treeitem.h

#ifndef TREEITEM_H
#define TREEITEM_H

#include <QList>
#include <QVariant>
#include <QVector>
#include <QSqlRecord>
class TreeItem
{
public:
    TreeItem();
    explicit TreeItem(const QVector<QVariant> &data,
                            TreeItem *parent = nullptr);
    ~TreeItem();

    TreeItem *child(int number);
    int childCount() const;
    int columnCount() const;
    QVariant data(int column) const;
    bool insertChildren(int position, int count, int columns);
    bool insertColumns(int position, int columns);
    TreeItem *parent();
    bool removeChildren(int position, int count);
    bool removeColumns(int position, int columns);
    int childNumber() const;
    bool setData(int column, const QVariant &value);
private:
    QList<TreeItem*> childItems{};
    QVector<QVariant> itemData{};
    TreeItem *parentItem{};
};

#endif // TREEITEM_H