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diff --git a/src/quicktemplates2/qquicktumbler_p_p.h b/src/quicktemplates2/qquicktumbler_p_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Templates 2 module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later 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 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQUICKTUMBLER_P_P_H
+#define QQUICKTUMBLER_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtQuick/private/qquickitemchangelistener_p.h>
+#include <QtQuickTemplates2/private/qquickcontrol_p_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQuickTumbler;
+
+class Q_QUICKTEMPLATES2_PRIVATE_EXPORT QQuickTumblerPrivate : public QQuickControlPrivate, public QQuickItemChangeListener
+{
+    Q_DECLARE_PUBLIC(QQuickTumbler)
+
+public:
+    QQuickTumblerPrivate();
+    ~QQuickTumblerPrivate();
+
+    enum ContentItemType {
+        UnsupportedContentItemType,
+        PathViewContentItem,
+        ListViewContentItem
+    };
+
+    QQuickItem *determineViewType(QQuickItem *contentItem);
+    void resetViewData();
+    QList<QQuickItem *> viewContentItemChildItems() const;
+
+    static QQuickTumblerPrivate *get(QQuickTumbler *tumbler);
+
+    QVariant model;
+    QQmlComponent *delegate;
+    int visibleItemCount;
+    bool wrap;
+    bool explicitWrap;
+    bool ignoreWrapChanges;
+    QQuickItem *view;
+    QQuickItem *viewContentItem;
+    ContentItemType viewContentItemType;
+    int currentIndex;
+    int pendingCurrentIndex;
+    bool ignoreCurrentIndexChanges;
+    int count;
+
+    void _q_updateItemHeights();
+    void _q_updateItemWidths();
+    void _q_onViewCurrentIndexChanged();
+    void _q_onViewCountChanged();
+
+    void disconnectFromView();
+    void setupViewData(QQuickItem *newControlContentItem);
+    void syncCurrentIndex();
+
+    void setCount(int newCount);
+    void setWrapBasedOnCount();
+    void setWrap(bool shouldWrap, bool isExplicit);
+    void lockWrap();
+    void unlockWrap();
+
+    void itemChildAdded(QQuickItem *, QQuickItem *) override;
+    void itemChildRemoved(QQuickItem *, QQuickItem *) override;
+};
+
+QT_END_NAMESPACE
+
+#endif // QQUICKTUMBLER_P_P_H