autocompletion.h

Go to the documentation of this file.

/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef AUTOCOMPLETION_H
#define AUTOCOMPLETION_H
 
#include "textbuf_type.h"
 
class AutoCompletion {
protected:
  Textbuf *textbuf;
 
private:
  std::string              initial_buf; 
 
  std::string_view         prefix;      
  std::string_view         query;       
 
  std::vector<std::string> suggestions;
  size_t                   current_suggestion_index;
 
public:
  AutoCompletion(Textbuf *textbuf) : textbuf(textbuf)
  {
    this->Reset();
  }
  virtual ~AutoCompletion() = default;
 
  // Returns true the textbuf was updated.
  bool AutoComplete();
  void Reset();
 
private:
  void InitSuggestions(std::string_view text);
 
  virtual std::vector<std::string> GetSuggestions(std::string_view prefix, std::string_view query) = 0;
  virtual void ApplySuggestion(std::string_view prefix, std::string_view suggestion) = 0;
};
 
#endif /* AUTOCOMPLETION_H */