Out of the box, the Kendo React DropDownTree provides extensive accessibility support and enables users with disabilities to acquire complete control over its features. The DropDownTree 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. ### DropDownTree Wrapping Element The following table summarizes the selectors and attributes supported by the DropDownTree wrapper element: | Selector | Attribute | Usage | | -------- | --------- | ----- | | `.k-dropdowntree` | `role=combobox` | Announces the drop-down element of the button. | | | `label for` or `aria-label` or `aria-labelledby` | The input requires an accessible name that will be assigned to it. | | | `aria-haspopup=tree` | Indicates the presence of a popup with a tree navigation. | | | `aria-expanded=true/false` | Announces the state of the popup visibility. | | | `aria-controls=.k-treeview id` | Points to the `treeview` element. Signifies that the `combobox` element controls the `treeview` one. | | | `aria-describedby=.k-input-inner id` | Announces the selected value of the drop-down. | | | `aria-readonly=true` | The attribute is rendered only when the drop-down is read-only. | | | `aria-autocomplete=list` | The attribute is rendered and the value is set to `list` when the filtering feature is enabled. | | | `aria-invalid=true` | The attribute is rendered only when the drop-down is in a form and announces the valid state of the component. | | | `aria-busy=true` | The attribute is rendered only when the drop-down is loading data. | | | `tabindex=0` | The element must be focusable. | | `.k-dropdowntree.k-disabled` | `aria-disabled=true` | The attribute is rendered only when the drop-down is disabled. | | `.k-input-button` | `role=button` or `nodeName=button` | The element must either be a `