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diff --git a/src/core/render_widget_host_view_qt_delegate_item.h b/src/core/render_widget_host_view_qt_delegate_item.h
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+/****************************************************************************
+**
+** Copyright (C) 2022 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtWebEngine module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** 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 https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://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.LGPL3 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-3.0.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 (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef RENDER_WIDGET_HOST_VIEW_QT_DELEGATE_ITEM_H
+#define RENDER_WIDGET_HOST_VIEW_QT_DELEGATE_ITEM_H
+
+#include "compositor/compositor.h"
+#include "render_widget_host_view_qt_delegate.h"
+
+#include <QtQuick/QQuickItem>
+
+QT_BEGIN_NAMESPACE
+class QQuickWebEngineView;
+class QQuickWebEngineViewPrivate;
+class QWebEnginePage;
+class QWebEngineViewPrivate;
+QT_END_NAMESPACE
+
+namespace QtWebEngineCore {
+
+class RenderWidgetHostViewQtDelegateClient;
+class WebContentsAdapterClient;
+class WebEngineQuickWidget;
+
+class WidgetDelegate
+{
+public:
+    virtual ~WidgetDelegate() = default;
+    virtual void InitAsPopup(const QRect &screenRect) = 0;
+    virtual void SetInputMethodEnabled(bool) { }
+    virtual void SetInputMethodHints(Qt::InputMethodHints) { }
+    virtual void SetClearColor(const QColor &)  { }
+    virtual bool ActiveFocusOnPress() = 0;
+    virtual void MoveWindow(const QPoint & ) { }
+    virtual void Bind(WebContentsAdapterClient *) = 0;
+    virtual void Unbind() = 0;
+    virtual void Destroy() = 0;
+    virtual void Resize(int, int) { }
+    virtual QWindow *Window() { return nullptr; }
+};
+
+// Useful information keyboard and mouse QEvent propagation.
+// A RenderWidgetHostViewQtDelegateItem instance initialized as a popup will receive
+// no keyboard focus (so all keyboard QEvents will be sent to the parent RWHVQD instance),
+// but will still receive mouse input (all mouse QEvent moves and clicks will be given to the popup
+// RWHVQD instance, and the mouse interaction area covers the surface of the whole parent
+// QWebEngineView, and not only the smaller surface that an HTML select popup would occupy).
+class Q_WEBENGINECORE_PRIVATE_EXPORT RenderWidgetHostViewQtDelegateItem
+        : public QQuickItem
+        , public RenderWidgetHostViewQtDelegate
+        , public Compositor::Observer
+{
+    Q_OBJECT
+public:
+    RenderWidgetHostViewQtDelegateItem(RenderWidgetHostViewQtDelegateClient *client, bool isPopup);
+    ~RenderWidgetHostViewQtDelegateItem();
+
+    void initAsPopup(const QRect&) override;
+    QRectF viewGeometry() const override;
+    QRect windowGeometry() const override;
+    void setKeyboardFocus() override;
+    bool hasKeyboardFocus() override;
+    void lockMouse() override;
+    void unlockMouse() override;
+    void show() override;
+    void hide() override;
+    bool isVisible() const override;
+    QWindow *Window() const override;
+    void updateCursor(const QCursor &) override;
+    void resize(int width, int height) override;
+    void move(const QPoint &screenPos) override;
+    void inputMethodStateChanged(bool editorVisible, bool passwordInput) override;
+    void setInputMethodHints(Qt::InputMethodHints) override;
+    void setClearColor(const QColor &color) override;
+    void unhandledWheelEvent(QWheelEvent *ev) override;
+
+    void readyToSwap() override;
+
+    void setWidgetDelegate(WidgetDelegate *delegate);
+
+protected:
+    bool event(QEvent *event) override;
+    void focusInEvent(QFocusEvent *event) override;
+    void focusOutEvent(QFocusEvent *event) override;
+    void mousePressEvent(QMouseEvent *event) override;
+    void mouseMoveEvent(QMouseEvent *event) override;
+    void mouseReleaseEvent(QMouseEvent *event) override;
+    void keyPressEvent(QKeyEvent *event) override;
+    void keyReleaseEvent(QKeyEvent *event) override;
+    void wheelEvent(QWheelEvent *event) override;
+    void touchEvent(QTouchEvent *event) override;
+    void hoverMoveEvent(QHoverEvent *event) override;
+    void hoverLeaveEvent(QHoverEvent *event) override;
+    QVariant inputMethodQuery(Qt::InputMethodQuery query) const override;
+    void inputMethodEvent(QInputMethodEvent *event) override;
+    void geometryChange(const QRectF &newGeometry, const QRectF &oldGeometry) override;
+    void itemChange(ItemChange change, const ItemChangeData &value) override;
+    QSGNode *updatePaintNode(QSGNode *, UpdatePaintNodeData *) override;
+
+    void adapterClientChanged(WebContentsAdapterClient *client) override;
+
+private Q_SLOTS:
+    void onBeforeRendering();
+    void onWindowPosChanged();
+    void onHide();
+
+private:
+    friend QWebEngineViewPrivate;
+    friend QQuickWebEngineViewPrivate;
+    friend WebEngineQuickWidget;
+
+    RenderWidgetHostViewQtDelegateClient *m_client;
+    bool m_isPopup;
+    QColor m_clearColor;
+    Qt::InputMethodHints m_inputMethodHints = {};
+    QList<QMetaObject::Connection> m_windowConnections;
+    WebContentsAdapterClient *m_adapterClient = nullptr;
+    QWebEnginePage *m_page = nullptr;
+    QQuickWebEngineView *m_view = nullptr;
+    WidgetDelegate *m_widgetDelegate = nullptr;
+};
+
+} // namespace QtWebEngineCore
+
+#endif // RENDER_WIDGET_HOST_VIEW_QT_DELEGATE_ITEM_H