/*!
 * @file shell_completion_plugin.h
 * @brief The Shell Completion Plugin
 */

#ifndef _SHELL_COMPLETION_PLUGIN_H
#define _SHELL_COMPLETION_PLUGIN_H

#include <list>
#include <vector>
#include <string>
#include "multi_type.h"

namespace OrxShell
{
  //! The Base of All Completors
  class CompletorPlugin
  {
    public:
      virtual void addToCompleteList(std::vector<std::string>& completionList, const std::string& completionBegin) const = 0;
      virtual ~CompletorPlugin() { };

      virtual CompletorPlugin* clone() const = 0;
    protected:
      CompletorPlugin() {};
  };

  class CompletorDefault : public CompletorPlugin
  {
    public:
      CompletorDefault(const MultiType* value);
      virtual void addToCompleteList(std::vector<std::string>& completionList, const std::string& completionBegin) const;

      virtual CompletorPlugin* clone() const;
    private:
      const MultiType*    _value;
  };


  //! Completor that completes static Arrays of Strings.
  class CompletorStringArray : public CompletorPlugin
  {
    public:
      CompletorStringArray(const std::string* stringArray, unsigned int size)
          : _stringArray(stringArray), _size(size) {};
      virtual void addToCompleteList(std::vector<std::string>& completionList, const std::string& completionBegin) const;

      virtual CompletorPlugin* clone() const;
    private:
      const std::string*   _stringArray;
      unsigned int         _size;
  };


  class CompletorList : public CompletorPlugin
  {
    public:
      CompletorList(const std::list<std::string>* list);
      virtual void addToCompleteList(std::vector<std::string>& completionList, const std::string& completionBegin) const;
      virtual CompletorPlugin* clone() const;

    private:
      const std::list<std::string>* _list;
  };



  //! Completor that completes FileSystem Entries.
  class CompletorFileSystem : public CompletorPlugin
  {
    public:
      CompletorFileSystem(const std::string& fileExtension = "",
                          const std::string& subDir = "");
      virtual void addToCompleteList(std::vector<std::string>& completionList, const std::string& completionBegin) const;
      virtual CompletorPlugin* clone() const;

    private:
      std::string             _fileExtension;
      std::string             _subDir;
  };




  //! A Templated Completor
  template<typename CLASS> class CompletorTList : public CompletorPlugin
  {
    public:
      CompletorTList(const std::list<CLASS*>& completionList);
      virtual void addToCompleteList(std::vector<std::string>& completionList, const std::string& completionBegin)
      {};
      virtual CompletorPlugin* clone() const;
  };

}
#endif /* _SHELL_COMPLETION_PLUGIN_H */