Dropdown

API

Generated CoreAI prop summaries, not replacement type declarations. Most native DOM/event and ARIA props are omitted. ? means optional; JSDoc shows defaults, deprecations, and conditional requirements. Defaults assume the standard CoreAI provider.

Dropdown API

A Dropdown component that extends Fluent UI's Dropdown.

interface DropdownProps {
  /**
   * Controls the colors and borders of the combobox trigger.
   * @default 'outline'
   */
  appearance?: "outline" | "filled-darker" | "filled-lighter" | "underline";

  as?: "button";

  /**
   * The primary slot, the element with role="combobox"
   */
  button?: NonNullable<WithSlotShorthandValue<{ as?: "button"; } & Omit<Omit<DetailedHTMLProps<ButtonHTMLAttributes<HTMLButtonElement>, HTMLButtonElement>, "ref"> & { ref?: ((instance: HTMLButtonElement | null) => void) | RefObject<HTMLButtonElement> | null; }, "children"> & { children?: any; }> | null> | undefined;

  children?: any;

  className?: string;

  /**
   * If set, the combobox will show an icon to clear the current value.
   */
  clearable?: boolean;

  /**
   * The dropdown clear icon
   */
  clearButton?: WithSlotShorthandValue<{ as?: "button"; } & Omit<Omit<DetailedHTMLProps<ButtonHTMLAttributes<HTMLButtonElement>, HTMLButtonElement>, "ref"> & { ref?: ((instance: HTMLButtonElement | null) => void) | RefObject<HTMLButtonElement> | null; }, "children"> & { children?: any; }> | null | undefined;

  /**
   * The default open state when open is uncontrolled
   */
  defaultOpen?: boolean;

  /**
   * For an uncontrolled component, sets the initial selection.
   * If this is set, the `defaultValue` prop MUST also be set.
   */
  defaultSelectedOptions?: string[];

  /**
   * The default value displayed in the trigger input or button when the combobox's value is uncontrolled
   */
  defaultValue?: string | (readonly string[] & string);

  /**
   * Disable auto-focusing on the first item when mounting.
   * @default false
   */
  disableAutoFocus?: boolean;

  /**
   * Collapse the control to its content width when nothing is selected and
   * grow it with the typed/selected content. Only available when `label` is set.
   */
  dynamicWidth?: boolean;

  /**
   * The dropdown arrow icon
   */
  expandIcon?: WithSlotShorthandValue<{ as?: "span"; } & Omit<Omit<DetailedHTMLProps<HTMLAttributes<HTMLSpanElement>, HTMLSpanElement>, "ref"> & { ref?: ((instance: HTMLSpanElement | null) => void) | RefObject<HTMLSpanElement> | null; }, "children"> & { children?: any; }> | null | undefined;

  /**
   * Render the combobox's popup inline in the DOM.
   * This has accessibility benefits, particularly for touch screen readers.
   */
  inlinePopup?: boolean;

  /**
   * Optional inline label rendered inside the control, before the value.
   */
  label?: string;

  /**
   * The dropdown listbox slot
   */
  listbox?: WithSlotShorthandValue<Omit<ListboxSlots, "root"> & Omit<{ as?: "div"; } & Omit<Omit<DetailedHTMLProps<HTMLAttributes<HTMLDivElement>, HTMLDivElement>, "ref"> & { ref?: ((instance: HTMLDivElement | null) => void) | RefObject<HTMLDivElement> | null; }, "children"> & { children?: any; }, "ref"> & SelectionProps & { disableAutoFocus?: boolean | undefined; } & RefAttributes<HTMLDivElement>> | null | undefined;

  /**
   * Where the portal children are mounted on DOM
   * @default a new element on document.body without any styling
   */
  mountNode?: HTMLElement | { element?: HTMLElement | null; className?: string; } | null | undefined;

  /**
   * Sets the selection type to multiselect.
   * Set this to true for multiselect, even if fully controlling selection state.
   * This enables styles and accessibility properties to be set.
   * @default false
   */
  multiselect?: boolean;

  onActiveOptionChange?: EventHandler<ActiveOptionChangeData>;

  /**
   * Callback when the open/closed state of the dropdown changes
   */
  onOpenChange?: ((e: ComboboxBaseOpenEvents, data: ComboboxBaseOpenChangeData) => void);

  /**
   * Callback when an option is selected
   */
  onOptionSelect?: ((event: SelectionEvents, data: OptionOnSelectData) => void);

  /**
   * Sets the open/closed state of the dropdown.
   * Use together with onOpenChange to fully control the dropdown's visibility
   */
  open?: boolean;

  /**
   * If set, the placeholder will show when no value is selected
   */
  placeholder?: string;

  /**
   * Configure the positioning of the combobox dropdown.
   * Please refer to the [positioning documentation](https://react.fluentui.dev/?path=/docs/concepts-developer-positioning-components--default#anchor-to-target)
   * for more details.
   */
  positioning?: PositioningShorthand;

  ref?: Ref<HTMLButtonElement>;

  /**
   * The root dropdown slot
   */
  root?: NonNullable<WithSlotShorthandValue<{ as?: "div"; } & Omit<Omit<DetailedHTMLProps<HTMLAttributes<HTMLDivElement>, HTMLDivElement>, "ref"> & { ref?: ((instance: HTMLDivElement | null) => void) | RefObject<HTMLDivElement> | null; }, "children"> & { children?: any; }> | null> | undefined;

  /**
   * An array of selected option keys.
   * Use this with `onOptionSelect` to directly control the selected option(s)
   * If this is set, the `value` prop MUST also be controlled.
   */
  selectedOptions?: string[];

  /**
   * Controls the size of the combobox faceplate
   * @default 'medium'
   */
  size?: "small" | "medium" | "large";

  style?: CSSProperties;

  /**
   * Controls text overflow behavior for the value. When true, long text is truncated with an ellipsis.
   */
  truncateTextOverflow?: boolean;

  /**
   * The value displayed by the Combobox.
   * Use this with `onOptionSelect` to directly control the displayed value string
   */
  value?: string | (readonly string[] & string);
}

Listbox API

Listbox component: a standalone selection control, or the popup in a Combobox

interface ListboxProps {
  as?: "div";

  children?: any;

  className?: string;

  /**
   * For an uncontrolled component, sets the initial selection.
   * If this is set, the `defaultValue` prop MUST also be set.
   */
  defaultSelectedOptions?: string[];

  /**
   * Disable auto-focusing on the first item when mounting.
   * @default false
   */
  disableAutoFocus?: boolean;

  /**
   * Sets the selection type to multiselect.
   * Set this to true for multiselect, even if fully controlling selection state.
   * This enables styles and accessibility properties to be set.
   * @default false
   */
  multiselect?: boolean;

  /**
   * Callback when an option is selected
   */
  onOptionSelect?: ((event: SelectionEvents, data: OptionOnSelectData) => void);

  ref?: Ref<HTMLDivElement>;

  /**
   * An array of selected option keys.
   * Use this with `onOptionSelect` to directly control the selected option(s)
   * If this is set, the `value` prop MUST also be controlled.
   */
  selectedOptions?: string[];

  style?: CSSProperties;
}

Option API

Option component: a styled child option of a Combobox

interface OptionProps {
  as?: "div";

  /**
   * The check icon that is visible for selected options
   */
  checkIcon?: WithSlotShorthandValue<{ as?: "span"; } & Omit<Omit<DetailedHTMLProps<HTMLAttributes<HTMLSpanElement>, HTMLSpanElement>, "ref"> & { ref?: ((instance: HTMLSpanElement | null) => void) | RefObject<HTMLSpanElement> | null; }, "children"> & { children?: any; }> | null | undefined;

  children?: any;

  className?: string;

  /**
   * Sets an option to the `disabled` state.
   * Disabled options cannot be selected, but are still keyboard navigable
   */
  disabled?: boolean;

  ref?: Ref<HTMLDivElement>;

  style?: CSSProperties;

  /**
   * An optional override the string value of the Option's display text,
   * defaulting to the Option's child content.
   * This is used as the Dropdown button's or Combobox input's value when the option is selected,
   * and as the comparison for type-to-find keyboard functionality.
   * The string value of the Option's display text when the Option's children are not a string.
   * This is used as the Dropdown button's or Combobox input's value when the option is selected,
   * and as the comparison for type-to-find keyboard functionality.
   */
  text?: string;

  /**
   * Defines a unique identifier for the option.
   * Use this to control selectedOptions, or to get the option value in the onOptionSelect callback.
   * Defaults to `text` if not provided.
   */
  value?: string;
}