react-test/docs/data/joy/components/autocomplete/AutocompleteHint.js

import * as React from 'react';
import PropTypes from 'prop-types';
import Autocomplete from '@mui/joy/Autocomplete';
import { Typography, styled } from '@mui/joy';

const StyledDiv = styled('div')({
  flex: 1, // stretch to fill the root slot
  minWidth: 0, // won't push end decorator out of the autocomplete
  display: 'flex',
  alignItems: 'center',
  flexWrap: 'wrap',
  position: 'relative',
});

function Wrapper({ children, hint, ...props }) {
  return (
    <StyledDiv {...props}>
      <Typography
        sx={{
          position: 'absolute',
          opacity: 0.6,
          overflow: 'hidden', // Hide overflow
          whiteSpace: 'nowrap', // Prevent text wrapping
          maxWidth: '100%', // Ensure the hint doesn't exceed container width
        }}
      >
        {hint}
      </Typography>
      {children}
    </StyledDiv>
  );
}

Wrapper.propTypes = {
  children: PropTypes.element.isRequired,
  hint: PropTypes.string.isRequired,
};

export default function AutocompleteHint() {
  const hint = React.useRef('');
  const [inputValue, setInputValue] = React.useState('');
  return (
    <Autocomplete
      onInputChange={(event, value) => {
        if (!value) {
          hint.current = '';
        }
        const matchingOption = top100Films.find((option) =>
          option.label.startsWith(value),
        );
        if (value && matchingOption) {
          hint.current = matchingOption.label;
        } else {
          hint.current = '';
        }
        setInputValue(value);
      }}
      onKeyDown={(event) => {
        if (event.key === 'Tab') {
          if (hint.current) {
            setInputValue(hint.current);
            event.preventDefault();
          }
        }
      }}
      onClose={() => {
        hint.current = '';
      }}
      inputValue={inputValue}
      filterOptions={(options, state) => {
        const displayOptions = options.filter((option) =>
          option.label
            .toLowerCase()
            .trim()
            .includes(state.inputValue.toLowerCase().trim()),
        );

        const matchingOption = options.find((option) =>
          option.label.startsWith(state.inputValue),
        );
        if (displayOptions.length > 0 && state.inputValue && matchingOption) {
          hint.current = matchingOption.label;
        } else {
          hint.current = '';
        }
        return displayOptions;
      }}
      id="combo-box-hint-demo"
      options={top100Films}
      slots={{
        wrapper: Wrapper,
      }}
      slotProps={{
        wrapper: {
          hint: hint.current,
        },
        input: {
          sx: {
            zIndex: 1,
          },
        },
      }}
      sx={{ width: 300 }}
    />
  );
}

// Top 100 films as rated by IMDb users. http://www.imdb.com/chart/top
const top100Films = [
  { label: 'The Shawshank Redemption', year: 1994 },
  { label: 'The Godfather', year: 1972 },
  { label: 'The Godfather: Part II', year: 1974 },
  { label: 'The Dark Knight', year: 2008 },
  { label: '12 Angry Men', year: 1957 },
  { label: "Schindler's List", year: 1993 },
  { label: 'Pulp Fiction', year: 1994 },
  {
    label: 'The Lord of the Rings: The Return of the King',
    year: 2003,
  },
  { label: 'The Good, the Bad and the Ugly', year: 1966 },
  { label: 'Fight Club', year: 1999 },
  {
    label: 'The Lord of the Rings: The Fellowship of the Ring',
    year: 2001,
  },
  {
    label: 'Star Wars: Episode V - The Empire Strikes Back',
    year: 1980,
  },
  { label: 'Forrest Gump', year: 1994 },
  { label: 'Inception', year: 2010 },
  {
    label: 'The Lord of the Rings: The Two Towers',
    year: 2002,
  },
  { label: "One Flew Over the Cuckoo's Nest", year: 1975 },
  { label: 'Goodfellas', year: 1990 },
  { label: 'The Matrix', year: 1999 },
  { label: 'Seven Samurai', year: 1954 },
  {
    label: 'Star Wars: Episode IV - A New Hope',
    year: 1977,
  },
  { label: 'City of God', year: 2002 },
  { label: 'Se7en', year: 1995 },
  { label: 'The Silence of the Lambs', year: 1991 },
  { label: "It's a Wonderful Life", year: 1946 },
  { label: 'Life Is Beautiful', year: 1997 },
  { label: 'The Usual Suspects', year: 1995 },
  { label: 'Léon: The Professional', year: 1994 },
  { label: 'Spirited Away', year: 2001 },
  { label: 'Saving Private Ryan', year: 1998 },
  { label: 'Once Upon a Time in the West', year: 1968 },
  { label: 'American History X', year: 1998 },
  { label: 'Interstellar', year: 2014 },
  { label: 'Casablanca', year: 1942 },
  { label: 'City Lights', year: 1931 },
  { label: 'Psycho', year: 1960 },
  { label: 'The Green Mile', year: 1999 },
  { label: 'The Intouchables', year: 2011 },
  { label: 'Modern Times', year: 1936 },
  { label: 'Raiders of the Lost Ark', year: 1981 },
  { label: 'Rear Window', year: 1954 },
  { label: 'The Pianist', year: 2002 },
  { label: 'The Departed', year: 2006 },
  { label: 'Terminator 2: Judgment Day', year: 1991 },
  { label: 'Back to the Future', year: 1985 },
  { label: 'Whiplash', year: 2014 },
  { label: 'Gladiator', year: 2000 },
  { label: 'Memento', year: 2000 },
  { label: 'The Prestige', year: 2006 },
  { label: 'The Lion King', year: 1994 },
  { label: 'Apocalypse Now', year: 1979 },
  { label: 'Alien', year: 1979 },
  { label: 'Sunset Boulevard', year: 1950 },
  {
    label: 'Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb',
    year: 1964,
  },
  { label: 'The Great Dictator', year: 1940 },
  { label: 'Cinema Paradiso', year: 1988 },
  { label: 'The Lives of Others', year: 2006 },
  { label: 'Grave of the Fireflies', year: 1988 },
  { label: 'Paths of Glory', year: 1957 },
  { label: 'Django Unchained', year: 2012 },
  { label: 'The Shining', year: 1980 },
  { label: 'WALL·E', year: 2008 },
  { label: 'American Beauty', year: 1999 },
  { label: 'The Dark Knight Rises', year: 2012 },
  { label: 'Princess Mononoke', year: 1997 },
  { label: 'Aliens', year: 1986 },
  { label: 'Oldboy', year: 2003 },
  { label: 'Once Upon a Time in America', year: 1984 },
  { label: 'Witness for the Prosecution', year: 1957 },
  { label: 'Das Boot', year: 1981 },
  { label: 'Citizen Kane', year: 1941 },
  { label: 'North by Northwest', year: 1959 },
  { label: 'Vertigo', year: 1958 },
  {
    label: 'Star Wars: Episode VI - Return of the Jedi',
    year: 1983,
  },
  { label: 'Reservoir Dogs', year: 1992 },
  { label: 'Braveheart', year: 1995 },
  { label: 'M', year: 1931 },
  { label: 'Requiem for a Dream', year: 2000 },
  { label: 'Amélie', year: 2001 },
  { label: 'A Clockwork Orange', year: 1971 },
  { label: 'Like Stars on Earth', year: 2007 },
  { label: 'Taxi Driver', year: 1976 },
  { label: 'Lawrence of Arabia', year: 1962 },
  { label: 'Double Indemnity', year: 1944 },
  {
    label: 'Eternal Sunshine of the Spotless Mind',
    year: 2004,
  },
  { label: 'Amadeus', year: 1984 },
  { label: 'To Kill a Mockingbird', year: 1962 },
  { label: 'Toy Story 3', year: 2010 },
  { label: 'Logan', year: 2017 },
  { label: 'Full Metal Jacket', year: 1987 },
  { label: 'Dangal', year: 2016 },
  { label: 'The Sting', year: 1973 },
  { label: '2001: A Space Odyssey', year: 1968 },
  { label: "Singin' in the Rain", year: 1952 },
  { label: 'Toy Story', year: 1995 },
  { label: 'Bicycle Thieves', year: 1948 },
  { label: 'The Kid', year: 1921 },
  { label: 'Inglourious Basterds', year: 2009 },
  { label: 'Snatch', year: 2000 },
  { label: '3 Idiots', year: 2009 },
  { label: 'Monty Python and the Holy Grail', year: 1975 },
];