1 /****************************************************************************
2 **
3 ** Copyright (C) 2016 Jochen Becher
4 ** Contact: https://www.qt.io/licensing/
5 **
6 ** This file is part of Qt Creator.
7 **
8 ** Commercial License Usage
9 ** Licensees holding valid commercial Qt licenses may use this file in
10 ** accordance with the commercial license agreement provided with the
11 ** Software or, alternatively, in accordance with the terms contained in
12 ** a written agreement between you and The Qt Company. For licensing terms
13 ** and conditions see https://www.qt.io/terms-conditions. For further
14 ** information use the contact form at https://www.qt.io/contact-us.
15 **
16 ** GNU General Public License Usage
17 ** Alternatively, this file may be used under the terms of the GNU
18 ** General Public License version 3 as published by the Free Software
19 ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
20 ** included in the packaging of this file. Please review the following
21 ** information to ensure the GNU General Public License requirements will
22 ** be met: https://www.gnu.org/licenses/gpl-3.0.html.
23 **
24 ****************************************************************************/
25 
26 #pragma once
27 
28 #include <QObject>
29 #include "qmt/infrastructure/qmt_global.h"
30 
31 QT_BEGIN_NAMESPACE
32 class QUndoStack;
33 QT_END_NAMESPACE
34 
35 namespace qmt {
36 
37 class UndoCommand;
38 
39 class QMT_EXPORT UndoController : public QObject
40 {
41     Q_OBJECT
42 
43 public:
44     explicit UndoController(QObject *parent = nullptr);
45     ~UndoController() override;
46 
undoStack()47     QUndoStack *undoStack() const { return m_undoStack; }
48 
49     void push(UndoCommand *cmd);
50     void beginMergeSequence(const QString &text);
51     void endMergeSequence();
52 
53     void reset();
54     void doNotMerge();
55 
56 private:
57     QUndoStack *m_undoStack = nullptr;
58     bool m_doNotMerge = false;
59 };
60 
61 } // namespace qmt
62