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[examples] Verdure client cleanup and dependency updates #646

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[examples] Verdure client cleanup and dependency updates #646

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[examples] Verdure client cleanup and dependency updates
parlough Dec 28, 2025
1f2bb5e
Merge branch 'main' into misc/verdure-client-cleanup
parlough Jan 5, 2026
0d541f2
Merge branch 'main' into misc/verdure-client-cleanup
parlough Jan 6, 2026
f3994cc
Resolve another strict-raw-types diagnostic
parlough Jan 6, 2026
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2 changes: 1 addition & 1 deletion examples/verdure/client/lib/features/ai/ai_provider.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -49,7 +49,7 @@ class AiClientState {
required this.surfaceUpdateController,
});

/// The A2uiMessageProcessor.
/// The A2UI message processor.
final A2uiMessageProcessor a2uiMessageProcessor;

/// The content generator.
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21 changes: 10 additions & 11 deletions examples/verdure/client/lib/features/ai/ai_provider.g.dart
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2 changes: 1 addition & 1 deletion examples/verdure/client/lib/features/screens/order_confirmation_screen.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -44,7 +44,7 @@ class OrderConfirmationScreen extends ConsumerWidget {
error: (error, stackTrace) => Center(child: Text('Error: $error')),
),
bottomNavigationBar: Padding(
padding: const EdgeInsets.all(16.0),
padding: const EdgeInsets.all(16),
child: ElevatedButton(
onPressed: () => context.go('/'),
child: const Text('Back to Start'),
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6 changes: 3 additions & 3 deletions examples/verdure/client/lib/features/screens/questionnaire_screen.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -25,12 +25,12 @@ class _QuestionnaireScreenState extends ConsumerState<QuestionnaireScreen> {
@override
Widget build(BuildContext context) {
ref.listen<AsyncValue<AiClientState>>(aiProvider, (previous, next) {
if (next is AsyncData && !_initialRequestSent) {
if (_initialRequestSent) return;
if (next case AsyncData(value: final aiState)) {
setState(() {
_initialRequestSent = true;
});
final AiClientState? aiState = next.value;
aiState?.conversation.sendRequest(
aiState.conversation.sendRequest(
UserMessage.text('USER_SUBMITTED_DETAILS'),
);
}
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20 changes: 11 additions & 9 deletions examples/verdure/client/lib/features/screens/upload_photo_screen.dart
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Expand Up @@ -33,7 +33,7 @@ class UploadPhotoScreen extends ConsumerWidget {
),
body: SingleChildScrollView(
child: Padding(
padding: const EdgeInsets.all(16.0),
padding: const EdgeInsets.all(16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
children: [
Expand All @@ -52,7 +52,9 @@ class UploadPhotoScreen extends ConsumerWidget {
),
const SizedBox(height: 16),
Text(
'''Upload a photo of your front or back yard, and our designers will use it to create a custom vision. Get ready to see the potential.''',
'Upload a photo of your front or back yard, '
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@gspencergoog gspencergoog Jan 6, 2026

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I was using triple quotes here because agents seem to have a hard time wrapping these multi-line strings, and triple quotes avoid the lint warning. I'm fine with converting them back, but it does mean more manual work if the LLMs modify the strings, since they will inevitably fail to wrap them properly.

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@parlough parlough Jan 6, 2026 •
edited
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Ah, thanks for the context here and thanks for raising this.

I think since this is an example, we should still try to be idiomatic even if it involves a little extra work.

I do wonder what we can do to make agents better at breaking strings in general. I find while agents don't handle wrapping/splitting strings well, LLM-based tab/auto-complete handles it quite well across different editors. Perhaps similar examples in the edited file are ending up closer in the context window?

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@gspencergoog gspencergoog Jan 6, 2026

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Works for me. It think it's just that they are bad at counting characters. I think they need an edit tool that takes a line range and wraps it, contextually, based on language and context in the code.

'and our designers will use it to create a custom vision. '
'Get ready to see the potential.',
textAlign: TextAlign.center,
style: Theme.of(context).textTheme.bodyMedium!.copyWith(
color: Theme.of(context).colorScheme.onSurface,
Expand Down Expand Up @@ -146,34 +148,34 @@ class InfoCard extends StatelessWidget {
child: InkWell(
onTap: onTap,
child: Padding(
padding: const EdgeInsets.all(16.0),
padding: const EdgeInsets.all(16),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
spacing: 16,
children: [
CircleAvatar(
maxRadius: 25,
child: Icon(icon, size: 25, color: const Color(0xff15a34a)),
),
if (title != null || subtitle != null) const SizedBox(width: 16),
if (title != null || subtitle != null)
Expanded(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
spacing: 4,
children: [
if (title != null)
if (title case final title?)
Text(
title!,
title,
style: Theme.of(context).textTheme.titleMedium!
.copyWith(
fontWeight: FontWeight.bold,
color: Theme.of(context).colorScheme.onSurface,
),
),
if (subtitle != null) const SizedBox(height: 4),
if (subtitle != null)
if (subtitle case final subtitle?)
Text(
subtitle!,
subtitle,
style: Theme.of(context).textTheme.bodyMedium!
.copyWith(
color: Theme.of(context).colorScheme.onSurface,
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14 changes: 7 additions & 7 deletions examples/verdure/client/lib/features/screens/welcome_screen.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -37,12 +37,12 @@ class WelcomeScreen extends StatelessWidget {
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Padding(
padding: const EdgeInsets.only(top: 64.0),
padding: const EdgeInsets.only(top: 64),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
spacing: 8,
children: [
const Icon(Icons.eco, color: Colors.white, size: 32),
const SizedBox(width: 8),
Text(
'Verdure',
style: Theme.of(context).textTheme.headlineSmall
Expand All @@ -55,8 +55,9 @@ class WelcomeScreen extends StatelessWidget {
),
),
const Padding(
padding: EdgeInsets.all(16.0),
padding: EdgeInsets.all(16),
child: Column(
spacing: 16,
children: [
Text(
'Envision Your Dream Landscape',
Expand All @@ -68,9 +69,9 @@ class WelcomeScreen extends StatelessWidget {
fontWeight: FontWeight.bold,
),
),
SizedBox(height: 16),
Text(
'''Bring your perfect outdoor space to life with our suite of AI design agents.''',
'Bring your perfect outdoor space to life with '
'our suite of AI design agents.',
textAlign: TextAlign.center,
style: TextStyle(
fontFamily: 'SpaceGrotesk',
Expand All @@ -89,6 +90,7 @@ class WelcomeScreen extends StatelessWidget {
Container(
padding: const EdgeInsets.fromLTRB(16, 16, 16, 24),
child: Column(
spacing: 16,
children: [
ElevatedButton(
onPressed: () => context.push('/upload_photo'),
Expand All @@ -99,12 +101,10 @@ class WelcomeScreen extends StatelessWidget {
),
child: const Text('Start New Project'),
),
const SizedBox(height: 16),
TextButton(
onPressed: () {},
child: const Text('Explore Ideas'),
),
const SizedBox(height: 16),
TextButton(
onPressed: () {},
child: const Text('I\'m a returning user'),
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2 changes: 1 addition & 1 deletion examples/verdure/client/lib/features/state/loading_state.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@ class LoadingState {
} else if (_isProcessingValue && !isProcessing.value) {
// Went from true to false, reset messages after a short delay
// to allow the fade-out animation to complete.
Future.delayed(const Duration(milliseconds: 500), clearMessages);
Future<void>.delayed(const Duration(milliseconds: 500), clearMessages);
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@gspencergoog gspencergoog Jan 6, 2026

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Perhaps we should enable strict-raw-types (https://dart.dev/tools/analysis#enabling-additional-type-checks)? Or is that too much?

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@parlough parlough Jan 6, 2026

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I'm all for it, but since we use a workspace-wide analysis config, I can do that in a follow-up PR for the repository.

I enabled it temporarily for verdure and fixed the one other instance of it.

}
_isProcessingValue = isProcessing.value;
});
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10 changes: 5 additions & 5 deletions examples/verdure/client/lib/features/widgets/app_navigator.dart
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Expand Up @@ -23,16 +23,16 @@ class AppNavigator extends ConsumerStatefulWidget {
}

class _AppNavigatorState extends ConsumerState<AppNavigator> {
StreamSubscription? _subscription;
StreamSubscription<void>? _subscription;

@override
void initState() {
super.initState();
// It's safe to use ref.read here because we are not rebuilding the widget
// when the provider changes, but instead subscribing to a stream.
final AsyncValue<AiClientState> aiState = ref.read(aiProvider);
if (aiState is AsyncData) {
_subscription = aiState.value!.surfaceUpdateController.stream.listen(
if (aiState case AsyncData(:final value)) {
_subscription = value.surfaceUpdateController.stream.listen(
_onSurfaceUpdate,
);
}
Expand Down Expand Up @@ -62,9 +62,9 @@ class _AppNavigatorState extends ConsumerState<AppNavigator> {
@override
Widget build(BuildContext context) {
ref.listen<AsyncValue<AiClientState?>>(aiProvider, (previous, next) {
if (next is AsyncData) {
if (next case AsyncData(:final value?)) {
_subscription?.cancel();
_subscription = next.value!.surfaceUpdateController.stream.listen(
_subscription = value.surfaceUpdateController.stream.listen(
_onSurfaceUpdate,
);
}
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10 changes: 5 additions & 5 deletions examples/verdure/client/lib/features/widgets/global_progress_indicator.dart
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Expand Up @@ -111,27 +111,27 @@ class _LoadingMessagesState extends State<_LoadingMessages> {
color: Colors.transparent,
child: Center(
child: Padding(
padding: const EdgeInsets.symmetric(horizontal: 24.0),
padding: const EdgeInsets.symmetric(horizontal: 24),
child: Container(
height: 80.0,
height: 80,
padding: const EdgeInsets.symmetric(horizontal: 24),
decoration: BoxDecoration(
color: colorScheme.primary,
borderRadius: BorderRadius.circular(8.0),
borderRadius: BorderRadius.circular(8),
),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
spacing: 16,
children: [
const SizedBox(
width: 20,
height: 20,
child: CircularProgressIndicator(
strokeWidth: 2.0,
strokeWidth: 2,
valueColor: AlwaysStoppedAnimation<Color>(Colors.white),
),
),
const SizedBox(width: 16),
Expanded(
child: AnimatedSwitcher(
duration: const Duration(milliseconds: 500),
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14 changes: 8 additions & 6 deletions examples/verdure/client/pubspec.yaml
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Expand Up @@ -3,8 +3,10 @@
# found in the LICENSE file.

name: verdure
description: "A new Flutter project."
publish_to: "none"
description: >-
A sample of a Flutter client interacting with a Python-based A2A
(Agent-to-Agent) server for landscape design.
publish_to: none
version: 0.1.0

environment:
Expand All @@ -16,23 +18,23 @@ dependencies:
device_info_plus: ^12.2.0
flutter:
sdk: flutter
flutter_riverpod: ^3.0.3
flutter_riverpod: ^3.1.0
flutter_svg: ^2.2.2
genui: ^0.6.0
genui_a2ui: ^0.6.0
go_router: ^17.0.0
image_picker: ^1.2.0
logging: ^1.3.0
mime: ^2.0.0
riverpod_annotation: ^3.0.3
riverpod_annotation: ^4.0.0

dev_dependencies:
build_runner: ^2.7.1
build_runner: ^2.10.3
dart_flutter_team_lints: ^3.5.2
flutter_lints: ^6.0.0
flutter_test:
sdk: flutter
riverpod_generator: ^3.0.3
riverpod_generator: ^4.0.0

flutter:
uses-material-design: true
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