@progress/wct-a11y-spec
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Contains accessibility and keyboard navigation specification of Telerik and Kendo web components.
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Markdown
Out of the box, the Kendo UI for jQuery 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. |
| | `tabindex=0` | Makes the ListBox focusable. |
| `.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. |
### 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 |