns its implementation 
> to atk_class interfaces in mai_util_class_init, including 
> atk_get_root, add_global_event_listener, etc.
> Then mozilla tries to load atk-bridge.so, and inits it.
> Generally it will init and call mai implementation of atk_get_root, 
> add_global_event_listener, etc.
>
> But since atk-bridge is already initialized, it will just return and 
> do nothing.
>
> I don't know if it is possible to shutdown atk-bridge and re-init it.
> Could it solve the dialog problem?
>
> Thanks,
>
> Ginn
>
> > Regards,
> >
> > Peter Korn
> > Accessibility Architect,
> > Sun Microsystems, Inc.
> > > Begin forwarded message:
> > >
> > > > *From: *bugzilla-daemon mozilla org 
> > > > <mailto:bugzilla-daemon mozilla org>
> > > > *Date: *April 13, 2006 4:46:48 PM CST
> > > > *To: *browser-china-atf sun com <mailto:browser-china-atf sun com>
> > > > *Subject: **[Bug 332660] GTK file picker as used in Firefox is not 
> > > > accessibile for GOK (Mozilla strips atk-bridge from GTK_MODULES)*
> > > >
> > > > Do not reply to this email.  You can add comments to this bug at
> > > > https://bugzilla.mozilla.org/show_bug.cgi?id=332660
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > ------- Comment #7 from ginn chen sun com 
> > > > <mailto:ginn chen sun com>  2006-04-13 01:46 PDT -------
> > > > I need help on this bug.
> > > >
> > > > I tried to use gtk_widget_get_accessible to get AtkObject* of the 
> > > > file-picker
> > > > dialog.
> > > > But it doesn't work. The Role is INVALID.
> > > > If mozilla doesn't unset GTK_MODULES, the role of file-picker 
> > > > accessible is
> > > > DIALOG.
> > > >
> > > > How can I get valid AtkObject* of file-picker without setting 
> > > > GTK_MODULES?
> > > > (If GTK_MODULES sets, mozilla a11y interface can not initialized 
> > > > correctly.)
> > > >
> > > > Any ideas?
> > > >
> > > > Thanks!
> > > >
> > > >
> > > >
> > > > --Configure bugmail: 
> > > > https://bugzilla.mozilla.org/userprefs.cgi?tab=email
> > >
> > > --------
> > > Ginn Chen
> > > Software Engineer, Browser Team
> > > Sun Microsystems, Inc.
> > > Phone: +86-10-82618200 (x82869)
> > > Fax:   +86-10-62780969
> > >
> > >
> > >
> > > ------------------------------------------------------------------------ 
> > >
> > >
> > > _______________________________________________
> > > gnome-accessibility-list mailing list
> > > gnome-accessibility-list gnome org
> > > http://mail.gnome.org/mailman/listinfo/gnome-accessibility-list
>
> --------
> Ginn Chen
> Software Engineer, Browser Team
> Sun Microsystems, Inc.
> Phone: +86-10-82618200 (x82869)
> Fax:   +86-10-62780969
>
>
>
> _______________________________________________
> gnome-accessibility-list mailing list
> gnome-accessibility-list gnome org
> http://mail.gnome.org/mailman/listinfo/gnome-accessibility-list