SetterBox

One button, pressed when the variable holds its entry; a SetterBar is a row of them.

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SetterBox(binding, domain, shown, options)One button, pressed when the variable holds its entry; a SetterBar is a row of them.

Typed signatures

Type	Package	Applies
`(expression, expression, boxes, expression*) -> boxes`	`boxes`	always

Domain: Boxes

Details

Wolfram's SetterBar is a GridBox row of these, one per entry. The domain is the one value, as [a], and the third argument is the box the button shows, as SetterBox[Dynamic[c], {a}, label] in Wolfram. A Setter over a whole list is one value there, {{a, b, c}}; here the list is the entries of a bar.
A TogglerBar is the same row over Dynamic(MemberQ(x, a)): pressing a button puts its entry in the list x or takes it out.
A reader of the controls (the keyboard driver, reduce, the terminal drawer) groups a row that shares a binding back into the one SetterBar or TogglerBar, so each variable has one control.
Its intent is a choice.

Examples

Basic #

a box is inert: it evaluates to itself

\mathrm{SetterBox}(\mathrm{Dynamic}(c), \bigl\lbrack a\bigr\rbrack, \text{a})

Out

\mathrm{SetterBox}(\mathrm{Dynamic}(c), \bigl\lbrack a\bigr\rbrack, \text{a})

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