Accessibility in Angular Tab component
22 Sep 20256 minutes to read
The Tab component follows 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 Tab component 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.ARIA attributes
The Tab component is designed by considering WAI-ARIA standard. The Tab is supported with ARIA Accessibility which is accessible by screen readers and other assistive technology devices. The following list of attributes are added in the Tab component.
| Roles and Attributes | Functionalities |
|---|---|
| tablist | This attribute is set to the Tab header element that describes the actual role of the element. |
| tab | This attribute is set to the Tab items element to indicate an interactive element inside a tablist that, when activated, displays its associated tabpanel. |
| tabpanel | This attribute is set to the Tab content that describes the role for viewing the active content. |
| aria-orientation | This attribute is set to the Tab header element to indicate the Tab header orientation. The default value of this attribute is horizontal. |
| aria-selected | This attribute is set to the Tab items to indicate the selection state for Tab items. The active Tab is set to true for this attribute. |
| aria-labelledby | This attribute is set to the Tab content element to indicate the associated Tab header for the content. |
| aria-controls | This attribute is set to the Tab items element to indicate the associated tabpanel for the header. |
| aria-haspopup | This attribute is set to the Popup element to indicate the popup mode in the Tab. The default value of this attribute is false. If popup mode is enabled, the attribute value is set to true. |
| aria-disabled | This attribute is set to the Tab items to indicate the disabled state of the Tab. |
Keyboard interaction
By default, keyboard navigation is enabled. This component implements keyboard navigation support by following the WAI-ARIA practices. Once focused on the active Tab element, you can use the following key combinations for interacting with the Tab component.
| Key | Description |
|---|---|
| Left | Moves focus to the previous Tab. If focus is on the first Tab, the focus will not move to any Tab. |
| Right | Moves focus to the next Tab. If focus is on the last Tab element, the focus will not move to any Tab. |
| Enter or Space | Selects the Tab if it is not selected. Opens the popup dropdown icon if it is focused. Selects the Tab item as active when popup item is focused. |
| Esc(Escape) | Closes the popup if popup is in opened state. |
| Down or Up | When the popup is open and focused, it will move to previous/next Tab items of the popup in the vertical direction. |
| Home | Moves focus to the first Tab. |
| End | Moves focus to the last Tab. |
| Shift + F10 | If popup mode is enabled, it opens the popup when the Tab is focused. |
| Delete | Deletes the Tab, if close button is enabled in Tab header. |
| Tab | Moves focus through the interactive elements. |
| Shift + Tab | Moves focus through the interactive elements. |
Ensuring accessibility
The Tab component’s accessibility levels are ensured through an accessibility-checker and axe-core software tools during automated testing.
The accessibility compliance of the Tab component is shown in the following sample. Open the sample in a new window to evaluate the accessibility of the Tab component with accessibility tools.