@progress/wct-a11y-spec
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Contains accessibility and keyboard navigation specification of Telerik and Kendo web components.
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Markdown
Out of the box, the Telerik UI for Blazor ExpansionPanel provides extensive accessibility support and enables users with disabilities to acquire complete control over its features.
The ExpansionPanel 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.
### ExpansionPanel Wrapping Element
| Selector | Attribute | Usage |
| -------- | --------- | ----- |
| `.k-expander-header` | `role=button` | Sets the proper role for the ExpansionPanel component. |
| | `aria-controls=.k-expander-content-wrapper id` | Points to the controlled element based on the given `id`. |
| | `aria-expanded=true/false` | Indicates the expanded state of the ExpansionPanel. |
| | `tabindex=0` | The element should be focusable. |
| `.k-disabled .k-expander-header` | `aria-disabled=true/false` | The attribute is rendered only when the ExpansionPanel is disabled. |
## Resources
[ARIA Practices: Accordion Pattern](https://www.w3.org/WAI/ARIA/apg/patterns/accordion/)
## Section 508
The ExpansionPanel is fully compliant with the [Section 508 requirements](http://www.section508.gov/).
## Testing
The ExpansionPanel 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 ExpansionPanel has been tested with the following screen readers and browsers combinations:
| Environment | Tool |
| ----------- | ---- |
| Firefox | NVDA |
| Chrome | JAWS |
| Microsoft Edge | JAWS |