Blazor TimePicker Accessibility
Out of the box, the Telerik UI for Blazor TimePicker provides extensive accessibility support and enables users with disabilities to acquire complete control over its features.
The TimePicker is compliant with the Web Content Accessibility Guidelines (WCAG) 2.2 AA standards and Section 508 requirements, follows the Web Accessibility Initiative - Accessible Rich Internet Applications (WAI-ARIA) best practices for implementing the 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.
TimePicker Wrapping Element
| 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-required=true |
The attribute is rendered only when the TimePicker is in a form HTML element and announces the required state of the component. |
|
aria-describedby=.k-form-hint id/.k-form-error id |
Points to the hint for the input, or if the input is invalid, to the error message. This attribute should only be present when a hint is set or when the input is invalid. | |
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/false |
Selected option must have its aria-selected attribute set to true. |
Resources
WAI-ARIA specification for combobox
WAI-ARIA specification for listbox
Section 508
The TimePicker is fully compliant with the Section 508 requirements.
Testing
The TimePicker has been extensively tested automatically with axe-core and manually with the most popular screen readers.
To report any accessibility issues, contact the team through the Telerik Support System.
Screen Readers
The TimePicker has been tested with the following screen readers and browsers combinations:
| Environment | Tool |
|---|---|
| Firefox | NVDA |
| Chrome | JAWS |
| Microsoft Edge | JAWS |