QtModelsToolkit/toolkit/include/qtmodelstoolkit/snapshotmodel.h

#pragma once

#include <QAbstractListModel>

namespace qtmt {

class SnapshotModel : public QAbstractListModel
{
    Q_OBJECT
public:
    explicit SnapshotModel(QObject* parent = nullptr);
    explicit SnapshotModel(const QAbstractItemModel& model, bool recursive = true, QObject* parent = nullptr);

    ~SnapshotModel();

    int rowCount(const QModelIndex& parent = {}) const override;
    QHash<int, QByteArray> roleNames() const override;
    QVariant data(const QModelIndex& index, int role) const override;

    void grabSnapshot(const QAbstractItemModel& model, bool recursive = true);
    void clearSnapshot();

    QVariant data(int row, int role) const;

private:
    QHash<int, QList<QVariant>> m_data;
    QHash<int, QByteArray> m_roles;
};

} // namespace qtmt