Give a terse control an accessible name and a hover/focus tooltip

Icon-only or single-word controls (the dark-mode toggle, plot/table download buttons, help-modal triggers) carry little visible text, so they are hard to identify by mouse, keyboard or screen reader. This sets an aria-label for assistive technology and wraps the control in a short bslib::tooltip() that surfaces on both hover and keyboard focus.

Usage

a11yControl(tag, label, tooltip = label, placement = "top")

Arguments

tag: A single UI element to annotate
label: Accessible name, applied as the tag's aria-label
tooltip: Tooltip text shown on hover/focus; defaults to label
placement: Tooltip placement, passed to tooltip

Value

tag wrapped in a bslib::tooltip()