private:
void insertMessageGroup(const QList<Message> &);
int insertMessagesGracefully(const QList<Message> &); // inserts as many contiguous msgs as possible. returns numer of inserted msgs.
private:
void insertMessageGroup(const QList<Message> &);
int insertMessagesGracefully(const QList<Message> &); // inserts as many contiguous msgs as possible. returns numer of inserted msgs.