FocusableToolbarDefinition

Options of a focusable toolbar view:

• isContextual: Marks the higher priority toolbar. For example when there are 2 visible toolbars, it allows to distinguish which toolbar should be focused first after the alt+f10 keystroke
• beforeFocus: A callback executed before the ToolbarView gains focus upon the Alt+F10 keystroke.
• afterBlur: A callback executed after ToolbarView loses focus upon Esc keystroke but before the focus goes back to the origin.

An instance of a focusable toolbar view.