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/* 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 2, 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#include "PYPSuggestionCandidates.h"
#include <assert.h>
#include <pinyin.h>
#include "PYPSuggestionEditor.h"

using namespace PY;

gboolean
SuggestionCandidates::processCandidates (std::vector<EnhancedCandidate> & candidates)
{
    pinyin_instance_t *instance = m_editor->m_instance;

    guint len = 0;
    pinyin_get_n_candidate (instance, &len);

    for (guint i = 0; i < len; i++) {
        lookup_candidate_t * candidate = NULL;
        pinyin_get_candidate (instance, i, &candidate);

        lookup_candidate_type_t type;
        pinyin_get_candidate_type (instance, candidate, &type);
        assert (PREDICTED_CANDIDATE == type);

        const gchar * phrase_string = NULL;
        pinyin_get_candidate_string (instance, candidate, &phrase_string);

        EnhancedCandidate enhanced;
        enhanced.m_candidate_type = CANDIDATE_SUGGESTION;
        enhanced.m_candidate_id = i;
        enhanced.m_display_string = phrase_string;

        candidates.push_back (enhanced);
    }

    return TRUE;
}

SelectCandidateAction
SuggestionCandidates::selectCandidate (EnhancedCandidate & enhanced)
{
    pinyin_instance_t * instance = m_editor->m_instance;
    assert (CANDIDATE_SUGGESTION == enhanced.m_candidate_type);

    guint len = 0;
    pinyin_get_n_candidate (instance, &len);

    if (G_UNLIKELY (enhanced.m_candidate_id >= len))
        return SELECT_CANDIDATE_ALREADY_HANDLED;

    lookup_candidate_t * candidate = NULL;
    pinyin_get_candidate (instance, enhanced.m_candidate_id, &candidate);
    pinyin_choose_predicted_candidate (instance, candidate);

    return SELECT_CANDIDATE_COMMIT;
}