Private ReadonlywrapperPrivate ReadonlyinputPrivate ReadonlychangeThe current state.
Show/hide the whole control group.
Mark the toggle INERT — flipping it changes nothing in the current state of its
siblings (refracting data needs a transmitting surface). Disabled, dimmed, with
the reason as hover text; null restores the live state. Same contract as
LabeledSlider.setInert.
The hover text of the whole group (the inert reason, or empty).
Remove from DOM and detach listeners.
Programmatically set the state. Does not fire onChange.