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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QAbstractTableModel>
#include <QSet>
#include <QDebug>
typedef QPair<QString, bool> CellData;
class TestTableModel : public QAbstractTableModel
{
Q_OBJECT
Q_PROPERTY(int rowCount READ rowCount WRITE setRowCount NOTIFY rowCountChanged)
Q_PROPERTY(int columnCount READ columnCount WRITE setColumnCount NOTIFY columnCountChanged)
public:
TestTableModel(QObject *parent = nullptr) : QAbstractTableModel(parent) { }
int rowCount(const QModelIndex & = QModelIndex()) const override { return m_rows; }
void setRowCount(int count) {
beginResetModel();
m_rows = count;
rebuildModel();
emit rowCountChanged();
endResetModel();
}
int columnCount(const QModelIndex & = QModelIndex()) const override { return m_cols; }
void setColumnCount(int count) {
beginResetModel();
m_cols = count;
rebuildModel();
emit columnCountChanged();
endResetModel();
}
int indexValue(const QModelIndex &index) const
{
return index.row() + (index.column() * rowCount());
}
void rebuildModel()
{
m_modelData = QVector<QVector<CellData>>(m_cols);
for (int x = 0; x < m_cols; ++x) {
m_modelData[x] = QVector<CellData>(m_rows);
for (int y = 0; y < m_rows; ++y)
m_modelData[x][y] = qMakePair(QString("%1, %2").arg(x).arg(y), false);
}
}
QVariant data(const QModelIndex &index, int role) const override
{
if (!index.isValid())
return QVariant();
switch (role) {
case Qt::DisplayRole:
return m_modelData[index.column()][index.row()].first;
case Qt::CheckStateRole:
return m_modelData[index.column()][index.row()].second;
default:
return QVariant();
}
return QVariant();
}
bool setData(const QModelIndex &index, const QVariant &value,
int role = Qt::EditRole) override
{
switch (role) {
case Qt::DisplayRole: {
QString text = value.toString();
auto &cellData = m_modelData[index.column()][index.row()];
if (text == cellData.first)
return false;
cellData.first = text;
break; }
case Qt::CheckStateRole: {
bool checked = value.toBool();
auto &cellData = m_modelData[index.column()][index.row()];
if (checked == cellData.second)
return false;
cellData.second = checked;
break; }
default:
return QAbstractTableModel::setData(index, value, role);
}
emit dataChanged(index, index, {role});
return true;
}
QHash<int, QByteArray> roleNames() const override
{
return {
{Qt::DisplayRole, "display"},
{Qt::CheckStateRole, "checked"}
};
}
Q_INVOKABLE void insertRows(int row, int count)
{
insertRows(row, count, QModelIndex());
}
Q_INVOKABLE void removeRows(int row, int count)
{
removeRows(row, count, QModelIndex());
}
Q_INVOKABLE void insertColumns(int column, int count)
{
insertColumns(column, count, QModelIndex());
}
Q_INVOKABLE void removeColumns(int column, int count)
{
removeColumns(column, count, QModelIndex());
}
bool insertRows(int row, int count, const QModelIndex &) override
{
if (row > m_rows)
return false;
beginInsertRows(QModelIndex(), row, row + count - 1);
m_rows += count;
for (int y = 0; y < count; ++y) {
for (int x = 0; x < m_cols; ++x)
m_modelData[x].insert(row, qMakePair(QStringLiteral("added"), false));
}
endInsertRows();
return true;
}
bool removeRows(int row, int count, const QModelIndex &) override
{
if (row + count > m_rows)
count = m_rows - row;
if (count < 1)
return false;
beginRemoveRows(QModelIndex(), row, row + count - 1);
m_rows -= count;
for (int y = 0; y < count; ++y) {
for (int x = 0; x < m_cols; ++x)
m_modelData[x].remove(row);
}
endRemoveRows();
return true;
}
bool insertColumns(int column, int count, const QModelIndex &) override
{
if (column > m_cols)
return false;
beginInsertColumns(QModelIndex(), column, column + count - 1);
m_cols += count;
for (int x = 0; x < count; ++x) {
const int c = column + x;
m_modelData.insert(c, QVector<CellData>(m_rows));
for (int y = 0; y < m_rows; ++y)
m_modelData[c][y] = qMakePair(QStringLiteral("added"), false);
}
endInsertColumns();
return true;
}
bool removeColumns(int column, int count, const QModelIndex &) override
{
if (column + count > m_cols)
count = m_cols - column;
if (count < 1)
return false;
beginRemoveColumns(QModelIndex(), column, column + count - 1);
m_cols -= count;
for (int x = 0; x < count; ++x)
m_modelData.remove(column + x);
endRemoveColumns();
return true;
}
Qt::ItemFlags flags(const QModelIndex &index) const override
{
Q_UNUSED(index)
return Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsEditable;
}
signals:
void rowCountChanged();
void columnCountChanged();
private:
int m_rows = 0;
int m_cols = 0;
QVector<QVector<CellData>> m_modelData;
};
int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);
qmlRegisterType<TestTableModel>("TestTableModel", 0, 1, "TestTableModel");
QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
return app.exec();
}
#include "main.moc"
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