focusLeft method

void focusLeft()

Implementation

void focusLeft() {
  if (indexWithFocus == Index(-1, -1)) return;
  if (indexWithFocus.column != 0)
    indexWithFocus = Index(indexWithFocus.row, indexWithFocus.column - 1);
  cellSelection.clear();
  cellSelection.add(indexWithFocus);
  rowSelection.clear();
  rowSelection.add(indexWithFocus.row);
  columnSelection.clear();
  columnSelection.add(indexWithFocus.column);
  selectionChanged?.call();
}