Fix gui launch bridged error

src/client/gui/lib/catalogue/launch_form.dart

@@ -56,12 +56,16 @@ class _LaunchFormState extends ConsumerState<LaunchForm> {
     super.dispose();
   }
 
+  final bridgedNetworkProvider = daemonSettingProvider('local.bridged-network');
+
   @override
   Widget build(BuildContext context) {
     final imageInfo = ref.watch(launchingImageProvider);
     final randomName = ref.watch(randomNameProvider);
     final vmNames = ref.watch(vmNamesProvider);
     final deletedVms = ref.watch(deletedVmsProvider);
+    final networks = ref.watch(networksProvider);
+    final bridgedNetworkSetting = ref.watch(bridgedNetworkProvider).valueOrNull;
 
     final closeButton = IconButton(
       icon: const Icon(Icons.close),
@@ -99,19 +103,30 @@ class _LaunchFormState extends ConsumerState<LaunchForm> {
       onSaved: (value) => launchRequest.diskSpace = '${value!}B',
     );
 
+    final validBridgedNetwork = networks.contains(bridgedNetworkSetting);
     final bridgedSwitch = FormField<bool>(
+      enabled: validBridgedNetwork,
       initialValue: false,
       onSaved: (value) {
         if (value!) {
           launchRequest.networkOptions
               .add(LaunchRequest_NetworkOptions(id: 'bridged'));
         }
       },
-      builder: (field) => Switch(
-        label: 'Connect to bridged network',
-        value: field.value!,
-        onChanged: field.didChange,
-      ),
+      builder: (field) {
+        final message = networks.isEmpty
+            ? 'No networks found.'
+            : validBridgedNetwork
+                ? "Connect to the bridged network.\nOnce established, you won't be able to unset the connection."
+                : 'No valid bridged network is set.\nYou can set one in the Settings page.';
+
+        return Switch(
+          label: message,
+          value: validBridgedNetwork ? field.value! : false,
+          enabled: validBridgedNetwork,
+          onChanged: field.didChange,
+        );
+      },
     );
 
     final mountPointsView = MountPointsView(

src/client/gui/lib/grpc_client.dart

@@ -76,18 +76,21 @@ class GrpcClient {
     Future<void>? cancel,
   }) async* {
     logger.i('Sent ${request.repr}');
-    final launchStream = _client.launch(Stream.value(request));
-    cancel?.then((_) => launchStream.cancel());
-    yield* launchStream
+    final launchReplyStream = _client.launch(Stream.value(request));
+    cancel?.then((_) => launchReplyStream.cancel());
+    final launchStream = launchReplyStream
         .doOnData(checkForUpdate)
         .doOnEach(logGrpc(request))
-        .map(Either.left);
+        .map(Either<LaunchReply, MountReply>.left);
+    await for (final launchReply in launchStream) {
+      yield launchReply;
+    }
     for (final mountRequest in mountRequests) {
       logger.i('Sent ${mountRequest.repr}');
       yield* _client
           .mount(Stream.value(mountRequest))
           .doOnEach(logGrpc(mountRequest))
-          .map(Either.right);
+          .map((Either<LaunchReply, MountReply>.right));
     }
   }
 

src/client/gui/lib/settings/virtualization_settings.dart

@@ -42,8 +42,8 @@ class VirtualizationSettings extends ConsumerWidget {
         Dropdown<String>(
           label: 'Bridged network',
           width: 260,
-          value: networks.contains(bridgedNetwork) ? bridgedNetwork : null,
-          items: Map.fromIterable(networks),
+          value: networks.contains(bridgedNetwork) ? bridgedNetwork : '',
+          items: {'': 'None', ...Map.fromIterable(networks)},
           onChanged: (value) {
             ref.read(bridgedNetworkProvider.notifier).set(value!).onError(
                 ref.notifyError((e) => 'Failed to set bridged network: $e'));

src/client/gui/lib/switch.dart

@@ -6,6 +6,7 @@ class Switch extends StatelessWidget {
   final String label;
   final bool trailingSwitch;
   final double size;
+  final bool enabled;
 
   const Switch({
     super.key,
@@ -14,6 +15,7 @@ class Switch extends StatelessWidget {
     this.label = '',
     this.trailingSwitch = false,
     this.size = 25,
+    this.enabled = true,
   });
 
   @override
@@ -22,10 +24,10 @@ class Switch extends StatelessWidget {
       height: size,
       child: FittedBox(
         child: CupertinoSwitch(
-          activeColor: CupertinoColors.activeBlue,
-          trackColor: const Color(0xffd9d9d9),
+          activeTrackColor: CupertinoColors.activeBlue,
+          inactiveTrackColor: const Color(0xffd9d9d9),
           value: value,
-          onChanged: onChanged,
+          onChanged: enabled ? onChanged : null,
         ),
       ),
     );

src/client/gui/lib/vm_details/vm_details_bridge.dart

@@ -54,7 +54,7 @@ class _BridgedDetailsState extends ConsumerState<BridgedDetails> {
         final message = networks.isEmpty
             ? 'No networks found.'
             : validBridgedNetwork
-                ? "Once connection is established, you won't be able to unset it."
+                ? "Once established, you won't be able to unset the connection."
                 : 'No valid bridged network is set.';
 
         return CheckboxListTile(