All viewer components support ARIA (Accessible Rich Internet Applications) roles and attributes to improve integration with assistive technologies such as screen readers.
The top-level viewer element has role
aria-label attribute set by default to the name of the viewer. You can control the label with the
Container.LABEL localization symbol.
Buttons have the role
button and descriptive text set with
aria-label attribute. The value of
aria-label attribute is populated from the value of the button’s localization symbol. When a button is disabled,
aria-disabled attribute is set accordingly.
Slider components have the role
slider with attributes
aria-valuemax to describe the current slider position.
Drop-down lists are activated by buttons with additional
aria-haspopup attribute set to
aria-controls attribute referencing the actual drop-down panel element. The drop-down panel itself has the role
menu with subelements having the role
menuitem. Each menu item has the
aria-label attribute specified.
Modal dialog boxes have the role
dialog. The dialog box’s header element is referenced by the