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feat(news,calendar): improve corporate calendar filters and news sentiment dialogs

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Kleidukos
2026-08-15 19:30:00 +02:00
parent 067f1bfdd5
commit 960a4bdbd6
11 changed files with 556 additions and 87 deletions
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FinlyticApp/lib/features/news/views/news_feed_screen.dart
+66 -12
View File
@@ -7,7 +7,7 @@ import '../repositories/news_repository.dart';
import '../widgets/news_card_item.dart';
import '../widgets/advanced_news_filter_bar.dart';
/// Paginated Infinite Scroll Daily News Feed screen with deduplication and strict chronological sorting.
/// Paginated Infinite Scroll Daily News Feed screen with sentiment toggle filters, real-time update handling, and clean navigation.
class NewsFeedScreen extends StatefulWidget {
final ApiClient apiClient;
final NewsRepository? repository;
@@ -23,7 +23,7 @@ class _NewsFeedScreenState extends State<NewsFeedScreen> {
final ScrollController _scrollController = ScrollController();
final List<NewsArticleModel> _newsItems = [];
int _currentPage = 1;
static const int _pageSize = 15;
static const int _pageSize = 20;
bool _isLoading = false;
bool _hasMore = true;
@@ -32,7 +32,8 @@ class _NewsFeedScreenState extends State<NewsFeedScreen> {
DateTime? _selectedDate;
String? _selectedIsin;
bool _hasSentimentOnly = false;
String? _selectedSentimentFilter; // null, 'POSITIVE', 'NEUTRAL', 'NEGATIVE'
Timer? _debounceTimer;
@override
@@ -72,7 +73,7 @@ class _NewsFeedScreenState extends State<NewsFeedScreen> {
date: _selectedDate?.toIso8601String().substring(0, 10),
query: _searchQuery?.trim(),
isin: _selectedIsin?.trim(),
hasSentiment: _hasSentimentOnly,
hasSentiment: _hasSentimentOnly || _selectedSentimentFilter != null,
);
setState(() {
@@ -97,6 +98,27 @@ class _NewsFeedScreenState extends State<NewsFeedScreen> {
}
}
List<NewsArticleModel> get _filteredNewsItems {
if (_selectedSentimentFilter == null) return _newsItems;
final target = _selectedSentimentFilter!.toUpperCase();
return _newsItems.where((item) {
final s = item.sentiment.toUpperCase();
if (target == 'POSITIVE') return s.contains('POS');
if (target == 'NEGATIVE') return s.contains('NEG');
if (target == 'NEUTRAL') return s.contains('NEU');
return s == target;
}).toList();
}
void _onArticleUpdated(NewsArticleModel updated) {
setState(() {
final idx = _newsItems.indexWhere((e) => e.id == updated.id);
if (idx != -1) {
_newsItems[idx] = updated;
}
});
}
void _onSearchChanged(String? val) {
_searchQuery = val;
_debounceTimer?.cancel();
@@ -120,25 +142,39 @@ class _NewsFeedScreenState extends State<NewsFeedScreen> {
_selectedDate = null;
_selectedIsin = null;
_hasSentimentOnly = false;
_selectedSentimentFilter = null;
});
_loadNews(refresh: true);
}
@override
Widget build(BuildContext context) {
final displayedItems = _filteredNewsItems;
return Scaffold(
body: Padding(
padding: const EdgeInsets.all(20),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
const Text('Marktnachrichten & Feed', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
const Text('Marktnachrichten & Feed', style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold)),
if (_newsItems.isNotEmpty)
Text(
'${displayedItems.length} Artikel angezeigt',
style: TextStyle(color: AppTheme.textMuted, fontSize: 12),
),
],
),
const SizedBox(height: 12),
AdvancedNewsFilterBar(
searchQuery: _searchQuery,
selectedDate: _selectedDate,
selectedIsin: _selectedIsin,
hasSentimentOnly: _hasSentimentOnly,
selectedSentimentFilter: _selectedSentimentFilter,
onSearchChanged: _onSearchChanged,
onIsinChanged: _onIsinChanged,
onDateChanged: (val) {
@@ -149,27 +185,46 @@ class _NewsFeedScreenState extends State<NewsFeedScreen> {
setState(() => _hasSentimentOnly = val);
_loadNews(refresh: true);
},
onSentimentFilterChanged: (val) {
setState(() => _selectedSentimentFilter = val);
},
onResetFilters: _resetFilters,
),
const SizedBox(height: 16),
Expanded(
child: _newsItems.isEmpty && !_isLoading
child: displayedItems.isEmpty && !_isLoading
? Center(
child: Text('Keine Nachrichten für diese Filterkriterien gefunden.', style: TextStyle(color: AppTheme.textMuted)),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(Icons.feed_outlined, size: 40, color: AppTheme.textMuted),
const SizedBox(height: 8),
Text('Keine Nachrichten für diese Filterkriterien gefunden.', style: TextStyle(color: AppTheme.textMuted, fontSize: 13)),
const SizedBox(height: 10),
TextButton(
onPressed: _resetFilters,
child: Text('Filter zurücksetzen', style: TextStyle(color: AppTheme.accentCyan)),
),
],
),
)
: ListView.builder(
controller: _scrollController,
itemCount: _newsItems.length + (_hasMore ? 1 : 0),
itemCount: displayedItems.length + (_hasMore ? 1 : 0),
itemBuilder: (context, index) {
if (index == _newsItems.length) {
if (index == displayedItems.length) {
return Center(
child: Padding(
padding: const EdgeInsets.all(16),
child: CircularProgressIndicator(color: AppTheme.primaryEmerald),
child: CircularProgressIndicator(color: AppTheme.primaryEmerald, strokeWidth: 2),
),
);
}
return NewsCardItem(item: _newsItems[index], apiClient: widget.apiClient);
return NewsCardItem(
item: displayedItems[index],
apiClient: widget.apiClient,
onArticleUpdated: _onArticleUpdated,
);
},
),
),
@@ -179,4 +234,3 @@ class _NewsFeedScreenState extends State<NewsFeedScreen> {
);
}
}