Accessibility in Blazor Toolbar Component

23 Jan 20232 minutes to read

The Blazor Toolbar component has been designed, keeping in mind the WAI-ARIA specifications, and applying the WAI-ARIA roles, states and properties along with keyboard support for people who use assistive devices. WAI-ARIA accessibility support is achieved through attributes like aria-label and aria-orientation, It provides information about elements in a document for assistive technology. The component implements keyboard navigation support by following the WAI-ARIA practices, and has been tested in major screen readers.

ARIA attributes

The Toolbar element is assigned the role of toolbar.

Property Functionalities
role=”toolbar” Attribute is set to the ToolBar element describes the actual role of the element.
aria-orientation Attribute is set to the ToolBar element to indicates the ToolBar orientation. Default value is horizontal.
aria-label Attribute is set to ToolBar element describes the purpose of the set of toolbar.
aria-expanded Attribute is set to the ToolBar Popup element to indicates the expanded state of the popup.
aria-haspopup Attribute is set to the popup element to indicates the popup mode of the Toolbar. Default value is false. When popup mode is enabled, attribute value has to be changed to true.
aria-disabled Attribute set to the ToolBar element to indicates the disabled state of the ToolBar.

Keyboard interaction

Keyboard navigation is enabled, by default. Possible keys are:

Key Description
Left Focuses the previous element.
Right Focuses the next element.
Enter When focused on a ToolBar command, clicking the key triggers the click of Toolbar element. When popup drop-down icon is focused, the popup opens.
Esc(Escape) Closes popup.
Down Focuses the next popup element.
Up Focuses the previous popup element.