449 lines
13 KiB
Dart
449 lines
13 KiB
Dart
import 'package:flutter/material.dart';
|
|
import 'package:provider/provider.dart';
|
|
import '../providers/speaking_provider.dart';
|
|
import '../models/speaking_scenario.dart';
|
|
import 'speaking_conversation_screen.dart';
|
|
import 'speaking_history_screen.dart';
|
|
import 'speaking_stats_screen.dart';
|
|
|
|
class SpeakingScreen extends StatefulWidget {
|
|
const SpeakingScreen({super.key});
|
|
|
|
@override
|
|
State<SpeakingScreen> createState() => _SpeakingScreenState();
|
|
}
|
|
|
|
class _SpeakingScreenState extends State<SpeakingScreen>
|
|
with SingleTickerProviderStateMixin {
|
|
late TabController _tabController;
|
|
String _selectedDifficulty = 'all';
|
|
String _selectedScenario = 'all';
|
|
String _searchQuery = '';
|
|
|
|
@override
|
|
void initState() {
|
|
super.initState();
|
|
_tabController = TabController(length: 3, vsync: this);
|
|
WidgetsBinding.instance.addPostFrameCallback((_) {
|
|
context.read<SpeakingProvider>().loadTasks();
|
|
});
|
|
}
|
|
|
|
@override
|
|
void dispose() {
|
|
_tabController.dispose();
|
|
super.dispose();
|
|
}
|
|
|
|
@override
|
|
Widget build(BuildContext context) {
|
|
return Scaffold(
|
|
appBar: AppBar(
|
|
title: const Text('口语练习'),
|
|
backgroundColor: Colors.blue.shade50,
|
|
foregroundColor: Colors.blue.shade800,
|
|
elevation: 0,
|
|
bottom: TabBar(
|
|
controller: _tabController,
|
|
labelColor: Colors.blue.shade800,
|
|
unselectedLabelColor: Colors.grey,
|
|
indicatorColor: Colors.blue.shade600,
|
|
tabs: const [
|
|
Tab(
|
|
icon: Icon(Icons.chat_bubble_outline),
|
|
text: '练习',
|
|
),
|
|
Tab(
|
|
icon: Icon(Icons.history),
|
|
text: '历史',
|
|
),
|
|
Tab(
|
|
icon: Icon(Icons.analytics_outlined),
|
|
text: '统计',
|
|
),
|
|
],
|
|
),
|
|
),
|
|
body: TabBarView(
|
|
controller: _tabController,
|
|
children: [
|
|
_buildPracticeTab(),
|
|
const SpeakingHistoryScreen(),
|
|
const SpeakingStatsScreen(),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
|
|
Widget _buildPracticeTab() {
|
|
return Consumer<SpeakingProvider>(
|
|
builder: (context, provider, child) {
|
|
if (provider.isLoading) {
|
|
return const Center(
|
|
child: CircularProgressIndicator(),
|
|
);
|
|
}
|
|
|
|
if (provider.error != null) {
|
|
return Center(
|
|
child: Column(
|
|
mainAxisAlignment: MainAxisAlignment.center,
|
|
children: [
|
|
Icon(
|
|
Icons.error_outline,
|
|
size: 64,
|
|
color: Colors.grey.shade400,
|
|
),
|
|
const SizedBox(height: 16),
|
|
Text(
|
|
'加载失败',
|
|
style: TextStyle(
|
|
fontSize: 18,
|
|
fontWeight: FontWeight.bold,
|
|
color: Colors.grey.shade600,
|
|
),
|
|
),
|
|
const SizedBox(height: 8),
|
|
Text(
|
|
provider.error!,
|
|
style: TextStyle(
|
|
color: Colors.grey.shade500,
|
|
),
|
|
textAlign: TextAlign.center,
|
|
),
|
|
const SizedBox(height: 16),
|
|
ElevatedButton(
|
|
onPressed: () => provider.loadTasks(),
|
|
child: const Text('重试'),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
|
|
final filteredTasks = _filterTasks(provider.tasks);
|
|
|
|
return Column(
|
|
children: [
|
|
_buildFilterSection(),
|
|
Expanded(
|
|
child: filteredTasks.isEmpty
|
|
? _buildEmptyState()
|
|
: _buildTaskList(filteredTasks),
|
|
),
|
|
],
|
|
);
|
|
},
|
|
);
|
|
}
|
|
|
|
Widget _buildFilterSection() {
|
|
return Container(
|
|
padding: const EdgeInsets.all(16),
|
|
decoration: BoxDecoration(
|
|
color: Colors.white,
|
|
boxShadow: [
|
|
BoxShadow(
|
|
color: Colors.grey.shade200,
|
|
blurRadius: 4,
|
|
offset: const Offset(0, 2),
|
|
),
|
|
],
|
|
),
|
|
child: Column(
|
|
children: [
|
|
// 搜索框
|
|
TextField(
|
|
decoration: InputDecoration(
|
|
hintText: '搜索练习内容...',
|
|
prefixIcon: const Icon(Icons.search),
|
|
border: OutlineInputBorder(
|
|
borderRadius: BorderRadius.circular(12),
|
|
borderSide: BorderSide.none,
|
|
),
|
|
filled: true,
|
|
fillColor: Colors.grey.shade100,
|
|
contentPadding: const EdgeInsets.symmetric(
|
|
horizontal: 16,
|
|
vertical: 12,
|
|
),
|
|
),
|
|
onChanged: (value) {
|
|
setState(() {
|
|
_searchQuery = value;
|
|
});
|
|
},
|
|
),
|
|
const SizedBox(height: 12),
|
|
// 筛选器
|
|
Row(
|
|
children: [
|
|
Expanded(
|
|
child: _buildFilterDropdown(
|
|
'难度',
|
|
_selectedDifficulty,
|
|
[
|
|
{'value': 'all', 'label': '全部'},
|
|
{'value': 'beginner', 'label': '初级'},
|
|
{'value': 'intermediate', 'label': '中级'},
|
|
{'value': 'advanced', 'label': '高级'},
|
|
],
|
|
(value) {
|
|
setState(() {
|
|
_selectedDifficulty = value;
|
|
});
|
|
},
|
|
),
|
|
),
|
|
const SizedBox(width: 12),
|
|
Expanded(
|
|
child: _buildFilterDropdown(
|
|
'场景',
|
|
_selectedScenario,
|
|
[
|
|
{'value': 'all', 'label': '全部'},
|
|
{'value': 'dailyConversation', 'label': '日常对话'},
|
|
{'value': 'businessMeeting', 'label': '商务会议'},
|
|
{'value': 'travel', 'label': '旅行'},
|
|
{'value': 'academic', 'label': '学术讨论'},
|
|
],
|
|
(value) {
|
|
setState(() {
|
|
_selectedScenario = value;
|
|
});
|
|
},
|
|
),
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
|
|
Widget _buildFilterDropdown(
|
|
String label,
|
|
String value,
|
|
List<Map<String, String>> options,
|
|
Function(String) onChanged,
|
|
) {
|
|
return Container(
|
|
padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 4),
|
|
decoration: BoxDecoration(
|
|
border: Border.all(color: Colors.grey.shade300),
|
|
borderRadius: BorderRadius.circular(8),
|
|
),
|
|
child: DropdownButtonHideUnderline(
|
|
child: DropdownButton<String>(
|
|
value: value,
|
|
isExpanded: true,
|
|
hint: Text(label),
|
|
items: options.map((option) {
|
|
return DropdownMenuItem<String>(
|
|
value: option['value'],
|
|
child: Text(option['label']!),
|
|
);
|
|
}).toList(),
|
|
onChanged: (newValue) {
|
|
if (newValue != null) {
|
|
onChanged(newValue);
|
|
}
|
|
},
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
Widget _buildEmptyState() {
|
|
return Center(
|
|
child: Column(
|
|
mainAxisAlignment: MainAxisAlignment.center,
|
|
children: [
|
|
Icon(
|
|
Icons.chat_bubble_outline,
|
|
size: 64,
|
|
color: Colors.grey.shade400,
|
|
),
|
|
const SizedBox(height: 16),
|
|
Text(
|
|
'暂无练习内容',
|
|
style: TextStyle(
|
|
fontSize: 18,
|
|
fontWeight: FontWeight.bold,
|
|
color: Colors.grey.shade600,
|
|
),
|
|
),
|
|
const SizedBox(height: 8),
|
|
Text(
|
|
'请尝试调整筛选条件',
|
|
style: TextStyle(
|
|
color: Colors.grey.shade500,
|
|
),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
|
|
Widget _buildTaskList(List<SpeakingTask> tasks) {
|
|
return ListView.builder(
|
|
padding: const EdgeInsets.all(16),
|
|
itemCount: tasks.length,
|
|
itemBuilder: (context, index) {
|
|
final task = tasks[index];
|
|
return _buildTaskCard(task);
|
|
},
|
|
);
|
|
}
|
|
|
|
Widget _buildTaskCard(SpeakingTask task) {
|
|
return Card(
|
|
margin: const EdgeInsets.only(bottom: 12),
|
|
elevation: 2,
|
|
shape: RoundedRectangleBorder(
|
|
borderRadius: BorderRadius.circular(12),
|
|
),
|
|
child: InkWell(
|
|
borderRadius: BorderRadius.circular(12),
|
|
onTap: () => _startTask(task),
|
|
child: Padding(
|
|
padding: const EdgeInsets.all(16),
|
|
child: Column(
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
|
children: [
|
|
Row(
|
|
children: [
|
|
Container(
|
|
padding: const EdgeInsets.all(8),
|
|
decoration: BoxDecoration(
|
|
color: Colors.blue.shade100,
|
|
borderRadius: BorderRadius.circular(8),
|
|
),
|
|
child: Icon(
|
|
Icons.chat,
|
|
color: Colors.blue.shade600,
|
|
size: 20,
|
|
),
|
|
),
|
|
const SizedBox(width: 12),
|
|
Expanded(
|
|
child: Column(
|
|
crossAxisAlignment: CrossAxisAlignment.start,
|
|
children: [
|
|
Text(
|
|
task.title,
|
|
style: const TextStyle(
|
|
fontSize: 16,
|
|
fontWeight: FontWeight.bold,
|
|
),
|
|
),
|
|
const SizedBox(height: 4),
|
|
Text(
|
|
task.description,
|
|
style: TextStyle(
|
|
fontSize: 14,
|
|
color: Colors.grey.shade600,
|
|
),
|
|
maxLines: 2,
|
|
overflow: TextOverflow.ellipsis,
|
|
),
|
|
],
|
|
),
|
|
),
|
|
],
|
|
),
|
|
const SizedBox(height: 12),
|
|
Row(
|
|
children: [
|
|
_buildTaskTag(
|
|
_getDifficultyLabel(task.difficulty),
|
|
Colors.blue,
|
|
),
|
|
const SizedBox(width: 8),
|
|
_buildTaskTag(
|
|
_getScenarioLabel(task.scenario),
|
|
Colors.green,
|
|
),
|
|
const Spacer(),
|
|
Text(
|
|
'${task.estimatedDuration}分钟',
|
|
style: TextStyle(
|
|
fontSize: 12,
|
|
color: Colors.grey.shade500,
|
|
),
|
|
),
|
|
],
|
|
),
|
|
],
|
|
),
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
Widget _buildTaskTag(String label, Color color) {
|
|
return Container(
|
|
padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
|
|
decoration: BoxDecoration(
|
|
color: color.withOpacity(0.1),
|
|
borderRadius: BorderRadius.circular(12),
|
|
border: Border.all(
|
|
color: color.withOpacity(0.3),
|
|
width: 1,
|
|
),
|
|
),
|
|
child: Text(
|
|
label,
|
|
style: TextStyle(
|
|
fontSize: 12,
|
|
color: color,
|
|
fontWeight: FontWeight.w500,
|
|
),
|
|
),
|
|
);
|
|
}
|
|
|
|
List<SpeakingTask> _filterTasks(List<SpeakingTask> tasks) {
|
|
return tasks.where((task) {
|
|
// 搜索过滤
|
|
if (_searchQuery.isNotEmpty) {
|
|
final query = _searchQuery.toLowerCase();
|
|
if (!task.title.toLowerCase().contains(query) &&
|
|
!task.description.toLowerCase().contains(query)) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
// 难度过滤
|
|
if (_selectedDifficulty != 'all' &&
|
|
task.difficulty.toString().split('.').last != _selectedDifficulty) {
|
|
return false;
|
|
}
|
|
|
|
// 场景过滤
|
|
if (_selectedScenario != 'all' &&
|
|
task.scenario.toString().split('.').last != _selectedScenario) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}).toList();
|
|
}
|
|
|
|
String _getDifficultyLabel(SpeakingDifficulty difficulty) {
|
|
return difficulty.displayName;
|
|
}
|
|
|
|
String _getScenarioLabel(SpeakingScenario scenario) {
|
|
return scenario.displayName;
|
|
}
|
|
|
|
void _startTask(SpeakingTask task) {
|
|
Navigator.push(
|
|
context,
|
|
MaterialPageRoute(
|
|
builder: (context) => SpeakingConversationScreen(task: task),
|
|
),
|
|
);
|
|
}
|
|
} |