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Component

Searchable Select

Combobox select with a real search input that filters options.

  • Component
  • React
  • TSX
  • Tailwind CSS
  • MIT

What it does

Capabilities

  • Semantic HTML
  • ARIA
  • Associated labels

Preview

Live component

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devsnips.site/library/react/components/selects/searchable-select/
fluid · no fixed width 100%
No dependencies Responsive · Light/dark · Focus-visible

Install

Add to your project

terminal
npx devsnips add React/Components/Selects/searchable-select
registry path: React/Components/Selects/searchable-select

Source

Implementation

code.tsx 
import type { KeyboardEvent, RefObject } from "react";
import { useEffect, useId, useRef, useState } from "react";

export type SelectSize = "sm" | "md" | "lg";

export interface SearchableOption {
  value: string;
  label: string;
  disabled?: boolean;
}

export interface SearchableSelectProps {
  label?: string;
  options: SearchableOption[];
  value?: string;
  defaultValue?: string;
  onChange?: (value: string, option: SearchableOption) => void;
  size?: SelectSize;
  placeholder?: string;
  searchPlaceholder?: string;
  disabled?: boolean;
  id?: string;
  name?: string;
  className?: string;
}

function cx(...parts: Array<string | false | null | undefined>): string {
  return parts.filter(Boolean).join(" ");
}

const SIZES: Record<SelectSize, string> = {
  sm: "h-8 text-[13px] [&_svg]:size-[14px]",
  md: "h-9 text-sm [&_svg]:size-4",
  lg: "h-11 text-sm [&_svg]:size-[18px]",
};

function ChevronDown({ className }: { className?: string }) {
  return (
    <svg className={className} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={1.75} strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
      <path d="m6 9 6 6 6-6" />
    </svg>
  );
}

function CheckIcon({ className }: { className?: string }) {
  return (
    <svg className={className} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
      <path d="M20 6 9 17l-5-5" />
    </svg>
  );
}

function SearchIcon({ className }: { className?: string }) {
  return (
    <svg className={className} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth={1.75} strokeLinecap="round" strokeLinejoin="round" aria-hidden="true">
      <circle cx="11" cy="11" r="7" />
      <path d="m21 21-4.3-4.3" />
    </svg>
  );
}

/**
 * Custom searchable combobox. Trigger opens a panel with a search INPUT at the
 * top and a filtered list of options below. Typing filters options by label
 * (case-insensitive substring). Keyboard: ArrowDown/Up moves the active option
 * among FILTERED options, Enter selects, Escape closes + clears search,
 * Home/End jump to first/last. Empty-results state ("No matches"). Selected
 * option is shown in the trigger with a check. Outside-click closes.
 *
 * ARIA: trigger `aria-haspopup="listbox" aria-expanded aria-controls`; the
 * search input is `role="combobox"` with `aria-controls` (listbox) +
 * `aria-activedescendant`; listbox `role="listbox"`, options `role="option"
 * aria-selected`. Controlled (value/onChange) + uncontrolled (defaultValue).
 */
export function SearchableSelect({
  label = "Search",
  options,
  value,
  defaultValue = "",
  onChange,
  size = "md",
  placeholder = "Search…",
  searchPlaceholder = "Search options",
  disabled,
  id,
  name,
  className,
}: SearchableSelectProps) {
  const generatedId = useId();
  const triggerId = id ?? `searchable-select-${generatedId}`;
  const listboxId = `${triggerId}-listbox`;
  const comboboxId = `${triggerId}-combobox`;

  const [internalValue, setInternalValue] = useState(defaultValue);
  const selectedValue = value ?? internalValue;
  const selected = options.find((o) => o.value === selectedValue) ?? null;

  const [open, setOpen] = useState(false);
  const [query, setQuery] = useState("");
  const [activeIndex, setActiveIndex] = useState(0);
  const triggerRef = useRef<HTMLButtonElement>(null);
  const inputRef = useRef<HTMLInputElement>(null);
  const listboxRef = useRef<HTMLDivElement>(null);

  const normalized = query.trim().toLowerCase();
  const filtered = normalized === ""
    ? options
    : options.filter((o) => o.label.toLowerCase().includes(normalized));

  useEffect(() => {
    if (!open) return;
    const enabled = filtered.findIndex((o) => !o.disabled);
    setActiveIndex(enabled === -1 ? 0 : enabled);
  }, [open, query, filtered]);

  function openPanel() {
    setOpen(true);
    setQuery("");
  }

  function closePanel() {
    setOpen(false);
    setQuery("");
    triggerRef.current?.focus();
  }

  function choose(option: SearchableOption) {
    if (option.disabled) return;
    if (value === undefined) setInternalValue(option.value);
    onChange?.(option.value, option);
    closePanel();
  }

  function moveActive(step: number) {
    setActiveIndex((cur) => {
      const n = filtered.length;
      if (n === 0) return cur;
      let next = cur;
      for (let i = 0; i < n; i++) {
        next = (next + step + n) % n;
        if (!filtered[next].disabled) return next;
      }
      return cur;
    });
  }

  function jumpTo(edge: "first" | "last") {
    const n = filtered.length;
    if (n === 0) return;
    const range = edge === "first" ? filtered : [...filtered].reverse();
    const hit = range.findIndex((o) => !o.disabled);
    if (hit === -1) return;
    const idx = edge === "first" ? hit : n - 1 - hit;
    setActiveIndex(Math.max(0, Math.min(n - 1, idx)));
  }

  function onInputKeyDown(event: KeyboardEvent<HTMLInputElement>) {
    switch (event.key) {
      case "ArrowDown":
        event.preventDefault();
        moveActive(1);
        break;
      case "ArrowUp":
        event.preventDefault();
        moveActive(-1);
        break;
      case "Home":
        event.preventDefault();
        jumpTo("first");
        break;
      case "End":
        event.preventDefault();
        jumpTo("last");
        break;
      case "Enter":
        event.preventDefault();
        if (filtered[activeIndex]) choose(filtered[activeIndex]);
        break;
      case "Escape":
        event.preventDefault();
        if (query !== "") setQuery("");
        else closePanel();
        break;
      case "Tab":
        if (open) closePanel();
        break;
    }
  }

  const activeId = filtered[activeIndex] ? `${triggerId}-opt-${activeIndex}` : undefined;

  return (
    <div className="w-full">
      <label htmlFor={triggerId} className="mb-2 block text-[13px] font-medium leading-5 text-[var(--ds-color-foreground)]">
        {label}
      </label>
      <div className="relative">
        {name ? <input type="hidden" name={name} value={selectedValue} disabled={disabled} readOnly /> : null}
        <button
          ref={triggerRef}
          id={triggerId}
          type="button"
          disabled={disabled}
          aria-haspopup="listbox"
          aria-expanded={open}
          aria-controls={open ? listboxId : undefined}
          onClick={() => (open ? closePanel() : openPanel())}
          className={cx(
            "inline-flex w-full items-center justify-between gap-2 rounded-[var(--ds-radius-sm)] border bg-[var(--ds-color-input)] px-3 text-left text-[var(--ds-color-foreground)] transition-colors duration-150 ease-out hover:bg-[var(--ds-color-input-hover,var(--ds-color-input))] focus:bg-[var(--ds-color-input-focus,var(--ds-color-input))] focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-[var(--ds-color-focus-ring)] disabled:pointer-events-none disabled:bg-[var(--ds-color-muted)] disabled:text-[var(--ds-color-muted-foreground)] disabled:opacity-60 motion-reduce:transition-none",
            "border-[var(--ds-color-border)] focus:border-[var(--ds-color-border-strong)]",
            SIZES[size],
            className,
          )}
        >
          <span className={cx("flex-1 truncate", !selected && "text-[var(--ds-color-muted-foreground)]")}>
            {selected ? selected.label : placeholder}
          </span>
          {selected ? (
            <CheckIcon className="shrink-0 text-[var(--ds-color-primary)]" />
          ) : null}
          <ChevronDown className={cx("shrink-0 text-[var(--ds-color-muted-foreground)] transition-transform duration-150 motion-reduce:transition-none", open && "rotate-180")} />
        </button>
        {open ? (
          <SearchPanel
            ref={listboxRef}
            listboxId={listboxId}
            comboboxId={comboboxId}
            labelledby={triggerId}
            inputRef={inputRef}
            searchPlaceholder={searchPlaceholder}
            query={query}
            onQuery={setQuery}
            onInputKeyDown={onInputKeyDown}
            filtered={filtered}
            activeIndex={activeIndex}
            selectedValue={selectedValue}
            triggerId={triggerId}
            activeId={activeId}
            onChoose={choose}
            onHover={setActiveIndex}
            onOutside={closePanel}
          />
        ) : null}
      </div>
    </div>
  );
}

export default SearchableSelect;

function SearchPanel({
  ref,
  listboxId,
  comboboxId,
  labelledby,
  inputRef,
  searchPlaceholder,
  query,
  onQuery,
  onInputKeyDown,
  filtered,
  activeIndex,
  selectedValue,
  triggerId,
  activeId,
  onChoose,
  onHover,
  onOutside,
}: {
  ref: RefObject<HTMLDivElement>;
  listboxId: string;
  comboboxId: string;
  labelledby: string;
  inputRef: RefObject<HTMLInputElement>;
  searchPlaceholder: string;
  query: string;
  onQuery: (q: string) => void;
  onInputKeyDown: (e: KeyboardEvent<HTMLInputElement>) => void;
  filtered: SearchableOption[];
  activeIndex: number;
  selectedValue: string;
  triggerId: string;
  activeId: string | undefined;
  onChoose: (o: SearchableOption) => void;
  onHover: (i: number) => void;
  onOutside: () => void;
}) {
  useEffect(() => {
    function onDown(e: MouseEvent) {
      if (ref.current && !ref.current.contains(e.target as Node)) onOutside();
    }
    document.addEventListener("mousedown", onDown);
    return () => document.removeEventListener("mousedown", onDown);
  }, [onOutside, ref]);

  useEffect(() => {
    inputRef.current?.focus();
  }, [inputRef]);

  useEffect(() => {
    const el = ref.current?.querySelector(`[data-i="${activeIndex}"]`);
    el?.scrollIntoView({ block: "nearest" });
  }, [activeIndex, ref]);

  return (
    <div
      ref={ref}
      className="absolute z-20 mt-1.5 w-full overflow-hidden rounded-[var(--ds-radius-md)] border border-[var(--ds-color-border)] bg-[var(--ds-color-surface-elevated)] shadow-[var(--ds-shadow-md)]"
    >
      <div className="flex items-center gap-2 border-b border-[var(--ds-color-border-subtle)] px-2.5 py-2">
        <SearchIcon className="shrink-0 text-[var(--ds-color-muted-foreground)]" />
        <input
          ref={inputRef}
          id={comboboxId}
          type="text"
          role="combobox"
          aria-expanded={true}
          aria-haspopup="listbox"
          aria-controls={listboxId}
          aria-activedescendant={activeId}
          aria-autocomplete="list"
          value={query}
          onChange={(e) => onQuery(e.target.value)}
          onKeyDown={onInputKeyDown}
          placeholder={searchPlaceholder}
          className="w-full bg-transparent text-sm text-[var(--ds-color-foreground)] placeholder:text-[var(--ds-color-muted-foreground)] focus-visible:outline-none"
        />
      </div>
      <div
        id={listboxId}
        role="listbox"
        aria-labelledby={labelledby}
        className="max-h-60 overflow-auto p-1"
      >
        {filtered.length === 0 ? (
          <div className="px-2.5 py-2 text-[13px] text-[var(--ds-color-muted-foreground)]">No matches</div>
        ) : (
          filtered.map((option, i) => {
            const isSelected = option.value === selectedValue;
            return (
              <button
                key={option.value}
                id={`${triggerId}-opt-${i}`}
                type="button"
                data-i={i}
                role="option"
                aria-selected={isSelected}
                aria-disabled={option.disabled || undefined}
                disabled={option.disabled}
                onMouseEnter={() => onHover(i)}
                onClick={() => onChoose(option)}
                className={cx(
                  "flex w-full items-center justify-between gap-2 rounded-[var(--ds-radius-sm)] px-2.5 py-1.5 text-left text-[13px] text-[var(--ds-color-foreground)] transition-colors motion-reduce:transition-none focus-visible:outline-2 focus-visible:outline-offset-2 focus-visible:outline-[var(--ds-color-focus-ring)]",
                  i === activeIndex ? "bg-[var(--ds-color-surface-hover)]" : "",
                  isSelected ? "font-medium" : "",
                  option.disabled ? "cursor-not-allowed text-[var(--ds-color-muted-foreground)] opacity-60" : "",
                )}
              >
                <span className="truncate">{option.label}</span>
                {isSelected ? (
                  <CheckIcon className="shrink-0 text-[var(--ds-color-primary)]" />
                ) : null}
              </button>
            );
          })
        )}
      </div>
    </div>
  );
}
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devsnips://components/selects/searchable-select
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Page:
https://devsnips.site/library/react/components/selects/searchable-select/

Install: npx devsnips add
React/Components/Selects/searchable-select

This is the Searchable Select — Combobox select with a real search input that filters options.

Use this DevSnips resource as the starting point for my project.
Adapt it to my project's stack and conventions, fix any issues,
and make it production-ready while preserving its intended design
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