Cell constructor
Cell(
- dynamic position, [
- int? _value = 0
Constructs new Cell at position
with optional _value
If value is provided, then cell is flagged as prefilled
Implementation
Cell(position, [this._value = 0]) : super(position, true) {
_isPrefill = (_value != 0);
_isValid = _isPrefill;
_onChange = new StreamController.broadcast();
}