diff --git a/src/gcal-subscriber-view.c b/src/gcal-subscriber-view.c
index eabe3caa..25e346e1 100644
--- a/src/gcal-subscriber-view.c
+++ b/src/gcal-subscriber-view.c
@@ -56,6 +56,8 @@ static gboolean       gcal_subscriber_view_is_child_multicell        (GcalSubscr
 static guint          gcal_subscriber_view_get_child_cell            (GcalSubscriberView               *subscriber,
                                                                       GcalEventWidget                  *child);
 
+static void           gcal_subscriber_view_clear_state               (GcalSubscriberView               *subscriber_view);
+
 static void           gcal_subscriber_view_component_added           (ECalDataModelSubscriber *subscriber,
                                                                       ECalClient              *client,
                                                                       ECalComponent           *comp);
@@ -82,7 +84,8 @@ static void
 event_activated (GcalEventWidget *widget,
 		 gpointer         user_data)
 {
-  /* FIXME: clear_widget marks + popover + any state */
+  /* FIXME: implement clear_state vfunc in descendants */
+  gcal_subscriber_view_clear_state (GCAL_SUBSCRIBER_VIEW (user_data));
   g_signal_emit (GCAL_SUBSCRIBER_VIEW (user_data), signals[EVENT_ACTIVATED], 0, widget);
 }
 
@@ -320,6 +323,18 @@ gcal_subscriber_view_get_child_cell (GcalSubscriberView  *subscriber,
   return 0;
 }
 
+static void
+gcal_subscriber_view_clear_state (GcalSubscriberView  *subscriber_view)
+{
+  GcalSubscriberViewClass *klass;
+
+  g_return_if_fail (GCAL_IS_SUBSCRIBER_VIEW (subscriber_view));
+
+  klass = GCAL_SUBSCRIBER_VIEW_GET_CLASS (subscriber_view);
+  if (klass->clear_state)
+    klass->clear_state (subscriber_view);
+}
+
 /* ECalDataModelSubscriber interface API */
 static void
 gcal_subscriber_view_component_added (ECalDataModelSubscriber *subscriber,
diff --git a/src/gcal-subscriber-view.h b/src/gcal-subscriber-view.h
index b3831c88..d052ca1a 100644
--- a/src/gcal-subscriber-view.h
+++ b/src/gcal-subscriber-view.h
@@ -53,8 +53,9 @@ struct _GcalSubscriberViewClass
   void       (*event_activated)   (GcalSubscriberView *subscriber_view, GcalEventWidget *event_widget);
 
   /*< public >*/
-  gboolean  (*is_child_multicell) (GcalSubscriberView *subscriber, GcalEventWidget *child);
-  guint     (*get_child_cell)     (GcalSubscriberView *subscriber, GcalEventWidget *child);
+  gboolean  (*is_child_multicell) (GcalSubscriberView *subscriber_view, GcalEventWidget *child);
+  guint     (*get_child_cell)     (GcalSubscriberView *subscriber_view, GcalEventWidget *child);
+  void      (*clear_state)        (GcalSubscriberView *subscriber_view);
 
   /* gcal-view replacements */
   GtkWidget*     (*get_child_by_uuid)        (GcalSubscriberView *subscriber_view, const gchar *uuid);