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// TO USE THIS: | |
import { useEffect, useState } from 'react' | |
import { FormInstance } from 'antd/lib/form' | |
type Props<T> = { | |
form: FormInstance<T> | |
id: string // some unique identifier that matches whatever you're editing | |
} | |
export const useFormState = <T>({ type, form }: Props<T>) => { | |
const [state, setState] = useState<T | null>(null) | |
useEffect(() => { | |
const handleBeforeunload = () => { | |
update<T>(type, form.getFieldsValue()) | |
} | |
window.addEventListener('beforeunload', handleBeforeunload) | |
return () => { | |
window.removeEventListener('beforeunload', handleBeforeunload) | |
} | |
}, [type, form]) | |
const update = <T>(type: FormType, body: T) => { | |
console.log(`updating localStorage.forms/${type}`, body) | |
window.localStorage.setItem(`forms/${type}`, JSON.stringify(body)) | |
} | |
const clear = () => { | |
console.log(`clearing localStorage.forms/${type}`) | |
window.localStorage.removeItem(`forms/${type}`) | |
} | |
useEffect(() => { | |
const storage = window.localStorage.getItem(`forms/${type}`) | |
console.log(`getting localStorage.forms/${type}`, storage) | |
if (!storage) return | |
setState(JSON.parse(storage)) | |
}, [type]) | |
useEffect(() => { | |
if (state) { | |
form.setFieldsValue(state as any) | |
} | |
}, [form, state]) | |
return { state, update, clear } | |
} |
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