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diff --git a/src/quicktemplates/qquickcontainer_p.h b/src/quicktemplates/qquickcontainer_p.h
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+++ b/src/quicktemplates/qquickcontainer_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 QQUICKCONTAINER_P_H
+#define QQUICKCONTAINER_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 <QtQuickTemplates2/private/qquickcontrol_p.h>
+#include <QtQml/qqmllist.h>
+
+QT_REQUIRE_CONFIG(quicktemplates2_container);
+
+QT_BEGIN_NAMESPACE
+
+class QQuickContainerPrivate;
+
+class Q_QUICKTEMPLATES2_EXPORT QQuickContainer : public QQuickControl
+{
+    Q_OBJECT
+    Q_PROPERTY(int count READ count NOTIFY countChanged FINAL)
+    Q_PROPERTY(QVariant contentModel READ contentModel CONSTANT FINAL)
+    Q_PROPERTY(QQmlListProperty<QObject> contentData READ contentData)
+    Q_PROPERTY(QQmlListProperty<QQuickItem> contentChildren READ contentChildren NOTIFY contentChildrenChanged FINAL)
+    Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged FINAL)
+    Q_PROPERTY(QQuickItem *currentItem READ currentItem NOTIFY currentItemChanged FINAL)
+    // 2.5 (Qt 5.12)
+    Q_PROPERTY(qreal contentWidth READ contentWidth WRITE setContentWidth RESET resetContentWidth NOTIFY contentWidthChanged FINAL REVISION(2, 5))
+    Q_PROPERTY(qreal contentHeight READ contentHeight WRITE setContentHeight RESET resetContentHeight NOTIFY contentHeightChanged FINAL REVISION(2, 5))
+    Q_CLASSINFO("DefaultProperty", "contentData")
+    QML_NAMED_ELEMENT(Container)
+    QML_ADDED_IN_VERSION(2, 0)
+
+public:
+    explicit QQuickContainer(QQuickItem *parent = nullptr);
+    ~QQuickContainer();
+
+    int count() const;
+    Q_INVOKABLE QQuickItem *itemAt(int index) const;
+    Q_INVOKABLE void addItem(QQuickItem *item);
+    Q_INVOKABLE void insertItem(int index, QQuickItem *item);
+    Q_INVOKABLE void moveItem(int from, int to);
+    Q_INVOKABLE void removeItem(QQuickItem *item);
+    // 2.3 (Qt 5.10)
+    Q_REVISION(2, 3) Q_INVOKABLE QQuickItem *takeItem(int index);
+
+    QVariant contentModel() const;
+    QQmlListProperty<QObject> contentData();
+    QQmlListProperty<QQuickItem> contentChildren();
+
+    int currentIndex() const;
+    QQuickItem *currentItem() const;
+
+    // 2.5 (Qt 5.12)
+    qreal contentWidth() const;
+    void setContentWidth(qreal width);
+    void resetContentWidth();
+
+    qreal contentHeight() const;
+    void setContentHeight(qreal height);
+    void resetContentHeight();
+
+public Q_SLOTS:
+    void setCurrentIndex(int index);
+    // 2.1 (Qt 5.8)
+    Q_REVISION(2, 1) void incrementCurrentIndex();
+    Q_REVISION(2, 1) void decrementCurrentIndex();
+
+Q_SIGNALS:
+    void countChanged();
+    void contentChildrenChanged();
+    void currentIndexChanged();
+    void currentItemChanged();
+    // 2.5 (Qt 5.12)
+    Q_REVISION(2, 5) void contentWidthChanged();
+    Q_REVISION(2, 5) void contentHeightChanged();
+
+protected:
+    QQuickContainer(QQuickContainerPrivate &dd, QQuickItem *parent);
+
+    void componentComplete() override;
+
+    void itemChange(ItemChange change, const ItemChangeData &data) override;
+    void contentItemChange(QQuickItem *newItem, QQuickItem *oldItem) override;
+
+    virtual bool isContent(QQuickItem *item) const;
+    virtual void itemAdded(int index, QQuickItem *item);
+    virtual void itemMoved(int index, QQuickItem *item);
+    virtual void itemRemoved(int index, QQuickItem *item);
+
+private:
+    Q_DISABLE_COPY(QQuickContainer)
+    Q_DECLARE_PRIVATE(QQuickContainer)
+    Q_PRIVATE_SLOT(d_func(), void _q_currentIndexChanged())
+};
+
+QT_END_NAMESPACE
+
+#endif // QQUICKCONTAINER_P_H