TsaiCheckbox

A controlled checkbox with optional label, description, error state, label position, and tristate behavior.

Open live example

TsaiCheckbox(
  value: accepted,
  label: 'Accept terms',
  description: 'Required to continue',
  onChanged: (value) => setState(() => accepted = value!),
)

Set onChanged to null to disable interaction. With tristate: true, values cycle through false, true, and null. isError styles the unchecked state.