TimePicker Accessibility
Out of the box, the Telerik UI for ASP.NET Core 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-controls=.k-animation-container id | Points to the popup element. Signifies that the combobox element controls the listbox 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. | |
.k-timepicker.k-disabled .k-button | disabled or aria-disabled | Attribute is rendered only when the picker is disabled. |
ListBox Popup
| Selector | Attribute | Usage |
|---|---|---|
.k-animation-container | role=region | When the component container is appended to the <body> element of the document, it requires you to assing a landmark role to it. Otherwise, append it to an element with an appropriate landmark role. |
aria-label or aria-labelledby | When the container has a region role assigned, povides a label. | |
.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. |
id | When grouped, the list items must have an id attribute specified, so that the aria-owns attribute of their group header elements (with role=group) point to that ids. | |
aria-describedby | When grouped, the list items must have an aria-describedby attribute pointing to the id of the k-list-item-text element in their k-list-group-item. | |
.k-list-item.k-selected | aria-selected=true | Indicates the selected state of the item. |
.k-list-group-item | role=group | The group elements in the popup list must be have role=group. |
aria-owns | The group elements in the popup list must own the list items belonging to their group. | |
.k-list-group-item>.k-list-item-text | id | The k-list-item-text elements of the k-list-group-item must have an id specified. The aria-labelledby attribute of the list items in the group must point to that id. |
Resources
WAI-ARIA specification for combobox
WAI-ARIA specification for listbox
WAI-ARIA practices select only combobox example
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 |
Test Example
To test the TimePicker component, refer to the TimePicker Accessibility Demo.
Keyboard Navigation
For details on how the TimePicker keyboard navigation works, refer to the TimePicker Keyboard Navigation article.