| import React from 'react'; |
| import ReactDOM from 'react-dom/client'; |
| import { useForm } from 'react-hook-form'; |
| import App from './app'; |
|
|
| const FRAME_CONTENT = ` |
| <style> |
| label {display: block; margin-bottom: .5em} |
| form {margin-bottom: 2em} |
| input {margin: 0 1em} |
| </style> |
| |
| <div id='inner-root'> |
| Loading content... |
| </div> |
| `; |
|
|
| const FRAME_STYLE = { |
| width: '640px', |
| height: '480px', |
| background: 'white', |
| }; |
|
|
| const CrossFrameForm: React.FC = () => { |
| const ref = React.useRef<HTMLIFrameElement>(null); |
|
|
| function renderFormInFrame() { |
| const rootElement = |
| ref.current!.contentDocument!.getElementById('inner-root'); |
| const root = ReactDOM.createRoot(rootElement); |
| root.render(<FrameForm />); |
| } |
|
|
| return ( |
| <iframe |
| ref={ref} |
| style={FRAME_STYLE} |
| srcDoc={FRAME_CONTENT} |
| onLoad={renderFormInFrame} |
| /> |
| ); |
| }; |
|
|
| const FrameForm: React.FC = () => { |
| const { register, watch } = useForm(); |
|
|
| const value = watch(); |
|
|
| return ( |
| <> |
| <form> |
| <label> |
| Free text |
| <input type="text" {...register('input', { required: true })} /> |
| </label> |
| |
| <label> |
| <input |
| type="radio" |
| value="a" |
| {...register('radio', { required: true })} |
| /> |
| Choice A |
| </label> |
| |
| <label> |
| <input |
| type="radio" |
| value="b" |
| {...register('radio', { required: true })} |
| /> |
| Choice B |
| </label> |
| </form> |
| |
| <label> |
| Form value |
| <pre>{JSON.stringify(value)}</pre> |
| </label> |
| </> |
| ); |
| }; |
|
|
| export default CrossFrameForm; |
|
|
