treemodel.h

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#pragma once

#include <QAbstractItemModel>
#include "treeitem.h"

class TreeModel : public QAbstractItemModel
{
    Q_OBJECT

public:
    explicit TreeModel(QObject *parent = nullptr);
    ~TreeModel();

    // Basic functionality:
    QModelIndex index(int row, int column,
                      const QModelIndex &parent = QModelIndex()) const override;
    QModelIndex parent(const QModelIndex &index) const override;

    int rowCount(const QModelIndex &parent = QModelIndex()) const override;
    int columnCount(const QModelIndex &parent = QModelIndex()) const override;

    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override;

public slots:
    Q_INVOKABLE void showQModelIndex(const QModelIndex &index) const;

private:
    TreeItem *m_rootItem;
};