崔宝新
586c75f841
本次提交完成了班级模块的多项核心功能开发与优化： 1. 新增DELETE请求封装，支持业务删除接口且不自动重试 2. 完善UserPostCommonDto模型，新增头像字段适配详情接口 3. 重构路由架构，使用StatefulShellRoute实现Tab页面保活 4. 新增我的互动页面，包含我的动态/点赞/留言三个子页 5. 新增全部同学页面，展示班级全员信息与在线状态 6. 新增动态详情页面，支持查看完整评论与点赞头像 7. 抽离通用PostListBody组件，复用列表分页与交互逻辑 8. 优化班级列表页加载逻辑与图片预览交互 9. 新增评论删除、多图预览等细节交互功能
611 lines
18 KiB
Dart
611 lines
18 KiB
Dart
import 'package:cached_network_image/cached_network_image.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_screenutil/flutter_screenutil.dart';
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import 'package:new_learn/core/api/class/model.dart';
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import 'package:new_learn/core/components/image_preview_viewer.dart';
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import 'package:new_learn/core/components/user_circle_avatar.dart';
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import 'package:new_learn/core/utils/img_url.dart';
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/// ============================================================
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/// 【班级动态组件】由 class_update_view.dart 抽离的展示组件
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///
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/// PostCard（动态卡片，按 type 分发内容 + 相册 + 点赞评论栏）
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/// CardHeader / SubjectTag / ResolveProblemBox / AlbumDesc / AlbumGrid
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/// LikeCommentBar / MetaButton / CommentPreview / CommentInput
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///
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/// 原为 class_update_view.dart 内的私有组件，重命名去下划线后放到本文件。
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/// 头像复用 core/components/user_circle_avatar.dart。
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/// ============================================================
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/// 动态卡片（对标 SubjectCard + ResolveProblem/文字 + Album + LikeAndComment）
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class PostCard extends StatelessWidget {
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const PostCard({
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super.key,
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required this.post,
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required this.onLike,
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required this.onComment,
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this.showCommentComposer = true,
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});
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final UserPostDto post;
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final VoidCallback onLike;
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final ValueChanged<String> onComment;
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/// 是否显示卡片内嵌的评论预览 + 输入框（列表页 true；详情页由全量留言接管）
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final bool showCommentComposer;
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String get _avatar {
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final url = ImgUrl.build(post.avatar);
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return url.isEmpty
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? ImgUrl.build('/StaticResource/2026-04-03/fake-avatar.png')
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: url;
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}
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String get _name => post.userName.isEmpty ? '默认姓名' : post.userName;
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String get _subject => post.subjectName.isEmpty ? '数学' : post.subjectName;
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String get _time {
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final t = post.createTime;
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if (t.isEmpty) return '';
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final s = t.replaceFirst('T', ' ').replaceFirst('Z', '');
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return s.length > 16 ? s.substring(0, 16) : s;
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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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margin: EdgeInsets.only(bottom: 10.h),
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clipBehavior: Clip.antiAlias,
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decoration: BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.circular(15.r),
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),
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child: Stack(
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children: [
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Positioned(
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top: 0,
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left: 0,
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right: 0,
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height: 85.h,
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child: IgnorePointer(
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child: DecoratedBox(
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topRight,
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end: Alignment.bottomLeft,
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colors: [
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const Color(0xFFCEE9FF).withValues(alpha: 0.9),
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const Color(0xFFF6FBFF).withValues(alpha: 0.0),
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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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Padding(
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padding: EdgeInsets.symmetric(horizontal: 16.w, vertical: 21.h),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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CardHeader(
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avatar: _avatar,
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name: _name,
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subject: _subject,
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time: _time,
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),
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if (post.type == 1) ...[
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SizedBox(height: 5.h),
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ResolveProblemBox(desc: post.content),
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],
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if (post.type == 2 || post.type == 3) ...[
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SizedBox(height: 15.h),
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AlbumDesc(text: post.content),
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],
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if (post.urls.isNotEmpty) ...[
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SizedBox(height: 15.h),
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AlbumGrid(urls: post.urls.map(ImgUrl.build).toList()),
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],
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SizedBox(height: 10.h),
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LikeCommentBar(
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post: post,
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onLike: onLike,
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onComment: onComment,
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showComposer: showCommentComposer,
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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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/// 卡片标题：头像 + 姓名 + 学科标签 + 时间
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class CardHeader extends StatelessWidget {
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const CardHeader({
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super.key,
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required this.avatar,
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required this.name,
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required this.subject,
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required this.time,
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});
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final String avatar;
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final String name;
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final String subject;
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final String time;
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@override
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Widget build(BuildContext context) {
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return Row(
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children: [
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UserCircleAvatar(url: avatar, radius: 20.w),
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SizedBox(width: 12.w),
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Expanded(
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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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Flexible(
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child: Text(
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name,
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overflow: TextOverflow.ellipsis,
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style: const TextStyle(
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fontSize: 16,
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fontWeight: FontWeight.w600,
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color: Color(0xFF1D2B47),
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),
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),
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),
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SizedBox(width: 8.w),
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SubjectTag(subject: subject),
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],
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),
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SizedBox(height: 2.h),
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Text(
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time,
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style: const TextStyle(fontSize: 12, color: Color(0xFF495A7A)),
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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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/// 学科标签（对标 SubjectTag）
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class SubjectTag extends StatelessWidget {
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const SubjectTag({super.key, required this.subject});
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final String subject;
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static const Map<String, _SubjectColor> _map = {
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'数学': _SubjectColor(0xFF3D7DF5, 0xFFE5F0FF),
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'物理': _SubjectColor(0xFFA45CFF, 0xFFF5ECFF),
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'英语': _SubjectColor(0xFFE5A301, 0xFFFFF6E3),
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'化学': _SubjectColor(0xFF2DB985, 0xFFE5FAF3),
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};
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@override
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Widget build(BuildContext context) {
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final t = subject.trim();
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if (t.isEmpty) return const SizedBox.shrink();
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final c = _map[t] ?? const _SubjectColor(0xFF3D7DF5, 0xFFE5F0FF);
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return Container(
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padding: EdgeInsets.symmetric(horizontal: 7.w, vertical: 2.h),
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decoration: BoxDecoration(
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color: Color(c.bg),
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borderRadius: BorderRadius.circular(6.r),
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),
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child: Text(t, style: TextStyle(fontSize: 11, color: Color(c.fg))),
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);
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}
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}
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/// 攻克任务卡（对标 ResolveProblem）
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class ResolveProblemBox extends StatelessWidget {
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const ResolveProblemBox({super.key, required this.desc});
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final String desc;
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@override
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Widget build(BuildContext context) {
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return Container(
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width: double.infinity,
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padding: EdgeInsets.fromLTRB(19.w, 25.h, 19.w, 11.h),
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decoration: BoxDecoration(
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gradient: const LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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colors: [Color(0xFFEAF4FF), Color(0xFFFFFFFF)],
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),
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borderRadius: BorderRadius.circular(10.r),
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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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const Text(
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'刚刚攻克了',
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style: TextStyle(
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fontSize: 15,
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fontWeight: FontWeight.w900,
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color: Color(0xFF1D2B47),
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),
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),
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SizedBox(height: 3.h),
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Text.rich(
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TextSpan(
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children: [
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TextSpan(
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text: '｢$desc｣',
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style: const TextStyle(
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fontSize: 13,
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fontWeight: FontWeight.w500,
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color: Color(0xFF1D2B47),
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),
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),
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const TextSpan(
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text: ' 的所有高难考点！',
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style: TextStyle(
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fontSize: 13,
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fontWeight: FontWeight.w500,
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color: Color(0xFF45597E),
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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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/// 纯文字笔记（album-desc，最多 2 行）
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class AlbumDesc extends StatelessWidget {
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const AlbumDesc({super.key, required this.text});
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final String text;
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@override
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Widget build(BuildContext context) {
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return Text(
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text,
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maxLines: 2,
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overflow: TextOverflow.ellipsis,
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style: const TextStyle(
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fontSize: 15,
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fontWeight: FontWeight.w400,
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color: Color(0xFF495A7A),
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height: 42 / 30,
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),
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);
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}
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}
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/// 九宫格相册（最多展示 9 张，第 9 张叠加 +N）
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class AlbumGrid extends StatelessWidget {
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const AlbumGrid({super.key, required this.urls});
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final List<String> urls;
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@override
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Widget build(BuildContext context) {
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final displayed = urls.take(9).toList();
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return Wrap(
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spacing: 9.w,
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runSpacing: 9.h,
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children: [
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for (int i = 0; i < displayed.length; i++)
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GestureDetector(
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onTap: () => _preview(context, urls, i),
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child: _gridItem(displayed[i], i, urls.length),
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),
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],
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);
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}
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/// 点击相册图：进入整组大图预览，定位到点中的那张
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void _preview(BuildContext context, List<String> allUrls, int index) {
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ImagePreviewViewer.show(
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context,
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items: [
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for (final u in allUrls)
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PreviewImageItem(imageProvider: CachedNetworkImageProvider(u)),
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],
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initialIndex: index,
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);
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}
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Widget _gridItem(String url, int index, int total) {
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final more = total > 9 && index == 8 ? total - 9 : 0;
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return ClipRRect(
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borderRadius: BorderRadius.circular(8.r),
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child: SizedBox(
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width: 99.w,
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height: 99.h,
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child: Stack(
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fit: StackFit.expand,
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children: [
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CachedNetworkImage(
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imageUrl: url,
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fit: BoxFit.cover,
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errorWidget: (_, _, _) =>
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const ColoredBox(color: Color(0xFFF0F2F5)),
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),
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if (more > 0)
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ColoredBox(
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color: const Color(0x66000000),
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child: Center(
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child: Text(
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'+$more',
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style: const TextStyle(
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fontSize: 25,
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fontWeight: FontWeight.bold,
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color: Colors.white,
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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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/// 点赞 / 评论栏（对标 LikeAndComment）
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class LikeCommentBar extends StatelessWidget {
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const LikeCommentBar({
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super.key,
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required this.post,
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required this.onLike,
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required this.onComment,
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this.showComposer = true,
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});
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final UserPostDto post;
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final VoidCallback onLike;
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final ValueChanged<String> onComment;
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/// 是否显示评论预览 + 输入框（列表页 true；详情页 false，由全量留言列表接管）
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final bool showComposer;
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@override
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Widget build(BuildContext context) {
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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mainAxisAlignment: MainAxisAlignment.end,
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children: [
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MetaButton(
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icon: post.userLikeStatus
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? Icons.favorite
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: Icons.favorite_border,
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count: post.likeCount,
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active: post.userLikeStatus,
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onTap: onLike,
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),
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SizedBox(width: 8.w),
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MetaButton(icon: Icons.chat_bubble_outline, count: post.replyCount),
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],
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),
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if (showComposer) ...[
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if (post.commons.isNotEmpty) ...[
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SizedBox(height: 12.h),
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CommentPreview(post: post),
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],
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SizedBox(height: 12.h),
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CommentInput(onSubmit: onComment),
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],
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],
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);
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}
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}
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class MetaButton extends StatelessWidget {
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const MetaButton({
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super.key,
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required this.icon,
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required this.count,
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this.active = false,
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this.onTap,
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});
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final IconData icon;
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final int count;
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final bool active;
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final VoidCallback? onTap;
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@override
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Widget build(BuildContext context) {
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final color = active ? const Color(0xFF3D7DF5) : const Color(0xFFB4C2E0);
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return GestureDetector(
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onTap: onTap,
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child: Container(
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width: 51.w,
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height: 22.h,
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decoration: BoxDecoration(
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borderRadius: BorderRadius.circular(20.r),
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border: Border.all(
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color: const Color(0xFFB3C2E0).withValues(alpha: 0.3),
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),
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),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(icon, size: 13.w, color: color),
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SizedBox(width: 4.w),
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Text('$count', style: TextStyle(fontSize: 13, color: color)),
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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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/// 评论预览框（前 3 条 + 共 N 条）
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class CommentPreview extends StatelessWidget {
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const CommentPreview({super.key, required this.post});
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final UserPostDto post;
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@override
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Widget build(BuildContext context) {
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return Container(
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width: double.infinity,
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padding: EdgeInsets.symmetric(horizontal: 19.w, vertical: 12.h),
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decoration: BoxDecoration(
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color: const Color(0xFFF5F8FA),
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borderRadius: BorderRadius.circular(10.r),
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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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for (final c in post.commons.take(3))
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Padding(
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padding: EdgeInsets.only(bottom: 8.h),
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child: Text.rich(
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TextSpan(
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children: [
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TextSpan(
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text: '${c.userName}：',
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style: const TextStyle(
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fontSize: 13,
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fontWeight: FontWeight.w800,
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color: Color(0xFF1D2B47),
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),
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),
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TextSpan(
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text: c.content,
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style: const TextStyle(
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fontSize: 13,
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color: Color(0xFF495A7A),
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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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if (post.replyCount > 3)
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Row(
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children: [
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Text(
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'共${post.replyCount}条评论',
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style: const TextStyle(
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fontSize: 12,
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color: Color(0xFF687FAD),
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),
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),
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const Icon(
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Icons.chevron_right,
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size: 14,
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color: Color(0xFF687FAD),
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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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/// 评论输入行
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class CommentInput extends StatefulWidget {
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const CommentInput({super.key, required this.onSubmit});
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final ValueChanged<String> onSubmit;
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@override
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State<CommentInput> createState() => _CommentInputState();
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}
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class _CommentInputState extends State<CommentInput> {
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final TextEditingController _controller = TextEditingController();
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@override
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void dispose() {
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_controller.dispose();
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super.dispose();
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}
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void _send() {
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final text = _controller.text.trim();
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if (text.isEmpty) return;
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widget.onSubmit(text);
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_controller.clear();
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}
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@override
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Widget build(BuildContext context) {
|
||
return Row(
|
||
crossAxisAlignment: CrossAxisAlignment.end,
|
||
children: [
|
||
Expanded(
|
||
child: Container(
|
||
constraints: BoxConstraints(minHeight: 30.h),
|
||
padding: EdgeInsets.symmetric(horizontal: 12.w, vertical: 5.h),
|
||
decoration: BoxDecoration(
|
||
color: Colors.white,
|
||
border: Border.all(color: const Color(0xFFE3ECFF)),
|
||
borderRadius: BorderRadius.circular(10.r),
|
||
),
|
||
// multiline：键盘右下角为「换行」，可换行写多条评论
|
||
child: TextField(
|
||
controller: _controller,
|
||
style: const TextStyle(fontSize: 12, color: Color(0xFF1D2B47)),
|
||
keyboardType: TextInputType.multiline,
|
||
textInputAction: TextInputAction.newline,
|
||
minLines: 1,
|
||
maxLines: 4,
|
||
decoration: const InputDecoration(
|
||
isDense: true,
|
||
border: InputBorder.none,
|
||
hintText: '写下你的评论',
|
||
hintStyle: TextStyle(fontSize: 12, color: Color(0xFFB4C2E0)),
|
||
),
|
||
onSubmitted: (_) => _send(),
|
||
),
|
||
),
|
||
),
|
||
SizedBox(width: 10.w),
|
||
GestureDetector(
|
||
onTap: _send,
|
||
child: Container(
|
||
width: 51.w,
|
||
height: 30.h,
|
||
alignment: Alignment.center,
|
||
decoration: BoxDecoration(
|
||
gradient: const LinearGradient(
|
||
begin: Alignment.topCenter,
|
||
end: Alignment.bottomCenter,
|
||
colors: [
|
||
Color(0xFF8AD1FD),
|
||
Color(0xFF3C84FF),
|
||
Color(0xFF3D7DF5),
|
||
],
|
||
),
|
||
borderRadius: BorderRadius.circular(6.r),
|
||
),
|
||
child: const Text(
|
||
'发送',
|
||
style: TextStyle(fontSize: 13, color: Colors.white),
|
||
),
|
||
),
|
||
),
|
||
],
|
||
);
|
||
}
|
||
}
|
||
|
||
class _SubjectColor {
|
||
const _SubjectColor(this.fg, this.bg);
|
||
final int fg;
|
||
final int bg;
|
||
}
|