Fix: search filter issue after its being empty

Ref:-#49

lib/src/filter_list_widget.dart

@@ -187,10 +187,28 @@ class FilterListWidget<T extends Object> extends StatelessWidget {
  hideCloseIcon: hideCloseIcon,
  headerCloseIcon: headerCloseIcon,
  onSearch: (String value) {
+ final stateList = FilterState.of<T>(context).items;
+
+ // Reset filter list if search box is empty
  if (value.isEmpty) {
  FilterState.of<T>(context).items = listData;
  return;
  }
+ // Reassign items to filter list when it is empty but local list has data
+ else if (stateList != null &&
+ stateList.isEmpty &&
+ listData != null &&
+ listData!.isNotEmpty) {
+ final isFoundInLocalState =
+ listData!.any((item) => onItemSearch(item, value));
+
+ if (isFoundInLocalState) {
+ FilterState.of<T>(context).items = listData!
+ .where((item) => onItemSearch(item, value))
+ .toList();
+ return;
+ }
+ }
  FilterState.of<T>(context)
  .filter((item) => onItemSearch(item, value));
  },