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#ifndef MOZC_SESSION_OUTPUT_UTIL_H_
#define MOZC_SESSION_OUTPUT_UTIL_H_

#include "base/port.h"

namespace mozc {
namespace commands {
class Output;
}  // namespace commands

// This class consists of utility functions for mozc::commands::Output.
// TODO(yukawa): Consider to move this class under client/*.
class OutputUtil {
 public:
  // Converts a candidate id into candidate index.
  // Returns true if a valid candidate index is returned in |candidate_index|.
  static bool GetCandidateIndexById(const mozc::commands::Output &output,
                                    int32 mozc_candidate_id,
                                    int32 *candidate_index);

  // Converts a candidate index into candidate id.
  // Returns true if a valid candidate id is returned in |candidate_id|.
  static bool GetCandidateIdByIndex(const mozc::commands::Output &output,
                                    int32 candidate_index,
                                    int32 *mozc_candidate_id);

  // Converts a candidate id into candidate index.
  // Returns true if a valid candidate index is returned in |candidate_index|.
  static bool GetFocusedCandidateId(const mozc::commands::Output &output,
                                    int32 *mozc_candidate_id);

 private:
  DISALLOW_IMPLICIT_CONSTRUCTORS(OutputUtil);
};

}  // namespace mozc
#endif  // MOZC_SESSION_OUTPUT_UTIL_H_