command.hpp

// Ixte - a temporal structure editor for musical composition and analysis
// Copyright (C) 2014 Raphael Sousa Santos, http://www.raphaelss.com
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

#ifndef COMMAND_HPP_IXTE_INCLUDED
#define COMMAND_HPP_IXTE_INCLUDED
#include <memory>
#include "graphic_system.hpp"

namespace ixte {

class command {
public:
  enum type {
    MKLINE, RMLINE, MKPOINT, RMPOINT, GROUP
  };
  virtual ~command() = 0;
  virtual void execute(graphic_system &sys) const = 0;
  virtual void execute_reverse(graphic_system &sys) const;
  virtual type cmd_type() const = 0;

  static std::unique_ptr<command> combine
      (std::unique_ptr<command> &&lhs, std::unique_ptr<command> &&rhs);
};

}

#endif