*/
virtual QList<BufferInfo> requestBuffers(UserId user, QDateTime since = QDateTime()) = 0;
+ //! Update the LastSeenDate for a Buffer
+ /** This Method is used to make the LastSeenDate of a Buffer persistent
+ * \param user The Owner of that Buffer
+ * \param bufferId The buffer id
+ * \param seenDate Time the Buffer has been visited the last time
+ */
+ virtual void setBufferLastSeen(UserId user, const BufferId &bufferId, const QDateTime &seenDate) = 0;
+
+ //! Get a Hash of all last seen dates.
+ /** This Method is called when the Quassel Core is started to restore the lastSeenDates
+ * \param user The Owner of the buffers
+ */
+ virtual QHash<BufferId, QDateTime> bufferLastSeenDates(UserId user) = 0;
+
+
/* Message handling */
//! Store a Message in the backlog.