stack_wallet/lib/wallets/isar/providers/favourite_wallets_provider.dart

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import 'dart:async';
import 'package:flutter/foundation.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:isar/isar.dart';
import 'package:stackwallet/providers/db/main_db_provider.dart';
import 'package:stackwallet/wallets/isar/models/wallet_info.dart';
class _Watcher extends ChangeNotifier {
late final StreamSubscription<List<WalletInfo>> _streamSubscription;
List<WalletInfo> _value;
List<WalletInfo> get value => _value;
_Watcher(this._value, Isar isar) {
_streamSubscription = isar.walletInfo
.filter()
.isFavouriteEqualTo(true)
.watch()
.listen((event) {
_value = event;
notifyListeners();
});
}
@override
void dispose() {
_streamSubscription.cancel();
super.dispose();
}
}
final _wiProvider = ChangeNotifierProvider.autoDispose(
(ref) {
final isar = ref.watch(mainDBProvider).isar;
final watcher = _Watcher(
isar.walletInfo
.filter()
.isFavouriteEqualTo(true)
.sortByFavouriteOrderIndex()
.findAllSync(),
isar,
);
ref.onDispose(() => watcher.dispose());
return watcher;
},
);
final pFavouriteWalletInfos = Provider.autoDispose(
(ref) {
return ref.watch(_wiProvider).value;
},
);