mirror of https://github.com/TTimo/GtkRadiant.git
112 lines
2.4 KiB
C
112 lines
2.4 KiB
C
|
/*
|
||
|
|
Copyright (C) 2001-2006, William Joseph.
|
||
|
|
All Rights Reserved.
|
||
|
|
|
||
|
|
This file is part of GtkRadiant.
|
||
|
|
|
||
|
|
GtkRadiant is free software; you can redistribute it and/or modify
|
||
|
|
it under the terms of the GNU General Public License as published by
|
||
|
|
the Free Software Foundation; either version 2 of the License, or
|
||
|
|
(at your option) any later version.
|
||
|
|
|
||
|
|
GtkRadiant is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with GtkRadiant; if not, write to the Free Software
|
||
|
|
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#if !defined(INCLUDED_IUNDO_H)
|
||
|
|
#define INCLUDED_IUNDO_H
|
||
|
|
|
||
|
|
/// \file
|
||
|
|
/// \brief The undo-system interface. Uses the 'memento' pattern.
|
||
|
|
|
||
|
|
#include <cstddef>
|
||
|
|
#include "generic/constant.h"
|
||
|
|
|
||
|
|
class UndoMemento
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
virtual void release() = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Undoable
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
virtual UndoMemento* exportState() const = 0;
|
||
|
|
virtual void importState(const UndoMemento* state) = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
class UndoObserver
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
virtual void save(Undoable* undoable) = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
class Callback;
|
||
|
|
|
||
|
|
class UndoTracker
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
virtual void clear() = 0;
|
||
|
|
virtual void begin() = 0;
|
||
|
|
virtual void undo() = 0;
|
||
|
|
virtual void redo() = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
class UndoSystem
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
INTEGER_CONSTANT(Version, 1);
|
||
|
|
STRING_CONSTANT(Name, "undo");
|
||
|
|
|
||
|
|
virtual UndoObserver* observer(Undoable* undoable) = 0;
|
||
|
|
virtual void release(Undoable* undoable) = 0;
|
||
|
|
|
||
|
|
virtual std::size_t size() const = 0;
|
||
|
|
virtual void start() = 0;
|
||
|
|
virtual void finish(const char* command) = 0;
|
||
|
|
virtual void undo() = 0;
|
||
|
|
virtual void redo() = 0;
|
||
|
|
virtual void clear() = 0;
|
||
|
|
|
||
|
|
virtual void trackerAttach(UndoTracker& tracker) = 0;
|
||
|
|
virtual void trackerDetach(UndoTracker& tracker) = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
#include "modulesystem.h"
|
||
|
|
|
||
|
|
template<typename Type>
|
||
|
|
class GlobalModule;
|
||
|
|
typedef GlobalModule<UndoSystem> GlobalUndoModule;
|
||
|
|
|
||
|
|
template<typename Type>
|
||
|
|
class GlobalModuleRef;
|
||
|
|
typedef GlobalModuleRef<UndoSystem> GlobalUndoModuleRef;
|
||
|
|
|
||
|
|
inline UndoSystem& GlobalUndoSystem()
|
||
|
|
{
|
||
|
|
return GlobalUndoModule::getTable();
|
||
|
|
}
|
||
|
|
|
||
|
|
class UndoableCommand
|
||
|
|
{
|
||
|
|
const char* m_command;
|
||
|
|
public:
|
||
|
|
UndoableCommand(const char* command) : m_command(command)
|
||
|
|
{
|
||
|
|
GlobalUndoSystem().start();
|
||
|
|
}
|
||
|
|
~UndoableCommand()
|
||
|
|
{
|
||
|
|
GlobalUndoSystem().finish(m_command);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#endif
|