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@progress/wct-a11y-spec

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

github.com/telerik/web-components-ux/docs

telerik/web-components-ux

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The Kendo React MultiSelect component is [WCAG 2.1 AAA](https://www.w3.org/TR/WCAG21/) and [Section 508](http://www.section508.gov/) compliant. The component also follows the [WAI-ARIA best practices](https://www.w3.org/WAI/ARIA/apg/) for implementing the keyboard navigation for its component role, and is tested against the popular screen readers. ## Wai-Aria ### MultiSelect wrapper | Selector | Attribute | Usage | | -------- | --------- | ----- | | .k-input-inner | `role=combobox` | Announces the presence of a combobox as inner element of the multiselect used for filtering. | | | `label for=` or `aria-label` or `aria-labelledby` | The input needs an accessible name to be assigned to it. | | | `aria-haspopup=listbox` | Indicates the presence of a listbox popup. | | | `aria-expanded=true/false` | Announces the state of the visibility of the popup. | | | `aria-controls=.k-list-ul id` | Points to the popup element. Signifies that the `combobox` element controls the `listbox`. | | | `aria-autocomplete=list` | Attribute is rendered and value is set to list when **filtering** feature is enabled. | | | `aria-describedby=.k-chip-list id` | Points to the taglist element that contains the selected items. | | | `aria-activedescendent=.k-list-item id` | Points to the focused item. Either an item from the popup, or a tag item from the selected items. The focused item is changed via keyboard navigation. If the focus is not currently on a tag item, and the popup is not visible, the attribute should not point to any element or should be removed. | | | `aria-disabled=true` | Attribute is rendered only when the multiselect is disabled. | | | `aria-readonly=true` | Attribute is rendered only when the multiselect is readonly. | | | `aria-invalid=true` | Attribute is rendered only when the multiselect is in form and announces the valid state of the component. | | | `aria-busy=true` | Attribute is rendered only when the multiselect is loading data. | | | `tabindex=0` | The element should be focusable. | | .k-input-button | `role=button` | The element should either be a `<button>` element or should have `role="button"` assigned. | | | `aria-label` | The button needs an accessible name to be assigned to it. | | | `tabindex=-1` | Button element should not be focusable. | ### Popup | Selector | Attribute | Usage | | -------- | --------- | ----- | | .k-list-ul | `aria-multiselectable=true` | Announces multiselection of the listbox popup. | The ListBox placed in the Popup element of the component should implement the specification for a **PopuList** component. | Selector | Attribute | Usage | | -------- | --------- | ----- | | .k-animation-container | `role=region` | When the component container is appended to the `<body>` element of the document, it needs a landmark role to be assigned to it. Otherwise, it should be appended to an element with an appropriate landmark role. | | | `aria-label` or `aria-labelledby` | Provides a label when the container has a `region` role assigned. | | .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. | | .k-list-item.k-selected | `aria-selected=true` | Indicates the selected state of the item. | ## Resources [ARIA practices: Select-Only Combobox Example](https://www.w3.org/WAI/ARIA/apg/example-index/combobox/combobox-select-only.html) [ARIA Practices: Scrollable Listbox Example](https://www.w3.org/WAI/ARIA/apg/example-index/listbox/listbox-scrollable.html) ## Section 508 The MultiSelect is compliant with the [Section 508](http://www.section508.gov/) 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](https://www.telerik.com/account/support-center). ### Screen Readers | Environment | Tool | | ----------- | ---- | | Firefox | NVDA | | Chrome | JAWS | | Microsoft Edge | JAWS |