[g-a-devel] Trying to understand STATE_SENSITIVE

[Aaron Leventhal <aaronlev moonset net>]

STATE_SENSITIVE doesn't make sense to me. It think 
it should either be
deprecated or the ATK/AT-SPI docs need to be 
clear. Is STATE_SENSITIVE
doing something we can't do with other states such 
as ENABLED and
INDETERMINATE? It seems like everything in Mozilla 
that's enabled should
also be sensitive? Not filing a bug because I'm 
not sure what to
recommend in the bug.

ATK:
ATK_STATE_SENSITIVE   Indicates this object is 
sensitive
-> Self-referential sentence
ATK_STATE_ENABLED   Indicates that this object is 
enabled. An
inconsistent GtkToggleButton is an example of an 
object which is
sensitive but not enabled.
-> What's an inconsistent button? Why isn't it 
ENABLED and INDETERMINATE?

AT-SPI:
STATE_SENSITIVE   Indicates this object is 
sensitive, e.g. to user
interaction. STATE_SENSITIVE usually accompanies 
STATE_ENABLED for
user-actionable controls, but may be found in the 
absence of
STATE_ENABLED if the current visible state of the 
control is
"disconnected" from the application state. In such 
cases, direct user
interaction can often result in the object gaining 
STATE_SENSITIVE, for
instance if a user makes an explicit selection 
using an object whose
current state is ambiguous or undefined.
-> I don't understand this
STATE_ENABLED   Indicates that this object is 
enabled, i.e. that it
currently reflects some application state. Objects 
that are "greyed out"
may lack this state, and may lack the 
STATE_SENSITIVE if direct user
interaction cannot cause them to acquire 
STATE_ENABLED.
-> I don't understand this

Also gok/gok-keyboard.c:
(gok_style_if_enabled): Check for SPI_STATE_SENSITIVE
instead of SPI_STATE_ENABLED; this is because 
SENSITIVE
has the semantics we really want, ENABLED can be 
false for
a few actionable elements such as radiobuttons 
which are in
the "indeterminate" state (i.e. no radiobutton in 
the group is
toggled yet). Fix for bug #136877.

-> I don't see why radio buttons aren't considered 
enabled in this state.
-> Is INDETERMINATE expected on radio groups with 
no no checked radio
button?

- Aaron