/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/
**
** This file is part of the documentation of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
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** modification, are permitted provided that the following conditions are
** met:
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**     notice, this list of conditions and the following disclaimer.
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**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
**     the names of its contributors may be used to endorse or promote
**     products derived from this software without specific prior written
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****************************************************************************/

#include <QtGui>
#include <QApplication>
#include <QSortFilterProxyModel>

class MyItemModel : public QStandardItemModel
{
public:
    MyItemModel(QWidget *parent = 0);
};

MyItemModel::MyItemModel(QWidget *parent)
    : QStandardItemModel(parent)
{};

class Widget : public QWidget
{
public:
    Widget(QWidget *parent = 0);
};

Widget::Widget(QWidget *parent)
    : QWidget(parent)
{
//! [0] //! [1]
        QTreeView *treeView = new QTreeView;
//! [0]
        MyItemModel *model = new MyItemModel(this);

        treeView->setModel(model);
//! [1]

//! [2]
        MyItemModel *sourceModel = new MyItemModel(this);
        QSortFilterProxyModel *proxyModel = new QSortFilterProxyModel(this);

        proxyModel->setSourceModel(sourceModel);
        treeView->setModel(proxyModel);
//! [2]

//! [3]
        treeView->setSortingEnabled(true);
//! [3]

//! [4]
        proxyModel->sort(2, Qt::AscendingOrder);
//! [4] //! [5]
        proxyModel->setFilterRegExp(QRegExp(".png", Qt::CaseInsensitive,
                                            QRegExp::FixedString));
        proxyModel->setFilterKeyColumn(1);
//! [5]
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    Widget widget;
    widget.show();
    return app.exec();
}