150 lines
4.2 KiB
Dart
150 lines
4.2 KiB
Dart
import 'package:flutter/material.dart';
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import '../theme/app_theme.dart';
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/// 空状态组件
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/// 用于显示无数据时的友好提示
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class EmptyStateWidget extends StatelessWidget {
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final IconData icon;
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final String title;
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final String? subtitle;
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final String? actionLabel;
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final VoidCallback? onAction;
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final bool showIllustration;
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const EmptyStateWidget({
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super.key,
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required this.icon,
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required this.title,
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this.subtitle,
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this.actionLabel,
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this.onAction,
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this.showIllustration = true,
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});
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/// 默认空状态 - 无数据
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factory EmptyStateWidget.noData({
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String? title,
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String? subtitle,
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String? actionLabel,
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VoidCallback? onAction,
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}) {
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return EmptyStateWidget(
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icon: Icons.inbox_outlined,
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title: title ?? '暂无数据',
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subtitle: subtitle ?? '使用应用一段时间后，数据将显示在这里',
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actionLabel: actionLabel,
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onAction: onAction,
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);
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}
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/// 空状态 - 无搜索结果
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factory EmptyStateWidget.noSearchResults({
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String? query,
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}) {
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return EmptyStateWidget(
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icon: Icons.search_off,
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title: '未找到匹配结果',
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subtitle: query != null ? '没有找到与 "$query" 相关的内容' : '请尝试其他关键词',
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showIllustration: false,
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);
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}
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/// 空状态 - 无应用数据
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factory EmptyStateWidget.noApps({
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VoidCallback? onAction,
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}) {
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return EmptyStateWidget(
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icon: Icons.apps_outlined,
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title: '暂无应用数据',
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subtitle: '使用应用一段时间后，应用使用记录将显示在这里',
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actionLabel: '刷新',
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onAction: onAction,
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);
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}
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/// 空状态 - 首次使用
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factory EmptyStateWidget.firstTime({
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VoidCallback? onAction,
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}) {
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return EmptyStateWidget(
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icon: Icons.touch_app,
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title: '欢迎使用 AutoTime Tracker',
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subtitle: '开始追踪您的时间使用情况\n\n1. 授予应用使用权限\n2. 正常使用您的设备\n3. 查看详细的使用统计',
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actionLabel: '去设置权限',
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onAction: onAction,
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);
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}
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@override
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Widget build(BuildContext context) {
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final theme = Theme.of(context);
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return Center(
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child: Padding(
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padding: const EdgeInsets.all(32),
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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if (showIllustration) ...[
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Container(
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width: 120,
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height: 120,
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decoration: BoxDecoration(
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color: AppTheme.primaryColor.withOpacity(0.1),
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shape: BoxShape.circle,
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),
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child: Icon(
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icon,
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size: 64,
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color: AppTheme.primaryColor.withOpacity(0.6),
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),
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),
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const SizedBox(height: 24),
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] else ...[
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Icon(
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icon,
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size: 64,
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color: theme.colorScheme.onSurface.withOpacity(0.3),
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),
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const SizedBox(height: 16),
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],
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Text(
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title,
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style: theme.textTheme.titleLarge?.copyWith(
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fontWeight: FontWeight.w600,
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color: theme.colorScheme.onSurface,
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),
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textAlign: TextAlign.center,
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),
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if (subtitle != null) ...[
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const SizedBox(height: 12),
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Text(
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subtitle!,
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style: theme.textTheme.bodyMedium?.copyWith(
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color: theme.colorScheme.onSurface.withOpacity(0.6),
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),
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textAlign: TextAlign.center,
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),
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],
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if (actionLabel != null && onAction != null) ...[
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const SizedBox(height: 24),
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ElevatedButton.icon(
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onPressed: onAction,
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icon: const Icon(Icons.refresh),
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label: Text(actionLabel!),
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style: ElevatedButton.styleFrom(
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padding: const EdgeInsets.symmetric(
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horizontal: 24,
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vertical: 12,
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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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);
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}
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}
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