/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the demonstration applications of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef MODEL_H+
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#define MODEL_H+
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+
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#include <QAbstractItemModel>+
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#include <QFileIconProvider>+
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#include <QIcon>+
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#include <QVector>+
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+
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class Model : public QAbstractItemModel+
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{+
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    Q_OBJECT+
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+
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public:+
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    Model(int rows, int columns, QObject *parent = 0);+
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    ~Model();+
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+
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    QModelIndex index(int row, int column, const QModelIndex &parent) const;+
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    QModelIndex parent(const QModelIndex &child) const;+
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+
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    int rowCount(const QModelIndex &parent) const;+
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    int columnCount(const QModelIndex &parent) const;+
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+
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    QVariant data(const QModelIndex &index, int role) const;+
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    QVariant headerData(int section, Qt::Orientation orientation, int role) const;+
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+
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    bool hasChildren(const QModelIndex &parent) const;+
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    Qt::ItemFlags flags(const QModelIndex &index) const;+
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+
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private:+
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+
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    struct Node+
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    {+
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	Node(Node *parent = 0) : parent(parent), children(0) {}+
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	~Node() { delete children; }+
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	Node *parent;+
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	QVector<Node> *children;+
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    };+
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+
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    Node *node(int row, Node *parent) const;+
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    Node *parent(Node *child) const;+
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    int row(Node *node) const;+
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+
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    QIcon services;+
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    int rc, cc;+
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    QVector<Node> *tree;+
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    QFileIconProvider iconProvider;+
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};+
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+
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#endif+
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