# operation.h

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    00001 // -*- C++ -*-
    00002
    00003 /*
    00004  * GChemPaint library
    00005  * operation.h
    00006  *
    00007  * Copyright (C) 2002-2008 Jean Bréfort <jean.brefort@normalesup.org>
    00008  *
    00009  * This program is free software; you can redistribute it and/or
    00010  * modify it under the terms of the GNU General Public License as
    00011  * published by the Free Software Foundation; either version 2 of the
    00012  * License, or (at your option) any later version.
    00013  *
    00014  * This program is distributed in the hope that it will be useful,
    00015  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    00016  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00017  * GNU General Public License for more details.
    00018  *
    00019  * You should have received a copy of the GNU General Public License
    00020  * along with this program; if not, write to the Free Software
    00021  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301
    00022  * USA
    00023  */
    00024
    00026 #ifndef GCHEMPAINT_OPERATION_H
    00027 #define GCHEMPAINT_OPERATION_H
    00028
    00029 #include <gcu/macros.h>
    00030 #include <gcu/object.h>
    00031
    00033 namespace gcp {
    00034
    00035 class Document;
    00036
    00041 typedef enum
    00042 {
    00046         GCP_ADD_OPERATION,
    00050         GCP_DELETE_OPERATION,
    00054         GCP_MODIFY_OPERATION,
    00055 } OperationType;
    00056
    00061 class Operation
    00062 {
    00063 public:
    00071         Operation (Document *pDoc, unsigned long ID);
    00072         virtual ~Operation ();
    00073
    00077         virtual void Undo () = 0;
    00081         virtual void Redo () = 0;
    00105         virtual void AddObject (gcu::Object* pObject, unsigned type = 0);
    00117         virtual void AddNode (xmlNodePtr node, unsigned type = 0);
    00118
    00119 protected:
    00129         void Add (unsigned type = 0);
    00139         void Delete (unsigned type = 0);
    00140
    00141 protected:
    00145         xmlNodePtr* m_Nodes;
    00146
    00147 private:
    00148         gcp::Document* m_pDoc;
    00149
    00150 GCU_RO_PROP (unsigned long, ID);
    00151 };
    00152
    00156 class AddOperation: public Operation
    00157 {
    00158 public:
    00166         AddOperation (gcp::Document *pDoc, unsigned long ID);
    00167         virtual ~AddOperation ();
    00168
    00172         void Undo ();
    00176         void Redo ();
    00177 };
    00178
    00182 class DeleteOperation: public Operation
    00183 {
    00184 public:
    00192         DeleteOperation (gcp::Document *pDoc, unsigned long ID);
    00193         virtual ~DeleteOperation ();
    00194
    00198         void Undo ();
    00202         void Redo ();
    00203 };
    00204
    00208 class ModifyOperation: public Operation
    00209 {
    00210 public:
    00218         ModifyOperation (gcp::Document *pDoc, unsigned long ID);
    00219         virtual ~ModifyOperation ();
    00220
    00224         void Undo ();
    00228         void Redo ();
    00229 };
    00230
    00231 }       // namespace gcp
    00232
    00233 #endif //GCHEMPAINT_OPERATION_H