Developer TabLine
What component has
Keyboard support
| Key | Function |
|---|---|
Tab | When focus moves into the tab list, the active tab element gets the focus. When the tab list contains the focus, Tab moves focus to the next element in the Tab sequence, which is the tabpanel element. |
Left Arrow , Right Arrow | Changes the state of next/previous tab element in the group to active. If focus is on the last/first tab, arrows move focus to the first/last tab respectively. |
Space/Enter | Activates focused tab element. Works only when TabLine has behavior='manual'. |
Roles & attributes
The following list describes roles and attributes that component already has.
| Component | Attribute | Usage |
|---|---|---|
TabLine | role="tablist" | Indicates that the element serves as a container for a set of tabs. |
TabLine.Item | role="tab" | Indicates the element serves as a tab control. When focused, is automatically activated, causing its associated tabpanel to be displayed. Provides a title for its associated tabpanel. |
TabLine.Item | aria-selected="true" | Indicates the tab control is activated and its associated panel is displayed. Set when a tab receives focus. |
TabLine.Item | aria-selected="false" | Indicates the tab control isn’t active and its associated panel isn’t displayed. |
TabLine.Item | tabindex="-1" | Removes the element from the page Tab sequence. Set when a tab isn’t selected so that only the selected tab is in the page Tab sequence. Since an HTML button element is used for the tab, it isn’t necessary to set tabindex=0 on the selected (active) tab element. This approach to managing focus is described in the section on roving tabindex. |
Considerations for designers & developers
Roles & attributes
The list below will help you to keep in mind the necessary roles and attributes you need to set to tabpanel with your content to make TabLine and content it operates fully accessible. Check our code examples.
| Component / element | Attribute | Usage |
|---|---|---|
TabLine | aria-label or aria-labelledby="IDREF" | Adds an accessible name for a set of tabs. |
TabLine.Item | aria-controls="IDREF" | Refers to the tabpanel element associated with the tab. |
div | role="tabpanel" | Indicates the element serves as a container for tab panel content. Is hidden unless its associated tab control is activated. |
div | aria-labelledby="IDREF" | Refers to the tab element that controls the panel. Provides an accessible name for the tab panel. |
div | tabIndex="0" | Puts the tabpanel in the page Tab sequence. Facilitates movement to panel content for assistive technology users. Especially helpful if any panels in a set contain content where the first element in the panel is not focusable. |
Resources
- W3 tabs example has detailed information about the tabs accessible behavior.
- A11y style guide describes the core recommendations for the tabs.
Other recommendations
See more accessibility recommendations in the common Accessibility guide.