Method isColumnSortable

src/eepp/ui/models/sortingproxymodel.cpp:213–215

}

bool SortingProxyModel::isColumnSortable( const size_t& columnIndex ) const {
	return source().isColumnSortable( columnIndex );
}

bool SortingProxyModel::lessThan( const ModelIndex& index1, const ModelIndex& index2 ) const {
	auto data1 = mSource->data( index1, mSortRole );