Re: [g-a-devel] at-spi2 first impressions

[Willie Walker <William Walker Sun COM>]

Hi Li, Mark:

Orca currently listens for object:children-changed events to determine when applications are removed from the desktop.  We could listen for application-removed, though (I didn't know about this event).

Will

On Dec 17, 2009, at 9:34 PM, Li Yuan wrote:

> Hi Mark,
> 
> Yes, for 3, probably just notify children-changed and
> application-removed is enough. But we need ATs developers to confirm
> this.
> 
> Li
> 
> On Thu, 2009-12-17 at 14:20 -0800, Mark Doffman wrote:
>> Hi Li,
>> 
>> Looking at what is performed in the exit_func called by g_atexit i'm
>> wondering how much of it we really need to do. (For the D-Bus case).
>> 
>> The exit_func:
>> 
>> 1) deregisters the atk event listeners.
>> 
>> 2) deregisters from the registryd.
>> 
>> 3) sends out the 'deactivate' and 'destroy' signals for each of the
>> applications windows.
>> 
>> 1 & 2 are probably not necessary, the registryd, in the D-Bus, case will
>> deregister the application when the D-Bus connection goes down.
>> 
>> The only issue is number 3. How reliant are AT's on the 'destroy' and
>> 'decativate' events being sent? We could always send something similar
>> directly from the registryd, although a children-changed on the root
>> object will already be sent.
>> 
>> Thanks
>> 
>> Mark
>> 
>> On Wed, 2009-12-09 at 16:03 +0800, Li Yuan wrote:
>>> I think gtk_quit_add is a possible fix. But if an application calls the
>>> second gtk_main after the first one quits, the application will become
>>> inaccessible.
>>> 
>>> Li
>>> 
>>> On Mon, 2009-12-07 at 23:40 -0500, Matthias Clasen wrote:
>>>> Here is another observation, from looking at the code:
>>>> 
>>>> the atk-adaptor in at-spi2-atk inherited a horrible misfeature from
>>>> at-spi's atk-bridge: it uses atexit to do 'cleanup' at exit. This is
>>>> causing the most  painful problems, see
>>>> https://bugzilla.redhat.com/show_bug.cgi?id=537843
>>>> 
>>>> As Owen eloquently puts it there: just say no to atexit,
>>>> deregistration needs to be automatic regardless whether the process
>>>> crashes or exits orderly.
>>>> 
>>>> 
>>>> Matthias
>>>> _______________________________________________
>>>> Gnome-accessibility-devel mailing list
>>>> Gnome-accessibility-devel gnome org
>>>> http://mail.gnome.org/mailman/listinfo/gnome-accessibility-devel
>>> 
>>> 
>> 
>> 
> 
> 
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