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++ // Copyright (C) 2023 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #ifndef MAINWINDOW_H
++ #define MAINWINDOW_H
++
++ #include <QtWidgets/qwidget.h>
++
++ QT_BEGIN_NAMESPACE
++ class QToolButton;
++ class QScxmlStateMachine;
++ class QLabel;
++ class QComboBox;
++ QT_END_NAMESPACE
++
++ class MainWindow : public QWidget
++ {
++ Q_OBJECT
++
++ public:
++ explicit MainWindow(QScxmlStateMachine *machine, QWidget *parent = nullptr);
++
++ private:
++ QScxmlStateMachine *m_machine = nullptr;
++ QList<QList<QToolButton *>> m_buttons;
++ QToolButton *m_startButton = nullptr;
++ QToolButton *m_undoButton = nullptr;
++ QLabel *m_label = nullptr;
++ QComboBox *m_chooser = nullptr;
++ };
++
++ #endif // MAINWINDOW_H