selectCell method

void selectCell(int row, int col, { bool additive = false, bool range = false, })

Select the cell at (row, col). additive toggles it (multi), range extends a rectangle from the anchor. Also moves the editing cursor.

Implementation

void selectCell(int row, int col, {bool additive = false, bool range = false}) {
  if (!selectionIsCellMode || row < 0 || row >= rowCount || col < 0 || col >= colCount) return;
  _sel = CellRef(row, col);
  if (selectionMode == EditableSelectionMode.singleCell) {
    _selCells
      ..clear()
      ..add(CellRef(row, col));
    _anchorRow = row;
    _anchorCol = col;
  } else if (range) {
    final r0 = row < _anchorRow ? row : _anchorRow;
    final r1 = row < _anchorRow ? _anchorRow : row;
    final c0 = col < _anchorCol ? col : _anchorCol;
    final c1 = col < _anchorCol ? _anchorCol : col;
    if (!additive) _selCells.clear();
    for (var r = r0; r <= r1; r++) {
      for (var c = c0; c <= c1; c++) {
        _selCells.add(CellRef(r, c));
      }
    }
  } else if (additive) {
    final cell = CellRef(row, col);
    _selCells.contains(cell) ? _selCells.remove(cell) : _selCells.add(cell);
    _anchorRow = row;
    _anchorCol = col;
  } else {
    _selCells
      ..clear()
      ..add(CellRef(row, col));
    _anchorRow = row;
    _anchorCol = col;
  }
  notifyListeners();
}