Swift Activity View Mixin

AcitivityMixin.swift

//use whatever activity view makes you happy in this project we were converting from ObjC to Swift, #2016

protocol ActivityVC: class {
    var activityView: DejalBezelActivityView? { get set }
    var view: UIView! { get }
}
extension ActivityVC {
    mutating func activityStart() {
        if activityView  == nil {
            activityView = DejalBezelActivityView(forView: view, withLabel: nil, width: 40)
        }
        activityView!.animateShow()
    }

    func activityStop() {
        activityView?.animateRemove()
    }
}