add coin as arg to BuyInWalletView->BuyView->BuyForm

lib/pages/buy_view/buy_form.dart

@@ -48,10 +48,13 @@ import 'package:stackwallet/widgets/textfield_icon_button.dart';
 class BuyForm extends ConsumerStatefulWidget {
   const BuyForm({
     Key? key,
+    this.coin,
     this.clipboard = const ClipboardWrapper(),
     this.scanner = const BarcodeScannerWrapper(),
   }) : super(key: key);
 
+  final Coin? coin;
+
   final ClipboardInterface clipboard;
   final BarcodeScannerInterface scanner;
 
@@ -60,6 +63,8 @@ class BuyForm extends ConsumerStatefulWidget {
 }
 
 class _BuyFormState extends ConsumerState<BuyForm> {
+  late final Coin? coin;
+
   late final ClipboardInterface clipboard;
   late final BarcodeScannerInterface scanner;
 
@@ -701,7 +706,10 @@ class _BuyFormState extends ConsumerState<BuyForm> {
     // TODO set defaults better; should probably explicitly enumerate the coins & fiats used and pull the specific ones we need rather than generating them as defaults here
     selectedFiat =
         Fiat.fromJson({'ticker': 'USD', 'name': 'United States Dollar'});
-    selectedCrypto = Crypto.fromJson({'ticker': 'BTC', 'name': 'Bitcoin'});
+    selectedCrypto = Crypto.fromJson({
+      'ticker': widget.coin?.ticker ?? 'BTC',
+      'name': widget.coin?.prettyName ?? 'Bitcoin'
+    });
 
     // TODO set initial crypto to open wallet if a wallet is open
 

lib/pages/buy_view/buy_in_wallet_view.dart

@@ -1,20 +1,28 @@
 import 'package:flutter/material.dart';
 import 'package:stackwallet/pages/buy_view/buy_view.dart';
+import 'package:stackwallet/utilities/enums/coin_enum.dart';
 import 'package:stackwallet/utilities/text_styles.dart';
 import 'package:stackwallet/utilities/theme/stack_colors.dart';
 import 'package:stackwallet/widgets/background.dart';
 import 'package:stackwallet/widgets/custom_buttons/app_bar_icon_button.dart';
 
 class BuyInWalletView extends StatefulWidget {
-  const BuyInWalletView({Key? key}) : super(key: key);
+  const BuyInWalletView({
+    Key? key,
+    required this.coin,
+  }) : super(key: key);
 
   static const String routeName = "/stackBuyInWalletView";
 
+  final Coin? coin;
+
   @override
   State<BuyInWalletView> createState() => _BuyInWalletViewState();
 }
 
 class _BuyInWalletViewState extends State<BuyInWalletView> {
+  late final Coin? coin;
+
   @override
   Widget build(BuildContext context) {
     debugPrint("BUILD: $runtimeType");
@@ -33,7 +41,7 @@ class _BuyInWalletViewState extends State<BuyInWalletView> {
             style: STextStyles.navBarTitle(context),
           ),
         ),
-        body: const BuyView(),
+        body: BuyView(coin: widget.coin),
       ),
     );
   }

lib/pages/buy_view/buy_view.dart

@@ -1,16 +1,24 @@
 import 'package:flutter/material.dart';
 import 'package:stackwallet/pages/buy_view/buy_form.dart';
+import 'package:stackwallet/utilities/enums/coin_enum.dart';
 
 class BuyView extends StatefulWidget {
-  const BuyView({Key? key}) : super(key: key);
+  const BuyView({
+    Key? key,
+    this.coin,
+  }) : super(key: key);
 
   static const String routeName = "/stackBuyView";
 
+  final Coin? coin;
+
   @override
   State<BuyView> createState() => _BuyViewState();
 }
 
 class _BuyViewState extends State<BuyView> {
+  late final Coin? coin;
+
   @override
   Widget build(BuildContext context) {
     debugPrint("BUILD: $runtimeType");

lib/pages/wallet_view/wallet_view.dart

@@ -779,6 +779,7 @@ class _WalletViewState extends ConsumerState<WalletView> {
 
                                       unawaited(Navigator.of(context).pushNamed(
                                         BuyInWalletView.routeName,
+                                        arguments: coin,
                                       ));
                                     },
                                   ),

lib/route_generator.dart

@@ -1134,10 +1134,16 @@ class RouteGenerator {
             settings: RouteSettings(name: settings.name));
 
       case BuyInWalletView.routeName:
+        if (args is Coin) {
           return getRoute(
             shouldUseMaterialRoute: useMaterialPageRoute,
-            builder: (_) => const BuyInWalletView(),
+            builder: (_) => BuyInWalletView(coin: args),
-            settings: RouteSettings(name: settings.name));
+            settings: RouteSettings(
+              name: settings.name,
+            ),
+          );
+        }
+        return _routeError("${settings.name} invalid args: ${args.toString()}");
 
       case DesktopBuyView.routeName:
         return getRoute(