Janady13/llms-txt-hub / packages/design-system/components/shadcn/form.tsx

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Field	Recorded value
Source type	GitHub source
Original record	Janady13/llms-txt-hub / packages/design-system/components/shadcn/form.tsx
Date	Not specified in source
Repository	Janady13/llms-txt-hub
Revision	e0f4bf978d4df168369c7601d9c5f5ea89e84377
Branch	main
Path or archive member	packages/design-system/components/shadcn/form.tsx
Original SHA-256	07c77d655c53fa0a8283dca7d84f8c3d151161884c6fdb9d25b83f04cc4e3019
Git blob SHA	81ee8542e0d15237825592c57af1c885c980104e
Reading-copy SHA-256	07c77d655c53fa0a8283dca7d84f8c3d151161884c6fdb9d25b83f04cc4e3019

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'use client'

import type * as LabelPrimitive from '@radix-ui/react-label'
import { Slot } from '@radix-ui/react-slot'
import * as React from 'react'
import {
  Controller,
  type ControllerProps,
  type FieldPath,
  type FieldValues,
  FormProvider,
  useFormContext,
  useFormState
} from 'react-hook-form'

import { cn } from '../../lib/utils'
import { Label } from './label'

const Form = FormProvider

type FormFieldContextValue<
  TFieldValues extends FieldValues = FieldValues,
  TName extends FieldPath<TFieldValues> = FieldPath<TFieldValues>
> = {
  name: TName
}

const FormFieldContext = React.createContext<FormFieldContextValue>({} as FormFieldContextValue)

const FormField = <
  TFieldValues extends FieldValues = FieldValues,
  TName extends FieldPath<TFieldValues> = FieldPath<TFieldValues>
>({
  ...props
}: ControllerProps<TFieldValues, TName>) => {
  return (
    <FormFieldContext.Provider value={{ name: props.name }}>
      <Controller {...props} />
    </FormFieldContext.Provider>
  )
}

const useFormField = () => {
  const fieldContext = React.useContext(FormFieldContext)
  const itemContext = React.useContext(FormItemContext)
  const { getFieldState } = useFormContext()
  const formState = useFormState({ name: fieldContext.name })
  const fieldState = getFieldState(fieldContext.name, formState)

  if (!fieldContext) {
    throw new Error('useFormField should be used within <FormField>')
  }

  const { id } = itemContext

  return {
    id,
    name: fieldContext.name,
    formItemId: `${id}-form-item`,
    formDescriptionId: `${id}-form-item-description`,
    formMessageId: `${id}-form-item-message`,
    ...fieldState
  }
}

type FormItemContextValue = {
  id: string
}

const FormItemContext = React.createContext<FormItemContextValue>({} as FormItemContextValue)

function FormItem({ className, ...props }: React.ComponentProps<'div'>) {
  const id = React.useId()

  return (
    <FormItemContext.Provider value={{ id }}>
      <div data-slot="form-item" className={cn('grid gap-2', className)} {...props} />
    </FormItemContext.Provider>
  )
}

function FormLabel({ className, ...props }: React.ComponentProps<typeof LabelPrimitive.Root>) {
  const { error, formItemId } = useFormField()

  return (
    <Label
      data-slot="form-label"
      data-error={!!error}
      className={cn('data-[error=true]:text-destructive-foreground', className)}
      htmlFor={formItemId}
      {...props}
    />
  )
}

function FormControl({ ...props }: React.ComponentProps<typeof Slot>) {
  const { error, formItemId, formDescriptionId, formMessageId } = useFormField()

  return (
    <Slot
      data-slot="form-control"
      id={formItemId}
      aria-describedby={!error ? `${formDescriptionId}` : `${formDescriptionId} ${formMessageId}`}
      aria-invalid={!!error}
      {...props}
    />
  )
}

function FormDescription({ className, ...props }: React.ComponentProps<'p'>) {
  const { formDescriptionId } = useFormField()

  return (
    <p
      data-slot="form-description"
      id={formDescriptionId}
      className={cn('text-muted-foreground text-sm', className)}
      {...props}
    />
  )
}

function FormMessage({ className, ...props }: React.ComponentProps<'p'>) {
  const { error, formMessageId } = useFormField()
  const body = error ? String(error?.message) : props.children

  if (!body) {
    return null
  }

  return (
    <p
      data-slot="form-message"
      id={formMessageId}
      className={cn('text-destructive-foreground text-sm', className)}
      {...props}
    >
      {body}
    </p>
  )
}

export {
  useFormField,
  Form,
  FormItem,
  FormLabel,
  FormControl,
  FormDescription,
  FormMessage,
  FormField
}