File indexing completed on 2024-05-12 15:26:59

 /***************************************************************************
     File                 : commandtemplates.h
     Project              : LabPlot
     Description          : Undo/Redo command templates
     --------------------------------------------------------------------
     Copyright            : (C) 2009 Tilman Benkert (thzs@gmx.net)
     Copyright            : (C) 2017 by Alexander Semke (alexander.semke@web.de)
  ***************************************************************************/
 
 /***************************************************************************
  *                                                                         *
  *  This program 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.                                    *
  *                                                                         *
  *  This program 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 this program; if not, write to the Free Software           *
  *   Foundation, Inc., 51 Franklin Street, Fifth Floor,                    *
  *   Boston, MA  02110-1301  USA                                           *
  *                                                                         *
  ***************************************************************************/
 
 #ifndef COMMANDTEMPLATES_H
 #define COMMANDTEMPLATES_H
 
 #include <QUndoCommand>
 
 #include <KLocalizedString>
 
 template <class target_class, typename value_type>
 class StandardSetterCmd : public QUndoCommand {
 public:
     StandardSetterCmd(target_class* target, value_type target_class::* field, value_type newValue, const KLocalizedString& description) // use ki18n("%1: ...")
         : m_target(target), m_field(field), m_otherValue(newValue) {
             setText(description.subs(m_target->name()).toString());
         }
 
     virtual void initialize() {};
     virtual void finalize() {};
 
     void redo() override {
         initialize();
         value_type tmp = *m_target.*m_field;
         *m_target.*m_field = m_otherValue;
         m_otherValue = tmp;
         finalize();
     }
 
     void undo() override { redo(); }
 
 protected:
     target_class* m_target;
     value_type target_class::*m_field;
     value_type m_otherValue;
 };
 
 template <class target_class, typename value_type>
 class StandardMacroSetterCmd : public QUndoCommand {
 public:
     StandardMacroSetterCmd(target_class* target, value_type target_class::*field, value_type newValue, const KLocalizedString& description) // use ki18n("%1: ...")
         : m_target(target), m_field(field), m_otherValue(newValue) {
             setText(description.subs(m_target->name()).toString());
         }
 
     virtual void initialize() {};
     virtual void finalize() {};
     virtual void finalizeUndo() {};
 
     void redo() override {
         initialize();
         value_type tmp = *m_target.*m_field;
         *m_target.*m_field = m_otherValue;
         m_otherValue = tmp;
         finalize();
     }
 
     //call finalizeUndo() at the end where only the signal is emitted
     //and no actual finalize-method is called that can potentially
     //cause  new entries on the undo-stack
     void undo() override {
         initialize();
         value_type tmp = *m_target.*m_field;
         *m_target.*m_field = m_otherValue;
         m_otherValue = tmp;
         finalizeUndo();
     }
 
 protected:
     target_class* m_target;
     value_type target_class::*m_field;
     value_type m_otherValue;
 };
 
 template <class target_class, typename value_type>
 class StandardSwapMethodSetterCmd : public QUndoCommand {
 public:
     StandardSwapMethodSetterCmd(target_class* target, value_type (target_class::*method)(value_type), value_type newValue, const KLocalizedString& description) // use ki18n("%1: ...")
         : m_target(target), m_method(method), m_otherValue(newValue) {
             setText(description.subs(m_target->name()).toString());
         }
 
     virtual void initialize() {};
     virtual void finalize() {};
 
     void redo() override {
         initialize();
         m_otherValue = (*m_target.*m_method)(m_otherValue);
         finalize();
     }
 
     void undo() override { redo(); }
 
 protected:
     target_class* m_target;
     value_type (target_class::*m_method)(value_type);
     value_type m_otherValue;
 };
 
 #endif