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refactor: 拆分对话页 build，抽出消息气泡组件

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- _TurnBubble：单条对话气泡（翻译、播放/翻译/句型解析操作）
- _TurnAction：气泡下方的图标文字按钮，替代三段重复布局
- 提示按钮逻辑移到 _showHint()

_DialoguePageState.build 从约 320 行降到约 170 行，无用户可见变化。

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
shenlei
2026-09-16 17:24:29 +09:00
co-authored by Claude Opus 5
parent f79ba6327e
commit 29b1738162
1 changed files with 158 additions and 166 deletions
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kouyu_english/lib/features/dialogue/dialogue_flow.dart
+158 -166
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@@ -11,11 +11,7 @@ import '../../widgets/lexicon_lookup.dart';
import '../../widgets/voice_answer.dart';
class DialogueScenePage extends StatelessWidget {
const DialogueScenePage({
super.key,
required this.onStart,
this.onBack,
});
const DialogueScenePage({super.key, required this.onStart, this.onBack});
final VoidCallback onStart;
final VoidCallback? onBack;
@@ -174,7 +170,8 @@ class _DialoguePageState extends State<DialoguePage>
// 3. Check all lesson dialogues
for (final dialogue in a0Dialogues.values) {
for (var i = 0; i < dialogue.prompts.length; i++) {
if (dialogue.prompts[i].trim().toLowerCase() == cleanText.toLowerCase()) {
if (dialogue.prompts[i].trim().toLowerCase() ==
cleanText.toLowerCase()) {
if (i < dialogue.translations.length) {
return dialogue.translations[i];
}
@@ -184,7 +181,8 @@ class _DialoguePageState extends State<DialoguePage>
// 4. Check all segment dialogues
for (final dialogue in a0SegmentDialogues.values) {
for (var i = 0; i < dialogue.prompts.length; i++) {
if (dialogue.prompts[i].trim().toLowerCase() == cleanText.toLowerCase()) {
if (dialogue.prompts[i].trim().toLowerCase() ==
cleanText.toLowerCase()) {
if (i < dialogue.translations.length) {
return dialogue.translations[i];
}
@@ -261,6 +259,7 @@ class _DialoguePageState extends State<DialoguePage>
controller.dispose();
super.dispose();
}
void _scrollToBottom() {
WidgetsBinding.instance.addPostFrameCallback((_) {
if (_scrollController.hasClients) {
@@ -273,7 +272,6 @@ class _DialoguePageState extends State<DialoguePage>
});
}
Future<void> send() async {
final text = controller.text.trim();
if (text.isEmpty || stage >= script.prompts.length || waitingForReply) {
@@ -281,7 +279,8 @@ class _DialoguePageState extends State<DialoguePage>
}
if (!_matchesCurrentTask(text)) {
setState(
() => validationError = '这一轮要“${_currentTaskLabel()}”，这句还没做到。'
() => validationError =
'这一轮要“${_currentTaskLabel()}”，这句还没做到。'
'可以点“提示”看示范，再补充一次。',
);
return;
@@ -332,7 +331,8 @@ class _DialoguePageState extends State<DialoguePage>
.toList(),
);
if (!mounted) return;
final replyText = aiResponse?.reply ??
final replyText =
aiResponse?.reply ??
(nextStage < script.prompts.length
? script.prompts[nextStage]
: _closingLine);
@@ -469,8 +469,9 @@ class _DialoguePageState extends State<DialoguePage>
text: turn.text,
);
if (!mounted) return;
final finalTrans =
(fetched != null && fetched.isNotEmpty) ? fetched : "暂无该句中文翻译";
final finalTrans = (fetched != null && fetched.isNotEmpty)
? fetched
: "暂无该句中文翻译";
setState(() {
turns[index] = turn.copyWith(translation: finalTrans);
});
@@ -513,8 +514,9 @@ class _DialoguePageState extends State<DialoguePage>
text: latestAi.text,
);
if (!mounted) return;
final finalTrans =
(fetched != null && fetched.isNotEmpty) ? fetched : "暂无该句中文翻译";
final finalTrans = (fetched != null && fetched.isNotEmpty)
? fetched
: "暂无该句中文翻译";
setState(() {
hint = "对方说：$finalTrans";
turns[latestAiIndex] = latestAi.copyWith(translation: finalTrans);
@@ -551,6 +553,18 @@ class _DialoguePageState extends State<DialoguePage>
await startVoiceInput();
}
void _showHint() {
setState(() {
usedHelp = true;
final hintIdx = stage < script.hints.length
? stage
: (script.hints.isNotEmpty ? script.hints.length - 1 : 0);
hint = script.hints.isNotEmpty ? script.hints[hintIdx] : null;
});
_saveDraft();
_scrollToBottom();
}
void _showWord() => showLexiconLookup(
context,
state: widget.state,
@@ -583,137 +597,12 @@ class _DialoguePageState extends State<DialoguePage>
physics: const NeverScrollableScrollPhysics(),
itemCount: turns.length,
separatorBuilder: (_, _) => const SizedBox(height: 10),
itemBuilder: (context, index) {
final turn = turns[index];
return Align(
alignment: turn.isLearner
? Alignment.centerRight
: Alignment.centerLeft,
child: Container(
constraints: const BoxConstraints(maxWidth: 290),
padding: const EdgeInsets.all(12),
decoration: BoxDecoration(
color: turn.isLearner
? AppColors.warm
: AppColors.softGreen,
borderRadius: BorderRadius.circular(15),
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
LexiconText(turn.text, state: widget.state),
if (!turn.isLearner) ...[
if (_shownTranslations.contains(index) &&
turn.translation != null &&
turn.translation!.isNotEmpty) ...[
const SizedBox(height: 6),
Container(
padding: const EdgeInsets.symmetric(
horizontal: 8,
vertical: 4,
),
decoration: BoxDecoration(
color: Colors.white.withValues(alpha: 0.6),
borderRadius: BorderRadius.circular(6),
),
child: Text(
turn.translation!,
style: const TextStyle(
fontSize: 13,
color: Color(0xFF2D3748),
),
),
),
],
const SizedBox(height: 6),
Row(
mainAxisSize: MainAxisSize.min,
children: [
GestureDetector(
onTap: () =>
VoiceService.instance.speak(turn.text),
child: const Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(
Icons.volume_up_outlined,
size: 16,
color: AppColors.green,
),
SizedBox(width: 4),
Text(
"播放",
style: TextStyle(
fontSize: 12,
color: AppColors.green,
fontWeight: FontWeight.w500,
),
),
],
),
),
const SizedBox(width: 14),
GestureDetector(
onTap: () => _toggleTurnTranslation(index),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(
_shownTranslations.contains(index)
? Icons.translate
: Icons.translate_outlined,
size: 16,
color: AppColors.green,
),
const SizedBox(width: 4),
Text(
_shownTranslations.contains(index)
? "隐藏翻译"
: "翻译",
style: const TextStyle(
fontSize: 12,
color: AppColors.green,
fontWeight: FontWeight.w500,
),
),
],
),
),
const SizedBox(width: 14),
GestureDetector(
onTap: () => showLexiconLookup(
context,
state: widget.state,
initialText: turn.text,
),
child: const Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(
Icons.psychology_alt_outlined,
size: 16,
color: AppColors.green,
),
SizedBox(width: 4),
Text(
"句型解析",
style: TextStyle(
fontSize: 12,
color: AppColors.green,
fontWeight: FontWeight.w500,
),
),
],
),
),
],
),
],
],
),
),
);
},
itemBuilder: (context, index) => _TurnBubble(
turn: turns[index],
state: widget.state,
showTranslation: _shownTranslations.contains(index),
onToggleTranslation: () => _toggleTurnTranslation(index),
),
),
),
if (!finished) ...[
@@ -721,24 +610,8 @@ class _DialoguePageState extends State<DialoguePage>
spacing: 8,
runSpacing: 8,
children: [
_AssistChip(
label: '提示',
onTap: () {
setState(() {
usedHelp = true;
final hintIdx = stage < script.hints.length
? stage
: (script.hints.isNotEmpty ? script.hints.length - 1 : 0);
hint = script.hints.isNotEmpty ? script.hints[hintIdx] : null;
});
_saveDraft();
_scrollToBottom();
},
),
_AssistChip(
label: '翻译',
onTap: _showLatestAiTranslation,
),
_AssistChip(label: '提示', onTap: _showHint),
_AssistChip(label: '翻译', onTap: _showLatestAiTranslation),
_AssistChip(
label: '慢一点',
onTap: () => _playLatestAi(slow: true),
@@ -809,9 +682,7 @@ class _DialoguePageState extends State<DialoguePage>
child: CircularProgressIndicator(strokeWidth: 2),
)
: Icon(
listening
? Icons.stop_circle
: Icons.mic_none,
listening ? Icons.stop_circle : Icons.mic_none,
color: listening ? Colors.redAccent : null,
),
onPressed: transcribing ? null : _toggleListening,
@@ -877,6 +748,127 @@ class _DialoguePageState extends State<DialoguePage>
}
}
class _TurnBubble extends StatelessWidget {
const _TurnBubble({
required this.turn,
required this.state,
required this.showTranslation,
required this.onToggleTranslation,
});
final DialogueTurn turn;
final AppState state;
final bool showTranslation;
final VoidCallback onToggleTranslation;
@override
Widget build(BuildContext context) {
final translation = turn.translation;
return Align(
alignment: turn.isLearner ? Alignment.centerRight : Alignment.centerLeft,
child: Container(
constraints: const BoxConstraints(maxWidth: 290),
padding: const EdgeInsets.all(12),
decoration: BoxDecoration(
color: turn.isLearner ? AppColors.warm : AppColors.softGreen,
borderRadius: BorderRadius.circular(15),
),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
LexiconText(turn.text, state: state),
if (!turn.isLearner) ...[
if (showTranslation &&
translation != null &&
translation.isNotEmpty) ...[
const SizedBox(height: 6),
Container(
padding: const EdgeInsets.symmetric(
horizontal: 8,
vertical: 4,
),
decoration: BoxDecoration(
color: Colors.white.withValues(alpha: 0.6),
borderRadius: BorderRadius.circular(6),
),
child: Text(
translation,
style: const TextStyle(
fontSize: 13,
color: Color(0xFF2D3748),
),
),
),
],
const SizedBox(height: 6),
Row(
mainAxisSize: MainAxisSize.min,
children: [
_TurnAction(
icon: Icons.volume_up_outlined,
label: '播放',
onTap: () => VoiceService.instance.speak(turn.text),
),
const SizedBox(width: 14),
_TurnAction(
icon: showTranslation
? Icons.translate
: Icons.translate_outlined,
label: showTranslation ? '隐藏翻译' : '翻译',
onTap: onToggleTranslation,
),
const SizedBox(width: 14),
_TurnAction(
icon: Icons.psychology_alt_outlined,
label: '句型解析',
onTap: () => showLexiconLookup(
context,
state: state,
initialText: turn.text,
),
),
],
),
],
],
),
),
);
}
}
class _TurnAction extends StatelessWidget {
const _TurnAction({
required this.icon,
required this.label,
required this.onTap,
});
final IconData icon;
final String label;
final VoidCallback onTap;
@override
Widget build(BuildContext context) => GestureDetector(
onTap: onTap,
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(icon, size: 16, color: AppColors.green),
const SizedBox(width: 4),
Text(
label,
style: const TextStyle(
fontSize: 12,
color: AppColors.green,
fontWeight: FontWeight.w500,
),
),
],
),
);
}
class _AssistChip extends StatelessWidget {
const _AssistChip({required this.label, required this.onTap});
final String label;