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fix: stabilize chat run lifecycle rendering

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This commit is contained in:
qzl
2026-03-17 15:58:29 +08:00
parent 3bf7640000
commit cf56b358ad
5 changed files with 673 additions and 75 deletions
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apps/lib/features/home/ui/screens/home_screen.dart
+115 -34
View File
@@ -44,6 +44,7 @@ const _attachmentPreviewGap = 8.0;
const _bottomStackReservedHeight = 116.0;
const _toolResultWidthFactor = 0.9;
const _pullRefreshMinVisibleMs = 450;
const _waitingIndicatorReservedHeight = 42.0;
const homeConversationStageKey = ValueKey('home_conversation_stage');
const homeBottomInputStackKey = ValueKey('home_bottom_input_stack');
@@ -64,7 +65,6 @@ const _recordingActiveLabelColor = AppColors.white;
class HomeScreen extends StatefulWidget {
final VoiceRecorder? voiceRecorder;
final Future<String> Function(String filePath)? onTranscribeAudio;
final Future<void> Function(String transcript)? onAutoSendTranscript;
final ChatBloc? chatBloc;
final bool autoLoadHistory;
final List<XFile> initialSelectedImages;
@@ -73,7 +73,6 @@ class HomeScreen extends StatefulWidget {
super.key,
this.voiceRecorder,
this.onTranscribeAudio,
this.onAutoSendTranscript,
this.chatBloc,
this.autoLoadHistory = true,
this.initialSelectedImages = const [],
@@ -91,7 +90,6 @@ class _HomeScreenState extends State<HomeScreen>
late final VoiceRecorder _voiceRecorder;
late final InboxApi _inboxApi;
late final Future<String> Function(String filePath) _transcribeAudio;
late final Future<void> Function(String transcript) _autoSendTranscript;
late final AnimationController _listeningAnimationController;
bool _isRecording = false;
bool _isHoldToSpeakMode = true;
@@ -101,6 +99,8 @@ class _HomeScreenState extends State<HomeScreen>
bool _isPullRefreshing = false;
int _unreadCount = 0;
final List<XFile> _selectedImages = [];
int _lastObservedItemCount = 0;
bool _lastObservedWaiting = false;
@override
void initState() {
@@ -110,7 +110,6 @@ class _HomeScreenState extends State<HomeScreen>
_inboxApi = sl<InboxApi>();
_transcribeAudio =
widget.onTranscribeAudio ?? _chatBloc.transcribeAudioFile;
_autoSendTranscript = widget.onAutoSendTranscript ?? _chatBloc.sendMessage;
_listeningAnimationController = AnimationController(
vsync: this,
duration: const Duration(milliseconds: _rippleDurationMs),
@@ -119,6 +118,8 @@ class _HomeScreenState extends State<HomeScreen>
if (widget.autoLoadHistory) {
_chatBloc.loadHistory();
}
_lastObservedItemCount = _chatBloc.state.items.length;
_lastObservedWaiting = _isAgentWaiting(_chatBloc.state);
_loadUnreadCount();
}
@@ -154,6 +155,15 @@ class _HomeScreenState extends State<HomeScreen>
if (state.error != null) {
Toast.show(context, state.error!, type: ToastType.error);
}
final isWaitingNow = _isAgentWaiting(state);
final hasItemCountChanged =
state.items.length != _lastObservedItemCount;
final waitingStateChanged = isWaitingNow != _lastObservedWaiting;
if (hasItemCountChanged || waitingStateChanged) {
_scheduleAutoScroll(animated: hasItemCountChanged);
}
_lastObservedItemCount = state.items.length;
_lastObservedWaiting = isWaitingNow;
},
builder: (context, state) {
return Scaffold(
@@ -190,8 +200,7 @@ class _HomeScreenState extends State<HomeScreen>
}
Widget _buildChatArea(BuildContext context, ChatState state) {
final showWaitingIndicator =
state.isWaitingFirstToken || state.isStreaming || state.isCancelling;
final showWaitingIndicator = _isAgentWaiting(state);
if (state.isLoadingHistory && state.items.isEmpty) {
return const Center(
@@ -219,7 +228,12 @@ class _HomeScreenState extends State<HomeScreen>
child: ListView.builder(
controller: _scrollController,
physics: const AlwaysScrollableScrollPhysics(),
padding: const EdgeInsets.only(top: AppSpacing.sm),
padding: EdgeInsets.only(
top: AppSpacing.sm,
bottom: showWaitingIndicator
? _waitingIndicatorReservedHeight
: AppSpacing.none,
),
itemCount:
state.items.length + (state.hasEarlierHistory ? 1 : 0),
itemBuilder: (context, index) {
@@ -391,6 +405,28 @@ class _HomeScreenState extends State<HomeScreen>
context.read<ChatBloc>().loadMoreHistory();
}
bool _isAgentWaiting(ChatState state) {
return state.isWaitingFirstToken || state.isStreaming || state.isCancelling;
}
void _scheduleAutoScroll({required bool animated}) {
WidgetsBinding.instance.addPostFrameCallback((_) {
if (!_scrollController.hasClients) {
return;
}
final maxExtent = _scrollController.position.maxScrollExtent;
if (animated) {
_scrollController.animateTo(
maxExtent,
duration: const Duration(milliseconds: _scrollDurationMs),
curve: Curves.easeOut,
);
return;
}
_scrollController.jumpTo(maxExtent);
});
}
Widget _buildChatItem(ChatListItem item) {
switch (item.type) {
case ChatItemType.message:
@@ -482,47 +518,89 @@ class _HomeScreenState extends State<HomeScreen>
}
bool _isRenderableImageAttachment(Map<String, dynamic> attachment) {
final path = attachment['path'];
final url = attachment['url'];
final mimeType = attachment['mimeType'];
return url is String &&
url.isNotEmpty &&
final hasRenderableSource =
(url is String && url.isNotEmpty) ||
(path is String && path.isNotEmpty);
return hasRenderableSource &&
mimeType is String &&
mimeType.startsWith('image/');
}
Widget _buildHistoryAttachmentTile(Map<String, dynamic> attachment) {
final path = attachment['path'];
final url = attachment['url'];
if (url is! String || url.isEmpty) {
final isUploading = attachment['uploading'] == true;
final Widget image;
if (url is String && url.isNotEmpty) {
image = Image.network(
url,
fit: BoxFit.cover,
loadingBuilder: (context, child, loadingProgress) {
if (loadingProgress == null) return child;
return const Center(
child: AppLoadingIndicator(
variant: AppLoadingVariant.inline,
size: _transcribingSpinnerSize,
strokeWidth: _transcribingStrokeWidth,
),
);
},
errorBuilder: (context, error, stackTrace) {
return const Center(
child: Icon(
LucideIcons.imageOff,
size: _iconSize,
color: AppColors.slate500,
),
);
},
);
} else if (path is String && path.isNotEmpty) {
image = Image.file(
File(path),
fit: BoxFit.cover,
errorBuilder: (context, error, stackTrace) {
return const Center(
child: Icon(
LucideIcons.imageOff,
size: _iconSize,
color: AppColors.slate500,
),
);
},
);
} else {
return const SizedBox.shrink();
}
return ClipRRect(
borderRadius: BorderRadius.circular(_attachmentPreviewRadius),
child: Container(
width: _attachmentPreviewSize,
height: _attachmentPreviewSize,
color: AppColors.slate100,
child: Image.network(
url,
fit: BoxFit.cover,
loadingBuilder: (context, child, loadingProgress) {
if (loadingProgress == null) return child;
return const Center(
child: AppLoadingIndicator(
variant: AppLoadingVariant.inline,
size: _transcribingSpinnerSize,
strokeWidth: _transcribingStrokeWidth,
child: Stack(
fit: StackFit.expand,
children: [
image,
if (isUploading)
ColoredBox(
color: AppColors.slate900.withValues(alpha: 0.2),
child: const Center(
child: AppLoadingIndicator(
variant: AppLoadingVariant.inline,
size: _transcribingSpinnerSize,
strokeWidth: _transcribingStrokeWidth,
color: AppColors.white,
trackColor: AppColors.slate200,
),
),
),
);
},
errorBuilder: (context, error, stackTrace) {
return const Center(
child: Icon(
LucideIcons.imageOff,
size: _iconSize,
color: AppColors.slate500,
),
);
},
],
),
),
);
@@ -841,7 +919,7 @@ class _HomeScreenState extends State<HomeScreen>
});
try {
await context.read<ChatBloc>().sendMessage(content, images: images);
await _chatBloc.sendMessage(content, images: images);
} finally {
if (mounted) {
setState(() {
@@ -1034,8 +1112,11 @@ class _HomeScreenState extends State<HomeScreen>
TextPosition(offset: transcript.length),
);
if (autoSendAfterTranscribe) {
_messageController.clear();
await _autoSendTranscript(normalizedTranscript);
_messageController.text = normalizedTranscript;
_messageController.selection = TextSelection.fromPosition(
TextPosition(offset: normalizedTranscript.length),
);
await _sendMessage(context);
}
} catch (error) {
if (!mounted) {