reversed_completer_model.h

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#ifndef REVERSED_COMPLETER_MODEL_H
#define REVERSED_COMPLETER_MODEL_H
 
#include <QAbstractProxyModel>
 
class QAbstractItemModel;

class ReversedCompleterModel : public QAbstractProxyModel
{
public:
    using QAbstractProxyModel::QAbstractProxyModel;
 
    void setSourceModel(QAbstractItemModel *sourceModel) override;
    void setEnabled(bool enabled);
 
    QModelIndex mapToSource(const QModelIndex &proxyIndex) const override;
    QModelIndex mapFromSource(const QModelIndex &sourceIndex) const override;
    QModelIndex index(int row, int column, const QModelIndex &parent = {}) const override;
    QModelIndex parent(const QModelIndex &) const override;
    int rowCount(const QModelIndex &parent = {}) const override;
    int columnCount(const QModelIndex &parent = {}) const override;
    QVariant data(const QModelIndex &proxyIndex, int role = Qt::DisplayRole) const override;
    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override;
 
private:
    int sourceRowCount() const;
    void invalidate();
 
    bool isEnabled = false;
};
 
#endif // REVERSED_COMPLETER_MODEL_H