ダイアログを開き、最初に宛先へフォーカスが移ることを確認します。Tab キーで権限のトリガーに移動し、矢印キーと Enter キーでロールを選択します。Escape キーを押すと、ネイティブコンポーネントの現在のフォーカスコンテキストに応じて、開いているポップアップまたはダイアログが閉じます。ダイアログを閉じた後、フォーカスが共有トリガーに戻ることを確認します。
import React, { useState } from 'react';
import { Dialog, DialogBackdrop, DialogPanel, DialogTitle, Description, Listbox, ListboxButton, ListboxOptions, ListboxOption, Switch, Field, Label } from '@headlessui/react';
import './style.css';
const roles = ['Can view', 'Can comment', 'Can edit'];
export default function App() {
const [open,setOpen]=useState(false),[role,setRole]=useState(roles[0]),[publicLink,setPublicLink]=useState(false),[email,setEmail]=useState(''),[error,setError]=useState(''),[notice,setNotice]=useState('');
const [people,setPeople]=useState([{email:'[email protected]',role:'Can edit'}]);
const start=()=>{setEmail('');setError('');setRole(roles[0]);setOpen(true)};
const submit=e=>{e.preventDefault();if(!/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(email)){setError('Enter a complete email address.');return;}if(people.some(p=>p.email===email)){setError('This person already appears in the access list.');return;}setPeople([...people,{email,role}]);setOpen(false);setNotice('Invitation added to this local example only. No email was sent.');};
return <main className='sharing-shell'>
<header><div><span className='eyebrow'>HEADLESS UI / CUSTOM SURFACE</span><h1>Quarterly brief</h1><p className='muted'>Research · Updated today</p></div><button className='primary' onClick={start}>Share document</button></header>
<div className='document-grid'><article className='paper'><span className='tag'>WORKING DOCUMENT</span><h2>Make the next decision clearer.</h2><p>Three research priorities for the coming quarter, shared with the people who need to review them.</p><div className='rule'/><h3>01 / Understand the handoff</h3><p>Compare where context is lost between research notes and the next product decision.</p><h3>02 / Review access deliberately</h3><p>Keep editing rights separate from the ability to read a document.</p></article>
<aside className='access'><h2>People with access</h2><p className='muted'>The list below is local demonstration state.</p>{people.map((p,i)=><div className='person' key={p.email}><span className='avatar'>{i===0?'AK':'+'}</span><div><strong>{p.email}</strong><small>{p.role}</small></div></div>)}<Field className='link-setting'><Label>Public link</Label><Switch checked={publicLink} onChange={setPublicLink} className='switch'><span /></Switch></Field><p className='link-detail'>{publicLink?'Anyone with the example link could view this document. This changes only the local preview.':'Restricted to the named people in this example.'}</p><p role='status' className='notice'>{notice}</p></aside></div>
<Dialog open={open} onClose={()=>setOpen(false)} className='dialog-root'><DialogBackdrop className='backdrop'/><div className='dialog-position'><DialogPanel className='dialog-panel'><DialogTitle as='h2'>Share quarterly brief</DialogTitle><Description className='muted'>Choose one recipient and a permission. Closing discards this invitation draft.</Description><form noValidate onSubmit={submit}><label className='field-label' htmlFor='recipient'>Recipient email</label><input id='recipient' data-autofocus type='email' value={email} onChange={e=>{setEmail(e.target.value);setError('')}} aria-invalid={!!error} aria-describedby={error?'email-error':undefined} placeholder='[email protected]'/>{error&&<p id='email-error' role='alert' className='error'>{error}</p>}<Listbox value={role} onChange={setRole}><Label className='field-label'>Permission</Label><ListboxButton className='role-button'>{role}<span aria-hidden='true'>⌄</span></ListboxButton><ListboxOptions anchor='bottom' className='role-options'>{roles.map(value=><ListboxOption key={value} value={value} className='role-option'><span>{value}</span><span className='selected' aria-hidden='true'>✓</span></ListboxOption>)}</ListboxOptions></Listbox><p className='muted permission-help'>{role==='Can edit'?'May change document content in this example.':role==='Can comment'?'May add comments without editing content.':'May read the document without changing it.'}</p><div className='dialog-actions'><button type='button' onClick={()=>setOpen(false)}>Cancel</button><button className='primary' type='submit'>Add invitation</button></div></form></DialogPanel></div></Dialog>
<footer>Native Dialog, Listbox, and Switch behavior. Original CSS below supplies all visual values; Headless UI does not ship this palette.</footer>
</main>;
}
スタイルとコンポーネントのファイル一式は上記にあります。選択した Vite のリリースでサポートされる Node バージョンが必要です。デモでは同じネイティブコンポーネントパッケージをローカルにバンドルしています。
テキスト
# Terminal
npm create vite@latest sharing-demo -- --template react
cd sharing-demo
npm install
npm install @headlessui/[email protected]
# Save the complete examples as src/App.jsx and src/style.css.
# Replace src/main.jsx with:
import React from 'react';
import {createRoot} from 'react-dom/client';
import App from './App';
createRoot(document.getElementById('root')).render(<App/>);
# Terminal
npm run dev
