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Supercomplete

The supercomplete feature supports everything provided by autocomplete, along with inline text completion.

(the default setting) The text entered in the input field is not restricted to the items in the dropdown list.
The allowed text in the input field is restricted to the items in the dropdown list.
import { useState } from 'react';
import { useCombobox, supercomplete } from '@szhsin/react-autocomplete';
import STATES from '../../data/states';

const filterItems = (value?: string) =>
  value ? STATES.filter((item) => item.toLowerCase().startsWith(value.toLowerCase())) : STATES;

const Supercomplete = () => {
  const [value, setValue] = useState<string>();
  const [selected, setSelected] = useState<string>();
  const items = filterItems(value);

  const {
    getLabelProps,
    getInputProps,
    getClearProps,
    getToggleProps,
    getListProps,
    getItemProps,
    open,
    focusIndex,
    isInputEmpty
  } = useCombobox({
    items,
    value,
    onChange: setValue,
    selected,
    onSelectChange: setSelected,
    feature: supercomplete({
      // The `onRequestItem` event will be triggered with the updated input value.
      // You should compute the item for inline text completion using the same filtering logic,
      // and invoke the `res` function to complete.
      // If no item matches for inline completion, do not call the `res` function.
      onRequestItem: ({ value: newValue }, res) => {
        const items = filterItems(newValue);
        if (items.length > 0) res({ index: 0, item: items[0] });
      },

      // The `select` option controls autocomplete in free or select mode
      select: false // or true
      // Other options: deselectOnClear, deselectOnChange, closeOnSelect
    })
  });

  return (
    <div>
      <label {...getLabelProps()}>State</label>
      <div>
        <input placeholder="Select or type..." {...getInputProps()} />
        {!isInputEmpty && <button {...getClearProps()}>X</button>}
        <button {...getToggleProps()}>{open ? '↑' : '↓'}</button>
      </div>

      <ul
        {...getListProps()}
        style={{
          display: open ? 'block' : 'none',
          position: 'absolute',
          listStyle: 'none',
          color: '#000',
          background: '#fff',
          overflow: 'auto',
          maxHeight: 300,
          margin: 0,
          padding: 0
        }}
      >
        {items.length ? (
          items.map((item, index) => (
            <li
              style={{
                background: focusIndex === index ? '#ddd' : 'none',
                textDecoration: selected === item ? 'underline' : 'none'
              }}
              key={item}
              {...getItemProps({ item, index })}
            >
              {item}
            </li>
          ))
        ) : (
          <li>No results</li>
        )}
      </ul>
    </div>
  );
};

export default Supercomplete;