@progress/wct-a11y-spec/dist/mvccore/aria/listbox_aria.md

Contains accessibility and keyboard navigation specification of Telerik and Kendo web components.

Out of the box, the {{ site.product }} ListBox provides extensive accessibility support and enables users with disabilities to acquire complete control over its features.


The ListBox is compliant with the [Web Content Accessibility Guidelines (WCAG) 2.2 AA](https://www.w3.org/TR/WCAG22/) standards and [Section 508](https://www.section508.gov/) requirements, follows the [Web Accessibility Initiative - Accessible Rich Internet Applications (WAI-ARIA)](https://www.w3.org/WAI/ARIA/apg/) best practices for implementing the [keyboard navigation](#keyboard-navigation) for its `component` role, provides options for managing its focus and is tested against the most popular screen readers.

## WAI-ARIA


This section lists the selectors, attributes, and behavior patterns supported by the component and its composite elements, if any.

### ListBox List

| Selector | Attribute | Usage |
| -------- | --------- | ----- |
| `.k-list-ul` | `role=listbox` | Specifies the role of the ListBox `ul` element. |
|  | `aria-label` or `aria-labelledby` | Adds a label to the `ul` element of the ListBox. |
|  | `aria-multiselectable=true` | Signifies that the ListBox allows multiple selection. Present only when the multiple selection of the component is enabled. |
| `.k-list-item` | `role=option` | Specifies the role of the ListBox `item` element. |
|  | `aria-selected=true/false` | Set to `true` if the item is selected. |
|  | `tabindex=0` | The focused listbox item should have tabindex 0, while all others -1. |

### ListBox Toolbar


The ListBox toolbar follows the specification of the ToolBar component.

[ToolBar accessibility specification]({{toolbar_a11y_link}})

| Selector | Attribute | Usage |
| -------- | --------- | ----- |
| `.k-listbox-actions` | `role=toolbar` | The toolbar is a collection of command buttons. |
|  | `aria-label` | Clarifies the purpose of the toolbar. |
|  | `aria-controls=.k-list-ul id` | Points to the ids of the `role=listbox` elements that are being controlled by the ToolBar. |
| `.k-listbox-actions .k-button` | `aria-label` or `title` | All buttons in the ToolBar must have lables, so that their purpose is clear. |

## Resources

[WAI-ARIA Authoring Practices: ListBox Pattern](https://www.w3.org/WAI/ARIA/apg/patterns/listbox/)

## Section 508


The ListBox is fully compliant with the [Section 508 requirements](http://www.section508.gov/).

## Testing


The ListBox has been extensively tested automatically with [axe-core](https://github.com/dequelabs/axe-core) and manually with the most popular screen readers.

> To report any accessibility issues, contact the team through the [Telerik Support System](https://www.telerik.com/account/support-center).

### Screen Readers


The ListBox has been tested with the following screen readers and browsers combinations:

| Environment | Tool |
| ----------- | ---- |
| Firefox | NVDA |
| Chrome | JAWS |
| Microsoft Edge | JAWS |