1 files changed, 64 insertions, 0 deletions
diff --git a/src/gui/util/qundogroup.h b/src/gui/util/qundogroup.h
new file mode 100644
index 0000000000..e92f4f46b0
--- /dev/null
+++ b/src/gui/util/qundogroup.h
@@ -0,0 +1,64 @@
+// 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 QUNDOGROUP_H
+#define QUNDOGROUP_H
+
+#include <QtGui/qtguiglobal.h>
+#include <QtCore/qobject.h>
+#include <QtCore/qstring.h>
+
+QT_REQUIRE_CONFIG(undogroup);
+
+QT_BEGIN_NAMESPACE
+
+class QUndoGroupPrivate;
+class QUndoStack;
+class QAction;
+
+class Q_GUI_EXPORT QUndoGroup : public QObject
+{
+    Q_OBJECT
+    Q_DECLARE_PRIVATE(QUndoGroup)
+
+public:
+    explicit QUndoGroup(QObject *parent = nullptr);
+    ~QUndoGroup();
+
+    void addStack(QUndoStack *stack);
+    void removeStack(QUndoStack *stack);
+    QList<QUndoStack*> stacks() const;
+    QUndoStack *activeStack() const;
+
+#ifndef QT_NO_ACTION
+    QAction *createUndoAction(QObject *parent, const QString &prefix = QString()) const;
+    QAction *createRedoAction(QObject *parent, const QString &prefix = QString()) const;
+#endif // QT_NO_ACTION
+
+    bool canUndo() const;
+    bool canRedo() const;
+    QString undoText() const;
+    QString redoText() const;
+    bool isClean() const;
+
+public Q_SLOTS:
+    void undo();
+    void redo();
+    void setActiveStack(QUndoStack *stack);
+
+Q_SIGNALS:
+    void activeStackChanged(QUndoStack *stack);
+    void indexChanged(int idx);
+    void cleanChanged(bool clean);
+    void canUndoChanged(bool canUndo);
+    void canRedoChanged(bool canRedo);
+    void undoTextChanged(const QString &undoText);
+    void redoTextChanged(const QString &redoText);
+
+private:
+    Q_DISABLE_COPY(QUndoGroup)
+};
+
+QT_END_NAMESPACE
+
+#endif // QUNDOGROUP_H