generated from dellevin/template
567 lines
20 KiB
Dart
567 lines
20 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:lpinyin/lpinyin.dart';
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import 'package:provider/provider.dart';
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import 'package:scrollable_positioned_list/scrollable_positioned_list.dart';
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import '../../models/data_models.dart';
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import '../../providers/app_provider.dart';
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import '../../utils/toast_util.dart';
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import '../../widgets/person_avatar.dart';
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import 'person_detail_page.dart';
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import 'person_form_page.dart';
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/// 人物列表页
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class PersonListPage extends StatefulWidget {
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const PersonListPage({super.key});
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@override
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State<PersonListPage> createState() => _PersonListPageState();
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}
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class _PersonListPageState extends State<PersonListPage> {
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String _searchKeyword = '';
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String? _occupationFilter; // 职业筛选
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final TextEditingController _searchCtrl = TextEditingController();
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// 字母索引
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final _itemScrollController = ItemScrollController();
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final _itemPositionsListener = ItemPositionsListener.create();
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final _activeLetterNotifier = ValueNotifier<String>('');
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final Map<String, int> _letterFirstIndex = {};
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List<_FlatItem> _flatItems = [];
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List<Person> _lastFiltered = const [];
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// 拼音缓存：人名 -> 首字母；人名 -> 拼音（用于组内排序）
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static final Map<String, String> _letterCache = {};
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static final Map<String, String> _pinyinCache = {};
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static const List<String> _allLetters = [
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'A','B','C','D','E','F','G','H','I','J','K','L','M',
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'N','O','P','Q','R','S','T','U','V','W','X','Y','Z','#'
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];
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@override
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void initState() {
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super.initState();
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_itemPositionsListener.itemPositions.addListener(_onPositionsChanged);
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}
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@override
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void dispose() {
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_itemPositionsListener.itemPositions.removeListener(_onPositionsChanged);
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_activeLetterNotifier.dispose();
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_searchCtrl.dispose();
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super.dispose();
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}
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/// 取人名首字母（A-Z），非字母开头返回 '#'。结果缓存。
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String _firstLetter(String name) {
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return _letterCache.putIfAbsent(name, () => _firstLetterUncached(name));
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}
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/// 取人名拼音（用于组内排序）。结果缓存。
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String _pinyinOf(String name) {
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return _pinyinCache.putIfAbsent(name, () => PinyinHelper.getFirstWordPinyin(name));
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}
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String _firstLetterUncached(String name) {
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final s = name.trim();
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if (s.isEmpty) return '#';
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final first = s.substring(0, 1);
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if (RegExp(r'[A-Za-z]').hasMatch(first)) return first.toUpperCase();
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final py = PinyinHelper.getFirstWordPinyin(first);
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if (py.isEmpty) return '#';
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final c = py.substring(0, 1).toUpperCase();
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return RegExp(r'[A-Z]').hasMatch(c) ? c : '#';
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}
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/// 把 filtered 列表按首字母分组，扁平化为 header + person。
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/// 仅在 filtered 引用或长度变化时重算，避免每次 build 重复计算。
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void _buildFlatItems(List<Person> filtered) {
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if (identical(filtered, _lastFiltered) && filtered.length == _lastFiltered.length) return;
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_lastFiltered = filtered;
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_flatItems = [];
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_letterFirstIndex.clear();
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if (filtered.isEmpty) {
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_activeLetterNotifier.value = '';
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return;
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}
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final groups = <String, List<Person>>{};
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for (final p in filtered) {
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final letter = _firstLetter(p.name);
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groups.putIfAbsent(letter, () => []).add(p);
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}
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for (final g in groups.values) {
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g.sort((a, b) => _pinyinOf(a.name).compareTo(_pinyinOf(b.name)));
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}
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final keys = groups.keys.toList()
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..sort((a, b) {
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if (a == '#') return 1;
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if (b == '#') return -1;
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return a.compareTo(b);
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});
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for (final k in keys) {
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_letterFirstIndex[k] = _flatItems.length;
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_flatItems.add(_FlatItem.letter(k));
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for (final p in groups[k]!) {
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_flatItems.add(_FlatItem.person(p));
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}
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}
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if (_activeLetterNotifier.value.isEmpty || !_letterFirstIndex.containsKey(_activeLetterNotifier.value)) {
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_activeLetterNotifier.value = keys.first;
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}
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}
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void _onPositionsChanged() {
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final positions = _itemPositionsListener.itemPositions.value;
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if (positions.isEmpty) return;
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// 取屏幕顶部第一个可见 item 的 index，反查它属于哪个字母
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final firstVisible = positions.reduce((a, b) => a.itemLeadingEdge < b.itemLeadingEdge ? a : b);
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final idx = firstVisible.index;
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String current = '';
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for (final entry in _letterFirstIndex.entries) {
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if (entry.value <= idx) {
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current = entry.key;
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} else {
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break;
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}
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}
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if (current.isNotEmpty && current != _activeLetterNotifier.value) {
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_activeLetterNotifier.value = current;
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}
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}
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void _jumpToLetter(String letter) {
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final index = _letterFirstIndex[letter];
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if (index == null) return;
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if (!_itemScrollController.isAttached) return;
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_itemScrollController.scrollTo(
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index: index,
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duration: const Duration(milliseconds: 500),
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curve: Curves.easeOutCubic,
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);
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}
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Widget _buildIndexBar(ColorScheme colors) {
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final present = _letterFirstIndex.keys.toSet();
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return Positioned(
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right: 2,
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top: 0,
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bottom: 0,
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child: LayoutBuilder(
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builder: (context, constraints) {
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final maxH = constraints.maxHeight;
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const barPadding = 4.0;
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final available = maxH - barPadding * 2;
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final itemH = (available / _allLetters.length).clamp(8.0, 16.0);
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return Padding(
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padding: const EdgeInsets.symmetric(vertical: barPadding),
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child: ValueListenableBuilder<String>(
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valueListenable: _activeLetterNotifier,
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builder: (context, activeLetter, _) {
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return Column(
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mainAxisSize: MainAxisSize.min,
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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for (final letter in _allLetters)
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GestureDetector(
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behavior: HitTestBehavior.opaque,
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onTap: () {
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if (!present.contains(letter)) return;
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_activeLetterNotifier.value = letter;
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_jumpToLetter(letter);
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},
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child: SizedBox(
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height: itemH,
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width: itemH + 8,
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child: AnimatedDefaultTextStyle(
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duration: const Duration(milliseconds: 150),
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curve: Curves.easeOut,
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style: TextStyle(
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fontSize: activeLetter == letter ? itemH * 1.1 : itemH * 0.65,
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fontWeight: activeLetter == letter ? FontWeight.w800 : FontWeight.w500,
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color: present.contains(letter)
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? (activeLetter == letter ? colors.primary : colors.onSurface.withValues(alpha: 0.7))
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: colors.onSurface.withValues(alpha: 0.25),
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),
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child: Text(letter, textAlign: TextAlign.center),
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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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);
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}
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List<Person> _filterPeople(List<Person> people) {
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var result = people;
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if (_occupationFilter != null) {
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result = result.where((p) => p.occupation.contains(_occupationFilter)).toList();
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}
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if (_searchKeyword.isNotEmpty) {
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final kw = _searchKeyword.toLowerCase();
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result = result.where((p) {
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if (p.name.toLowerCase().contains(kw)) return true;
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if (p.alternateNames.any((n) => n.toLowerCase().contains(kw))) return true;
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return false;
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}).toList();
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}
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return result;
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}
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@override
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Widget build(BuildContext context) {
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final colors = Theme.of(context).colorScheme;
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final people = context.watch<AppProvider>().people;
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final filtered = _filterPeople(people);
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_buildFlatItems(filtered);
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return Scaffold(
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backgroundColor: colors.surface,
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appBar: AppBar(
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title: const Text('人物'),
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actions: [
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IconButton(
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icon: const Icon(Icons.refresh),
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tooltip: '扫描作品自动关联',
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onPressed: () => _refreshRelations(),
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),
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IconButton(
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icon: const Icon(Icons.add_outlined),
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tooltip: '添加人物',
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onPressed: () => _navigateToForm(),
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),
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],
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),
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body: Column(
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children: [
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// 搜索栏
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_buildSearchBar(colors),
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// 职业筛选
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_buildOccupationFilter(colors, people),
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// 列表
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Expanded(
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child: filtered.isEmpty
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? _buildEmptyState(colors)
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: Stack(
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children: [
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ScrollablePositionedList.builder(
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itemScrollController: _itemScrollController,
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itemPositionsListener: _itemPositionsListener,
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padding: const EdgeInsets.only(left: 16, right: 28, top: 8, bottom: 8),
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itemCount: _flatItems.length,
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itemBuilder: (context, i) {
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final item = _flatItems[i];
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if (item.isHeader) {
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return Container(
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height: 32,
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alignment: Alignment.centerLeft,
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padding: const EdgeInsets.only(top: 10, bottom: 4),
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child: Text(
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item.letter!,
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style: TextStyle(
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fontSize: 13,
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fontWeight: FontWeight.w700,
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color: colors.onSurface.withValues(alpha: 0.4),
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),
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),
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);
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}
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return _buildPersonItem(item.person!, colors);
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},
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),
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_buildIndexBar(colors),
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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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Widget _buildSearchBar(ColorScheme colors) {
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return Padding(
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padding: const EdgeInsets.fromLTRB(16, 8, 16, 4),
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child: Container(
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height: 44,
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decoration: BoxDecoration(
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color: colors.surfaceContainerHigh,
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borderRadius: BorderRadius.circular(22),
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),
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child: Row(
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children: [
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const SizedBox(width: 16),
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Icon(Icons.search, size: 20, color: colors.onSurface.withValues(alpha: 0.3)),
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const SizedBox(width: 10),
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Expanded(
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child: TextField(
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controller: _searchCtrl,
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style: TextStyle(fontSize: 14, color: colors.onSurface),
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cursorColor: colors.primary,
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decoration: InputDecoration(
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hintText: '搜索人物名称或别名',
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hintStyle: TextStyle(fontSize: 14, color: colors.onSurface.withValues(alpha: 0.3)),
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isDense: true,
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contentPadding: const EdgeInsets.symmetric(vertical: 12),
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border: InputBorder.none,
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enabledBorder: InputBorder.none,
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focusedBorder: InputBorder.none,
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disabledBorder: InputBorder.none,
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errorBorder: InputBorder.none,
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focusedErrorBorder: InputBorder.none,
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filled: false,
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),
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onChanged: (v) => setState(() => _searchKeyword = v),
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),
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),
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if (_searchKeyword.isNotEmpty)
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GestureDetector(
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onTap: () {
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_searchCtrl.clear();
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setState(() => _searchKeyword = '');
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FocusManager.instance.primaryFocus?.unfocus();
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},
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child: Container(
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margin: const EdgeInsets.only(right: 10),
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padding: const EdgeInsets.all(5),
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decoration: BoxDecoration(
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color: colors.onSurface.withValues(alpha: 0.08),
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shape: BoxShape.circle,
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),
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child: Icon(Icons.close, size: 14, color: colors.onSurface.withValues(alpha: 0.4)),
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),
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)
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else
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const SizedBox(width: 16),
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],
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),
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),
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);
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}
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Widget _buildOccupationFilter(ColorScheme colors, List<Person> people) {
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// 收集所有职业及其数量
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final occupationCounts = <String, int>{};
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for (final p in people) {
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for (final occ in p.occupation) {
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occupationCounts[occ] = (occupationCounts[occ] ?? 0) + 1;
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}
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}
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if (occupationCounts.isEmpty) return const SizedBox.shrink();
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final sorted = occupationCounts.keys.toList()..sort();
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return SizedBox(
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height: 36,
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child: ListView(
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scrollDirection: Axis.horizontal,
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padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 2),
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children: [
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_buildFilterChip('全部', null, people.length, colors),
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for (final occ in sorted)
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_buildFilterChip(occ, occ, occupationCounts[occ] ?? 0, colors),
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],
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),
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);
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}
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Widget _buildFilterChip(String label, String? value, int count, ColorScheme colors) {
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final selected = _occupationFilter == value;
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return Padding(
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padding: const EdgeInsets.only(right: 8),
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child: GestureDetector(
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onTap: () => setState(() => _occupationFilter = value),
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child: Container(
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padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
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decoration: BoxDecoration(
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color: selected ? colors.primary : colors.surfaceContainerHighest,
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borderRadius: BorderRadius.circular(16),
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),
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child: Row(
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mainAxisSize: MainAxisSize.min,
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children: [
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Text(
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label,
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style: TextStyle(
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fontSize: 12,
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fontWeight: selected ? FontWeight.w500 : FontWeight.normal,
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color: selected ? colors.onPrimary : colors.onSurface.withValues(alpha: 0.5),
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),
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),
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const SizedBox(width: 4),
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Text(
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'$count',
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style: TextStyle(
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fontSize: 11,
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color: selected ? colors.onPrimary.withValues(alpha: 0.7) : colors.onSurface.withValues(alpha: 0.3),
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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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Widget _buildPersonItem(Person person, ColorScheme colors) {
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return InkWell(
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onTap: () => _navigateToDetail(person),
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borderRadius: BorderRadius.circular(10),
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child: Container(
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margin: const EdgeInsets.symmetric(vertical: 4),
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padding: const EdgeInsets.all(12),
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decoration: BoxDecoration(
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color: colors.surfaceContainerLow,
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borderRadius: BorderRadius.circular(10),
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),
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child: Row(
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children: [
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PersonAvatar(
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photoPath: person.photoPath,
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name: person.name,
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size: 48,
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fontSize: 20,
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),
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const SizedBox(width: 12),
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// 信息
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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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Text(
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person.name,
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style: TextStyle(fontSize: 15, fontWeight: FontWeight.w500, color: colors.onSurface),
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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),
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if (person.occupation.isNotEmpty) ...[
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const SizedBox(height: 2),
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Text(
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person.occupation.join(' / '),
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style: TextStyle(fontSize: 12, color: colors.onSurface.withValues(alpha: 0.4)),
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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),
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],
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if (person.alternateNames.isNotEmpty) ...[
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const SizedBox(height: 2),
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Text(
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'又名：${person.alternateNames.join('、')}',
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style: TextStyle(fontSize: 12, color: colors.onSurface.withValues(alpha: 0.3)),
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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),
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],
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],
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),
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),
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Icon(Icons.chevron_right, size: 18, color: colors.onSurface.withValues(alpha: 0.2)),
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],
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),
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),
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);
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}
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Widget _buildEmptyState(ColorScheme colors) {
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return Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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Icon(Icons.people_outline, size: 64, color: colors.onSurface.withValues(alpha: 0.15)),
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const SizedBox(height: 16),
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Text(
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_searchKeyword.isNotEmpty ? '未找到匹配的人物' : '暂无人物',
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style: TextStyle(fontSize: 15, color: colors.onSurface.withValues(alpha: 0.3)),
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),
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if (_searchKeyword.isEmpty) ...[
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const SizedBox(height: 16),
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FilledButton.tonal(
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onPressed: () => _navigateToForm(),
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child: const Text('添加人物'),
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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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void _navigateToDetail(Person person) {
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Navigator.push(
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context,
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MaterialPageRoute(
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builder: (context) => PersonDetailPage(person: person),
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),
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);
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}
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Future<void> _refreshRelations() async {
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final provider = context.read<AppProvider>();
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// 显示加载弹窗
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showDialog(
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context: context,
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barrierDismissible: false,
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builder: (ctx) => PopScope(
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canPop: false,
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child: Center(
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child: Container(
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padding: const EdgeInsets.all(20),
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decoration: BoxDecoration(
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color: Theme.of(ctx).colorScheme.surface,
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borderRadius: BorderRadius.circular(12),
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),
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child: const SizedBox(
|
||
width: 28,
|
||
height: 28,
|
||
child: CircularProgressIndicator(strokeWidth: 3),
|
||
),
|
||
),
|
||
),
|
||
),
|
||
);
|
||
try {
|
||
final result = await provider.refreshPersonRelations();
|
||
if (!mounted) return;
|
||
Navigator.pop(context); // 关闭加载弹窗
|
||
if (result.newPersons == 0 && result.newRelations == 0 && result.merged == 0) {
|
||
ToastUtil.show(context, '已是最新，无新增关联');
|
||
} else {
|
||
final parts = <String>[];
|
||
if (result.merged > 0) parts.add('合并 ${result.merged} 个重复人物');
|
||
if (result.newPersons > 0) parts.add('新增 ${result.newPersons} 个人物');
|
||
if (result.newRelations > 0) parts.add('${result.newRelations} 条关联');
|
||
ToastUtil.show(context, parts.join('，'));
|
||
}
|
||
} catch (e) {
|
||
if (!mounted) return;
|
||
Navigator.pop(context);
|
||
ToastUtil.show(context, '刷新失败：$e');
|
||
}
|
||
}
|
||
|
||
void _navigateToForm([Person? person]) {
|
||
Navigator.push(
|
||
context,
|
||
MaterialPageRoute(
|
||
builder: (context) => PersonFormPage(person: person),
|
||
),
|
||
).then((_) {
|
||
if (mounted) context.read<AppProvider>().loadPeople();
|
||
});
|
||
}
|
||
}
|
||
|
||
class _FlatItem {
|
||
final String? letter;
|
||
final Person? person;
|
||
bool get isHeader => letter != null;
|
||
|
||
_FlatItem.letter(this.letter) : person = null;
|
||
_FlatItem.person(this.person) : letter = null;
|
||
}
|