mirror of
https://github.com/aseprite/aseprite.git
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99 lines
2.7 KiB
C++
99 lines
2.7 KiB
C++
/* Aseprite
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* Copyright (C) 2001-2013 David Capello
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef APP_DOCUMENT_UNDO_H_INCLUDED
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#define APP_DOCUMENT_UNDO_H_INCLUDED
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#pragma once
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#include "base/compiler_specific.h"
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#include "base/disable_copying.h"
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#include "base/unique_ptr.h"
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#include "raster/sprite_position.h"
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#include "undo/undo_history.h"
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namespace undo {
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class ObjectsContainer;
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class Undoer;
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}
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namespace app {
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namespace undoers {
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class CloseGroup;
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}
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using namespace raster;
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class DocumentUndo : public undo::UndoHistoryDelegate {
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public:
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DocumentUndo();
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bool isEnabled() const { return m_enabled; }
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void setEnabled(bool state) { m_enabled = state; }
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bool canUndo() const;
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bool canRedo() const;
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void doUndo();
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void doRedo();
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void clearRedo();
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bool isSavedState() const;
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void markSavedState();
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// UndoHistoryDelegate implementation.
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undo::ObjectsContainer* getObjects() const OVERRIDE { return m_objects; }
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size_t getUndoSizeLimit() const OVERRIDE;
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void pushUndoer(undo::Undoer* undoer);
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bool implantUndoerInLastGroup(undo::Undoer* undoer);
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const char* getNextUndoLabel() const;
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const char* getNextRedoLabel() const;
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SpritePosition getNextUndoSpritePosition() const;
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SpritePosition getNextRedoSpritePosition() const;
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undo::UndoersCollector* getDefaultUndoersCollector() {
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return m_undoHistory;
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}
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private:
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undoers::CloseGroup* getNextUndoGroup() const;
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undoers::CloseGroup* getNextRedoGroup() const;
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// Collection of objects used by UndoHistory to reference deleted
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// objects that are re-created by an Undoer. The container keeps an
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// ID that is saved in the serialization process, and loaded in the
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// deserialization process. The ID can be used by different undoers
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// to keep references to deleted objects.
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base::UniquePtr<undo::ObjectsContainer> m_objects;
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// Stack of undoers to undo operations.
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base::UniquePtr<undo::UndoHistory> m_undoHistory;
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bool m_enabled;
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DISABLE_COPYING(DocumentUndo);
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};
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} // namespace app
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#endif
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