insertColumn method
Insert column in sheet
at position columnIndex
Implementation
@override
void insertColumn(String sheet, int columnIndex) {
super.insertColumn(sheet, columnIndex);
var rows = _findRows(_sheets[sheet]!).toList();
for (var row in rows) {
var cell = _findCellByIndex(row, columnIndex);
if (cell != null) {
row.children.insert(row.children.indexOf(cell), _createCell(null));
} else {
row.children.add(_createCell(null));
}
}
}