onChange property

(void Function(Map<String, SearchControllerState>, Map<String, SearchControllerState>)?) onChange
final

Callback function, is a callback function called when the search state changes and accepts the previous and next search state as arguments. For example,

StateProvider(
  ...
  onChange: (nextState, prevState) {
        // do something here
    },
  ...
)

Implementation

final void Function(Map<String, SearchControllerState>,
    Map<String, SearchControllerState>)? onChange;