sorting, cleanup

widgets/checkqueuetablemodel.h

@@ -29,8 +29,11 @@ public:
     bool canDropMimeData(const QMimeData *data, Qt::DropAction action, int, int, const QModelIndex &);
     QMimeData* mimeData(const QModelIndexList &indexes) const override;
     bool dropMimeData(const QMimeData *data, Qt::DropAction action, int row, int column, const QModelIndex &parent) override;
+
+    void sort(int column, Qt::SortOrder order) override;
 private:
     std::vector<Check> *checks;
+    bool compare(const Check& check_a, const Check& check_b, int column);
 signals:
     void editCompleted(const QString &);
 };