1 files changed, 68 insertions, 0 deletions
diff --git a/src/gui/util/qundostack_p.h b/src/gui/util/qundostack_p.h
new file mode 100644
index 0000000000..d655d5fdf5
--- /dev/null
+++ b/src/gui/util/qundostack_p.h
@@ -0,0 +1,68 @@
+// Copyright (C) 2020 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 QUNDOSTACK_P_H
+#define QUNDOSTACK_P_H
+
+#include <QtGui/private/qtguiglobal_p.h>
+#include <private/qobject_p.h>
+#include <QtCore/qlist.h>
+#include <QtCore/qstring.h>
+#if QT_CONFIG(action)
+#  include <QtGui/qaction.h>
+#endif
+
+#include "qundostack.h"
+
+QT_BEGIN_NAMESPACE
+class QUndoCommand;
+class QUndoGroup;
+
+//
+//  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.
+//
+
+class QUndoCommandPrivate
+{
+public:
+    QUndoCommandPrivate() : id(-1), obsolete(false) {}
+    QList<QUndoCommand*> child_list;
+    QString text;
+    QString actionText;
+    int id;
+    bool obsolete;
+};
+
+#if QT_CONFIG(undostack)
+
+class QUndoStackPrivate : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QUndoStack)
+public:
+    QUndoStackPrivate() : index(0), clean_index(0), group(nullptr), undo_limit(0) {}
+
+    QList<QUndoCommand*> command_list;
+    QList<QUndoCommand*> macro_stack;
+    int index;
+    int clean_index;
+    QUndoGroup *group;
+    int undo_limit;
+
+    void setIndex(int idx, bool clean);
+    bool checkUndoLimit();
+
+#ifndef QT_NO_ACTION
+    static void setPrefixedText(QAction *action, const QString &prefix, const QString &defaultText, const QString &text);
+#endif
+};
+
+QT_END_NAMESPACE
+#endif // QT_CONFIG(undostack)
+#endif // QUNDOSTACK_P_H