Listbox

Accessible, unstyled Listbox with active-descendant focus and typed selection.


Package	`@vizejs/ui/listbox`
Maturity	stable
Own the source	`vize lib pull listbox`
Requires	collection, composite-navigation, context, controllable-state, id, typeahead
Aliases	listbox, option list, single select, multi select
Covers	WAI-ARIA listbox pattern, React Aria ListBox, Ariakit Select, Reka UI Listbox

Usage

import { Listbox, ListboxItem } from "@vizejs/ui/listbox";

Or copy the source into your project with vize lib pull listbox (see Source Distribution).

API

`Listbox`

Source: src/families/selection/listbox/listbox.vue

Props

Prop	Type	Default	Description
`id`	`string \| null`	`undefined`	Consumer-owned listbox id. `null` and `undefined` select a deterministic fallback.
`modelValue`	`ListboxValue`	`undefined`	Controlled selected value. `undefined` selects uncontrolled behavior.
`defaultValue`	`ListboxValue`	`undefined`	Initial value for uncontrolled use and the value restored by reset.
`disabled`	`boolean`	`false`	Disable every option and remove the listbox from sequential focus order.
`required`	`boolean`	`false`	Mark the listbox as required for accessibility and validation summaries.
`selectionMode`	`ListboxSelectionMode`	`"single"`	Select one option or a set of options.
`orientation`	`ListboxOrientation`	`"vertical"`	Directional layout hint used by arrow-key navigation.
`direction`	`ListboxDirection`	`"ltr"`	Reading direction used by horizontal arrow-key navigation.
`loop`	`boolean`	`false`	Wrap arrow-key navigation at collection boundaries.
`typeahead`	`boolean`	`true`	Enable locale-aware typeahead over option text.
`typeaheadTimeout`	`number`	`500`	Idle time before buffered typeahead starts a new query.
`ariaLabel`	`string`	`undefined`	Accessible name when no visible label or `aria-labelledby` supplies one.
`ariaLabelledby`	`string`	`undefined`	Space-separated ids that label the listbox.
`ariaDescribedby`	`string`	`undefined`	Space-separated ids that describe the listbox.
`ariaErrormessage`	`string`	`undefined`	Id of the validation error message used while invalid.
`ariaInvalid`	`ListboxAriaInvalid`	`false`	Invalid state announced to assistive technology.

Events

Event	Payload	Description
`update:modelValue`	`[value: ListboxValue]`	Fired when the selected value requests a new controlled value.
`change`	`[value: ListboxValue, previous: ListboxValue, nativeEvent: Event]`	Fired after user selection requests a distinct Listbox value.

Slots

Slot	Slot props	Description
`default`	`ListboxSlotState`	Compound ListboxItem options. Receives current selection and focus state.
`empty`	`ListboxSlotState`	Empty collection fallback rendered when no options are registered.

Exposed

Member	Type	Description
`value`	`ListboxValue`	Current selected value, or an array when `selectionMode` is `"multiple"`.
`selectedValues`	`readonly string[]`	Selected values as a stable readonly array.
`activeValue`	`string \| null`	Current active option value, or `null` when no option is navigable.
`disabled`	`boolean`	Whether every item is disabled by the listbox.
`required`	`boolean`	Whether the listbox participates in required validation semantics.
`invalid`	`boolean`	Whether the listbox is currently marked invalid.
`selectionMode`	`ListboxSelectionMode`	Whether single or multiple selection is active.
`orientation`	`ListboxOrientation`	Directional layout hint for ARIA and consumer-owned styles.
`direction`	`ListboxDirection`	Reading direction used by horizontal keyboard navigation.
`state`	`ListboxState`	Stable state token for styling and tests.
`element`	`HTMLDivElement \| null`	Rendered listbox element.
`id`	`string`	Root-owned id for the listbox.
`focus`	`(options?: FocusOptions) => void`	Move DOM focus to the listbox focus owner.
`navigate`	`( command: "first" \| "last" \| "next" \| "page-next" \| "page-previous" \| "previous", nativeEvent?: Event \| null, ) => string \| null`	Move the active option by command and report the resulting option value.
`setActiveValue`	`(value: string \| null) => boolean`	Request an active option update and report whether it changed.
`setValue`	`(value: ListboxValue) => boolean`	Request a selected value update and report whether it differs.
`selectValue`	`(value: string, nativeEvent?: Event \| null) => boolean`	Select an option value and report whether the selection changed.
`toggleValue`	`(value: string, nativeEvent?: Event \| null) => boolean`	Toggle an option value in the current selection model.
`clear`	`() => boolean`	Clear the current selection and report whether it changed.
`reset`	`() => boolean`	Restore the current default value and report whether it changed.

`ListboxItem`

Source: src/families/selection/listbox/listbox-item.vue

Props

Prop	Type	Default	Description
`id`	`string \| null`	`undefined`	Consumer-owned option id. `null` and `undefined` select a deterministic fallback.
`value` (required)	`string`	`required`	Stable option value used for selection and collection identity.
`disabled`	`boolean`	`false`	Disable this option while preserving the rest of the listbox.
`textValue`	`string \| null`	`undefined`	Explicit typeahead text. `null` and `undefined` select accessible DOM text extraction.
`order`	`number`	`undefined`	Deterministic order for virtualized or server-only options.
`ariaLabel`	`string`	`undefined`	Accessible name when no option text supplies one.
`ariaLabelledby`	`string`	`undefined`	Space-separated ids that label this option.
`ariaDescribedby`	`string`	`undefined`	Space-separated ids that describe this option.

Slots

Slot	Slot props	Description
`default`	`ListboxItemSlotState`	Option content. Receives active, selected, disabled, and mode state.
`indicator`	`ListboxItemSlotState`	Optional selection indicator controlled by the consumer.

Exposed

Member	Type	Description
`value`	`string`	Item value used for selection and active-descendant ownership.
`active`	`boolean`	Whether this item is the active option.
`selected`	`boolean`	Whether this item is currently selected.
`disabled`	`boolean`	Whether this item is disabled by itself or the listbox.
`selectionMode`	`ListboxSelectionMode`	Whether single or multiple selection is active.
`state`	`ListboxItemState`	Stable state token for styling and tests.
`element`	`HTMLDivElement \| null`	Rendered option element.
`focus`	`(options?: FocusOptions) => void`	Move active-descendant focus to this item through the root listbox.
`select`	`() => boolean`	Select this item and report whether the selection changed.

Behavior

Contract

Listbox is a headless compound primitive for option selection. listbox.vue renders role="listbox" and owns DOM focus through aria-activedescendant. listbox-item.vue renders role="option" and registers with the local collection registry for ordering, typeahead, and disabled-state recovery. Styling is owned by consumers through parts, slots, CSS, and data attributes.

Public Surface

Surface	Contract
`Listbox` props	`id`, `modelValue`, `defaultValue`, `disabled`, `required`, `selectionMode`, `orientation`, `direction`, `loop`, `typeahead`, `typeaheadTimeout`, `ariaLabel`, `ariaLabelledby`, `ariaDescribedby`, `ariaErrormessage`, `ariaInvalid`
`Listbox` emits	`update:modelValue(value)`, `change(value, previous, nativeEvent)`
`Listbox` slots	`default(state)`, `empty(state)`
`Listbox` expose	`element`, `id`, `value`, `selectedValues`, `activeValue`, `disabled`, `required`, `invalid`, `selectionMode`, `orientation`, `direction`, `state`, `focus`, `navigate`, `setActiveValue`, `setValue`, `selectValue`, `toggleValue`, `clear`, `reset`
`ListboxItem` props	`id`, `value`, `disabled`, `textValue`, `order`, `ariaLabel`, `ariaLabelledby`, `ariaDescribedby`
`ListboxItem` slots	`default(state)`, `indicator(state)`
`ListboxItem` expose	`element`, `value`, `active`, `selected`, `disabled`, `selectionMode`, `state`, `focus`, `select`
Parts	`root`, `item`
Root data attributes	`data-vize-ui="listbox"`, `data-state`, `data-disabled`, `data-required`, `data-invalid`, `data-orientation`, `data-selection-mode`, `data-selection-count`, `data-value`
Item data attributes	`data-vize-ui="listbox-item"`, `data-state`, `data-value`, `data-selected`, `data-active`, `data-disabled`, `data-selection-mode`

Normative Behavior

Input	Single Selection	Multiple Selection
Tab	Moves focus to the listbox when enabled. Disabled roots are skipped.	Same as single.
Arrow Down / Arrow Right	Moves the active option to the next navigable item for matching orientation.	Same as single.
Arrow Up / Arrow Left	Moves the active option to the previous navigable item for matching orientation.	Same as single.
Home / End	Moves the active option to the first or last navigable item.	Same as single.
Printable grapheme	Runs locale-aware typeahead over option text and moves only active state.	Same as single.
Enter / Space	Selects the active option.	Toggles the active option.
Pointer click	Selects the clicked enabled option.	Toggles the clicked enabled option.
Disabled item	Is exposed with `aria-disabled`, omitted from active navigation and typeahead, and cannot change selection.	Same as single.
Controlled value	Emits the requested value and waits for the parent to accept it.	Same as single with readonly arrays.
Uncontrolled value	Mutates internal state, emits the requested value, and can reset to `defaultValue`.	Same as single with readonly arrays.

SSR

Generated root and option ids use the deterministic-id primitive. Isolated SSR requests must produce byte-identical markup for the same tree, and hydration must not replace the rendered root or option ids.