/* vim:set et ts=4 sts=4:
 *
 * ibus-libpinyin - Intelligent Pinyin engine based on libpinyin for IBus
 *
 * Copyright (c) 2018 Peng Wu <alexepico@gmail.com>
 *
 *  This program 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, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __PY_LIB_PINYIN_ENHANCED_CANDIDATES_H_
#define __PY_LIB_PINYIN_ENHANCED_CANDIDATES_H_

#include <glib.h>
#include <string>
#include <vector>

namespace PY {

enum CandidateType {
    CANDIDATE_NBEST_MATCH = 1,
    CANDIDATE_LONGER,
    CANDIDATE_LONGER_USER,
    /* not included with user candidate */
    CANDIDATE_NORMAL,
    /* both normal candidate and user candidate */
    CANDIDATE_USER,
    CANDIDATE_PREDICTED_BIGRAM,
    CANDIDATE_PREDICTED_PREFIX,
    CANDIDATE_TRADITIONAL_CHINESE,
    CANDIDATE_LUA_TRIGGER,
    CANDIDATE_LUA_CONVERTER,
    CANDIDATE_CLOUD_INPUT,
    CANDIDATE_EMOJI,
    CANDIDATE_ENGLISH
};

enum SelectCandidateAction {
    SELECT_CANDIDATE_ALREADY_HANDLED = 0x0,
    /* commit the text without change. */
    SELECT_CANDIDATE_COMMIT = 0x1,
    /* modify the current candidate in place */
    SELECT_CANDIDATE_MODIFY_IN_PLACE = 0x2,
    /* need to call update method in class Editor. */
    SELECT_CANDIDATE_UPDATE = 0x4,
    /* commit the text without append the rest input after the pinyin */
    SELECT_CANDIDATE_DIRECT_COMMIT = 0x8
};

struct EnhancedCandidate {
    CandidateType m_candidate_type;
    guint m_candidate_id;
    std::string m_display_string;
};

template <class IEditor>
class EnhancedCandidates {

public:
    gboolean processCandidates (std::vector<EnhancedCandidate> & candidates);

    int selectCandidate (EnhancedCandidate & enhanced);
    gboolean removeCandidate (EnhancedCandidate & enhanced);

protected:

    /* will call selectCandidateInternal method of class IEditor. */
    IEditor *m_editor;
};

};

#endif
