Re: Enhancing GTK+ TreeView accessibility

[Li Yuan <Li Yuan Sun COM>]

Hi Bill,

On 06/ 7/10 06:59 PM, Bill Cox wrote:
> Hi, Li.
>
> On Sun, Jun 6, 2010 at 11:18 PM, Li Yuan<Li Yuan sun com>  wrote:
>    
> > We have a bug for gailtreeview's performance:
> > https://bugzilla.gnome.org/show_bug.cgi?id=577098, and we have done some
> > analysis work there.
> >      
> Hopefully we can help out with this bug over in Vinux land.
>
>    
> > I haven't read the code of gconf-editor, is it text cell or some custom cell
> > renderer? If it is a custom cell renderer, gconf-editor should implement the
> > accessibility peer. Caching the data is what GAIL does for known cell
> > renderers.
> >      
> Your guess is correct.  Gconf-editor does implement a custom cell
> renderer, basically just a wrapper around the existing renderers.  It
> selects the renderer to use based on the type of data in the cell.
> How would I implement the accessibility peer?
>    
gailtextcell would be a good example. Basically implements update_cache 
function, which updates the accessibility objects' properties (name or 
other stuff).


> I tested the caching, and you are correct.  I have had a couple of
> applications where the checkbox states shown were out of sync with the
> values announced.  The fix in those cases was to implement a model
> column to represent the checkbox values.  I'll look further into that
> next time I run across it.
>    
It would be great if you can file a bug.

Li