Long live Qt 4.5!

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diff --git a/src/gui/itemviews/qproxymodel_p.h b/src/gui/itemviews/qproxymodel_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 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 the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPROXYMODEL_P_H
+#define QPROXYMODEL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of QAbstractItemModel*.  This header file may change from version
+// to version without notice, or even be removed.
+//
+// We mean it.
+//
+//
+
+#include "QtCore/qabstractitemmodel.h"
+#include "private/qabstractitemmodel_p.h"
+
+#ifndef QT_NO_PROXYMODEL
+
+QT_BEGIN_NAMESPACE
+
+class QEmptyModel : public QAbstractItemModel
+{
+public:
+    explicit QEmptyModel(QObject *parent = 0) : QAbstractItemModel(parent) {}
+    QModelIndex index(int, int, const QModelIndex &) const { return QModelIndex(); }
+    QModelIndex parent(const QModelIndex &) const { return QModelIndex(); }
+    int rowCount(const QModelIndex &) const { return 0; }
+    int columnCount(const QModelIndex &) const { return 0; }
+    bool hasChildren(const QModelIndex &) const { return false; }
+    QVariant data(const QModelIndex &, int) const { return QVariant(); }
+};
+
+class QProxyModelPrivate : private QAbstractItemModelPrivate
+{
+    Q_DECLARE_PUBLIC(QProxyModel)
+
+public:
+    void _q_sourceDataChanged(const QModelIndex &tl,const QModelIndex &br);
+    void _q_sourceRowsAboutToBeInserted(const QModelIndex &parent, int first ,int last);
+    void _q_sourceRowsInserted(const QModelIndex &parent, int first ,int last);
+    void _q_sourceRowsAboutToBeRemoved(const QModelIndex &parent, int first, int last);
+    void _q_sourceRowsRemoved(const QModelIndex &parent, int first, int last);
+    void _q_sourceColumnsAboutToBeInserted(const QModelIndex &parent, int first, int last);
+    void _q_sourceColumnsInserted(const QModelIndex &parent, int first, int last);
+    void _q_sourceColumnsAboutToBeRemoved(const QModelIndex &parent, int first, int last);
+    void _q_sourceColumnsRemoved(const QModelIndex &parent, int first, int last);
+
+    QProxyModelPrivate() : QAbstractItemModelPrivate(), model(0) {}
+    QAbstractItemModel *model;
+    QEmptyModel empty;
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_PROXYMODEL
+
+#endif // QPROXYMODEL_P_H