editor.hpp

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/*****************************************************************************
 
 This file is part of QSS Solver.
 
 QSS Solver 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 3 of the License, or
 (at your option) any later version.
 
 QSS Solver 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 QSS Solver.  If not, see <http://www.gnu.org/licenses/>.
 
 ******************************************************************************/
 
#pragma once
 
#include <QtGui>
 
#include <modeleditor.hpp>
 
class Editor {
  public:
  static ModelEditor* instance(QWidget* parent = nullptr, QString name = QString())
  {
    if (!_instance) {
      _instance = new ModelEditor(parent, name);
    }
    return _instance;
  }
  static void drop()
  {
    if (!_instance) {
      delete _instance;
    } 
    _instance = nullptr;
  }
 
  private:
  Editor() {}
  Editor(const Editor&);             // hide copy constructor
  Editor& operator=(const Editor&);  // hide assign op
  static ModelEditor* _instance;
};