ComboBox

ComboBoxes combine a text entry with a picker menu, allowing users to filter longer lists to only the selections matching a query.

Example#

<ComboBox label="Favorite Animal">
  <Item key="red panda">Red Panda</Item>
  <Item key="cat">Cat</Item>
  <Item key="dog">Dog</Item>
  <Item key="aardvark">Aardvark</Item>
  <Item key="kangaroo">Kangaroo</Item>
  <Item key="snake">Snake</Item>
</ComboBox>

<ComboBox label="Favorite Animal">
  <Item key="red panda">Red Panda</Item>
  <Item key="cat">Cat</Item>
  <Item key="dog">Dog</Item>
  <Item key="aardvark">Aardvark</Item>
  <Item key="kangaroo">Kangaroo</Item>
  <Item key="snake">Snake</Item>
</ComboBox>

<ComboBox label="Favorite Animal">
  <Item key="red panda">
    Red Panda
  </Item>
  <Item key="cat">
    Cat
  </Item>
  <Item key="dog">
    Dog
  </Item>
  <Item key="aardvark">
    Aardvark
  </Item>
  <Item key="kangaroo">
    Kangaroo
  </Item>
  <Item key="snake">
    Snake
  </Item>
</ComboBox>

Content#

ComboBox follows the Collection Components API, accepting both static and dynamic collections. Similar to Picker, ComboBox accepts <Item> elements as children, each with a key prop. Basic usage of ComboBox, seen in the example above, shows multiple options populated with a string. Static collections, as in this example, can be used when the full list of options is known ahead of time.

Dynamic collections, as shown below, can be used when the options come from an external data source such as an API call, or update over time. Providing the data in this way allows ComboBox to automatically cache the rendering of each item, which dramatically improves performance.

As seen below, an iterable list of options is passed to the ComboBox using the defaultItems prop. Each item accepts a key prop, which is passed to the onSelectionChange handler to identify the selected item. Alternatively, if the item objects contain an id property, as shown in the example below, then this is used automatically and a key prop is not required. See the Events section for more detail on selection.

function Example() {
  let options = [
    {id: 1, name: 'Aerospace'},
    {id: 2, name: 'Mechanical'},
    {id: 3, name: 'Civil'},
    {id: 4, name: 'Biomedical'},
    {id: 5, name: 'Nuclear'},
    {id: 6, name: 'Industrial'},
    {id: 7, name: 'Chemical'},
    {id: 8, name: 'Agricultural'},
    {id: 9, name: 'Electrical'}
  ];
  let [majorId, setMajorId] = React.useState();

  return (
    <>
      <p>Topic id: {majorId}</p>
      <ComboBox
        label="Pick an engineering major"
        defaultItems={options}
        onSelectionChange={setMajorId}>
        {item => <Item>{item.name}</Item>}
      </ComboBox>
    </>
  );
}

function Example() {
  let options = [
    {id: 1, name: 'Aerospace'},
    {id: 2, name: 'Mechanical'},
    {id: 3, name: 'Civil'},
    {id: 4, name: 'Biomedical'},
    {id: 5, name: 'Nuclear'},
    {id: 6, name: 'Industrial'},
    {id: 7, name: 'Chemical'},
    {id: 8, name: 'Agricultural'},
    {id: 9, name: 'Electrical'}
  ];
  let [majorId, setMajorId] = React.useState();

  return (
    <>
      <p>Topic id: {majorId}</p>
      <ComboBox
        label="Pick an engineering major"
        defaultItems={options}
        onSelectionChange={setMajorId}>
        {item => <Item>{item.name}</Item>}
      </ComboBox>
    </>
  );
}

function Example() {
  let options = [
    {
      id: 1,
      name: 'Aerospace'
    },
    {
      id: 2,
      name: 'Mechanical'
    },
    {
      id: 3,
      name: 'Civil'
    },
    {
      id: 4,
      name: 'Biomedical'
    },
    {
      id: 5,
      name: 'Nuclear'
    },
    {
      id: 6,
      name: 'Industrial'
    },
    {
      id: 7,
      name: 'Chemical'
    },
    {
      id: 8,
      name:
        'Agricultural'
    },
    {
      id: 9,
      name: 'Electrical'
    }
  ];
  let [
    majorId,
    setMajorId
  ] = React.useState();

  return (
    <>
      <p>
        Topic id:{' '}
        {majorId}
      </p>
      <ComboBox
        label="Pick an engineering major"
        defaultItems={options}
        onSelectionChange={setMajorId}
      >
        {(item) => (
          <Item>
            {item.name}
          </Item>
        )}
      </ComboBox>
    </>
  );
}

Alternatively, passing your list of options to ComboBox's items prop will cause the list of items to be controlled, useful for when you want to provide your own filtering logic. See the Custom Filtering section for more detail.

Trays#

On mobile, ComboBox automatically displays in a tray instead of a popover to improve usability. The tray contains a search field that mobile users can use to filter the options available via text.

Internationalization#

To internationalize a ComboBox, a localized string should be passed to the children of each Item. For languages that are read right-to-left (e.g. Hebrew and Arabic), the layout of the ComboBox is automatically flipped.

Value#

A ComboBox's value is empty by default, but an initial, uncontrolled, value can be provided using the defaultInputValue prop. Alternatively, a controlled value can be provided using the inputValue prop. Note that the input value of the ComboBox does not affect the ComboBox's selected option. See Events for more details on input change events.

function Example() {
  let options = [
    {id: 1, name: 'Adobe Photoshop'},
    {id: 2, name: 'Adobe XD'},
    {id: 3, name: 'Adobe InDesign'},
    {id: 4, name: 'Adobe AfterEffects'},
    {id: 5, name: 'Adobe Illustrator'},
    {id: 6, name: 'Adobe Lightroom'},
    {id: 7, name: 'Adobe Premiere Pro'},
    {id: 8, name: 'Adobe Fresco'},
    {id: 9, name: 'Adobe Dreamweaver'}
  ];
  let [value, setValue] = React.useState('Adobe XD');

  return (
    <Flex gap="size-150" wrap>
      <ComboBox
        label="Adobe product (Uncontrolled)"
        defaultItems={options}
        defaultInputValue={"Adobe XD"}>
        {item => <Item>{item.name}</Item>}
      </ComboBox>

      <ComboBox
        label="Pick an Adobe product (Controlled)"
        defaultItems={options} inputValue={value}
        onInputChange={setValue}>
        {item => <Item>{item.name}</Item>}
      </ComboBox>
    </Flex>
  );
}

function Example() {
  let options = [
    {id: 1, name: 'Adobe Photoshop'},
    {id: 2, name: 'Adobe XD'},
    {id: 3, name: 'Adobe InDesign'},
    {id: 4, name: 'Adobe AfterEffects'},
    {id: 5, name: 'Adobe Illustrator'},
    {id: 6, name: 'Adobe Lightroom'},
    {id: 7, name: 'Adobe Premiere Pro'},
    {id: 8, name: 'Adobe Fresco'},
    {id: 9, name: 'Adobe Dreamweaver'}
  ];
  let [value, setValue] = React.useState('Adobe XD');

  return (
    <Flex gap="size-150" wrap>
      <ComboBox
        label="Adobe product (Uncontrolled)"
        defaultItems={options}
        defaultInputValue={"Adobe XD"}>
        {item => <Item>{item.name}</Item>}
      </ComboBox>

      <ComboBox
        label="Pick an Adobe product (Controlled)"
        defaultItems={options} inputValue={value}
        onInputChange={setValue}>
        {item => <Item>{item.name}</Item>}
      </ComboBox>
    </Flex>
  );
}

function Example() {
  let options = [
    {
      id: 1,
      name:
        'Adobe Photoshop'
    },
    {
      id: 2,
      name: 'Adobe XD'
    },
    {
      id: 3,
      name:
        'Adobe InDesign'
    },
    {
      id: 4,
      name:
        'Adobe AfterEffects'
    },
    {
      id: 5,
      name:
        'Adobe Illustrator'
    },
    {
      id: 6,
      name:
        'Adobe Lightroom'
    },
    {
      id: 7,
      name:
        'Adobe Premiere Pro'
    },
    {
      id: 8,
      name:
        'Adobe Fresco'
    },
    {
      id: 9,
      name:
        'Adobe Dreamweaver'
    }
  ];
  let [value, setValue] =
    React.useState(
      'Adobe XD'
    );

  return (
    <Flex
      gap="size-150"
      wrap
    >
      <ComboBox
        label="Adobe product (Uncontrolled)"
        defaultItems={options}
        defaultInputValue={'Adobe XD'}
      >
        {(item) => (
          <Item>
            {item.name}
          </Item>
        )}
      </ComboBox>

      <ComboBox
        label="Pick an Adobe product (Controlled)"
        defaultItems={options}
        inputValue={value}
        onInputChange={setValue}
      >
        {(item) => (
          <Item>
            {item.name}
          </Item>
        )}
      </ComboBox>
    </Flex>
  );
}

Placeholder text that describes the expected value or formatting for the ComboBox can be provided using the placeholder prop. Placeholder text will only appear when the ComboBox is empty, and should not be used as a substitute for labeling the component with a visible label.

function Example() {
  let options = [
    {id: 1, name: 'Aerospace'},
    {id: 2, name: 'Mechanical'},
    {id: 3, name: 'Civil'},
    {id: 4, name: 'Biomedical'},
    {id: 5, name: 'Nuclear'},
    {id: 6, name: 'Industrial'},
    {id: 7, name: 'Chemical'},
    {id: 8, name: 'Agricultural'},
    {id: 9, name: 'Electrical'}
  ];

  return (
    <ComboBox
      width="size-3000"
      label="Pick an engineering major"
      defaultItems={options}
      placeholder="Search engineering majors">
      {item => <Item>{item.name}</Item>}
    </ComboBox>
  );
}

function Example() {
  let options = [
    {id: 1, name: 'Aerospace'},
    {id: 2, name: 'Mechanical'},
    {id: 3, name: 'Civil'},
    {id: 4, name: 'Biomedical'},
    {id: 5, name: 'Nuclear'},
    {id: 6, name: 'Industrial'},
    {id: 7, name: 'Chemical'},
    {id: 8, name: 'Agricultural'},
    {id: 9, name: 'Electrical'}
  ];

  return (
    <ComboBox
      width="size-3000"
      label="Pick an engineering major"
      defaultItems={options}
      placeholder="Search engineering majors">
      {item => <Item>{item.name}</Item>}
    </ComboBox>
  );
}

function Example() {
  let options = [
    {
      id: 1,
      name: 'Aerospace'
    },
    {
      id: 2,
      name: 'Mechanical'
    },
    {
      id: 3,
      name: 'Civil'
    },
    {
      id: 4,
      name: 'Biomedical'
    },
    {
      id: 5,
      name: 'Nuclear'
    },
    {
      id: 6,
      name: 'Industrial'
    },
    {
      id: 7,
      name: 'Chemical'
    },
    {
      id: 8,
      name:
        'Agricultural'
    },
    {
      id: 9,
      name: 'Electrical'
    }
  ];

  return (
    <ComboBox
      width="size-3000"
      label="Pick an engineering major"
      defaultItems={options}
      placeholder="Search engineering majors"
    >
      {(item) => (
        <Item>
          {item.name}
        </Item>
      )}
    </ComboBox>
  );
}

Custom Value#

By default on blur, a ComboBox will either reset its input value to match the selected option's text or clear its input value if an option has not been selected yet. If you would like to allow the end user to provide a custom input value to the ComboBox, the allowsCustomValue prop can be used to override the above behavior.

function Example() {
  let options = [
    { name: 'Apple' },
    { name: 'Banana' },
    { name: 'Orange' },
    { name: 'Honeydew' },
    { name: 'Grapes' },
    { name: 'Watermelon' },
    { name: 'Cantaloupe' },
    { name: 'Pear' }
  ];

  return (
    <>
      <p>
        Please indicate what fruit you would like included with your delivery.
        If your desired choice does not appear in the list feel free to write
        your own selection.
      </p>
      <ComboBox
        label="Preferred fruit"
        defaultItems={options}
        allowsCustomValue
      >
        {(item) => <Item key={item.name}>{item.name}</Item>}
      </ComboBox>
    </>
  );
}

function Example() {
  let options = [
    { name: 'Apple' },
    { name: 'Banana' },
    { name: 'Orange' },
    { name: 'Honeydew' },
    { name: 'Grapes' },
    { name: 'Watermelon' },
    { name: 'Cantaloupe' },
    { name: 'Pear' }
  ];

  return (
    <>
      <p>
        Please indicate what fruit you would like included
        with your delivery. If your desired choice does not
        appear in the list feel free to write your own
        selection.
      </p>
      <ComboBox
        label="Preferred fruit"
        defaultItems={options}
        allowsCustomValue
      >
        {(item) => <Item key={item.name}>{item.name}</Item>}
      </ComboBox>
    </>
  );
}

function Example() {
  let options = [
    { name: 'Apple' },
    { name: 'Banana' },
    { name: 'Orange' },
    { name: 'Honeydew' },
    { name: 'Grapes' },
    {
      name: 'Watermelon'
    },
    {
      name: 'Cantaloupe'
    },
    { name: 'Pear' }
  ];

  return (
    <>
      <p>
        Please indicate
        what fruit you
        would like
        included with
        your delivery. If
        your desired
        choice does not
        appear in the
        list feel free to
        write your own
        selection.
      </p>
      <ComboBox
        label="Preferred fruit"
        defaultItems={options}
        allowsCustomValue
      >
        {(item) => (
          <Item
            key={item
              .name}
          >
            {item.name}
          </Item>
        )}
      </ComboBox>
    </>
  );
}

Labeling#

ComboBox can be labeled using the label prop. If the ComboBox is a required field, the isRequired and necessityIndicator props can be used to show a required state.

<ComboBox label="Favorite Animal" isRequired necessityIndicator="icon">
  <Item key="red panda">Red Panda</Item>
  <Item key="cat">Cat</Item>
  <Item key="dog">Dog</Item>
  <Item key="aardvark">Aardvark</Item>
  <Item key="kangaroo">Kangaroo</Item>
  <Item key="snake">Snake</Item>
</ComboBox>

<ComboBox
  label="Favorite Animal"
  isRequired
  necessityIndicator="icon"
>
  <Item key="red panda">Red Panda</Item>
  <Item key="cat">Cat</Item>
  <Item key="dog">Dog</Item>
  <Item key="aardvark">Aardvark</Item>
  <Item key="kangaroo">Kangaroo</Item>
  <Item key="snake">Snake</Item>
</ComboBox>

<ComboBox
  label="Favorite Animal"
  isRequired
  necessityIndicator="icon"
>
  <Item key="red panda">
    Red Panda
  </Item>
  <Item key="cat">
    Cat
  </Item>
  <Item key="dog">
    Dog
  </Item>
  <Item key="aardvark">
    Aardvark
  </Item>
  <Item key="kangaroo">
    Kangaroo
  </Item>
  <Item key="snake">
    Snake
  </Item>
</ComboBox>

<ComboBox label="Favorite Animal" isRequired necessityIndicator="label">
  <Item key="red panda">Red Panda</Item>
  <Item key="cat">Cat</Item>
  <Item key="dog">Dog</Item>
  <Item key="aardvark">Aardvark</Item>
  <Item key="kangaroo">Kangaroo</Item>
  <Item key="snake">Snake</Item>
</ComboBox>

<ComboBox
  label="Favorite Animal"
  isRequired
  necessityIndicator="label"
>
  <Item key="red panda">Red Panda</Item>
  <Item key="cat">Cat</Item>
  <Item key="dog">Dog</Item>
  <Item key="aardvark">Aardvark</Item>
  <Item key="kangaroo">Kangaroo</Item>
  <Item key="snake">Snake</Item>
</ComboBox>

<ComboBox
  label="Favorite Animal"
  isRequired
  necessityIndicator="label"
>
  <Item key="red panda">
    Red Panda
  </Item>
  <Item key="cat">
    Cat
  </Item>
  <Item key="dog">
    Dog
  </Item>
  <Item key="aardvark">
    Aardvark
  </Item>
  <Item key="kangaroo">
    Kangaroo
  </Item>
  <Item key="snake">
    Snake
  </Item>
</ComboBox>

<ComboBox label="Favorite Animal" necessityIndicator="label">
  <Item key="red panda">Red Panda</Item>
  <Item key="cat">Cat</Item>
  <Item key="dog">Dog</Item>
  <Item key="aardvark">Aardvark</Item>
  <Item key="kangaroo">Kangaroo</Item>
  <Item key="snake">Snake</Item>
</ComboBox>

<ComboBox
  label="Favorite Animal"
  necessityIndicator="label"
>
  <Item key="red panda">Red Panda</Item>
  <Item key="cat">Cat</Item>
  <Item key="dog">Dog</Item>
  <Item key="aardvark">Aardvark</Item>
  <Item key="kangaroo">Kangaroo</Item>
  <Item key="snake">Snake</Item>
</ComboBox>

<ComboBox
  label="Favorite Animal"
  necessityIndicator="label"
>
  <Item key="red panda">
    Red Panda
  </Item>
  <Item key="cat">
    Cat
  </Item>
  <Item key="dog">
    Dog
  </Item>
  <Item key="aardvark">
    Aardvark
  </Item>
  <Item key="kangaroo">
    Kangaroo
  </Item>
  <Item key="snake">
    Snake
  </Item>
</ComboBox>

Accessibility#

If a visible label isn't specified, an aria-label must be provided to the ComboBox for accessibility. If the field is labeled by a separate element, an aria-labelledby prop must be provided using the id of the labeling element instead.

Internationalization#

In order to internationalize a ComboBox, a localized string should be passed to the label or aria-label prop. When the necessityIndicator prop is set to "label", a localized string will be provided for "(required)" or "(optional)" automatically.

Selection#

Setting a selected option can be done by using the defaultSelectedKey or selectedKey prop. The selected key corresponds to the key of an item. See Events for more details on selection events. Additionally, see the react-stately Selection docs for caveats regarding selection prop typing.

function Example() {
  let options = [
    {id: 1, name: 'Adobe Photoshop'},
    {id: 2, name: 'Adobe XD'},
    {id: 3, name: 'Adobe InDesign'},
    {id: 4, name: 'Adobe AfterEffects'},
    {id: 5, name: 'Adobe Illustrator'},
    {id: 6, name: 'Adobe Lightroom'},
    {id: 7, name: 'Adobe Premiere Pro'},
    {id: 8, name: 'Adobe Fresco'},
    {id: 9, name: 'Adobe Dreamweaver'}
  ];
  let [productId, setProductId] = React.useState(9);

  return (
    <Flex gap="size-150" wrap>
      <ComboBox
        label="Pick an Adobe product (uncontrolled)"
        defaultItems={options}
        defaultSelectedKey={9}>
        {item => <Item>{item.name}</Item>}
      </ComboBox>

      <ComboBox
        label="Pick an Adobe product (controlled)"
        defaultItems={options}
        selectedKey={productId}
        onSelectionChange={selected => setProductId(selected)}>
        {item => <Item>{item.name}</Item>}
      </ComboBox>
    </Flex>
  );
}

function Example() {
  let options = [
    { id: 1, name: 'Adobe Photoshop' },
    { id: 2, name: 'Adobe XD' },
    { id: 3, name: 'Adobe InDesign' },
    { id: 4, name: 'Adobe AfterEffects' },
    { id: 5, name: 'Adobe Illustrator' },
    { id: 6, name: 'Adobe Lightroom' },
    { id: 7, name: 'Adobe Premiere Pro' },
    { id: 8, name: 'Adobe Fresco' },
    { id: 9, name: 'Adobe Dreamweaver' }
  ];
  let [productId, setProductId] = React.useState(9);

  return (
    <Flex gap="size-150" wrap>
      <ComboBox
        label="Pick an Adobe product (uncontrolled)"
        defaultItems={options}
        defaultSelectedKey={9}
      >
        {(item) => <Item>{item.name}</Item>}
      </ComboBox>

      <ComboBox
        label="Pick an Adobe product (controlled)"
        defaultItems={options}
        selectedKey={productId}
        onSelectionChange={(selected) =>
          setProductId(selected)}
      >
        {(item) => <Item>{item.name}</Item>}
      </ComboBox>
    </Flex>
  );
}

function Example() {
  let options = [
    {
      id: 1,
      name:
        'Adobe Photoshop'
    },
    {
      id: 2,
      name: 'Adobe XD'
    },
    {
      id: 3,
      name:
        'Adobe InDesign'
    },
    {
      id: 4,
      name:
        'Adobe AfterEffects'
    },
    {
      id: 5,
      name:
        'Adobe Illustrator'
    },
    {
      id: 6,
      name:
        'Adobe Lightroom'
    },
    {
      id: 7,
      name:
        'Adobe Premiere Pro'
    },
    {
      id: 8,
      name:
        'Adobe Fresco'
    },
    {
      id: 9,
      name:
        'Adobe Dreamweaver'
    }
  ];
  let [
    productId,
    setProductId
  ] = React.useState(9);

  return (
    <Flex
      gap="size-150"
      wrap
    >
      <ComboBox
        label="Pick an Adobe product (uncontrolled)"
        defaultItems={options}
        defaultSelectedKey={9}
      >
        {(item) => (
          <Item>
            {item.name}
          </Item>
        )}
      </ComboBox>

      <ComboBox
        label="Pick an Adobe product (controlled)"
        defaultItems={options}
        selectedKey={productId}
        onSelectionChange={(selected) =>
          setProductId(
            selected
          )}
      >
        {(item) => (
          <Item>
            {item.name}
          </Item>
        )}
      </ComboBox>
    </Flex>
  );
}

Sections#

ComboBox supports sections in order to group options. Sections can be used by wrapping groups of items in a Section element. Each Section takes a title and key prop.

Static items#

<ComboBox label="Preferred fruit or vegetable">
  <Section title="Fruit">
    <Item key="Apple">Apple</Item>
    <Item key="Banana">Banana</Item>
    <Item key="Orange">Orange</Item>
    <Item key="Honeydew">Honeydew</Item>
    <Item key="Grapes">Grapes</Item>
    <Item key="Watermelon">Watermelon</Item>
    <Item key="Cantaloupe">Cantaloupe</Item>
    <Item key="Pear">Pear</Item>
  </Section>
  <Section title="Vegetable">
    <Item key="Cabbage">Cabbage</Item>
    <Item key="Broccoli">Broccoli</Item>
    <Item key="Carrots">Carrots</Item>
    <Item key="Lettuce">Lettuce</Item>
    <Item key="Spinach">Spinach</Item>
    <Item key="Bok Choy">Bok Choy</Item>
    <Item key="Cauliflower">Cauliflower</Item>
    <Item key="Potatoes">Potatoes</Item>
  </Section>
</ComboBox>

<ComboBox label="Preferred fruit or vegetable">
  <Section title="Fruit">
    <Item key="Apple">Apple</Item>
    <Item key="Banana">Banana</Item>
    <Item key="Orange">Orange</Item>
    <Item key="Honeydew">Honeydew</Item>
    <Item key="Grapes">Grapes</Item>
    <Item key="Watermelon">Watermelon</Item>
    <Item key="Cantaloupe">Cantaloupe</Item>
    <Item key="Pear">Pear</Item>
  </Section>
  <Section title="Vegetable">
    <Item key="Cabbage">Cabbage</Item>
    <Item key="Broccoli">Broccoli</Item>
    <Item key="Carrots">Carrots</Item>
    <Item key="Lettuce">Lettuce</Item>
    <Item key="Spinach">Spinach</Item>
    <Item key="Bok Choy">Bok Choy</Item>
    <Item key="Cauliflower">Cauliflower</Item>
    <Item key="Potatoes">Potatoes</Item>
  </Section>
</ComboBox>

<ComboBox label="Preferred fruit or vegetable">
  <Section title="Fruit">
    <Item key="Apple">
      Apple
    </Item>
    <Item key="Banana">
      Banana
    </Item>
    <Item key="Orange">
      Orange
    </Item>
    <Item key="Honeydew">
      Honeydew
    </Item>
    <Item key="Grapes">
      Grapes
    </Item>
    <Item key="Watermelon">
      Watermelon
    </Item>
    <Item key="Cantaloupe">
      Cantaloupe
    </Item>
    <Item key="Pear">
      Pear
    </Item>
  </Section>
  <Section title="Vegetable">
    <Item key="Cabbage">
      Cabbage
    </Item>
    <Item key="Broccoli">
      Broccoli
    </Item>
    <Item key="Carrots">
      Carrots
    </Item>
    <Item key="Lettuce">
      Lettuce
    </Item>
    <Item key="Spinach">
      Spinach
    </Item>
    <Item key="Bok Choy">
      Bok Choy
    </Item>
    <Item key="Cauliflower">
      Cauliflower
    </Item>
    <Item key="Potatoes">
      Potatoes
    </Item>
  </Section>
</ComboBox>

Dynamic items#

Sections used with dynamic items are populated from a hierarchical data structure. Please note that Section takes an array of data using the items prop only.

function Example() {
  let options = [
    {name: 'Fruit', children: [
      {name: 'Apple'},
      {name: 'Banana'},
      {name: 'Orange'},
      {name: 'Honeydew'},
      {name: 'Grapes'},
      {name: 'Watermelon'},
      {name: 'Cantaloupe'},
      {name: 'Pear'}
    ]},
    {name: 'Vegetable', children: [
      {name: 'Cabbage'},
      {name: 'Broccoli'},
      {name: 'Carrots'},
      {name: 'Lettuce'},
      {name: 'Spinach'},
      {name: 'Bok Choy'},
      {name: 'Cauliflower'},
      {name: 'Potatoes'}
    ]}
  ];

  return (
    <ComboBox label="Preferred fruit or vegetable" defaultItems={options}>
      {item => (
        <Section key={item.name} items={item.children} title={item.name}>
          {item => <Item key={item.name}>{item.name}</Item>}
        </Section>
      )}
    </ComboBox>
  );
}

function Example() {
  let options = [
    {
      name: 'Fruit',
      children: [
        { name: 'Apple' },
        { name: 'Banana' },
        { name: 'Orange' },
        { name: 'Honeydew' },
        { name: 'Grapes' },
        { name: 'Watermelon' },
        { name: 'Cantaloupe' },
        { name: 'Pear' }
      ]
    },
    {
      name: 'Vegetable',
      children: [
        { name: 'Cabbage' },
        { name: 'Broccoli' },
        { name: 'Carrots' },
        { name: 'Lettuce' },
        { name: 'Spinach' },
        { name: 'Bok Choy' },
        { name: 'Cauliflower' },
        { name: 'Potatoes' }
      ]
    }
  ];

  return (
    <ComboBox
      label="Preferred fruit or vegetable"
      defaultItems={options}
    >
      {(item) => (
        <Section
          key={item.name}
          items={item.children}
          title={item.name}
        >
          {(item) => (
            <Item key={item.name}>{item.name}</Item>
          )}
        </Section>
      )}
    </ComboBox>
  );
}

function Example() {
  let options = [
    {
      name: 'Fruit',
      children: [
        {
          name: 'Apple'
        },
        {
          name: 'Banana'
        },
        {
          name: 'Orange'
        },
        {
          name:
            'Honeydew'
        },
        {
          name: 'Grapes'
        },
        {
          name:
            'Watermelon'
        },
        {
          name:
            'Cantaloupe'
        },
        { name: 'Pear' }
      ]
    },
    {
      name: 'Vegetable',
      children: [
        {
          name: 'Cabbage'
        },
        {
          name:
            'Broccoli'
        },
        {
          name: 'Carrots'
        },
        {
          name: 'Lettuce'
        },
        {
          name: 'Spinach'
        },
        {
          name:
            'Bok Choy'
        },
        {
          name:
            'Cauliflower'
        },
        {
          name:
            'Potatoes'
        }
      ]
    }
  ];

  return (
    <ComboBox
      label="Preferred fruit or vegetable"
      defaultItems={options}
    >
      {(item) => (
        <Section
          key={item.name}
          items={item
            .children}
          title={item
            .name}
        >
          {(item) => (
            <Item
              key={item
                .name}
            >
              {item.name}
            </Item>
          )}
        </Section>
      )}
    </ComboBox>
  );
}

Events#

ComboBox supports selection via mouse, keyboard, and touch. You can handle all of these via the onSelectionChange prop. ComboBox will pass the selected key to the onSelectionChange handler. Additionally, ComboBox accepts an onInputChange prop which is triggered whenever the value is edited by the user, whether through typing or option selection.

The example below uses onSelectionChange and onInputChange to update the selection and input value stored in React state.

function Example() {
  let options = [
    {id: 1, name: 'Aerospace'},
    {id: 2, name: 'Mechanical'},
    {id: 3, name: 'Civil'},
    {id: 4, name: 'Biomedical'},
    {id: 5, name: 'Nuclear'},
    {id: 6, name: 'Industrial'},
    {id: 7, name: 'Chemical'},
    {id: 8, name: 'Agricultural'},
    {id: 9, name: 'Electrical'}
  ];

  let [value, setValue] = React.useState('');
  let [majorId, setMajorId] = React.useState('');

  let onSelectionChange = (id) => {
    setMajorId(id);
  };

  let onInputChange = (value) => {
    setValue(value)
  };

  return (
    <>
      <p>Current selected major id: {majorId}</p>
      <p>Current input text: {value}</p>
      <ComboBox
        label="Pick a engineering major"
        defaultItems={options}
        selectedKey={majorId}
        onSelectionChange={onSelectionChange}
        onInputChange={onInputChange}>
        {item => <Item>{item.name}</Item>}
      </ComboBox>
    </>
  );
}

function Example() {
  let options = [
    {id: 1, name: 'Aerospace'},
    {id: 2, name: 'Mechanical'},
    {id: 3, name: 'Civil'},
    {id: 4, name: 'Biomedical'},
    {id: 5, name: 'Nuclear'},
    {id: 6, name: 'Industrial'},
    {id: 7, name: 'Chemical'},
    {id: 8, name: 'Agricultural'},
    {id: 9, name: 'Electrical'}
  ];

  let [value, setValue] = React.useState('');
  let [majorId, setMajorId] = React.useState('');

  let onSelectionChange = (id) => {
    setMajorId(id);
  };

  let onInputChange = (value) => {
    setValue(value)
  };

  return (
    <>
      <p>Current selected major id: {majorId}</p>
      <p>Current input text: {value}</p>
      <ComboBox
        label="Pick a engineering major"
        defaultItems={options}
        selectedKey={majorId}
        onSelectionChange={onSelectionChange}
        onInputChange={onInputChange}>
        {item => <Item>{item.name}</Item>}
      </ComboBox>
    </>
  );
}

function Example() {
  let options = [
    {
      id: 1,
      name: 'Aerospace'
    },
    {
      id: 2,
      name: 'Mechanical'
    },
    {
      id: 3,
      name: 'Civil'
    },
    {
      id: 4,
      name: 'Biomedical'
    },
    {
      id: 5,
      name: 'Nuclear'
    },
    {
      id: 6,
      name: 'Industrial'
    },
    {
      id: 7,
      name: 'Chemical'
    },
    {
      id: 8,
      name:
        'Agricultural'
    },
    {
      id: 9,
      name: 'Electrical'
    }
  ];

  let [value, setValue] =
    React.useState('');
  let [
    majorId,
    setMajorId
  ] = React.useState('');

  let onSelectionChange =
    (id) => {
      setMajorId(id);
    };

  let onInputChange = (
    value
  ) => {
    setValue(value);
  };

  return (
    <>
      <p>
        Current selected
        major id:{' '}
        {majorId}
      </p>
      <p>
        Current input
        text: {value}
      </p>
      <ComboBox
        label="Pick a engineering major"
        defaultItems={options}
        selectedKey={majorId}
        onSelectionChange={onSelectionChange}
        onInputChange={onInputChange}
      >
        {(item) => (
          <Item>
            {item.name}
          </Item>
        )}
      </ComboBox>
    </>
  );
}

Fully controlled ComboBox#

When a ComboBox has multiple controlled properties (e.g.inputValue, selectedKey, items), it is important to note that an update to one of these properties will not automatically update the others. Each interaction done in the ComboBox will only trigger its associated event handler. For example, typing in the field will only trigger onInputChange whereas selecting an item from the ComboBox menu will only trigger onSelectionChange so it is your responsibility to update the other controlled properties accordingly. Note that you should provide an onSelectionChange handler for a ComboBox with controlled input value and open state. This way, you can properly control the menu's open state when the user selects an option or blurs from the field.

The below example demonstrates how you would construct the same example above in a completely controlled fashion.

import {useTreeData} from '@react-stately/data';

function Example() {
  let options = [
    {id: 1, name: 'Aerospace'},
    {id: 2, name: 'Mechanical'},
    {id: 3, name: 'Civil'},
    {id: 4, name: 'Biomedical'},
    {id: 5, name: 'Nuclear'},
    {id: 6, name: 'Industrial'},
    {id: 7, name: 'Chemical'},
    {id: 8, name: 'Agricultural'},
    {id: 9, name: 'Electrical'}
  ];

  let [fieldState, setFieldState] = React.useState({
    selectedKey: '',
    inputValue: ''
  });

  let list = useTreeData({
    initialItems: options
  });

  let onSelectionChange = (key) => {
    setFieldState({
      inputValue: list.getItem(key)?.value.name ?? '',
      selectedKey: key
    });
  };

  let onInputChange = (value) => {
    setFieldState(prevState => ({
      inputValue: value,
      selectedKey: value === '' ? null : prevState.selectedKey
    }));
  };

  return (
     <>
      <p>Current selected major id: {fieldState.selectedKey}</p>
      <p>Current input text: {fieldState.inputValue}</p>
       <ComboBox
        label="Pick a engineering major"
        defaultItems={list.items}
        selectedKey={fieldState.selectedKey}
        inputValue={fieldState.inputValue}
        onSelectionChange={onSelectionChange}
        onInputChange={onInputChange}>
        {item => <Item>{item.value.name}</Item>}
      </ComboBox>
     </>
  );
}

import {useTreeData} from '@react-stately/data';

function Example() {
  let options = [
    { id: 1, name: 'Aerospace' },
    { id: 2, name: 'Mechanical' },
    { id: 3, name: 'Civil' },
    { id: 4, name: 'Biomedical' },
    { id: 5, name: 'Nuclear' },
    { id: 6, name: 'Industrial' },
    { id: 7, name: 'Chemical' },
    { id: 8, name: 'Agricultural' },
    { id: 9, name: 'Electrical' }
  ];

  let [fieldState, setFieldState] = React.useState({
    selectedKey: '',
    inputValue: ''
  });

  let list = useTreeData({
    initialItems: options
  });

  let onSelectionChange = (key) => {
    setFieldState({
      inputValue: list.getItem(key)?.value.name ?? '',
      selectedKey: key
    });
  };

  let onInputChange = (value) => {
    setFieldState((prevState) => ({
      inputValue: value,
      selectedKey: value === ''
        ? null
        : prevState.selectedKey
    }));
  };

  return (
    <>
      <p>
        Current selected major id: {fieldState.selectedKey}
      </p>
      <p>Current input text: {fieldState.inputValue}</p>
      <ComboBox
        label="Pick a engineering major"
        defaultItems={list.items}
        selectedKey={fieldState.selectedKey}
        inputValue={fieldState.inputValue}
        onSelectionChange={onSelectionChange}
        onInputChange={onInputChange}
      >
        {(item) => <Item>{item.value.name}</Item>}
      </ComboBox>
    </>
  );
}

import {useTreeData} from '@react-stately/data';

function Example() {
  let options = [
    {
      id: 1,
      name: 'Aerospace'
    },
    {
      id: 2,
      name: 'Mechanical'
    },
    {
      id: 3,
      name: 'Civil'
    },
    {
      id: 4,
      name: 'Biomedical'
    },
    {
      id: 5,
      name: 'Nuclear'
    },
    {
      id: 6,
      name: 'Industrial'
    },
    {
      id: 7,
      name: 'Chemical'
    },
    {
      id: 8,
      name:
        'Agricultural'
    },
    {
      id: 9,
      name: 'Electrical'
    }
  ];

  let [
    fieldState,
    setFieldState
  ] = React.useState({
    selectedKey: '',
    inputValue: ''
  });

  let list = useTreeData(
    {
      initialItems:
        options
    }
  );

  let onSelectionChange =
    (key) => {
      setFieldState({
        inputValue:
          list.getItem(
            key
          )?.value
            .name ?? '',
        selectedKey: key
      });
    };

  let onInputChange = (
    value
  ) => {
    setFieldState(
      (prevState) => ({
        inputValue:
          value,
        selectedKey:
          value === ''
            ? null
            : prevState
              .selectedKey
      })
    );
  };

  return (
    <>
      <p>
        Current selected
        major id:{' '}
        {fieldState
          .selectedKey}
      </p>
      <p>
        Current input
        text:{' '}
        {fieldState
          .inputValue}
      </p>
      <ComboBox
        label="Pick a engineering major"
        defaultItems={list
          .items}
        selectedKey={fieldState
          .selectedKey}
        inputValue={fieldState
          .inputValue}
        onSelectionChange={onSelectionChange}
        onInputChange={onInputChange}
      >
        {(item) => (
          <Item>
            {item.value
              .name}
          </Item>
        )}
      </ComboBox>
    </>
  );
}

Complex items#

Items within ComboBox also allow for additional content used to better communicate options. Icons and descriptions can be added to the children of Item as shown in the example below. If a description is added, the prop slot="description" must be used to distinguish the different <Text> elements.

<ComboBox label="Select action">
  <Item textValue="Add to queue">
    <Add />
    <Text>Add to queue</Text>
    <Text slot="description">Add to current watch queue.</Text>
  </Item>
  <Item textValue="Add review">
    <Draw />
    <Text>Add review</Text>
    <Text slot="description">Post a review for the episode.</Text>
  </Item>
  <Item textValue="Subscribe to series">
    <Bell />
    <Text>Subscribe to series</Text>
    <Text slot="description">
      Add series to your subscription list and be notified when a new episode
      airs.
    </Text>
  </Item>
  <Item textValue="Report">
    <Alert />
    <Text>Report</Text>
    <Text slot="description">Report an issue/violation.</Text>
  </Item>
</ComboBox>

<ComboBox label="Select action">
  <Item textValue="Add to queue">
    <Add />
    <Text>Add to queue</Text>
    <Text slot="description">
      Add to current watch queue.
    </Text>
  </Item>
  <Item textValue="Add review">
    <Draw />
    <Text>Add review</Text>
    <Text slot="description">
      Post a review for the episode.
    </Text>
  </Item>
  <Item textValue="Subscribe to series">
    <Bell />
    <Text>Subscribe to series</Text>
    <Text slot="description">
      Add series to your subscription list and be notified
      when a new episode airs.
    </Text>
  </Item>
  <Item textValue="Report">
    <Alert />
    <Text>Report</Text>
    <Text slot="description">
      Report an issue/violation.
    </Text>
  </Item>
</ComboBox>

<ComboBox label="Select action">
  <Item textValue="Add to queue">
    <Add />
    <Text>
      Add to queue
    </Text>
    <Text slot="description">
      Add to current
      watch queue.
    </Text>
  </Item>
  <Item textValue="Add review">
    <Draw />
    <Text>
      Add review
    </Text>
    <Text slot="description">
      Post a review for
      the episode.
    </Text>
  </Item>
  <Item textValue="Subscribe to series">
    <Bell />
    <Text>
      Subscribe to
      series
    </Text>
    <Text slot="description">
      Add series to
      your subscription
      list and be
      notified when a
      new episode airs.
    </Text>
  </Item>
  <Item textValue="Report">
    <Alert />
    <Text>Report</Text>
    <Text slot="description">
      Report an
      issue/violation.
    </Text>
  </Item>
</ComboBox>

Asynchronous loading#

ComboBox supports loading data asynchronously, and will display a progress circle reflecting the current load state, set by the loadingState prop. It also supports infinite scrolling to load more data on demand as the user scrolls, via the onLoadMore prop.

This example uses the useAsyncList hook to handle loading the data. See the docs for more information.

import {useAsyncList} from '@react-stately/data';

function AsyncLoadingExample() {
  let list = useAsyncList({
    async load({ signal, cursor, filterText }) {
      if (cursor) {
        cursor = cursor.replace(/^http:\/\//i, 'https://');
      }

      // If no cursor is available, then we're loading the first page,
      // filtering the results returned via a query string that
      // mirrors the ComboBox input text.
      // Otherwise, the cursor is the next URL to load,
      // as returned from the previous page.
      let res = await fetch(
        cursor || `https://swapi.py4e.com/api/people/?search=${filterText}`,
        { signal }
      );
      let json = await res.json();

      return {
        items: json.results,
        cursor: json.next
      };
    }
  });

  return (
    <ComboBox
      label="Star Wars Character Lookup"
      items={list.items}
      inputValue={list.filterText}
      onInputChange={list.setFilterText}
      loadingState={list.loadingState}
      onLoadMore={list.loadMore}
    >
      {(item) => <Item key={item.name}>{item.name}</Item>}
    </ComboBox>
  );
}

import {useAsyncList} from '@react-stately/data';

function AsyncLoadingExample() {
  let list = useAsyncList({
    async load({ signal, cursor, filterText }) {
      if (cursor) {
        cursor = cursor.replace(/^http:\/\//i, 'https://');
      }

      // If no cursor is available, then we're loading the first page,
      // filtering the results returned via a query string that
      // mirrors the ComboBox input text.
      // Otherwise, the cursor is the next URL to load,
      // as returned from the previous page.
      let res = await fetch(
        cursor ||
          `https://swapi.py4e.com/api/people/?search=${filterText}`,
        { signal }
      );
      let json = await res.json();

      return {
        items: json.results,
        cursor: json.next
      };
    }
  });

  return (
    <ComboBox
      label="Star Wars Character Lookup"
      items={list.items}
      inputValue={list.filterText}
      onInputChange={list.setFilterText}
      loadingState={list.loadingState}
      onLoadMore={list.loadMore}
    >
      {(item) => <Item key={item.name}>{item.name}</Item>}
    </ComboBox>
  );
}

import {useAsyncList} from '@react-stately/data';

function AsyncLoadingExample() {
  let list =
    useAsyncList({
      async load(
        {
          signal,
          cursor,
          filterText
        }
      ) {
        if (cursor) {
          cursor = cursor
            .replace(
              /^http:\/\//i,
              'https://'
            );
        }

        // If no cursor is available, then we're loading the first page,
        // filtering the results returned via a query string that
        // mirrors the ComboBox input text.
        // Otherwise, the cursor is the next URL to load,
        // as returned from the previous page.
        let res =
          await fetch(
            cursor ||
              `https://swapi.py4e.com/api/people/?search=${filterText}`,
            { signal }
          );
        let json =
          await res
            .json();

        return {
          items:
            json.results,
          cursor:
            json.next
        };
      }
    });

  return (
    <ComboBox
      label="Star Wars Character Lookup"
      items={list.items}
      inputValue={list
        .filterText}
      onInputChange={list
        .setFilterText}
      loadingState={list
        .loadingState}
      onLoadMore={list
        .loadMore}
    >
      {(item) => (
        <Item
          key={item.name}
        >
          {item.name}
        </Item>
      )}
    </ComboBox>
  );
}

When both inputValue and selectedKey are controlled, and the selectedKey is set to an initial value before the items load, you must update the inputValue when the items load. This can be done by returning filterText from the useAsyncList load function.

The example below demonstrates how you could update the input value for your selected key once your list of items has been fetched.

function AsyncLoadingExample() {
  let isFocused = React.useRef(false);
  let list = useAsyncList({
    async load({ signal, cursor, filterText, selectedKeys }) {
      if (cursor) {
        cursor = cursor.replace(/^http:\/\//i, 'https://');
      }

      // If no cursor is available, then we're loading the first page,
      // filtering the results returned via a query string that
      // mirrors the ComboBox input text.
      // Otherwise, the cursor is the next URL to load,
      // as returned from the previous page.
      let res = await fetch(
        cursor || `https://swapi.py4e.com/api/people/?search=${filterText}`,
        { signal }
      );
      let json = await res.json();

      let selectedText;
      let selectedKey = selectedKeys.values().next().value;

      // If selectedKey exists and combobox is not focused, update the input value with the selected key text
      // This allows the input value to be up to date when items load for the first time or the selected key text is updated server side.
      if (!isFocused.current && selectedKey) {
        let selectedItemName = json.results.find((item) =>
          item.name === selectedKey
        )?.name;
        if (selectedItemName != null && selectedItemName !== filterText) {
          selectedText = selectedItemName;
        }
      }

      return {
        items: json.results,
        cursor: json.next,
        filterText: selectedText ?? filterText
      };
    },
    initialSelectedKeys: ['Luke Skywalker'],
    getKey: (item) => item.name
  });

  let onSelectionChange = (key) => {
    let itemText = list.getItem(key)?.name;
    list.setSelectedKeys(new Set([key]));
    list.setFilterText(itemText);
  };

  let onInputChange = (value) => {
    // Clear key if user deletes all text in the field
    if (value === '') {
      list.setSelectedKeys(new Set([null]));
    }
    list.setFilterText(value);
  };

  let selectedKey = list.selectedKeys.values().next().value;
  return (
    <ComboBox
      label="Star Wars Character Lookup"
      onFocusChange={(focus) => isFocused.current = focus}
      selectedKey={selectedKey}
      onSelectionChange={onSelectionChange}
      items={list.items}
      inputValue={list.filterText}
      onInputChange={onInputChange}
      loadingState={list.loadingState}
      onLoadMore={list.loadMore}
    >
      {(item) => <Item key={item.name}>{item.name}</Item>}
    </ComboBox>
  );
}

function AsyncLoadingExample() {
  let isFocused = React.useRef(false);
  let list = useAsyncList({
    async load(
      { signal, cursor, filterText, selectedKeys }
    ) {
      if (cursor) {
        cursor = cursor.replace(/^http:\/\//i, 'https://');
      }

      // If no cursor is available, then we're loading the first page,
      // filtering the results returned via a query string that
      // mirrors the ComboBox input text.
      // Otherwise, the cursor is the next URL to load,
      // as returned from the previous page.
      let res = await fetch(
        cursor ||
          `https://swapi.py4e.com/api/people/?search=${filterText}`,
        { signal }
      );
      let json = await res.json();

      let selectedText;
      let selectedKey = selectedKeys.values().next().value;

      // If selectedKey exists and combobox is not focused, update the input value with the selected key text
      // This allows the input value to be up to date when items load for the first time or the selected key text is updated server side.
      if (!isFocused.current && selectedKey) {
        let selectedItemName = json.results.find((item) =>
          item.name === selectedKey
        )?.name;
        if (
          selectedItemName != null &&
          selectedItemName !== filterText
        ) {
          selectedText = selectedItemName;
        }
      }

      return {
        items: json.results,
        cursor: json.next,
        filterText: selectedText ?? filterText
      };
    },
    initialSelectedKeys: ['Luke Skywalker'],
    getKey: (item) => item.name
  });

  let onSelectionChange = (key) => {
    let itemText = list.getItem(key)?.name;
    list.setSelectedKeys(new Set([key]));
    list.setFilterText(itemText);
  };

  let onInputChange = (value) => {
    // Clear key if user deletes all text in the field
    if (value === '') {
      list.setSelectedKeys(new Set([null]));
    }
    list.setFilterText(value);
  };

  let selectedKey = list.selectedKeys.values().next().value;
  return (
    <ComboBox
      label="Star Wars Character Lookup"
      onFocusChange={(focus) => isFocused.current = focus}
      selectedKey={selectedKey}
      onSelectionChange={onSelectionChange}
      items={list.items}
      inputValue={list.filterText}
      onInputChange={onInputChange}
      loadingState={list.loadingState}
      onLoadMore={list.loadMore}
    >
      {(item) => <Item key={item.name}>{item.name}</Item>}
    </ComboBox>
  );
}

function AsyncLoadingExample() {
  let isFocused = React
    .useRef(false);
  let list =
    useAsyncList({
      async load(
        {
          signal,
          cursor,
          filterText,
          selectedKeys
        }
      ) {
        if (cursor) {
          cursor = cursor
            .replace(
              /^http:\/\//i,
              'https://'
            );
        }

        // If no cursor is available, then we're loading the first page,
        // filtering the results returned via a query string that
        // mirrors the ComboBox input text.
        // Otherwise, the cursor is the next URL to load,
        // as returned from the previous page.
        let res =
          await fetch(
            cursor ||
              `https://swapi.py4e.com/api/people/?search=${filterText}`,
            { signal }
          );
        let json =
          await res
            .json();

        let selectedText;
        let selectedKey =
          selectedKeys
            .values()
            .next()
            .value;

        // If selectedKey exists and combobox is not focused, update the input value with the selected key text
        // This allows the input value to be up to date when items load for the first time or the selected key text is updated server side.
        if (
          !isFocused
            .current &&
          selectedKey
        ) {
          let selectedItemName =
            json.results
              .find(
                (item) =>
                  item
                    .name ===
                    selectedKey
              )?.name;
          if (
            selectedItemName !=
              null &&
            selectedItemName !==
              filterText
          ) {
            selectedText =
              selectedItemName;
          }
        }

        return {
          items:
            json.results,
          cursor:
            json.next,
          filterText:
            selectedText ??
              filterText
        };
      },
      initialSelectedKeys:
        ['Luke Skywalker'],
      getKey: (item) =>
        item.name
    });

  let onSelectionChange =
    (key) => {
      let itemText = list
        .getItem(key)
        ?.name;
      list
        .setSelectedKeys(
          new Set([key])
        );
      list.setFilterText(
        itemText
      );
    };

  let onInputChange = (
    value
  ) => {
    // Clear key if user deletes all text in the field
    if (value === '') {
      list
        .setSelectedKeys(
          new Set([null])
        );
    }
    list.setFilterText(
      value
    );
  };

  let selectedKey =
    list.selectedKeys
      .values().next()
      .value;
  return (
    <ComboBox
      label="Star Wars Character Lookup"
      onFocusChange={(
        focus
      ) =>
        isFocused
          .current =
            focus}
      selectedKey={selectedKey}
      onSelectionChange={onSelectionChange}
      items={list.items}
      inputValue={list
        .filterText}
      onInputChange={onInputChange}
      loadingState={list
        .loadingState}
      onLoadMore={list
        .loadMore}
    >
      {(item) => (
        <Item
          key={item.name}
        >
          {item.name}
        </Item>
      )}
    </ComboBox>
  );
}