LibreChat/client/src/components/ui/Dropdown.jsx

import React from 'react';
import CheckMark from '../svg/CheckMark';
import { Listbox } from '@headlessui/react';
import { cn } from '~/utils/';

function Dropdown({ value, onChange, options, className, containerClassName }) {
  return (
    <div className={cn('flex items-center justify-center gap-2', containerClassName)}>
      <div className="relative w-full">
        <Listbox
          value={value}
          onChange={onChange}
        >
          <Listbox.Button
            className={cn(
              'relative flex w-full cursor-default flex-col rounded-md border border-black/10 bg-white py-2 pl-3 pr-10 text-left focus:border-green-600 focus:outline-none focus:ring-1 focus:ring-green-600 dark:border-white/20 dark:bg-gray-800 sm:text-sm',
              className || ''
            )}
          >
            <span className="inline-flex w-full truncate">
              <span className="flex h-6 items-center gap-1 truncate text-sm text-black dark:text-white">
                {value}
              </span>
            </span>
            <span className="pointer-events-none absolute inset-y-0 right-0 flex items-center pr-2">
              <svg
                stroke="currentColor"
                fill="none"
                strokeWidth="2"
                viewBox="0 0 24 24"
                strokeLinecap="round"
                strokeLinejoin="round"
                className="h-4 w-4  text-gray-400"
                height="1em"
                width="1em"
                xmlns="http://www.w3.org/2000/svg"
              >
                <polyline points="6 9 12 15 18 9"></polyline>
              </svg>
            </span>
          </Listbox.Button>
          <Listbox.Options className="absolute z-50 mt-2 max-h-60 w-full overflow-auto rounded bg-white text-base text-xs ring-1 ring-black/10 focus:outline-none dark:bg-gray-800 dark:ring-white/20 dark:last:border-0 md:w-[100%] ">
            {options.map((item, i) => (
              <Listbox.Option
                key={i}
                value={item}
                className="group relative flex h-[42px] cursor-pointer select-none items-center overflow-hidden border-b border-black/10 pl-3 pr-9 text-gray-900 last:border-0 hover:bg-[#ECECF1] dark:border-white/20 dark:text-white dark:hover:bg-gray-700"
              >
                <span className="flex items-center gap-1.5 truncate">
                  <span
                    className={cn(
                      'flex h-6 items-center gap-1 text-gray-800 dark:text-gray-100',
                      value === item ? 'font-semibold' : ''
                    )}
                  >
                    {item}
                  </span>
                  {value === item && (
                    <span className="absolute inset-y-0 right-0 flex items-center pr-3 text-gray-800 dark:text-gray-100">
                      <CheckMark />
                    </span>
                  )}
                </span>
              </Listbox.Option>
            ))}
          </Listbox.Options>
        </Listbox>
      </div>
    </div>
  );
}

export default Dropdown;