Module toggle 

Controls that report a choice: checkbox, radio, and switch.

All three read their state from the caller and report an intent. They never hold the answer themselves, so a host that refuses a change simply does not apply it, and the control keeps showing what is actually true.

Structs

Checkbox

A box that reports one of on, off, or partly on.

Radio

One option in a set where exactly one can hold.

Switch

A control that takes effect the moment it is flipped.