Accessibility in Blazor Bullet Chart Component

29 Nov 20243 minutes to read

The Blazor Bullet chart 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 Bullet Chart component is outlined below.

Accessibility Criteria Compatibility
WCAG 2.2 Support Yes
Section 508 Support Yes
Screen Reader Support Yes
Right-To-Left Support Yes
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 Bullet Chart component followed the WAI-ARIA patterns to meet the accessibility. The following ARIA attributes are used in the Blazor Bullet Chart component:

  • img (role)
  • button (role)
  • region (role)
  • aria-label (attribute)
  • aria-pressed (attribute)

Keyboard interaction

The Blazor Bullet Chart 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 Bullet Chart component.

Interaction Keys Description
Alt + J Moves the focus to the Bullet Chart element.
Tab Moves the focus to the next element in the Bullet Chart.
Shift + Tab Moves the focus to the previous element in the Bullet Chart.
UpArrow/Right Arrow Moves the focus to the legend right side from the selected legend.
DownArrow/Left Arrow Moves the focus to the legend left side from the selected legend.
Ctrl + P Prints the Bullet Chart.

Ensuring accessibility

The Blazor Bullet Chart component’s accessibility levels are ensured through an accessibility-checker and axe-core software tools during automated testing.

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

See also