previous method
override
Fetches the previous messages page.
Implementation
@override
Future<void> previous() async {
Log.debug('previous()', '$runtimeType($id)');
if (!status.value.isLoading) {
status.value = RxStatus.loadingMore();
}
await _pagination?.previous();
status.value = RxStatus.success();
Future.delayed(Duration.zero, updateReads);
}