eolian: add event_prefix and have classes follow that or eo_prefix by default

Previously events used to use class name as a prefix and ignored eo_prefix
when specified. This is no longer the case. Events follow eo_prefix by default
now. In order to get around this for classes where this is undesirable, a new
field event_prefix was added which takes priority over eo_prefix. If neither
is specified, class name is used like previously.

@feature

1 files changed, 1 insertions, 0 deletions

diff --git a/src/lib/elementary/elm_box.eo b/src/lib/elementary/elm_box.eo
index 01ddc3b..165662d 100644
--- a/src/lib/elementary/elm_box.eo
+++ b/src/lib/elementary/elm_box.eo
@@ -5,6 +5,7 @@ class Elm.Box (Elm.Widget)
 {
    legacy_prefix: elm_box;
    eo_prefix: elm_obj_box;
+   event_prefix: elm_box;
    methods {
       @property homogeneous {
          set {