92 lines
2.5 KiB
C++
92 lines
2.5 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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** Copyright (C) 2010 R. van Twisk (librecad@rvt.dds.nl)
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** Copyright (C) 2001-2003 RibbonSoft. All rights reserved.
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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 RS_UNDOLISTITEM_H
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#define RS_UNDOLISTITEM_H
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#include <iosfwd>
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#include <set>
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#include "rs_entity.h"
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#include "rs_undoable.h"
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/**
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* An Undo Cycle represents an action that was triggered and can
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* be undone. It stores all the pointers to the Undoables affected by
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* the action. Undoables are entities in a container that can be
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* created and deleted.
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*
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* Undo Cycles are stored within classes derived from RS_Undo.
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*
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* @see RS_Undoable
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* @see RS_Undo
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*
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* @author Andrew Mustun
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*/
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class RS_UndoCycle {
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public:
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/**
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* @param type Type of undo item.
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*/
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RS_UndoCycle(/*RS2::UndoType type*/)=default;
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/**
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* Adds an Undoable to this Undo Cycle. Every Cycle can contain one or
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* more Undoables.
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*/
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void addUndoable(RS_Undoable* u);
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/**
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* Removes an undoable from the list.
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*/
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void removeUndoable(RS_Undoable* u);
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/**
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* Return number of undoables in cycle
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*/
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size_t size(void);
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//! change undo state of all undoable in the current cycle
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void changeUndoState();
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friend std::ostream& operator << (std::ostream& os, RS_UndoCycle& uc);
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friend class RS_Undo;
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std::set<RS_Undoable*> const& getUndoables() const;
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private:
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//! Undo type:
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//RS2::UndoType type;
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//! List of entity id's that were affected by this action
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std::set<RS_Undoable*> undoables;
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};
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#endif
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