flipScrollDirection function Null safety
- ScrollDirection direction
Returns the opposite of the given ScrollDirection.
Specifically, returns ScrollDirection.reverse for ScrollDirection.forward (and vice versa) and returns ScrollDirection.idle for ScrollDirection.idle.
Implementation
ScrollDirection flipScrollDirection(ScrollDirection direction) {
switch (direction) {
case ScrollDirection.idle:
return ScrollDirection.idle;
case ScrollDirection.forward:
return ScrollDirection.reverse;
case ScrollDirection.reverse:
return ScrollDirection.forward;
}
}