Skip to main content

Action items

You can specify items in the list as actions and define what happens after they are triggered. This is useful for extending functionality, such as building a 'creatable' autocomplete feature.

import { useState } from 'react';
import { useCombobox, autocomplete } from '@szhsin/react-autocomplete';
import FRUITS from '../../data/fruits';

type Item = { value: string; creatable?: boolean };

const ActionItems = () => {
  const [value, setValue] = useState<string>();
  const [selected, setSelected] = useState<Item>();

  const [fruits, setFruit] = useState(FRUITS);
  const items: Item[] = fruits
    .filter((fruit) => fruit.toLowerCase().includes((value || '').toLowerCase()))
    .map((fruit) => ({ value: fruit }));
  // If the value does not exist in the list of items, add a creatable action to the end.
  if (value && !items.find((item) => !item.creatable && item.value === value)) {
    items.push({ value, creatable: true });
  }

  const {
    getFocusCaptureProps,
    getLabelProps,
    getInputProps,
    getClearProps,
    getToggleProps,
    getListProps,
    getItemProps,
    isItemSelected,
    open,
    focusIndex,
    isInputEmpty
  } = useCombobox({
    items,
    getItemValue: (item) => item.value,
    isEqual: (a, b) => a?.value === b?.value,
    // Specify how to determine if an item is an action,
    isItemAction: (item) => !!item.creatable,
    // and what happens after the action is triggered.
    onAction: (item) => {
      if (item.creatable) {
        setSelected({ value: item.value });
        setFruit([item.value, ...fruits]);
      }
    },
    value,
    onChange: setValue,
    selected,
    onSelectChange: setSelected,
    feature: autocomplete({ select: true })
  });

  return (
    <div>
      <label {...getLabelProps()} {...getFocusCaptureProps()}>
        Fruit
      </label>

      <div>
        <input placeholder="Select or create..." {...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,
          padding: 0
        }}
      >
        {items.length ? (
          items.map((item, index) => (
            <li
              {...getItemProps({ item, index })}
              key={item.value}
              style={{
                background: focusIndex === index ? '#ddd' : 'none',
                textDecoration: isItemSelected(item) ? 'underline' : 'none'
              }}
            >
              {item.creatable ? `Create "${item.value}"` : item.value}
            </li>
          ))
        ) : (
          <li>No options</li>
        )}
      </ul>
    </div>
  );
};

export default ActionItems;