Re: [g-a-devel] How to choose the suitable event in AT-SPI

[Michael Pozhidaev <msp altlinux ru>]

I just want to  get a tiny screen reading utility which could allow
using Firefox, Skype or something else without GNOME and Orca, wich looks
to me rather big and heavy. Coming events describe the changes really
well but I am not sure when a particular change is describe
completely. For example, if I get text-caret-move it may mean the cursor
position change or may be a part of the text content change (which evidently implies the cursor
position change as well). What it is depends on the events which will
come next. If we get after that the text-change event, well, it is the text changing
and we should announce that as a text changing. Meantime, if we
get nothing after that, we should announce just the cursor move. 

The question is how I can be sure that nothing will come after a
particular event? The announcement to the user depends on the _*entire*_
set of events but currently I don't know any way to be clearly sure what
kind of user action I should announce. 

Thank you! :))

Alexander Surkov <surkov alexander gmail com> writes:

> Accessible events are just describe the change within accessible tree. They are
> not really about user action, i.e. single user action may result in several of
> accessible events. What is your use case?
>
> On Thu, Dec 4, 2014 at 8:43 PM, Michael Pozhidaev <msp altlinux ru> wrote:
>
>     Hello all,
>
>     I got a question regarding choosing the most relevant event for the
>     particular user action. When the user does something (presses the key or
>     anything else) his/her action usually yields the several events which go
>     through registryd and are transmitted to AT. The problem is how to
>     choose among them the most preferable one? We can collect them and do
>     the selection but for that we should be sure that know them all and for
>     the last user action there will no events any more. This require a some
>     sort of transactions or packets and I am wondering is there any way to
>     ensure that we got everything for the last user action? Maybe my
>     approach is wrong and I would be thankful if somebody can help me to
>     understand what I should do with that.
>
>     Speaking "the most preferable event" I mean the most relevant event to
>     construct a user feedback. For example, when the user presses keys in
>     the editable text, the events reflecting caret move and text changing
>     arrive.
>     Among them we need the text changing one while caret move is very
>     confusing because it could be caused just by pressing the arrows.
>
>     Thank you in advance!
>
>     --
>     Michael Pozhidaev. Tomsk, Russia.
>     Russian info page: http://www.marigostra.ru/
>     English info page: http://www.marigostra.com/
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>     gnome-accessibility-devel mailing list
>     gnome-accessibility-devel gnome org
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-- 
Michael Pozhidaev. Tomsk, Russia.
Russian info page: http://www.marigostra.ru/
English info page: http://www.marigostra.com/