model.h Example File

itemviews/interview/model.h
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#ifndef MODEL_H #define MODEL_H #include <QAbstractItemModel> #include <QFileIconProvider> #include <QIcon> #include <QVector> class Model : public QAbstractItemModel { Q_OBJECT public: Model(int rows, int columns, QObject *parent = 0); ~Model(); QModelIndex index(int row, int column, const QModelIndex &parent) const override; QModelIndex parent(const QModelIndex &child) const override; int rowCount(const QModelIndex &parent) const override; int columnCount(const QModelIndex &parent) const override; QVariant data(const QModelIndex &index, int role) const override; QVariant headerData(int section, Qt::Orientation orientation, int role) const override; bool hasChildren(const QModelIndex &parent) const override; Qt::ItemFlags flags(const QModelIndex &index) const override; private: struct Node { Node(Node *parent = 0) : parent(parent), children(0) {} ~Node() { delete children; } Node *parent; QVector<Node> *children; }; Node *node(int row, Node *parent) const; Node *parent(Node *child) const; int row(Node *node) const; QIcon services; int rc; int cc; QVector<Node> *tree; QFileIconProvider iconProvider; }; #endif // MODEL_H