sinoMedCloud/lib/shared/widgets/error_view.dart

import 'package:flutter/material.dart';

/// 错误状态视图组件
class ErrorView extends StatelessWidget {
  final String? message;
  final String? error;
  final VoidCallback? onRetry;
  final IconData? icon;
  final Color? iconColor;
  final EdgeInsets? padding;

  const ErrorView({
    super.key,
    this.message,
    this.error,
    this.onRetry,
    this.icon,
    this.iconColor,
    this.padding,
  });

  @override
  Widget build(BuildContext context) {
    return Padding(
      padding: padding ?? const EdgeInsets.all(24.0),
      child: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            // 错误图标
            Icon(
              icon ?? Icons.error_outline,
              size: 64,
              color: iconColor ?? Theme.of(context).colorScheme.error,
            ),
            
            const SizedBox(height: 16),
            
            // 错误提示
            Text(
              message ?? '加载失败',
              style: Theme.of(context).textTheme.titleMedium?.copyWith(
                color: Theme.of(context).colorScheme.onSurface,
              ),
              textAlign: TextAlign.center,
            ),
            
            // 详细错误信息（可选）
            if (error != null) ...[
              const SizedBox(height: 8),
              Text(
                error!,
                style: Theme.of(context).textTheme.bodySmall?.copyWith(
                  color: Theme.of(context).colorScheme.onSurface.withOpacity(0.6),
                ),
                textAlign: TextAlign.center,
                maxLines: 3,
                overflow: TextOverflow.ellipsis,
              ),
            ],
            
            // 重试按钮
            if (onRetry != null) ...[
              const SizedBox(height: 24),
              ElevatedButton.icon(
                onPressed: onRetry,
                icon: const Icon(Icons.refresh),
                label: const Text('重试'),
                style: ElevatedButton.styleFrom(
                  padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 12),
                ),
              ),
            ],
          ],
        ),
      ),
    );
  }
}