compareTo method Null safety

  1. @override
int compareTo (
  1. LibraryContainer other
)
override

Compares this object to another Comparable

Returns a value like a Comparator when comparing this to other. That is, it returns a negative integer if this is ordered before other, a positive integer if this is ordered after other, and zero if this and other are ordered together.

The other argument must be a value that is comparable to this object.

Implementation

@override
int compareTo(LibraryContainer other) {
  if (_group == other._group) {
    if (_group == -1) {
      return Comparable.compare(containerOrder.indexOf(sortKey),
          containerOrder.indexOf(other.sortKey));
    } else {
      return sortKey.toLowerCase().compareTo(other.sortKey.toLowerCase());
    }
  }
  return Comparable.compare(_group, other._group);
}