libquentier 0.5.0
The library for rich desktop clients of Evernote service
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QuentierUndoCommand.h
1/*
2 * Copyright 2016-2020 Dmitry Ivanov
3 *
4 * This file is part of libquentier
5 *
6 * libquentier is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as published by
8 * the Free Software Foundation, version 3 of the License.
9 *
10 * libquentier is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with libquentier. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19#ifndef LIB_QUENTIER_UTILITY_QUENTIER_UNDO_COMMAND_H
20#define LIB_QUENTIER_UTILITY_QUENTIER_UNDO_COMMAND_H
21
22#include <quentier/types/ErrorString.h>
23
24#include <QObject>
25#include <QUndoCommand>
26
27namespace quentier {
28
54class QuentierUndoCommand : public QObject, public QUndoCommand
55{
56 Q_OBJECT
57public:
58 QuentierUndoCommand(QUndoCommand * parent = nullptr);
59 QuentierUndoCommand(const QString & text, QUndoCommand * parent = nullptr);
60 virtual ~QuentierUndoCommand() override;
61
62 virtual void undo() override final;
63 virtual void redo() override final;
64
65 bool onceUndoExecuted() const
66 {
67 return m_onceUndoExecuted;
68 }
69
70Q_SIGNALS:
71 void notifyError(ErrorString error);
72
73protected:
74 virtual void undoImpl() = 0;
75 virtual void redoImpl() = 0;
76
77private:
78 bool m_onceUndoExecuted;
79};
80
81} // namespace quentier
82
83#endif // LIB_QUENTIER_UTILITY_QUENTIER_UNDO_COMMAND_H
The ErrorString class encapsulates two (or more) strings which are meant to contain translatable (bas...
Definition ErrorString.h:44
The QuentierUndoCommand class has the sole purpose of working around one quirky aspect of Qt's undo/r...
Definition QuentierUndoCommand.h:55