Accessibility in TypeScript Sankey Chart component
18 Nov 20184 minutes to read
The Sankey Chart component follows the accessibility guidelines and standards, including ADA, Section 508, WCAG 2.2, and relevant WAI-ARIA roles.
The Sankey Chart component’s accessibility compliance is outlined below.
| Accessibility Criteria | Compatibility |
|---|---|
| WCAG 2.2 Support |  |
| Section 508 Support | |
| Screen Reader Support | |
| Right-To-Left Support | |
| Color Contrast | |
| Mobile Device Support | |
| Keyboard Navigation Support | |
| Accessibility Checker Validation | |
| Axe-core Accessibility Validation | |
- All features of the component meet the requirement.
- Some features of the component do not meet the requirement.
- The component does not meet the requirement.WAI-ARIA attributes
The Sankey Chart component followed the WAI-ARIA patterns to meet the accessibility. The following ARIA attributes are used in the Sankey Chart component:
- img (role)
- button (role)
- region (role)
- aria-label (attribute)
- aria-hidden (attribute)
- aria-pressed (attribute)
Keyboard interaction
The Sankey Chart component follows the keyboard interaction guidelines, making it easier for assistive technology users and keyboard-only users to navigate the chart. The following keyboard shortcuts are supported by the Sankey Chart component.
| Press | To do this |
|---|---|
| Alt + J | Moves the focus to the Sankey Chart element. |
| Tab | Moves the focus to the next element in the chart. |
| Shift + Tab | Moves the focus to the previous element in the chart. |
| Down Arrow | Moves the focus to the node or link below from the selected element. |
| Up Arrow | Moves the focus to the node or link above from the selected element. |
| Left Arrow | Moves the focus to the next node or link from the selected element. |
| Right Arrow | Moves the focus to the previous node or link from the selected element. |
| ESC | Cancel the tooltip for the node or link. |
| Ctrl + P | Prints the Sankey Chart. |
Ensuring accessibility
The Sankey Chart component’s accessibility levels are ensured through an accessibility-checker and axe-core software tools during automated testing.
The accessibility compliance of the Sankey Chart component is shown in the following sample. Open the sample in a new window to evaluate the accessibility of the Sankey Chart component with accessibility tools.