1/****************************************************************************
2**
3** Copyright (C) 2016 The Qt Company Ltd.
4** Contact: https://www.qt.io/licensing/
5**
6** This file is part of the QtWidgets module of the Qt Toolkit.
7**
8** $QT_BEGIN_LICENSE:LGPL$
9** Commercial License Usage
10** Licensees holding valid commercial Qt licenses may use this file in
11** accordance with the commercial license agreement provided with the
12** Software or, alternatively, in accordance with the terms contained in
13** a written agreement between you and The Qt Company. For licensing terms
14** and conditions see https://www.qt.io/terms-conditions. For further
15** information use the contact form at https://www.qt.io/contact-us.
16**
17** GNU Lesser General Public License Usage
18** Alternatively, this file may be used under the terms of the GNU Lesser
19** General Public License version 3 as published by the Free Software
20** Foundation and appearing in the file LICENSE.LGPL3 included in the
21** packaging of this file. Please review the following information to
22** ensure the GNU Lesser General Public License version 3 requirements
23** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
24**
25** GNU General Public License Usage
26** Alternatively, this file may be used under the terms of the GNU
27** General Public License version 2.0 or (at your option) the GNU General
28** Public license version 3 or any later version approved by the KDE Free
29** Qt Foundation. The licenses are as published by the Free Software
30** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
31** included in the packaging of this file. Please review the following
32** information to ensure the GNU General Public License requirements will
33** be met: https://www.gnu.org/licenses/gpl-2.0.html and
34** https://www.gnu.org/licenses/gpl-3.0.html.
35**
36** $QT_END_LICENSE$
37**
38****************************************************************************/
39
40#ifndef QUNDOSTACK_P_H
41#define QUNDOSTACK_P_H
42
43#include <QtWidgets/private/qtwidgetsglobal_p.h>
44#include <private/qobject_p.h>
45#include <QtCore/qlist.h>
46#include <QtCore/qstring.h>
47#include <QtWidgets/qaction.h>
48
49#include "qundostack.h"
50
51QT_BEGIN_NAMESPACE
52class QUndoCommand;
53class QUndoGroup;
54
55//
56// W A R N I N G
57// -------------
58//
59// This file is not part of the Qt API. It exists for the convenience
60// of qapplication_*.cpp, qwidget*.cpp and qfiledialog.cpp. This header
61// file may change from version to version without notice, or even be removed.
62//
63// We mean it.
64//
65
66class QUndoCommandPrivate
67{
68public:
69 QUndoCommandPrivate() : id(-1), obsolete(false) {}
70 QList<QUndoCommand*> child_list;
71 QString text;
72 QString actionText;
73 int id;
74 bool obsolete;
75};
76
77#if QT_CONFIG(undostack)
78
79class QUndoStackPrivate : public QObjectPrivate
80{
81 Q_DECLARE_PUBLIC(QUndoStack)
82public:
83 QUndoStackPrivate() : index(0), clean_index(0), group(nullptr), undo_limit(0) {}
84
85 QList<QUndoCommand*> command_list;
86 QList<QUndoCommand*> macro_stack;
87 int index;
88 int clean_index;
89 QUndoGroup *group;
90 int undo_limit;
91
92 void setIndex(int idx, bool clean);
93 bool checkUndoLimit();
94};
95
96#ifndef QT_NO_ACTION
97class QUndoAction : public QAction
98{
99 Q_OBJECT
100public:
101 explicit QUndoAction(const QString &prefix, QObject *parent = nullptr);
102 void setTextFormat(const QString &textFormat, const QString &defaultText);
103public Q_SLOTS:
104 void setPrefixedText(const QString &text);
105private:
106 QString m_prefix;
107 QString m_defaultText;
108};
109#endif // QT_NO_ACTION
110
111QT_END_NAMESPACE
112#endif // QT_CONFIG(undostack)
113#endif // QUNDOSTACK_P_H
114

source code of qtbase/src/widgets/util/qundostack_p.h