rhf-combobox-field

1'use client';
2 
3import type { Lens } from '@hookform/lenses';
4import { Command as CommandPrimitive } from 'cmdk';
5import { Check, Loader2, Search, X } from 'lucide-react';
6import * as React from 'react';
7import { useController } from 'react-hook-form';
8import { Badge } from '@/components/ui/badge';
9import { Command, CommandGroup, CommandItem, CommandList } from '@/components/ui/command';
10import { Field, FieldDescription, FieldError, FieldLabel } from '@/components/ui/field';
11import { cn } from '@/lib/utils';
12 
13const DEBOUNCE_TIME = 300;
14 
15export interface ComboboxOption {
16  value: string;
17  label: string;
18  sublabel?: string;
19}
20 
21type ComboboxFieldVariant = 'boxed' | 'ghost';
22type ComboboxFieldSize = 'sm' | 'default';
23 
24type ComboboxFieldCommonProps = {
25  options?: ComboboxOption[];
26  onSearch?: (query: string) => Promise<ComboboxOption[]>;
27  maxResults?: number;
28  variant?: ComboboxFieldVariant;
29  size?: ComboboxFieldSize;
30  label?: string;
31  description?: string;
32  placeholder?: string;
33  emptyText?: string;
34  debounceMs?: number;
35};
36 
37export type ComboboxFieldProps =
38  | (ComboboxFieldCommonProps & {
39      multiple?: false;
40      lens: Lens<string>;
41      defaultSelected?: ComboboxOption;
42    })
43  | (ComboboxFieldCommonProps & {
44      multiple: true;
45      lens: Lens<string[]>;
46      defaultSelected?: ComboboxOption[];
47    });
48 
49const shellVariants: Record<ComboboxFieldVariant, string> = {
50  boxed:
51    'rounded-md border border-input bg-transparent shadow-xs focus-within:border-ring focus-within:ring-ring/50 focus-within:ring-[3px] aria-invalid:border-destructive aria-invalid:ring-destructive/20',
52  ghost: 'rounded-md border border-transparent bg-transparent',
53};
54 
55const shellSizes: Record<ComboboxFieldSize, string> = {
56  default: 'min-h-9 gap-1.5 px-2 py-1 text-sm',
57  sm: 'min-h-7 gap-1 px-1.5 py-0.5 text-xs',
58};
59 
60function toArray(value: string | string[] | undefined | null): string[] {
61  if (Array.isArray(value)) return value;
62  if (value) return [value];
63  return [];
64}
65 
66export function ComboboxField(props: ComboboxFieldProps) {
67  const {
68    multiple = false,
69    options,
70    onSearch,
71    maxResults,
72    variant = 'boxed',
73    size = 'default',
74    label,
75    description,
76    placeholder,
77    emptyText = 'No results',
78    debounceMs = DEBOUNCE_TIME,
79    defaultSelected,
80  } = props;
81 
82  // The discriminated union ties the lens type to `multiple`; values are normalised through
83// … truncated