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import React, { useMemo, useRef, useEffect } from 'react'
import { createRoot } from 'react-dom/client'
import { createEditor } from 'slate'
import { Slate, Editable, withReact } from 'slate-react'
import { withHistory } from 'slate-history'
const ShadowDOM = () => {
const container = useRef(null)
useEffect(() => {
if (container.current.shadowRoot) return
// Create a shadow DOM
const outerShadowRoot = container.current.attachShadow({ mode: 'open' })
const host = document.createElement('div')
outerShadowRoot.appendChild(host)
// Create a nested shadow DOM
const innerShadowRoot = host.attachShadow({ mode: 'open' })
const reactRoot = document.createElement('div')
innerShadowRoot.appendChild(reactRoot)
// Render the editor within the nested shadow DOM
const root = createRoot(reactRoot)
root.render(<ShadowEditor />)
})
return <div ref={container} data-cy="outer-shadow-root" />
}
const ShadowEditor = () => {
const editor = useMemo(() => withHistory(withReact(createEditor())), [])
return (
<Slate editor={editor} initialValue={initialValue}>
<Editable placeholder="Enter some plain text..." />
</Slate>
)
}
const initialValue = [
{
type: 'paragraph',
children: [{ text: 'This Editor is rendered within a nested Shadow DOM.' }],
},
]
export default ShadowDOM
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