[g-a-devel] exposing text using ATK

[Mike Gorse <mgorse mgorse dhs org>]

Hi all,

When a user presses backspace, an at-spi event gets generated, and its 
any_data field contains the character that was just deleted.  How does 
this happen?  It is not happening with my current ATK implementation for 
Abiword.  My understanding is that, when text is deleted, the application 
should emit a text_changed::delete signal with the offset and length of 
the deleted text.  Does this need to be done before the text is deleted? 
(It is currently being sent afterwards; perhaps this is the problem.)  If 
so, what about text_changed::insert signals?  Should they also be sent 
before the text is inserted?  Or is there something that I should be doing 
to pass the deleted character?

Also, I have an unrelated question about get_text_at_offset in 
AtkTextIface.  When passed a line boundary, I gather, from looking at a 
comment in the Orca source, that the end offset should correspond to the 
"beginning of the next line."  How do new-line characters factor into 
this?  Should the end offset correspond to the new-line character dividing 
the lines, or the character just beyond it?  Ie, is the new-line 
considered part of the previous line, or is it part of the next line, or 
neither?

Thanks, and, if there is documentation somewhere that explains all of 
this, then feel free to point me to it.

-- Mike Gorse / AIM:linvortex / http://mgorse.freeshell.org --