@progress/wct-a11y-spec/dist/mvccore/aria/diagram_aria.md

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

Out of the box, the {{ site.product }} Diagram provides extensive accessibility support and enables users with disabilities to acquire complete control over its features.


The Diagram 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.


The Diagram is an interactive Graphics Document (https://www.w3.org/TR/graphics-aria-1.0/#graphics-document). Users can navigate between shapes and connections using keyboard, and can move selected shapes with keyboard shortcuts.

| Selector | Attribute | Usage |
| -------- | --------- | ----- |
| `.k-diagram` | `role=graphics-document` | Indicates that the Diagram element is a Graphics Document. |
|  | `aria-roledescription` | User-set value that clarifies the type of Diagram to screen reader users. |
|  | `aria-label` | Announces the user-set `aria-label` of the Diagram. |
|  | `aria-activedescendant=.k-focus id` | Points to the currently focused shape or connection element. The focused element is the one receiving keyboard interaction. |
| `[aria-roledescription='Shape']` | `role=graphics-symbol` | Specifies the role of the Diagram shape elements. |
|  | `aria-roledescription=Shape` | Describes the role of the Diagram shape elements. |
|  | `aria-label` | User-set value that describes the shape to screen reader users. |
| `[aria-roledescription='Connection']` | `role=graphics-symbol` | Specifies the role of the Diagram connection elements. |
|  | `aria-roledescription=Connection` | Describes the role of the Diagram connection elements. |
|  | `aria-label` | User-set value that describes the connection to screen reader users. |


Note: The Diagram uses the active descendant pattern for keyboard navigation. The container element maintains focus while `aria-activedescendant` points to the currently active shape or connection. The active element receives the `.k-focus` class for visual styling.

## Resources

[WAI-ARIA Graphics Module](https://www.w3.org/TR/graphics-aria-1.0/)

[Accessibility Style Guide: SVGs](https://a11y-style-guide.com/style-guide/section-media.html#kssref-media-svgs)

## Section 508


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

## Testing


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

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