57 lines
1.9 KiB
C++
57 lines
1.9 KiB
C++
/****************************************************************************
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**
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** This file is part of the LibreCAD project, a 2D CAD program
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**
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** Copyright (C) 2018 A. Stebich (librecad@mail.lordofbikes.de)
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**
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 as published by the Free Software
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** Foundation and appearing in the file gpl-2.0.txt included in the
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** packaging of this file.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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**
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** This copyright notice MUST APPEAR in all copies of the script!
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**
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**********************************************************************/
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#ifndef LC_UNDOSECTION_H
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#define LC_UNDOSECTION_H
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class RS_Document;
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class RS_Undoable;
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/** \brief This class is a wrapper for RS_Undo methods
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*
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* It's important that calls to RS_Undo::startUndoCycle() and
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* RS_Undo::endUndoCycle() are balanced.
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* On instantiation the constructor calls startUndoCycle().
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* The class handles also validation of the RS_Document pointer.
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* When the instance is leaving the scope, the destructor
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* calls endUndoCycle().
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* This way the balance is guaranteed.
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* It simplifies undo handling specially in RS_Creation and RS_Modification classes
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*/
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class LC_UndoSection
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{
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public:
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LC_UndoSection(RS_Document * doc, const bool handleUndo = true);
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~LC_UndoSection();
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void addUndoable(RS_Undoable * undoable);
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private:
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RS_Document *document {nullptr};
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bool valid {true};
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};
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#endif // LC_UNDOSECTION_H
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