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** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
** This file is part of the demonstration applications of the Qt Toolkit.
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License versions 2.0 or 3.0 as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file.  Please review the following information
** to ensure GNU General Public Licensing requirements will be met:
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.  In addition, as a special
** exception, Nokia gives you certain additional rights. These rights
** are described in the Nokia Qt GPL Exception version 1.3, included in
** the file GPL_EXCEPTION.txt in this package.
** Qt for Windows(R) Licensees
** As a special exception, Nokia, as the sole copyright holder for Qt
** Designer, grants users of the Qt/Eclipse Integration plug-in the
** right for the Qt/Eclipse Integration to link to functionality
** provided by Qt Designer and its related libraries.
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.

#ifndef MODEL_H
#define MODEL_H

#include <QAbstractItemModel>
#include <QFileIconProvider>
#include <QVector>

class Model : public QAbstractItemModel

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

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

    int rowCount(const QModelIndex &parent) const;
    int columnCount(const QModelIndex &parent) const;

    QVariant data(const QModelIndex &index, int role) const;
    QVariant headerData(int section, Qt::Orientation orientation, int role) const;

    bool hasChildren(const QModelIndex &parent) const;
    Qt::ItemFlags flags(const QModelIndex &index) const;
    bool isDragEnabled(const QModelIndex &index) const;


    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;

    int rc, cc;
    QVector<Node> *tree;
    QFileIconProvider iconProvider;


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