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// -*- mode: c++; c-basic-offset: 2; -*-

#ifndef PROTOCOLS_HH
#define PROTOCOLS_HH

#include <memory>
#include <ostream>
#include <stddef.h>

class AttributedText;
class Looper;

class Protocols {
public:
  class Listener {
  public:
    virtual ~Listener() {}

    virtual void text(Protocols* protocols,
                      size_t id, std::string const& protocol,
                      std::unique_ptr<AttributedText>&& text) = 0;
    virtual void content(Protocols* protocols, size_t id,
                         std::string const& protocol, std::ostream* out) = 0;

  protected:
    Listener() {}
  };

  virtual ~Protocols() {}

  static Protocols* create(size_t workers, size_t buffer, size_t cache,
                           Looper* looper, Listener* listener);

  virtual void clear() = 0;

  virtual void add(size_t id, void const* data, size_t size) = 0;
  virtual void update(size_t id, void const* data, size_t size) = 0;
  virtual void remove(size_t id) = 0;

  virtual void text(size_t id) = 0;
  virtual void free(size_t id, std::unique_ptr<AttributedText>&& text) = 0;

  virtual void content(size_t id, std::ostream* out) = 0;

protected:
  Protocols() {}
  Protocols(Protocols const&) = delete;
  Protocols& operator=(Protocols const&) = delete;
};

#endif  // PROTOCOLS_HH