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50
51#ifndef MODEL_H
52#define MODEL_H
53
54#include <QAbstractItemModel>
55#include <QFileIconProvider>
56#include <QIcon>
57#include <QVector>
58
59class Model : public QAbstractItemModel
60{
61 Q_OBJECT
62
63public:
64 Model(int rows, int columns, QObject *parent = nullptr);
65 ~Model();
66
67 QModelIndex index(int row, int column, const QModelIndex &parent) const override;
68 QModelIndex parent(const QModelIndex &child) const override;
69
70 int rowCount(const QModelIndex &parent) const override;
71 int columnCount(const QModelIndex &parent) const override;
72
73 QVariant data(const QModelIndex &index, int role) const override;
74 QVariant headerData(int section, Qt::Orientation orientation, int role) const override;
75
76 bool hasChildren(const QModelIndex &parent) const override;
77 Qt::ItemFlags flags(const QModelIndex &index) const override;
78
79private:
80
81 struct Node
82 {
83 Node(Node *parent = nullptr) : parent(parent), children(nullptr) {}
84 ~Node() { delete children; }
85 Node *parent;
86 QVector<Node> *children;
87 };
88
89 Node *node(int row, Node *parent) const;
90 Node *parent(Node *child) const;
91 int row(Node *node) const;
92
93 QIcon services;
94 int rc;
95 int cc;
96 QVector<Node> *tree;
97 QFileIconProvider iconProvider;
98};
99
100#endif // MODEL_H
101

source code of qtbase/examples/widgets/itemviews/interview/model.h