feat(P4): precompute移植+app.js sources双向回填+回归1003/1003+验收体积/文件/data.json
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import React, { useRef, useState, useEffect, useMemo } from 'react';
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import './ListPicker.css';
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/**
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* Aurora Admin ListPicker(React)
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* 对齐 组件7.txt ListPicker 规范:下拉列表、多选、分组、搜索、全选、标签
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*
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* props:
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* - value / defaultValue : 选中 value 数组
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* - options : 扁平 [{value,label}] 或 分组 [{label, children}]
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* - filterable
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* - placeholder
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* - onChange(keys)
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*/
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export default function ListPicker({
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value,
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defaultValue = [],
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options = [],
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filterable = true,
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placeholder = '请选择',
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onChange
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}) {
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const rootRef = useRef(null);
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const [inner, setInner] = useState(defaultValue);
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const current = value !== undefined ? value : inner;
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const [open, setOpen] = useState(false);
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const [query, setQuery] = useState('');
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const isGrouped = options.length && options[0] && options[0].children;
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const flat = isGrouped ? options.flatMap(g => g.children) : options;
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const labelMap = Object.fromEntries(flat.map(o => [o.value, o.label]));
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const flatVisible = useMemo(() => flat.filter(o => o.label.includes(query)), [flat, query]);
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const visibleGroups = useMemo(() => {
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if (!isGrouped) return [{ children: flatVisible }];
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return options
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.map(g => ({ label: g.label, children: g.children.filter(o => o.label.includes(query)) }))
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.filter(g => g.children.length);
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}, [options, flatVisible, query]);
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const commit = (next) => { if (value === undefined) setInner(next); onChange && onChange(next); };
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const toggleOpt = (o) => { if (o.disabled) return; commit(current.includes(o.value) ? current.filter(x => x !== o.value) : [...current, o.value]); };
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const remove = (v) => commit(current.filter(x => x !== v));
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const selectAll = () => commit([...new Set([...current, ...flatVisible.map(o => o.value)])]);
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useEffect(() => {
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const onDoc = (e) => { if (rootRef.current && !rootRef.current.contains(e.target)) { setOpen(false); setQuery(''); } };
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document.addEventListener('click', onDoc, true);
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return () => document.removeEventListener('click', onDoc, true);
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}, []);
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return (
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<div className="aa-listpicker" ref={rootRef}>
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<div className={`aa-listpicker-trigger${open ? ' is-open' : ''}`} onClick={() => { setOpen(!open); if (open) setQuery(''); }}>
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{current.length ? current.map(v => (
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<span key={v} className="aa-listpicker-tag">{labelMap[v] || v}<span className="x" onClick={(e) => { e.stopPropagation(); remove(v); }}>×</span></span>
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)) : <span className="aa-listpicker-placeholder">{placeholder}</span>}
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<span className="aa-listpicker-caret">▾</span>
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</div>
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{open && (
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<div className="aa-listpicker-panel">
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{filterable && (
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<div className="aa-listpicker-search">
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<input value={query} onChange={(e) => setQuery(e.target.value)} placeholder="搜索" />
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</div>
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)}
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<div className="aa-listpicker-selectall" onClick={selectAll}>全选</div>
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{visibleGroups.map((g, gi) => (
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<div key={gi}>
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{g.label && <div className="aa-listpicker-group-label">{g.label}</div>}
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{g.children.map(o => (
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<div
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key={o.value}
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className={`aa-listpicker-option${current.includes(o.value) ? ' is-checked' : ''}${o.disabled ? ' is-disabled' : ''}`}
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onClick={() => toggleOpt(o)}
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>
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<span className="box">{current.includes(o.value) ? '✓' : ''}</span>{o.label}
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</div>
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))}
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</div>
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))}
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{!flatVisible.length && <div className="aa-listpicker-empty">无匹配项</div>}
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</div>
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)}
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</div>
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);
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}
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/*
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用法示例:
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import ListPicker from './ListPicker';
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const options = [{ label: '前端', children: [{ value: 'vue', label: 'Vue' }, { value: 'react', label: 'React' }] }];
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<ListPicker options={options} defaultValue={['vue']} onChange={setKeys} />
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*/
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