libquentier 0.8.0
The library for rich desktop clients of Evernote service
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QuentierUndoCommand.h
1/*
2 * Copyright 2016-2024 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#pragma once
20
21#include <quentier/types/ErrorString.h>
22
23#include <QObject>
24#include <QUndoCommand>
25
26namespace quentier {
27
53class QuentierUndoCommand : public QObject, public QUndoCommand
54{
56public:
57 QuentierUndoCommand(QUndoCommand * parent = nullptr);
58 QuentierUndoCommand(const QString & text, QUndoCommand * parent = nullptr);
59 ~QuentierUndoCommand() noexcept override;
60
61 void undo() final;
62 void redo() final;
63
64 [[nodiscard]] bool onceUndoExecuted() const noexcept
65 {
66 return m_onceUndoExecuted;
67 }
68
70 void notifyError(ErrorString error);
71
72protected:
73 virtual void undoImpl() = 0;
74 virtual void redoImpl() = 0;
75
76private:
77 bool m_onceUndoExecuted = false;
78};
79
80} // namespace quentier
The ErrorString class encapsulates two (or more) strings which are meant to contain translatable (bas...
Definition ErrorString.h:43
The QuentierUndoCommand class has the sole purpose of working around one quirky aspect of Qt's undo/r...
Definition QuentierUndoCommand.h:54
The Result template class represents the bare bones result monad implementation which either contains...
Definition Result.h:38