Accessibility in Blazor SplitButton Component

26 Mar 20244 minutes to read

The Blazor SplitButton component followed the accessibility guidelines and standards, including ADA, Section 508, WCAG 2.2 standards, and WCAG roles that are commonly used to evaluate accessibility.

The accessibility compliance for the Blazor SplitButton component is outlined below.

Accessibility Criteria Compatibility
WCAG 2.2 Support Yes
Section 508 Support Yes
Screen Reader Support Yes
Right-To-Left Support Not Applicable
Color Contrast Yes
Mobile Device Support Yes
Keyboard Navigation Support Yes
Axe-core Accessibility Validation Yes
Yes - All features of the component meet the requirement.
Intermediate - Some features of the component do not meet the requirement.
No - The component does not meet the requirement.

WAI-ARIA attributes

The Blazor SplitButton component followed the WAI-ARIA patterns to meet the accessibility. The following ARIA attributes are used in the Blazor SplitButton component:

Attributes Purpose
role Indicates the SplitButton component as button, SplitButton popup as menu, and the SplitButton popup action items as menuitem.
aria-haspopup Indicates the availability and type of interactive SplitButton popup element.
aria-expanded Indicates whether the SplitButton popup can be expanded or collapsed, as well as indicates whether its current state is expanded or collapsed.
aria-owns Identifies an elements in order to define a visual, functional, or contextual parent/child relationship between DOM elements where the DOM hierarchy cannot be used to represent the relationship.
aria-disabled Indicates that the element is perceivable but disabled, so it is not editable or otherwise operable.

Keyboard interaction

The Blazor SplitButton component followed the keyboard interaction guideline, making it easy for people who use assistive technologies (AT) and those who completely rely on keyboard navigation. The following keyboard shortcuts are supported by the Blazor SplitButton component.

Press To do this
Esc Closes the opened popup.
Enter Opens the popup, or activates the highlighted item and closes the popup.
Spacer Opens the popup.
Up Navigates up or to the previous action item.
Down Navigates down or to the next action item.
Alt + Up Arrow Closes the popup.
Alt + Down Arrow Opens the popup.

Ensuring accessibility

The Blazor SplitButton component’s accessibility levels are ensured through an axe-core with playwright tests.

The accessibility compliance of the Blazor SplitButton component is shown in the following sample. Open the sample in a new window to evaluate the accessibility of the Blazor SplitButton component with accessibility tools.

See also