Method takeUpdatedData

YACReaderLibrary/db/comic_model.cpp:846–921

}

void ComicModel::takeUpdatedData(const QList<ComicItem *> &updatedData, std::function<bool(ComicItem *, ComicItem *)> comparator)
{
    int length = _data.size();
    int lengthUpdated = updatedData.size();

    int i; // index of the internal data
    int j; // index of the updated children
    for (i = 0, j = 0; i < length && j < lengthUpdated;) {
        auto comic = _data.at(i);
        auto updatedComic = updatedData.at(j);

        auto sameComic = comic->data(ComicModel::Id) == updatedComic->data(ComicModel::Id);
        if (sameComic) {
            if (comic->getData() != updatedComic->getData()) {
                auto modelIndexToUpdate = index(i, 0, QModelIndex());

                comic->setData(updatedComic->getData());

                emit dataChanged(modelIndexToUpdate, modelIndexToUpdate);
            }

            i++;
            j++;
            continue;
        }

        auto lessThan = comparator(comic, updatedComic);

        // comic added
        if (!lessThan) {
            beginInsertRows(QModelIndex(), i, i);

            _data.insert(i, updatedComic);

            endInsertRows();

            i++;
            j++;
            length++;
            continue;
        }

        // comic removed
        if (lessThan) {
            beginRemoveRows(QModelIndex(), i, i);

            _data.removeAt(i);

            endRemoveRows();

            length--;
            continue;
        }
    }

    // add remaining comics
    for (; j < lengthUpdated; j++) {
        beginInsertRows(QModelIndex(), i, i);