143 lines
3.0 KiB
C++
143 lines
3.0 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_UNDOLIB_H )
|
|
#define INCLUDED_UNDOLIB_H
|
|
|
|
#include "iundo.h"
|
|
#include "mapfile.h"
|
|
#include "warnings.h"
|
|
#include "generic/callback.h"
|
|
|
|
template<typename Copyable>
|
|
class BasicUndoMemento : public UndoMemento
|
|
{
|
|
Copyable m_data;
|
|
public:
|
|
BasicUndoMemento( const Copyable& data )
|
|
: m_data( data ){
|
|
}
|
|
|
|
void release(){
|
|
delete this;
|
|
}
|
|
|
|
const Copyable& get() const {
|
|
return m_data;
|
|
}
|
|
};
|
|
|
|
|
|
template<typename Copyable>
|
|
class ObservedUndoableObject : public Undoable
|
|
{
|
|
typedef Callback<void (const Copyable&)> ImportCallback;
|
|
|
|
Copyable& m_object;
|
|
ImportCallback m_importCallback;
|
|
UndoObserver* m_undoQueue;
|
|
MapFile* m_map;
|
|
public:
|
|
|
|
ObservedUndoableObject<Copyable>( Copyable & object, const ImportCallback &importCallback )
|
|
: m_object( object ), m_importCallback( importCallback ), m_undoQueue( 0 ), m_map( 0 )
|
|
{
|
|
}
|
|
~ObservedUndoableObject(){
|
|
}
|
|
|
|
MapFile* map(){
|
|
return m_map;
|
|
}
|
|
|
|
void instanceAttach( MapFile* map ){
|
|
m_map = map;
|
|
m_undoQueue = GlobalUndoSystem().observer( this );
|
|
}
|
|
void instanceDetach( MapFile* map ){
|
|
m_map = 0;
|
|
m_undoQueue = 0;
|
|
GlobalUndoSystem().release( this );
|
|
}
|
|
|
|
void save(){
|
|
if ( m_map != 0 ) {
|
|
m_map->changed();
|
|
}
|
|
if ( m_undoQueue != 0 ) {
|
|
m_undoQueue->save( this );
|
|
}
|
|
}
|
|
|
|
UndoMemento* exportState() const {
|
|
return new BasicUndoMemento<Copyable>( m_object );
|
|
}
|
|
void importState( const UndoMemento* state ){
|
|
save();
|
|
m_importCallback( ( static_cast<const BasicUndoMemento<Copyable>*>( state ) )->get() );
|
|
}
|
|
};
|
|
|
|
template<typename Copyable>
|
|
class UndoableObject : public Undoable
|
|
{
|
|
Copyable& m_object;
|
|
UndoObserver* m_undoQueue;
|
|
MapFile* m_map;
|
|
|
|
public:
|
|
UndoableObject( Copyable& object )
|
|
: m_object( object ), m_undoQueue( 0 ), m_map( 0 )
|
|
{
|
|
}
|
|
~UndoableObject(){
|
|
}
|
|
|
|
void instanceAttach( MapFile* map ){
|
|
m_map = map;
|
|
m_undoQueue = GlobalUndoSystem().observer( this );
|
|
}
|
|
void instanceDetach( MapFile* map ){
|
|
m_map = 0;
|
|
m_undoQueue = 0;
|
|
GlobalUndoSystem().release( this );
|
|
}
|
|
|
|
void save(){
|
|
if ( m_map != 0 ) {
|
|
m_map->changed();
|
|
}
|
|
if ( m_undoQueue != 0 ) {
|
|
m_undoQueue->save( this );
|
|
}
|
|
}
|
|
|
|
UndoMemento* exportState() const {
|
|
return new BasicUndoMemento<Copyable>( m_object );
|
|
}
|
|
void importState( const UndoMemento* state ){
|
|
save();
|
|
m_object = ( static_cast<const BasicUndoMemento<Copyable>*>( state ) )->get();
|
|
}
|
|
};
|
|
|
|
#endif
|