Blazor AutoComplete Accessibility
The Telerik UI for Blazor AutoComplete component is WCAG 2.1 AA and Section 508 compliant. The component also follows the WAI-ARIA best practices for implementing the keyboard navigation for its component role, and is tested against the popular screen readers.
Wai-Aria
AutoComplete wrapper
| Selector | Attribute | Usage |
|---|---|---|
| .k-input-inner | role=combobox |
Announces the presence of a autocomplete as inner element of the autocomplete used for filtering. |
label for or aria-label or aria-labelledby
|
The input needs an accessible name to be assigned to it. | |
aria-haspopup=listbox |
Indicates the component has a listbox Popup. | |
aria-expanded=true/false |
Announces the state of the visibility of the popup. | |
aria-controls=.k-animation-container id |
Points to the popup element. Signifies that the combobox element controls the listbox. |
|
aria-activedescendant=.k-list-item.k-focus id |
Points to the focused item in the popup. The focused item is changed via keyboard navigation. If the popup is not visible, the attribute should not point to any element or should be removed. | |
aria-autocomplete=list |
Attribute is rendered and value is set to list when filtering feature is enabled. | |
aria-autocomplete=both |
Attribute is rendered and value is set to both when both filtering and suggest features are enabled. | |
aria-autocomplete=inline |
Attribute is rendered and value is set to only suggest feature is enabled. | |
readonly or aria-readonly
|
Attribute is rendered only when the autocomplete is readonly. | |
aria-busy=true |
Attribute is rendered only when the autocomplete is loading data. | |
tabindex=0 |
The element must be focusable. | |
| .k-invalid .k-input-inner,.ng-invalid .k-input-inner | aria-invalid=true |
Attribute is rendered only when the autocomplete is in form and announces the valid state of the component. |
| .k-disabled .k-input-inner |
disabled=disabled or aria-disabled=true
|
Attribute is rendered only when the autocomplete is disabled. |
ListBox Popup
The Popup element of the component should implement the specification for a Popup List component.
| Selector | Attribute | Usage |
|---|---|---|
| .k-animation-container | role=region |
When the component container is appended to the <body> element of the document, it needs a landmark role to be assigned to it. Otherwise, it should be appended to an element with an appropriate landmark role. |
aria-label or aria-labelledby
|
Provides a label when the container has a region role assigned. |
|
| .k-list-ul | role=listbox |
Identifies the ul element as a listbox. |
aria-label or aria-labelledby
|
Provides a label for the listbox of the combobox. | |
| .k-list-item | role=option |
Identifies the li element as a listbox option. |
| .k-list-item.k-selected | aria-selected=true |
Indicates the selected state of the item. |
Resources
ARIA practices: Editable Combobox With Both List and Inline Autocomplete Example
ARIA Practices: Editable Combobox With List Autocomplete Example
Section 508
The AutoComplete is compliant with the Section 508 requirements
Testing
The component has been extensively tested automatically with static code analyzers and manually with the most popular screen readers.
Any Accessibility Issues could be reported in Telerik Support System.
Screen Readers
| Environment | Tool |
|---|---|
| Firefox | NVDA |
| Chrome | JAWS |
| Microsoft Edge | JAWS |