-/*! Given a possible target client, returns what the target client really
- should be for actions */
-struct _ObClient* event_target_client(struct _ObClient *client);
+/*! A time at which an event happened that caused this current event to be
+ generated. This is a user-provided time and not to be trusted.
+ Returns CurrentTime if there was no source time provided.
+*/
+Time event_source_time(void);
+
+/*! Update the timestamp for when the user has last used the focused window.
+ This updates the timestamp to the time of the last event, given by
+ event_time().
+*/
+void event_update_user_time(void);