@progress/wct-a11y-spec

[ { "h2": "Accessibility Support" }, { "p": "Out of the box, the Telerik and Kendo UI Calendar provides extensive accessibility support and enables users with disabilities to acquire complete control over its features." }, { "p": "The Calendar is compliant with the [Web Content Accessibility Guidelines (WCAG) 2.2 standards](https://www.w3.org/TR/WCAG22/) and [Section 508](http://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](#managing-the-focus) and is tested against the most popular [screen readers](#screen-readers)." }, { "h3": "WAI-ARIA" }, { "p": "This section lists the selectors, attributes, and behavior patterns supported by the component and its composite elements, if any." }, { "h4": "Calendar Grid Element" }, { "p": "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." }, { "table": { "headers": [ "Selector", "Attribute", "Usage" ], "rows": [ { "Selector": "`.k-calendar:not(.k-calendar-infinite):not(.k-calendar-range) .k-calendar-table`", "Attribute": "`role=grid`", "Usage": "Specifies the role of the Calendar dates table." }, { "Selector": "", "Attribute": "`aria-labelledby=.k-nav-fast id`", "Usage": "Pointing to the current view label (e.g. `March 2022` or `2020-2029`)." }, { "Selector": "", "Attribute": "`aria-activedescendant=.k-calendar-td.k-focus id`", "Usage": "Pointing to the currently active (focused) date/month/year/decade in the table." }, { "Selector": "", "Attribute": "`tabindex=0`", "Usage": "Makes the grid focusable." }, { "Selector": "`.k-calendar-thead`", "Attribute": "`role=rowgroup`", "Usage": "There must be `<thead>` element or an element with `role=\"rowgroup\"`. That group of rows must contain the header row of cells." }, { "Selector": "`.k-calendar-tbody`", "Attribute": "`role=rowgroup`", "Usage": "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." }, { "Selector": "`.k-calendar-tr`", "Attribute": "`role=row`", "Usage": "The `thead` and the `tbody` elements must contain `<tr>` elements or elements with `role=\"row\"`." }, { "Selector": "`.k-content:nth-child(1) .k-calendar-th`", "Attribute": "`scope=col`", "Usage": "Specifies that the header is applied to a column." }, { "Selector": "", "Attribute": "`aria-label`", "Usage": "Specifies the full name of the day of the week (the column header)." }, { "Selector": "", "Attribute": "`role=columnheader` or `nodeName=th`", "Usage": "The row in the `<thead>` must contain `<th>` elements or elements with `role=\"columnheader\"`." }, { "Selector": "`.k-calendar-td`", "Attribute": "`role=gridcell`", "Usage": "The rows in the `<tbody>` must contain `<td>` elements or elements with `role=\"gridcell\"`." }, { "Selector": "`.k-calendar-td.k-selected`", "Attribute": "`aria-selected=true`", "Usage": "Specifies whether the date is selected or not." }, { "Selector": "`.k-calendar-td.k-disabled`", "Attribute": "`aria-disabled=true`", "Usage": "When a date is not available for selection, its gridcell element must have the attribute set to `true`." }, { "Selector": "`.k-year .k-calendar-td`", "Attribute": "`aria-label`", "Usage": "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." } ] } }, { "h4": "Calendar Links and Buttons" }, { "table": { "headers": [ "Selector", "Attribute", "Usage" ], "rows": [ { "Selector": "`.k-nav-next,.k-nav-prev`", "Attribute": "`role=button` or `nodeName=button`", "Usage": "Previous / Next buttons must either be `<button>` elements or have the appropriate role." }, { "Selector": "", "Attribute": "`aria-label` or `title`", "Usage": "Previous and Next buttons must have descriptive text set as they contain only an icon (no text)." }, { "Selector": "", "Attribute": "`tabindex=-1`", "Usage": "The buttons must not be focusable." }, { "Selector": "`.k-nav-next.k-disabled,.k-nav-prev.k-disabled`", "Attribute": "`aria-disabled=true`", "Usage": "When navigation is not allowed outside the current month/year/decade the Previous and Next buttons should have this attribute set to `true`." }, { "Selector": "`.k-nav-fast`", "Attribute": "`role=button` or `nodeName=button`", "Usage": "Go to parent view button must either be a `<button>` element or must have the appropriate role." }, { "Selector": "", "Attribute": "`aria-label` or `title`", "Usage": "Go to parent view button must have descriptive text set explaining its purpose." }, { "Selector": "", "Attribute": "`tabindex=-1`", "Usage": "The buttons must not be focusable." }, { "Selector": "`.k-nav-fast.k-disabled`", "Attribute": "`aria-disabled`", "Usage": "When navigation is not allowed outside the current view the button should have this attribute set to `true`." }, { "Selector": "`.k-nav-today`", "Attribute": "`role=link` or `nodeName=a`", "Usage": "Today link must either be `<a>` element or must have the appropriate role." }, { "Selector": "", "Attribute": "`tabindex=-1`", "Usage": "The link must not be focusable." } ] } }, { "h3": "Managing the Focus" }, { "p": "The component is a single tab stop with focusable `<table>` (the element with `role=\"grid\"`). It uses `aria-activedescendant` to keep the info for the currently focused date cell." }, { "h3": "Keyboard Shortcuts" }, { "p": "The Calendar implements the same keyboard navigation as the **InfiniteCalendar** component." }, { "link": { "title": "InfiniteCalendar specification", "source": "{{infinitecalendar_kb_link}}" } }, { "p": "In addition to that it also implements the following shortcuts:" }, { "table": { "headers": [ "Shortcut", "Behavior" ], "rows": [ { "Shortcut": "`Ctrl/Cmd(Mac) + Right Arrow`", "Behavior": "Navigates to the next period." }, { "Shortcut": "`Ctrl/Cmd(Mac) + Left Arrow`", "Behavior": "Navigates to the previous period." } ] } }, { "h3": "Testing" }, { "p": "The Calendar has been extensively tested automatically with [axe-core](https://github.com/dequelabs/axe-core) and manually with the most popular screen readers." }, { "h3": "Screen Readers" }, { "p": "The Calendar has been tested with the following screen readers and browsers combinations:" }, { "table": { "headers": [ "Environment", "Tool" ], "rows": [ [ "Firefox", "NVDA" ], [ "Chrome", "JAWS" ], [ "Microsoft Edge", "JAWS" ] ] } }, { "h3": "Resources" }, { "ul": [ { "link": { "source": "https://www.w3.org/WAI/ARIA/apg/example-index/dialog-modal/datepicker-dialog.html", "title": "ARIA practices Date Picker Dialog Example" } }, { "link": { "source": "https://www.w3.org/WAI/ARIA/apg/patterns/dialog-modal/examples/datepicker-dialog/#kbd_label_5", "title": "ARIA Authoring Practices: Date Picker Dialog: Date Grid" } } ] } ]