this will be common enough to put into elm - there is no way to do a
gimp style "tool palette" where you select one of them (like one from
a set of radio buttons) at all times... but you don't want the "round
circle" but instead want it to look more like a button to fit in with
a palette style look. this calls for styles... so here they are.
@feat
in previous versions of this widget, the calls that are available due to
inheritance did not work. efl_ui_check_selected_set did not work on a
radio button. However, the internal function _state_set did just exactly
that. So this commit refactors the activity emitting out of the
function, so the _state_set function can just be used as the
efl_ui_check_selected set function.
Reviewed-by: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Differential Revision: https://phab.enlightenment.org/D9059