protected override bool DoExecute()
{
_oldCell = Canvas.CurrentCell.Clone();
Canvas.Plot();
_newCell = Canvas.CurrentCell.Clone();
return(_oldCell ! != _newCell !);
}
private bool Replot(Cell?from, Cell?to)
{
if (to is null || to == from !)
{
return(false);
}
Canvas.Plot(to);
return(true);
}