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diff --git a/src/quicktemplates/qquickpopuppositioner_p_p.h b/src/quicktemplates/qquickpopuppositioner_p_p.h
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+++ b/src/quicktemplates/qquickpopuppositioner_p_p.h
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+// Copyright (C) 2017 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QQUICKPOPUPPOSITIONER_P_P_H
+#define QQUICKPOPUPPOSITIONER_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/qtquicktemplates2global_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQuickItem;
+class QQuickPopup;
+
+class Q_QUICKTEMPLATES2_EXPORT QQuickPopupPositioner : public QQuickItemChangeListener
+{
+public:
+    explicit QQuickPopupPositioner(QQuickPopup *popup);
+    ~QQuickPopupPositioner();
+
+    QQuickPopup *popup() const;
+
+    QQuickItem *parentItem() const;
+    void setParentItem(QQuickItem *parent);
+
+    virtual void reposition();
+
+protected:
+    void itemGeometryChanged(QQuickItem *, QQuickGeometryChange, const QRectF &) override;
+    void itemParentChanged(QQuickItem *, QQuickItem *parent) override;
+    void itemChildRemoved(QQuickItem *, QQuickItem *child) override;
+
+    void removeAncestorListeners(QQuickItem *item);
+    void addAncestorListeners(QQuickItem *item);
+
+    bool m_positioning = false;
+    QQuickItem *m_parentItem = nullptr;
+    QQuickPopup *m_popup = nullptr;
+    qreal m_popupScale = 1.0;
+};
+
+QT_END_NAMESPACE
+
+#endif // QQUICKPOPUPPOSITIONER_P_P_H