// Copyright 2010-2012, Google Inc.
// Copyright 2012~2013, Weng Xuetian <wengxt@gmail.com>
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
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#ifndef MOZC_UNIX_FCITX_MOZC_RESPONSE_PARSER_H_
#define MOZC_UNIX_FCITX_MOZC_RESPONSE_PARSER_H_

#include <cstdint>

#include "protocol/candidate_window.pb.h"
#include "protocol/commands.pb.h"

namespace fcitx {

class InputContext;
class MozcEngine;

// This class parses IPC response from mozc_server (mozc::commands::Output) and
// updates the FCITX UI.
class MozcResponseParser {
 public:
  MozcResponseParser(MozcEngine* engine);
  MozcResponseParser(const MozcResponseParser&) = delete;
  ~MozcResponseParser();

  // Parses a response from Mozc server and sets persed information on
  // fcitx_mozc
  // object. Returns true if response.consumed() is true. fcitx_mozc must be non
  // NULL. This function does not take ownership of fcitx_mozc.
  bool ParseResponse(const mozc::commands::Output& response,
                     InputContext* ic) const;

 private:
  void UpdateDeletionRange(const mozc::commands::Output& response,
                           InputContext* ic) const;
  void LaunchTool(const mozc::commands::Output& response,
                  InputContext* ic) const;
  void ExecuteCallback(const mozc::commands::Output& response,
                       InputContext* ic) const;
  void ParseResult(const mozc::commands::Result& result,
                   InputContext* ic) const;
  void ParseCandidates(const mozc::commands::CandidateWindow& candidates,
                       InputContext* ic) const;
  void ParsePreedit(const mozc::commands::Preedit& preedit, uint32_t position,
                    InputContext* ic) const;

  MozcEngine* engine_;
};

}  // namespace fcitx

#endif  // MOZC_UNIX_FCITX_MOZC_RESPONSE_PARSER_H_
