Method clear

src/backend/datasources/AbstractDataSource.cpp:26–36

}

void AbstractDataSource::clear() {
	const auto& columns = children<Column>();
	for (auto* column : columns) {
		column->setUndoAware(false);
		column->setSuppressDataChangedSignal(true);
		column->clear();
		column->setUndoAware(true);
		column->setSuppressDataChangedSignal(false);
		column->setChanged();
	}
}