exam_timer_teacher/widgets/examsmodel.cpp

#include "examsmodel.h"

#include "qjsonarray.h"
#include "qjsonobject.h"

ExamsTableModel::ExamsTableModel(QObject *parent)
    : QAbstractTableModel(parent)
{}

void ExamsTableModel::loadJsonData(const QJsonArray &jsonArray)
{
    QList<Exams> studentList;

    for (const QJsonValue &value : jsonArray) {
        if (value.isObject()) {
            QJsonObject obj = value.toObject();
            Exams exams;
            exams.id = obj.value("id").toInt();
            exams.name = obj.value("name").toString();
            exams.fileDir = obj.value("fileDir").toString();
            exams.select = (obj.value("isSelect").toInt() != 0);

            studentList.append(exams);
        }
    }
    beginResetModel();
    examsList = studentList;
    endResetModel();
}

int ExamsTableModel::rowCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent);
    return examsList.size();
}

int ExamsTableModel::columnCount(const QModelIndex &parent) const
{
    Q_UNUSED(parent);
    return 3;
}

QVariant ExamsTableModel::data(const QModelIndex &index, int role) const
{
    if (!index.isValid())
        return QVariant();

    if (index.row() >= examsList.size() || index.row() < 0)
        return QVariant();

    if (role == Qt::DisplayRole) {
        const auto &exams = examsList.at(index.row());
        if (index.column() == 0)
            return exams.name;
        else if (index.column() == 1)
            return exams.fileDir;
        else if (index.column() == 2)
            return exams.select;
    }
    return QVariant();
}

QVariant ExamsTableModel::headerData(int section, Qt::Orientation orientation, int role) const
{
    if (role != Qt::DisplayRole)
        return QVariant();

    if (orientation == Qt::Horizontal) {
        switch (section) {
        case 0:
            return tr("name");
        case 1:
            return tr("fileDir");
        case 2:
            return tr("select");
        default:
            return QVariant();
        }
    }
    return QVariant();
}