Re: Is there an ATK dev who can answer noob questions?

[Alejandro Piñeiro <apinheiro igalia com>]

On 26/07/17 00:56, Bill Cox via gnome-accessibility-list wrote:
> There is a small effort of part-time a11y contributers within Google
> and Opera who would like to hook up Chromium to ATK so it can work
> with Orca.  Between us, I think we have no experience with ATK.  Is
> there anyone who would be available to answer our noob questions?
>
> Here's my first one: This function
> <https://cs.chromium.org/chromium/src/ui/accessibility/platform/atk_util_auralinux.cc?l=139&gs=cpp%253Aatk_util_auralinux_class_init%28_AtkUtilAuraLinuxClass%2B*%29%2540chromium%252F..%252F..%252Fui%252Faccessibility%252Fplatform%252Fatk_util_auralinux.cc%257Cdef&gsn=atk_util_auralinux_class_init&ct=xref_usages>
> has this line:
>
> atk_class->get_root = atk_util_auralinux_get_root;
>
> However, atk_util_auralinux_get_root is never called,

Skimming the code it seems ok (or at least equivalent to what gkt[1] and
clutter[2]) does.

> while some other atk_class functions, like get_toolkit_name, are
> called.  At the moment, in Debian Stretch running Cinnamon, I see the
> application "chrome" registered, but it has no children.  IIUC, the
> chromium code used to present more than this.  Is atk_get_root
> supposed to be called to get access to the accessible objects within
> the application?

As soon as an application is registered on the at-spi2 registry through
at-spi2-atk, one of the first methods it calls is get_root. I assume
that you called atk_bridget_adaptor_init [3] to get your application
registered, right?

In any case, as you are saying, it is strange that get_toolkit_name is
being called but get_root is not. So, for completeness, could you check
who is calling get_toolkit_name?

> Any help figuring out what we mucked up would be appreciated.  Just as
> an added incentive, if you help now, I'll punish you with lots more
> noob questions in the future :)
>
> Thanks,
> Bill
>
>
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[1]
https://git.gnome.org/browse/gtk+/tree/gtk/a11y/gtkaccessibilityutil.c#n100
[2]
https://git.gnome.org/browse/clutter/tree/clutter/cally/cally-util.c#n100
[3]
https://git.gnome.org/browse/at-spi2-atk/tree/atk-adaptor/atk-bridge.h#n32