General changes. CAKE-1.

lib/view_model/node_list/node_create_or_edit_view_model.dart

@@ -0,0 +1,71 @@
+import 'package:hive/hive.dart';
+import 'package:mobx/mobx.dart';
+import 'package:cake_wallet/core/wallet_base.dart';
+import 'package:cake_wallet/src/domain/common/node.dart';
+import 'package:cake_wallet/src/domain/common/wallet_type.dart';
+import 'package:cake_wallet/view_model/node_list/node_create_or_edit_view_model_state.dart';
+
+part 'node_create_or_edit_view_model.g.dart';
+
+class NodeCreateOrEditViewModel = NodeCreateOrEditViewModelBase
+    with _$NodeCreateOrEditViewModel;
+
+abstract class NodeCreateOrEditViewModelBase with Store {
+  NodeCreateOrEditViewModelBase(this._nodeSource, this._wallet)
+      : state = InitialNodeCreateOrEditViewModelState();
+
+  @observable
+  NodeCreateOrEditViewModelState state;
+
+  @observable
+  String address;
+
+  @observable
+  String port;
+
+  @observable
+  String login;
+
+  @observable
+  String password;
+
+  @computed
+  bool get isReady =>
+      (address?.isNotEmpty ?? false) && (port?.isNotEmpty ?? false);
+
+  bool get hasAuthCredentials => _wallet.type == WalletType.monero;
+
+  String get uri {
+    var uri = address;
+
+    if (port != null && port.isNotEmpty) {
+      uri += ':' + port;
+    }
+
+    return uri;
+  }
+
+  final WalletBase _wallet;
+  final Box<Node> _nodeSource;
+
+  @action
+  void reset() {
+    address = '';
+    port = '';
+    login = '';
+    password = '';
+  }
+
+  @action
+  Future<void> save() async {
+    try {
+      state = NodeIsCreating();
+      final node =
+          Node(uri: uri, type: _wallet.type, login: login, password: password);
+      await _nodeSource.add(node);
+      state = NodeCreatedSuccessfully();
+    } catch (e) {
+      state = NodeCreateOrEditViewModelFailure(e.toString());
+    }
+  }
+}

lib/view_model/node_list/node_create_or_edit_view_model_state.dart

@@ -0,0 +1,14 @@
+abstract class NodeCreateOrEditViewModelState {}
+
+class InitialNodeCreateOrEditViewModelState
+    extends NodeCreateOrEditViewModelState {}
+
+class NodeIsCreating extends NodeCreateOrEditViewModelState {}
+
+class NodeCreatedSuccessfully extends NodeCreateOrEditViewModelState {}
+
+class NodeCreateOrEditViewModelFailure extends NodeCreateOrEditViewModelState {
+  NodeCreateOrEditViewModelFailure(this.error);
+
+  final String error;
+}

lib/view_model/node_list/node_list_view_model.dart

@@ -0,0 +1,26 @@
+import 'package:hive/hive.dart';
+import 'package:mobx/mobx.dart';
+import 'package:cake_wallet/core/wallet_base.dart';
+import 'package:cake_wallet/src/domain/common/node.dart';
+import 'package:cake_wallet/src/domain/common/node_list.dart';
+import 'package:cake_wallet/store/node_list_store.dart';
+
+part 'node_list_view_model.g.dart';
+
+class NodeListViewModel = NodeListViewModelBase with _$NodeListViewModel;
+
+abstract class NodeListViewModelBase with Store {
+  NodeListViewModelBase(this._nodeListStore, this._nodeSource, this._wallet);
+
+  @computed
+  ObservableList<Node> get nodes => ObservableList<Node>.of(
+      _nodeListStore.nodes.where((node) => node.type == _wallet.type));
+
+  final WalletBase _wallet;
+  final Box<Node> _nodeSource;
+  final NodeListStore _nodeListStore;
+
+  Future<void> reset() async => await resetToDefault(_nodeSource);
+
+  Future<void> delete(Node node) async => node.delete();
+}