+ * modest_header_view_set_filter:
+ * @self: a #ModestHeaderView
+ * @filter: a filter mask to be applied to messages
+ *
+ * sets the special filter to be applied (affects visibility of items).
+ * It's a mask, and filters applied are applied with an AND.
+ */
+void modest_header_view_set_filter (ModestHeaderView *self,
+ ModestHeaderViewFilter filter);
+
+/**
+ * modest_header_view_unset_filter:
+ * @self: a #ModestHeaderView
+ * @filter: a filter mask to be unapplied to headers
+ *
+ * Unsets the special filter to be applied (affects visibility of
+ * items). It's a mask, and filters applied are applied with an AND.
+ */
+void modest_header_view_unset_filter (ModestHeaderView *self,
+ ModestHeaderViewFilter filter);
+
+
+
+/**