feat(mobile): UI-01 theme system, shared components and navigation
Co-Authored-By: Claude Code <noreply@anthropic.com>
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/// 分组标题(UI-01 §3.1:分组标题 17-18):标题 + 可选行尾动作。
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///
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/// 标题取主题 titleMedium(w600);行尾动作由调用方构建(如「查看全部」
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/// TextButton)。不自带内外边距——由页面布局决定(避免为每个 SizedBox
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/// 建一层封装)。
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library;
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import 'package:flutter/material.dart';
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/// 分组标题行。
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class SectionHeader extends StatelessWidget {
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const SectionHeader({required this.title, this.trailing, super.key});
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/// 分组标题(本地化文案)。
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final String title;
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/// 行尾动作(可选)。
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final Widget? trailing;
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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 Row(
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children: [
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Expanded(
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child: Text(
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title,
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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style: theme.textTheme.titleMedium,
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),
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),
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if (trailing != null) ...[const SizedBox(width: 8), trailing!],
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],
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);
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}
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}
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