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335
client/lib/features/reading/widgets/reading_question_widget.dart
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335
client/lib/features/reading/widgets/reading_question_widget.dart
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import 'package:flutter/material.dart';
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import '../../../core/theme/app_colors.dart';
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import '../../../core/theme/app_dimensions.dart';
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import '../../../core/theme/app_text_styles.dart';
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import '../models/reading_question.dart';
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/// 阅读问题组件
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class ReadingQuestionWidget extends StatelessWidget {
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final ReadingQuestion question;
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final String? selectedAnswer;
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final bool showResult;
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final Function(String) onAnswerSelected;
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final VoidCallback? onNext;
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final VoidCallback? onPrevious;
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final bool isFirst;
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final bool isLast;
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const ReadingQuestionWidget({
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super.key,
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required this.question,
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this.selectedAnswer,
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this.showResult = false,
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required this.onAnswerSelected,
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this.onNext,
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this.onPrevious,
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this.isFirst = false,
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this.isLast = false,
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});
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@override
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Widget build(BuildContext context) {
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return Container(
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padding: const EdgeInsets.all(AppDimensions.spacingLg),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 问题类型标签
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Container(
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padding: const EdgeInsets.symmetric(
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horizontal: AppDimensions.spacingSm,
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vertical: AppDimensions.spacingXs,
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),
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decoration: BoxDecoration(
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color: _getQuestionTypeColor(question.type).withOpacity(0.1),
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borderRadius: BorderRadius.circular(AppDimensions.radiusSm),
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border: Border.all(
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color: _getQuestionTypeColor(question.type),
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width: 1,
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),
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),
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child: Text(
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_getQuestionTypeLabel(question.type),
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style: AppTextStyles.bodySmall.copyWith(
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color: _getQuestionTypeColor(question.type),
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fontWeight: FontWeight.w500,
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),
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),
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),
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const SizedBox(height: AppDimensions.spacingMd),
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// 问题内容
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Text(
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question.question,
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style: AppTextStyles.titleMedium.copyWith(
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fontWeight: FontWeight.w600,
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),
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),
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const SizedBox(height: AppDimensions.spacingLg),
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// 选项列表
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...question.options.asMap().entries.map((entry) {
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final index = entry.key;
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final option = entry.value;
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final optionKey = String.fromCharCode(65 + index.toInt()); // A, B, C, D
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final isSelected = selectedAnswer == optionKey;
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final isCorrect = showResult && question.correctAnswer == optionKey;
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final isWrong = showResult && isSelected && !isCorrect;
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return Container(
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margin: const EdgeInsets.only(bottom: AppDimensions.spacingSm),
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child: InkWell(
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onTap: showResult ? null : () => onAnswerSelected(optionKey),
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borderRadius: BorderRadius.circular(AppDimensions.radiusMd),
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child: Container(
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padding: const EdgeInsets.all(AppDimensions.spacingMd),
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decoration: BoxDecoration(
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color: _getOptionBackgroundColor(
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isSelected,
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isCorrect,
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isWrong,
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showResult,
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),
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border: Border.all(
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color: _getOptionBorderColor(
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isSelected,
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isCorrect,
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isWrong,
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showResult,
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),
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width: 2,
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),
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borderRadius: BorderRadius.circular(AppDimensions.radiusMd),
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),
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child: Row(
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children: [
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// 选项标识
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Container(
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width: 32,
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height: 32,
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decoration: BoxDecoration(
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shape: BoxShape.circle,
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color: _getOptionLabelColor(
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isSelected,
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isCorrect,
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isWrong,
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showResult,
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),
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),
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child: Center(
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child: Text(
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optionKey,
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style: AppTextStyles.bodyMedium.copyWith(
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color: _getOptionLabelTextColor(
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isSelected,
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isCorrect,
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isWrong,
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showResult,
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),
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fontWeight: FontWeight.bold,
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),
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),
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),
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),
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const SizedBox(width: AppDimensions.spacingMd),
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// 选项内容
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Expanded(
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child: Text(
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option,
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style: AppTextStyles.bodyMedium.copyWith(
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color: _getOptionTextColor(
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isSelected,
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isCorrect,
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isWrong,
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showResult,
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),
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),
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),
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),
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// 结果图标
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if (showResult && (isCorrect || isWrong))
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Icon(
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isCorrect ? Icons.check_circle : Icons.cancel,
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color: isCorrect ? AppColors.success : AppColors.error,
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size: 24,
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),
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],
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),
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),
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),
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);
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}).toList(),
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// 解析（如果显示结果且有解析）
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if (showResult && question.explanation != null) ...[
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const SizedBox(height: AppDimensions.spacingLg),
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Container(
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padding: const EdgeInsets.all(AppDimensions.spacingMd),
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decoration: BoxDecoration(
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color: AppColors.info.withOpacity(0.1),
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borderRadius: BorderRadius.circular(AppDimensions.radiusMd),
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border: Border.all(
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color: AppColors.info.withOpacity(0.3),
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),
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),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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Icon(
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Icons.lightbulb_outline,
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color: AppColors.info,
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size: 20,
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),
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const SizedBox(width: AppDimensions.spacingSm),
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Text(
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'解析',
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style: AppTextStyles.titleSmall.copyWith(
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color: AppColors.info,
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fontWeight: FontWeight.w600,
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),
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),
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],
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),
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const SizedBox(height: AppDimensions.spacingSm),
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Text(
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question.explanation!,
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style: AppTextStyles.bodyMedium,
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),
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],
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),
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),
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],
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const SizedBox(height: AppDimensions.spacingXl),
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// 导航按钮
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Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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// 上一题按钮
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if (!isFirst)
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OutlinedButton.icon(
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onPressed: onPrevious,
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icon: const Icon(Icons.arrow_back),
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label: const Text('上一题'),
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)
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else
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const SizedBox.shrink(),
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// 下一题/完成按钮
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if (!isLast)
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ElevatedButton.icon(
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onPressed: selectedAnswer != null ? onNext : null,
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icon: const Icon(Icons.arrow_forward),
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label: const Text('下一题'),
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)
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else
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ElevatedButton.icon(
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onPressed: selectedAnswer != null ? onNext : null,
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icon: const Icon(Icons.check),
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label: const Text('完成'),
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),
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],
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),
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],
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),
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);
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}
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String _getQuestionTypeLabel(QuestionType type) {
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switch (type) {
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case QuestionType.multipleChoice:
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return '选择题';
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case QuestionType.trueFalse:
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return '判断题';
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case QuestionType.fillInBlank:
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return '填空题';
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case QuestionType.shortAnswer:
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return '简答题';
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}
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}
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Color _getQuestionTypeColor(QuestionType type) {
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switch (type) {
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case QuestionType.multipleChoice:
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return AppColors.primary;
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case QuestionType.trueFalse:
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return AppColors.secondary;
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case QuestionType.fillInBlank:
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return AppColors.warning;
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case QuestionType.shortAnswer:
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return AppColors.info;
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}
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}
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Color _getOptionBackgroundColor(
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bool isSelected,
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bool isCorrect,
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bool isWrong,
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bool showResult,
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) {
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if (showResult) {
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if (isCorrect) return AppColors.success.withOpacity(0.1);
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if (isWrong) return AppColors.error.withOpacity(0.1);
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}
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if (isSelected) return AppColors.primary.withOpacity(0.1);
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return AppColors.surface;
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}
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Color _getOptionBorderColor(
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bool isSelected,
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bool isCorrect,
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bool isWrong,
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bool showResult,
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) {
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if (showResult) {
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if (isCorrect) return AppColors.success;
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if (isWrong) return AppColors.error;
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}
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if (isSelected) return AppColors.primary;
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return AppColors.outline;
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}
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Color _getOptionLabelColor(
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bool isSelected,
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bool isCorrect,
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bool isWrong,
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bool showResult,
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) {
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if (showResult) {
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if (isCorrect) return AppColors.success;
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if (isWrong) return AppColors.error;
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}
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if (isSelected) return AppColors.primary;
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return AppColors.surfaceVariant;
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}
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Color _getOptionLabelTextColor(
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bool isSelected,
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bool isCorrect,
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bool isWrong,
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bool showResult,
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) {
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if (showResult && (isCorrect || isWrong)) return AppColors.onPrimary;
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if (isSelected) return AppColors.onPrimary;
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return AppColors.onSurfaceVariant;
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}
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Color _getOptionTextColor(
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bool isSelected,
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bool isCorrect,
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bool isWrong,
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bool showResult,
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) {
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if (showResult) {
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if (isCorrect) return AppColors.success;
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if (isWrong) return AppColors.error;
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}
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if (isSelected) return AppColors.primary;
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return AppColors.onSurface;
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}
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}
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