events: Rework event subsystem (add_event, send_event) to be more versatile.

add_event_ex is added that takes an extra user_data pointer. This pointer is
passed to the callback (add_event and add_event_ex have slightly different
callbacks types). All callbacks also get the event id passed. Events added
with add_event_ex must be removed with remove_event_ex because the user_data
pointer must match in addition to the callback pointer.

On the other add_event is simplified to omit the oneshort parameter which
was almost always false (still there with add_event_ex).

As a side effect the ata_idle_notify callbacks are changed as well, they
do not take a data parameter anymore which was always NULL anyway.

This commit also adds some documentation to events.h

Change-Id: I13e29a0f88ef908f175b376d83550f9e0231f772

1 files changed, 1 insertions, 1 deletions

diff --git a/apps/gui/statusbar-skinned.h b/apps/gui/statusbar-skinned.h
index ac12dfa1aa..237ec45c82 100644
--- a/apps/gui/statusbar-skinned.h
+++ b/apps/gui/statusbar-skinned.h
@@ -66,5 +66,5 @@ int sb_postproccess(enum screen_type screen, struct wps_data *data);
 #define sb_preproccess NULL
 #define sb_postproccess NULL
 #endif
-void do_sbs_update_callback(void *param);
+void do_sbs_update_callback(unsigned short id, void *param);
 #endif /* __STATUSBAR_SKINNED_H__ */