Blazor TimePicker Accessibility
The Telerik UI for Blazor TimePicker 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
TimePicker wrapper
| Selector | Attribute | Usage |
|---|---|---|
| .k-input-inner | role=combobox |
The input element should follow the combobox specification. |
label for or aria-label or aria-labelledby
|
The input needs an accessible name to be assigned to it. | |
aria-expanded=true/false |
Announces whether the Popup is visible or not. | |
aria-haspopup=dialog |
Indicates the component has a Dialog Popup. | |
aria-controls=.k-animation-container id |
Points to the popup element. Signifies that the combobox element controls the dialog popup. |
|
readonly or aria-readonly
|
Attribute is rendered only when the DatePicker is readonly. | |
| .k-invalid .k-input-inner,.ng-invalid .k-input-inner | aria-invalid=true |
Attribute is rendered only when the picker 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 DatePicker is disabled. |
| .k-input-button |
role=button or nodeName=button
|
The element must either be a <button> element or must have role=button assigned. |
aria-label |
The button needs an accessible name to be assigned to it. | |
tabindex=-1 |
Button element must not be focusable. |
List Elements on the Popup
| Selector | Attribute | Usage |
|---|---|---|
| .k-time-list | role=listbox |
The timelist elements must have listbox role assigned. |
aria-label or aria-labelledby
|
The listbox needs an accessible name to be assigned to it. | |
| .k-reset | role=none/presentation |
The k-rest <ul> element semantic meaning must be removed from the accessibility tree. |
| .k-item | role=option |
The available options in the listbox must be marked as such. |
aria-selected=true |
Selected option must have its aria-selected attribute set to true. |
Resources
WAI-ARIA specification for combobox
WAI-ARIA specification for spinbutton
Section 508
The TimePicker 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 |