Re: Doubt about ATK and AT-SPI states

[Piñeiro <apinheiro igalia com>]

On 06/14/2011 01:51 AM, Eitan Isaacson wrote:

The problem here is that a state_set is created from zero when you call 
ref_state. So when you call ref_state_set you get the state, and 
although you add it by hand using add_state_set, in the next 
ref_state_set the state will be created again, and probably with this state.

In general, the idea here is that the object is responsible of his own 
state.

More information here:

https://bugzilla.gnome.org/show_bug.cgi?id=635807

> With ATK, I think you need to call atk_object_notify_state_change
> after setting the state to actually have AT-SPI send an event (which
> accerciser listens for).

Well, yes, using that accerciser would listen that state change. But the 
state_set of the object itself would still be the same. If accerciser is 
refreshed it would call ref_state_set and getting the same outcome.

> On Mon, Jun 13, 2011 at 4:38 PM, Aline Bessa<alibezz gmail com>  wrote:
> > Hi everybody!
> >
> > Accerciser told me that a little demo I was doing has the following problem:
> >
> > a widget that should have states FOCUSABLE or SELECTABLE does not have none.
> > This is a general problem: I would like to add a state in a widget in such a
> > way that I could fix this.

Well, gail via atk just exposes the state of the widget. So go back to 
your app. You are saying that your widget should have the state 
FOCUSABLE or SELECTABLE. But is your widget in that state? Why your 
widget doesn't expose that? Sometimes the errors that expose Accerciser 
is not a ATK problem. Which widget are you using?

> > I tried adding an ATK state via
> > https://gist.github.com/7f384f5f88a12965d10b.
> >
> > The C code tells me the state was correctly added, but Accerciser still
> > doesn't find it. :P

See above, that bug link. It explains why.

> > After that, I decided to add an AT-SPI state instead of an ATK one, but I'm
> > having troubles to compile it. I have the /usr/include/at-spi-1.0 directory,
> > so I added<cspi/spi.h>  in the proper header and -I/usr/include/at-spi-1.0
> > in the Makefile CFLAGS, but it says the methods from spi.h are undefined
> > references... If anyone has any idea of how to solve it, please let me know.
> > I've been struggling with it for a good time right now and google's not
> > helping.

As Eitan said, don't use cspi for that:
  * cspi is intended for AT applications, not to hack the a11y support 
of an app
  * cspi is deprecated

> > More than that: if anyone knows whether ATK states are a better choice,
> > please let me know how to make it work.

I don't understand this paragraph.

BR

PS: BTW, probably gnome-accessibility-devel would be the proper list for 
this kind of questions.

--
Alejandro Piñeiro Iglesias (API) (apinheiro igalia com)