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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

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     7 ** This file is part of the demonstration applications of the Qt Toolkit.

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    16 ** GNU Lesser General Public License Usage

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    40 ****************************************************************************/

    41 

    42 #ifndef MODEL_H

    43 #define MODEL_H

    44 

    45 #include <QAbstractItemModel>

    46 #include <QFileIconProvider>

    47 #include <QVector>

    48 

    49 class Model : public QAbstractItemModel

    50 {

    51     Q_OBJECT

    52 

    53 public:

    54     Model(int rows, int columns, QObject *parent = 0);

    55     ~Model();

    56 

    57     QModelIndex index(int row, int column, const QModelIndex &parent) const;

    58     QModelIndex parent(const QModelIndex &child) const;

    59 

    60     int rowCount(const QModelIndex &parent) const;

    61     int columnCount(const QModelIndex &parent) const;

    62 

    63     QVariant data(const QModelIndex &index, int role) const;

    64     QVariant headerData(int section, Qt::Orientation orientation, int role) const;

    65 

    66     bool hasChildren(const QModelIndex &parent) const;

    67     Qt::ItemFlags flags(const QModelIndex &index) const;

    68 

    69 private:

    70 

    71     struct Node

    72     {

    73 	Node(Node *parent = 0) : parent(parent), children(0) {}

    74 	~Node() { delete children; }

    75 	Node *parent;

    76 	QVector<Node> *children;

    77     };

    78 

    79     Node *node(int row, Node *parent) const;

    80     Node *parent(Node *child) const;

    81     int row(Node *node) const;

    82 

    83     int rc, cc;

    84     QVector<Node> *tree;

    85     QFileIconProvider iconProvider;

    86 };

    87 

    88 #endif