refactor: move localization to constants

- localization no longer depends on the current context as we use the global context
- remove util/localization.dart file to consolidate into constants file.

lib/constants.dart

@@ -4,6 +4,17 @@ import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:my_wit_wallet/screens/create_wallet/bloc/create_wallet_bloc.dart';
 import 'package:my_wit_wallet/util/storage/database/wallet.dart';
+import 'package:my_wit_wallet/globals.dart' as globals;
+
+typedef String LocalizationCallback(String value);
+
+AppLocalizations localization =
+    AppLocalizations.of(globals.navigatorKey.currentContext!)!;
+
+Map<WalletType, String> walletTypeToLabel(BuildContext context) => {
+      WalletType.hd: AppLocalizations.of(context)!.walletTypeHDLabel,
+      WalletType.single: AppLocalizations.of(context)!.walletTypeNodeLabel,
+    };
 
 /// Explorer Settings
 const bool USE_EXPLORER_DEV = false;
@@ -65,6 +76,7 @@ Map<ImportOrigin, CreateWalletType> importOriginToXprvType = {
   ImportOrigin.fromSheikah: CreateWalletType.encryptedXprv,
   ImportOrigin.fromNode: CreateWalletType.xprv
 };
+
 Map<CreateWalletType, WalletType> xprvTypeToWalletType = {
   CreateWalletType.encryptedXprv: WalletType.hd,
   CreateWalletType.xprv: WalletType.single

lib/screens/create_wallet/build_wallet_card.dart

@@ -1,11 +1,11 @@
 import 'dart:async';
 import 'dart:math';
 
-import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_spinkit/flutter_spinkit.dart';
 import 'package:my_wit_wallet/bloc/crypto/crypto_bloc.dart';
+import 'package:my_wit_wallet/constants.dart';
 import 'package:my_wit_wallet/screens/create_wallet/bloc/api_create_wallet.dart';
 import 'package:my_wit_wallet/screens/create_wallet/bloc/create_wallet_bloc.dart';
 import 'package:my_wit_wallet/screens/create_wallet/nav_action.dart';
@@ -47,7 +47,6 @@ class BuildWalletCardState extends State<BuildWalletCard>
   int currentAddressCount = 0;
   int currentTransactionCount = 0;
   static const headerAniInterval = Interval(.1, .3, curve: Curves.easeOut);
-  AppLocalizations get _localization => AppLocalizations.of(context)!;
 
   void prevAction() {
     CreateWalletType type =
@@ -64,14 +63,14 @@ class BuildWalletCardState extends State<BuildWalletCard>
 
   NavAction prev() {
     return NavAction(
-      label: _localization.backLabel,
+      label: localization.backLabel,
       action: prevAction,
     );
   }
 
   NavAction next() {
     return NavAction(
-      label: _localization.continueLabel,
+      label: localization.continueLabel,
       action: nextAction,
     );
   }
@@ -130,7 +129,7 @@ class BuildWalletCardState extends State<BuildWalletCard>
         mainAxisAlignment: MainAxisAlignment.start,
         crossAxisAlignment: CrossAxisAlignment.start,
         children: [
-          Text(_localization.buildWalletHeader,
+          Text(localization.buildWalletHeader,
               style: theme.textTheme.titleLarge),
         ],
       ),
@@ -141,7 +140,7 @@ class BuildWalletCardState extends State<BuildWalletCard>
         Expanded(
             flex: 1,
             child: Text(
-              _localization.buildWallet01,
+              localization.buildWallet01,
               style: theme.textTheme.bodyLarge,
             ))
       ]),
@@ -190,7 +189,7 @@ class BuildWalletCardState extends State<BuildWalletCard>
     final theme = Theme.of(context);
     ScaffoldMessenger.of(context).clearSnackBars();
     ScaffoldMessenger.of(context).showSnackBar(buildErrorSnackbar(
-        theme, _localization.connectionIssue, theme.colorScheme.error));
+        theme, localization.connectionIssue, theme.colorScheme.error));
     Timer(Duration(seconds: 4), () {
       ScaffoldMessenger.of(context).clearSnackBars();
       Navigator.pushReplacementNamed(context, InitScreen.route);
@@ -254,7 +253,7 @@ class BuildWalletCardState extends State<BuildWalletCard>
                         children: [
                           Row(
                             children: [
-                              Text(_localization.buildWalletBalance,
+                              Text(localization.buildWalletBalance,
                                   style: theme.textTheme.bodyLarge),
                               SizedBox(
                                 height: 8,
@@ -283,7 +282,7 @@ class BuildWalletCardState extends State<BuildWalletCard>
               ),
               Row(
                 children: [
-                  Text(_localization.transactionsFound,
+                  Text(localization.transactionsFound,
                       style: theme.textTheme.bodyLarge!),
                   AutoSizeText(
                     '$currentTransactionCount',
@@ -296,7 +295,7 @@ class BuildWalletCardState extends State<BuildWalletCard>
               Row(
                 children: [
                   AutoSizeText(
-                    _localization.exploredAddresses,
+                    localization.exploredAddresses,
                     maxLines: 2,
                     minFontSize: 16,
                   ),
@@ -315,7 +314,7 @@ class BuildWalletCardState extends State<BuildWalletCard>
               Row(
                 children: [
                   Text(
-                    _localization.exploringAddress,
+                    localization.exploringAddress,
                     style: theme.textTheme.bodyLarge!,
                   ),
                   Expanded(

lib/screens/create_wallet/confirm_mnemonic_card.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:witnet/crypto.dart';
+import 'package:my_wit_wallet/constants.dart';
 import 'package:my_wit_wallet/screens/create_wallet/bloc/api_create_wallet.dart';
 import 'package:my_wit_wallet/screens/create_wallet/bloc/create_wallet_bloc.dart';
 import 'package:my_wit_wallet/shared/locator.dart';
@@ -27,7 +27,6 @@ class ConfirmMnemonicCardState extends State<ConfirmMnemonicCard>
   String mnemonic = '';
   final TextEditingController textController = TextEditingController();
   int numLines = 0;
-  AppLocalizations get _localization => AppLocalizations.of(context)!;
 
   void prevAction() {
     CreateWalletType type =
@@ -44,14 +43,14 @@ class ConfirmMnemonicCardState extends State<ConfirmMnemonicCard>
 
   NavAction prev() {
     return NavAction(
-      label: _localization.backLabel,
+      label: localization.backLabel,
       action: prevAction,
     );
   }
 
   NavAction next() {
     return NavAction(
-      label: _localization.continueLabel,
+      label: localization.continueLabel,
       action: nextAction,
     );
   }
@@ -78,14 +77,14 @@ class ConfirmMnemonicCardState extends State<ConfirmMnemonicCard>
       crossAxisAlignment: CrossAxisAlignment.start,
       children: <Widget>[
         Text(
-          _localization.confirmMnemonicHeader,
+          localization.confirmMnemonicHeader,
           style: theme.textTheme.titleLarge,
         ),
         SizedBox(
           height: 16,
         ),
         Text(
-          _localization.confirmMnemonic01,
+          localization.confirmMnemonic01,
           style: theme.textTheme.bodyLarge,
         ),
         SizedBox(

lib/screens/create_wallet/create_import_wallet.dart

@@ -1,5 +1,5 @@
 import 'package:flutter/material.dart';
-import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+import 'package:my_wit_wallet/constants.dart';
 import 'package:my_wit_wallet/screens/login/bloc/login_bloc.dart';
 import 'package:my_wit_wallet/shared/locator.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
@@ -36,8 +36,6 @@ class Action {
 }
 
 class CreateImportWalletState extends State<CreateImportWallet> {
-  AppLocalizations get _localization => AppLocalizations.of(context)!;
-
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
     return Column(
@@ -79,21 +77,21 @@ class CreateImportWalletState extends State<CreateImportWallet> {
 
   Action prev() {
     return Action(
-      label: _localization.backLabel,
+      label: localization.backLabel,
       action: prevAction,
     );
   }
 
   Action nextCreateAction() {
     return Action(
-      label: _localization.createNewWalletLabel,
+      label: localization.createNewWalletLabel,
       action: createWallet,
     );
   }
 
   Action nextImportAction() {
     return Action(
-      label: _localization.importWalletLabel,
+      label: localization.importWalletLabel,
       action: importWallet,
     );
   }
@@ -119,16 +117,16 @@ class CreateImportWalletState extends State<CreateImportWallet> {
                 name: 'create-or-import-wallet', height: 152)),
         SizedBox(height: 16),
         Text(
-          _localization.createImportWalletHeader,
+          localization.createImportWalletHeader,
           style: theme.textTheme.titleLarge,
         ),
         SizedBox(height: 16),
         Text(
-          _localization.createImportWallet01,
+          localization.createImportWallet01,
           style: theme.textTheme.bodyLarge,
         ),
         SizedBox(height: 16),
-        Text(_localization.createImportWallet02,
+        Text(localization.createImportWallet02,
             style: theme.textTheme.bodyLarge)
       ],
     );

lib/screens/create_wallet/create_wallet_screen.dart

@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+import 'package:my_wit_wallet/constants.dart';
 import 'package:my_wit_wallet/screens/create_wallet/create_import_wallet.dart';
 import 'package:my_wit_wallet/screens/create_wallet/re_establish_wallet_disclaimer.dart';
 import 'package:my_wit_wallet/widgets/PaddedButton.dart';
@@ -40,8 +40,6 @@ class CreateWalletScreenState extends State<CreateWalletScreen> {
   bool isLoading = false;
   bool hideButton = false;
 
-  AppLocalizations get _localization => AppLocalizations.of(context)!;
-
   @override
   void initState() {
     super.initState();
@@ -62,7 +60,7 @@ class CreateWalletScreenState extends State<CreateWalletScreen> {
             padding: EdgeInsets.only(bottom: 0),
             text: nextAction != null
                 ? nextAction().label
-                : _localization.continueLabel,
+                : localization.continueLabel,
             type: ButtonType.primary,
             isLoading: isLoading,
             enabled: nextAction != null,

lib/screens/create_wallet/disclaimer_card.dart

@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
-import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+import 'package:my_wit_wallet/constants.dart';
 import 'package:my_wit_wallet/screens/create_wallet/bloc/create_wallet_bloc.dart';
 import 'package:my_wit_wallet/screens/login/bloc/login_bloc.dart';
 import 'package:my_wit_wallet/widgets/labeled_checkbox.dart';
@@ -28,8 +28,6 @@ class DisclaimerCardState extends State<DisclaimerCard>
   bool isCheckBoxFocus = false;
   FocusNode _checkBoxFocusNode = FocusNode();
 
-  AppLocalizations get _localization => AppLocalizations.of(context)!;
-
   @override
   void initState() {
     WidgetsBinding.instance
@@ -74,14 +72,14 @@ class DisclaimerCardState extends State<DisclaimerCard>
 
   NavAction prev() {
     return NavAction(
-      label: _localization.backLabel,
+      label: localization.backLabel,
       action: prevAction,
     );
   }
 
   NavAction next() {
     return NavAction(
-      label: _localization.continueLabel,
+      label: localization.continueLabel,
       action: nextAction,
     );
   }
@@ -95,44 +93,44 @@ class DisclaimerCardState extends State<DisclaimerCard>
       mainAxisSize: MainAxisSize.max,
       children: [
         Text(
-          _localization.walletSecurityHeader,
+          localization.walletSecurityHeader,
           style: theme.textTheme.titleLarge!,
         ),
         SizedBox(
           height: 16,
         ),
         Text(
-          _localization.walletSecurity01,
+          localization.walletSecurity01,
           style: theme.textTheme.bodyLarge,
         ),
         SizedBox(
           height: 10,
         ),
-        Text(_localization.walletSecurity02, style: theme.textTheme.bodyLarge),
+        Text(localization.walletSecurity02, style: theme.textTheme.bodyLarge),
         SizedBox(
           height: 10,
         ),
-        Text(_localization.walletSecurity03, style: theme.textTheme.bodyLarge),
+        Text(localization.walletSecurity03, style: theme.textTheme.bodyLarge),
         SizedBox(
           height: 10,
         ),
-        Text(_localization.walletSecurity04, style: theme.textTheme.bodyLarge),
+        Text(localization.walletSecurity04, style: theme.textTheme.bodyLarge),
         SizedBox(
           height: 10,
         ),
-        Text(_localization.walletSecurity05, style: theme.textTheme.bodyLarge),
+        Text(localization.walletSecurity05, style: theme.textTheme.bodyLarge),
         SizedBox(
           height: 10,
         ),
-        Text(_localization.walletSecurity06, style: theme.textTheme.bodyLarge),
+        Text(localization.walletSecurity06, style: theme.textTheme.bodyLarge),
         SizedBox(
           height: 10,
         ),
         LabeledCheckbox(
             focusNode: _checkBoxFocusNode,
             isFocus: isCheckBoxFocus,
             checked: isNextAllow,
-            label: _localization.walletSecurityConfirmLabel,
+            label: localization.walletSecurityConfirmLabel,
             onChanged: (value) => {
                   setState(() {
                     isNextAllow = !isNextAllow;