- Fix error popup showing multiple times (#1987)

- Improve/generalize error handling

cw_core/lib/exceptions.dart

@@ -56,3 +56,13 @@ class CreateAssociatedTokenAccountException implements Exception {
 class SignSPLTokenTransactionRentException implements Exception {}
 
 class NoAssociatedTokenAccountException implements Exception {}
+
+
+/// ==============================================================================
+/// ==============================================================================
+
+class RestoreFromSeedException implements Exception {
+  final String message;
+
+  RestoreFromSeedException(this.message);
+}

cw_zano/lib/zano_wallet_exceptions.dart

@@ -1,3 +1,5 @@
+import 'package:cw_core/exceptions.dart';
+
 class ZanoWalletException implements Exception {
   final String message;
 
@@ -6,7 +8,7 @@ class ZanoWalletException implements Exception {
   String toString() => '${this.runtimeType} (message: $message)';
 }
 
-class RestoreFromSeedsException extends ZanoWalletException {
+class RestoreFromSeedsException extends RestoreFromSeedException {
   RestoreFromSeedsException(String message) : super(message);
 }
 

lib/src/screens/restore/wallet_restore_page.dart

@@ -23,7 +23,51 @@ import 'package:mobx/mobx.dart';
 import 'package:smooth_page_indicator/smooth_page_indicator.dart';
 
 class WalletRestorePage extends BasePage {
-  WalletRestorePage(this.walletRestoreViewModel, this.seedSettingsViewModel)
+  WalletRestorePage(this.walletRestoreViewModel, this.seedSettingsViewModel);
+
+  @override
+  Widget middle(BuildContext context) => Observer(
+      builder: (_) => Text(
+            walletRestoreViewModel.mode == WalletRestoreMode.seed
+                ? S.current.restore_title_from_seed
+                : S.current.restore_title_from_keys,
+            style: TextStyle(
+                fontSize: 18.0,
+                fontWeight: FontWeight.bold,
+                fontFamily: 'Lato',
+                color: titleColor(context)),
+          ));
+
+  final WalletRestoreViewModel walletRestoreViewModel;
+  final SeedSettingsViewModel seedSettingsViewModel;
+
+  @override
+  Function(BuildContext)? get pushToNextWidget => (context) {
+        FocusScopeNode currentFocus = FocusScope.of(context);
+        if (!currentFocus.hasPrimaryFocus) {
+          currentFocus.focusedChild?.unfocus();
+        }
+      };
+
+  @override
+  Widget body(BuildContext context) {
+    return WalletRestorePageBody(walletRestoreViewModel, seedSettingsViewModel);
+  }
+}
+
+class WalletRestorePageBody extends StatefulWidget {
+  WalletRestorePageBody(this.walletRestoreViewModel, this.seedSettingsViewModel);
+
+  final WalletRestoreViewModel walletRestoreViewModel;
+  final SeedSettingsViewModel seedSettingsViewModel;
+
+  @override
+  State<WalletRestorePageBody> createState() =>
+      _WalletRestorePageBodyState(walletRestoreViewModel, seedSettingsViewModel);
+}
+
+class _WalletRestorePageBodyState extends State<WalletRestorePageBody> {
+  _WalletRestorePageBodyState(this.walletRestoreViewModel, this.seedSettingsViewModel)
       : walletRestoreFromSeedFormKey = GlobalKey<WalletRestoreFromSeedFormState>(),
         walletRestoreFromKeysFormKey = GlobalKey<WalletRestoreFromKeysFromState>(),
         _pages = [],
@@ -54,8 +98,10 @@ class WalletRestorePage extends BasePage {
                 _validateOnChange(isPolyseed: isPolyseed);
               },
               displayWalletPassword: walletRestoreViewModel.hasWalletPassword,
-              onPasswordChange: (String password) => walletRestoreViewModel.walletPassword = password,
-              onRepeatedPasswordChange: (String repeatedPassword) => walletRestoreViewModel.repeatedWalletPassword = repeatedPassword));
+              onPasswordChange: (String password) =>
+                  walletRestoreViewModel.walletPassword = password,
+              onRepeatedPasswordChange: (String repeatedPassword) =>
+                  walletRestoreViewModel.repeatedWalletPassword = repeatedPassword));
           break;
         case WalletRestoreMode.keys:
           _pages.add(WalletRestoreFromKeysFrom(
@@ -69,8 +115,10 @@ class WalletRestorePage extends BasePage {
               },
               displayPrivateKeyField: walletRestoreViewModel.hasRestoreFromPrivateKey,
               displayWalletPassword: walletRestoreViewModel.hasWalletPassword,
-              onPasswordChange: (String password) => walletRestoreViewModel.walletPassword = password,
-              onRepeatedPasswordChange: (String repeatedPassword) => walletRestoreViewModel.repeatedWalletPassword = repeatedPassword,
+              onPasswordChange: (String password) =>
+                  walletRestoreViewModel.walletPassword = password,
+              onRepeatedPasswordChange: (String repeatedPassword) =>
+                  walletRestoreViewModel.repeatedWalletPassword = repeatedPassword,
               onHeightOrDateEntered: (value) => walletRestoreViewModel.isButtonEnabled = value));
           break;
         default:
@@ -79,21 +127,6 @@ class WalletRestorePage extends BasePage {
     });
   }
 
-  bool _formProcessing = false;
-
-  @override
-  Widget middle(BuildContext context) => Observer(
-      builder: (_) => Text(
-            walletRestoreViewModel.mode == WalletRestoreMode.seed
-                ? S.current.restore_title_from_seed
-                : S.current.restore_title_from_keys,
-            style: TextStyle(
-                fontSize: 18.0,
-                fontWeight: FontWeight.bold,
-                fontFamily: 'Lato',
-                color: titleColor(context)),
-          ));
-
   final WalletRestoreViewModel walletRestoreViewModel;
   final SeedSettingsViewModel seedSettingsViewModel;
   final PageController _controller;
@@ -102,20 +135,16 @@ class WalletRestorePage extends BasePage {
   final GlobalKey<WalletRestoreFromKeysFromState> walletRestoreFromKeysFormKey;
   final FocusNode _blockHeightFocusNode;
 
+  bool _formProcessing = false;
+
   // DerivationType derivationType = DerivationType.unknown;
   // String? derivationPath = null;
   DerivationInfo? derivationInfo;
 
   @override
-  Function(BuildContext)? get pushToNextWidget => (context) {
-        FocusScopeNode currentFocus = FocusScope.of(context);
-        if (!currentFocus.hasPrimaryFocus) {
-          currentFocus.focusedChild?.unfocus();
-        }
-      };
+  void initState() {
+    super.initState();
 
-  @override
-  Widget body(BuildContext context) {
     reaction((_) => walletRestoreViewModel.state, (ExecutionState state) {
       if (state is FailureState) {
         WidgetsBinding.instance.addPostFrameCallback((_) {
@@ -149,7 +178,10 @@ class WalletRestorePage extends BasePage {
           .currentState!.blockchainHeightKey.currentState!.dateController.text = '';
       walletRestoreFromKeysFormKey.currentState!.nameTextEditingController.text = '';
     });
+  }
 
+  @override
+  Widget build(BuildContext context) {
     return KeyboardActions(
       config: KeyboardActionsConfig(
         keyboardActionsPlatform: KeyboardActionsPlatform.IOS,

lib/view_model/wallet_creation_vm.dart

@@ -10,6 +10,7 @@ import 'package:cake_wallet/store/app_store.dart';
 import 'package:cake_wallet/store/settings_store.dart';
 import 'package:cake_wallet/view_model/restore/restore_wallet.dart';
 import 'package:cake_wallet/view_model/seed_settings_view_model.dart';
+import 'package:cw_core/exceptions.dart';
 import 'package:cw_core/pathForWallet.dart';
 import 'package:cw_core/utils/print_verbose.dart';
 import 'package:cw_core/wallet_base.dart';
@@ -118,7 +119,11 @@ abstract class WalletCreationVMBase with Store {
     } catch (e, s) {
       printV("error: $e");
       printV("stack: $s");
-      state = FailureState(e.toString());
+      String message = e.toString();
+      if (e is RestoreFromSeedException) {
+        message = e.message;
+      }
+      state = FailureState(message);
     }
   }