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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
++ // Qt-Security score:significant reason:default
++
++ #ifndef PREVIEWFRAME_H
++ #define PREVIEWFRAME_H
++
++ #include <QtWidgets/qframe.h>
++ #include <QtCore/qpointer.h>
++
++ QT_BEGIN_NAMESPACE
++
++ class QMdiArea;
++ class QMdiSubWindow;
++
++ namespace qdesigner_internal {
++
++ class PreviewFrame: public QFrame
++ {
++ Q_OBJECT
++ public:
++ explicit PreviewFrame(QWidget *parent);
++
++ void setPreviewPalette(const QPalette &palette);
++ void setSubWindowActive(bool active);
++
++ private:
++ // The user can on some platforms close the mdi child by invoking the system menu.
++ // Ensure a child is present.
++ QMdiSubWindow *ensureMdiSubWindow();
++ QMdiArea *m_mdiArea;
++ QPointer<QMdiSubWindow> m_mdiSubWindow;
++ };
++
++ } // namespace qdesigner_internal
++
++ QT_END_NAMESPACE
++
++ #endif