cal.pub0.org/apps/web/components/booking/TimezoneDropdown.tsx

import { Globe } from "@calcom/ui/components/icon";

import { timeZone as localStorageTimeZone } from "@lib/clock";

import TimeOptions from "@components/booking/TimeOptions";

export function TimezoneDropdown({
  onChangeTimeZone,
}: {
  onChangeTimeZone: (newTimeZone: string) => void;
  timeZone?: string;
}) {
  const handleSelectTimeZone = (newTimeZone: string) => {
    onChangeTimeZone(newTimeZone);
    localStorageTimeZone(newTimeZone);
  };

  return (
    <>
      <div className="dark:focus-within:bg-darkgray-200  dark:hover:bg-darkgray-200 !mt-3 flex w-full max-w-[20rem] items-center rounded-[4px] px-1 text-sm font-medium focus-within:bg-gray-200 hover:bg-gray-100 lg:max-w-[12rem] [&_p]:focus-within:text-gray-900 dark:[&_p]:focus-within:text-white [&_svg]:focus-within:text-gray-900 dark:[&_svg]:focus-within:text-white">
        <Globe className="dark:text-darkgray-600 flex h-4 w-4 text-gray-600 ltr:mr-2 rtl:ml-2" />
        <TimeOptions onSelectTimeZone={handleSelectTimeZone} />
      </div>
    </>
  );
}