😋 初始化仓库

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2025-11-13 09:14:49 +08:00
commit 347d264437
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lib/widgets/.gitkeep Normal file
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# Widgets directory
# This directory contains reusable widgets

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import 'package:flutter/material.dart';
/// Confirmation dialog widget
///
/// Displays a confirmation dialog with customizable title, content, and buttons
class ConfirmDialog extends StatelessWidget {
final String title;
final String content;
final String confirmText;
final String cancelText;
final bool isDangerous;
const ConfirmDialog({
super.key,
required this.title,
required this.content,
this.confirmText = '确认',
this.cancelText = '取消',
this.isDangerous = false,
});
@override
Widget build(BuildContext context) {
return AlertDialog(
title: Text(title),
content: Text(content),
actions: [
TextButton(
onPressed: () => Navigator.of(context).pop(false),
child: Text(cancelText),
),
TextButton(
onPressed: () => Navigator.of(context).pop(true),
style: isDangerous
? TextButton.styleFrom(
foregroundColor: Theme.of(context).colorScheme.error,
)
: null,
child: Text(confirmText),
),
],
);
}
/// Show confirmation dialog
static Future<bool> show(
BuildContext context, {
required String title,
required String content,
String confirmText = '确认',
String cancelText = '取消',
bool isDangerous = false,
}) async {
final result = await showDialog<bool>(
context: context,
builder: (context) => ConfirmDialog(
title: title,
content: content,
confirmText: confirmText,
cancelText: cancelText,
isDangerous: isDangerous,
),
);
return result ?? false;
}
}

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import 'package:flutter/material.dart';
import '../models/course.dart';
/// Course card widget
///
/// Displays course information in a card format
/// Shows course name, teacher, and evaluation status
class CourseCard extends StatelessWidget {
final Course course;
const CourseCard({super.key, required this.course});
@override
Widget build(BuildContext context) {
return Card(
margin: const EdgeInsets.only(bottom: 12),
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
// Course name and status
Row(
children: [
Expanded(
child: Text(
course.name,
style: Theme.of(context).textTheme.titleMedium?.copyWith(
fontWeight: FontWeight.bold,
),
),
),
const SizedBox(width: 8),
_buildStatusChip(context),
],
),
const SizedBox(height: 8),
// Teacher info
Row(
children: [
Icon(
Icons.person,
size: 16,
color: Theme.of(context).colorScheme.onSurfaceVariant,
),
const SizedBox(width: 4),
Text(
course.teacher,
style: Theme.of(context).textTheme.bodyMedium?.copyWith(
color: Theme.of(context).colorScheme.onSurfaceVariant,
),
),
],
),
const SizedBox(height: 4),
// Evaluated people info
Row(
children: [
Icon(
Icons.group,
size: 16,
color: Theme.of(context).colorScheme.onSurfaceVariant,
),
const SizedBox(width: 4),
Text(
course.evaluatedPeople,
style: Theme.of(context).textTheme.bodyMedium?.copyWith(
color: Theme.of(context).colorScheme.onSurfaceVariant,
),
),
],
),
],
),
),
);
}
Widget _buildStatusChip(BuildContext context) {
if (course.isEvaluated) {
return Container(
padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
decoration: BoxDecoration(
color: Colors.green.withValues(alpha: 0.1),
borderRadius: BorderRadius.circular(12),
border: Border.all(color: Colors.green.withValues(alpha: 0.3)),
),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
const Icon(Icons.check_circle, size: 14, color: Colors.green),
const SizedBox(width: 4),
Text(
'已评',
style: Theme.of(context).textTheme.bodySmall?.copyWith(
color: Colors.green,
fontWeight: FontWeight.bold,
),
),
],
),
);
} else {
return Container(
padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
decoration: BoxDecoration(
color: Theme.of(context).colorScheme.primaryContainer,
borderRadius: BorderRadius.circular(12),
),
child: Row(
mainAxisSize: MainAxisSize.min,
children: [
Icon(
Icons.pending,
size: 14,
color: Theme.of(context).colorScheme.onPrimaryContainer,
),
const SizedBox(width: 4),
Text(
'待评',
style: Theme.of(context).textTheme.bodySmall?.copyWith(
color: Theme.of(context).colorScheme.onPrimaryContainer,
fontWeight: FontWeight.bold,
),
),
],
),
);
}
}
}

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import 'package:flutter/material.dart';
/// Error dialog widget
///
/// Displays an error message with an icon and optional action button
class ErrorDialog extends StatelessWidget {
final String title;
final String message;
final String? actionText;
final VoidCallback? onAction;
const ErrorDialog({
super.key,
required this.title,
required this.message,
this.actionText,
this.onAction,
});
@override
Widget build(BuildContext context) {
return AlertDialog(
icon: Icon(
Icons.error_outline,
size: 48,
color: Theme.of(context).colorScheme.error,
),
title: Text(title),
content: Text(message),
actions: [
if (actionText != null && onAction != null)
TextButton(
onPressed: () {
Navigator.of(context).pop();
onAction!();
},
child: Text(actionText!),
),
TextButton(
onPressed: () => Navigator.of(context).pop(),
child: const Text('关闭'),
),
],
);
}
/// Show error dialog
static Future<void> show(
BuildContext context, {
required String title,
required String message,
String? actionText,
VoidCallback? onAction,
}) {
return showDialog(
context: context,
builder: (context) => ErrorDialog(
title: title,
message: message,
actionText: actionText,
onAction: onAction,
),
);
}
}

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import 'package:flutter/material.dart';
/// Loading indicator widget
///
/// Displays a circular progress indicator with optional message
class LoadingIndicator extends StatelessWidget {
final String? message;
final double size;
const LoadingIndicator({super.key, this.message, this.size = 40});
@override
Widget build(BuildContext context) {
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: [
SizedBox(
width: size,
height: size,
child: CircularProgressIndicator(strokeWidth: size / 10),
),
if (message != null) ...[
const SizedBox(height: 16),
Text(
message!,
style: Theme.of(context).textTheme.bodyMedium?.copyWith(
color: Theme.of(context).colorScheme.onSurfaceVariant,
),
textAlign: TextAlign.center,
),
],
],
),
);
}
}