@progress/wct-a11y-spec/dist/jquery/aria/calendar_aria.md

Contains accessibility and keyboard navigation specification of Telerik and Kendo web components.

Out of the box, the Kendo UI for jQuery Calendar provides extensive accessibility support and enables users with disabilities to acquire complete control over its features.


The Calendar 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.

### Calendar Grid Element


The Calendar Grid should follow the requirements for the `grid` role (https://www.w3.org/TR/wai-aria-1.2/#grid). It is a single-tab-stop component. All the button actions available for mouse users are also available via keyboard shortcuts.

| Selector | Attribute | Usage |
| -------- | --------- | ----- |
| `.k-calendar:not(.k-calendar-infinite):not(.k-calendar-range) .k-calendar-table` | `role=grid` | Specifies the role of the Calendar dates table. |
|  | `aria-labelledby=.k-nav-fast id` | Pointing to the current view label (e.g. `March 2022` or `2020-2029`). |
|  | `aria-activedescendant=.k-calendar-td.k-focus id` | Pointing to the currently active (focused) date/month/year/decade in the table. |
|  | `tabindex=0` | Makes the grid focusable. |
| `.k-calendar-thead` | `role=rowgroup` | There must be `<thead>` element or an element with `role="rowgroup"`. That group of rows must contain the header row of cells. |
| `.k-calendar-tbody` | `role=rowgroup` | There must be `<tbody>` element or an element with `role="rowgroup"`. That group of rows must contain the rows with date/month/tear/decade cells. |
| `.k-calendar-tr` | `role=row` | The `thead` and the `tbody` elements must contain `<tr>` elements or elements with `role="row"`. |
| `.k-content:nth-child(1) .k-calendar-th` | `scope=col` | Specifies that the header is applied to a column. |
|  | `aria-label` | Specifies the full name of the day of the week (the column header). |
|  | `role=columnheader` or `nodeName=th` | The row in the `<thead>` must contain `<th>` elements or elements with `role="columnheader"`. |
| `.k-calendar-td` | `role=gridcell` | The rows in the `<tbody>` must contain `<td>` elements or elements with `role="gridcell"`. |
| `.k-calendar-td.k-selected` | `aria-selected=true` | Specifies whether the date is selected or not. |
| `.k-calendar-td.k-disabled` | `aria-disabled=true` | When a date is not available for selection, its gridcell element must have the attribute set to `true`. |
| `.k-year .k-calendar-td` | `aria-label` | Applicable in year view - for better context contains the full name of the month. May also be applied in month view to specify the full text for a date. |

### Calendar Links and Buttons

| Selector | Attribute | Usage |
| -------- | --------- | ----- |
| `.k-nav-next,.k-nav-prev` | `role=button` or `nodeName=button` | Previous / Next buttons must either be `<button>` elements or have the appropriate role. |
|  | `aria-label` or `title` | Previous and Next buttons must have descriptive text set as they contain only an icon (no text). |
|  | `tabindex=-1` | The buttons must not be focusable. |
| `.k-nav-next.k-disabled,.k-nav-prev.k-disabled` | `aria-disabled=true` | When navigation is not allowed outside the current month/year/decade the Previous and Next buttons should have this attribute set to `true`. |
| `.k-nav-fast` | `role=button` or `nodeName=button` | Go to parent view button must either be a `<button>` element or must have the appropriate role. |
|  | `aria-label` or `title` | Go to parent view button must have descriptive text set explaining its purpose. |
|  | `tabindex=-1` | The buttons must not be focusable. |
| `.k-nav-fast.k-disabled` | `aria-disabled` | When navigation is not allowed outside the current view the button should have this attribute set to `true`. |
| `.k-nav-today` | `role=link` or `nodeName=a` | Today link must either be `<a>` element or must have the appropriate role. |
|  | `tabindex=-1` | The link must not be focusable. |

## Resources

[ARIA practices Date Picker Dialog Example](https://www.w3.org/WAI/ARIA/apg/example-index/dialog-modal/datepicker-dialog.html)

## Section 508


The Calendar is fully compliant with the [Section 508 requirements](http://www.section508.gov/).

## Testing


The Calendar has been extensively tested automatically with [axe-core](https://github.com/dequelabs/axe-core) and manually with the most popular screen readers.

> To report any accessibility issues, contact the team through the [Telerik Support System](https://www.telerik.com/account/support-center).

### Screen Readers


The Calendar has been tested with the following screen readers and browsers combinations:

| Environment | Tool |
| ----------- | ---- |
| Firefox | NVDA |
| Chrome | JAWS |
| Microsoft Edge | JAWS |