Selector<T>.active constructor

const Selector<T>.active({
  1. T? normal,
  2. T? active,
})

normal 设置normal 和 disabled active 设置active 和 inactive 效果同Selected.disabled, 参数名不同, 重在表达正常状态

Implementation

const Selector.active({T? normal, T? active})
    : normal = normal,
      active = active,
      disabled = normal,
      inactive = active;