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| enum ControlFactoryError: ErrorType { | |
| case TypeNotFound | |
| } | |
| protocol ControlFactory { | |
| func create<T>(t: T.Type) throws -> UIView | |
| } | |
| class RealControlFactory: ControlFactory { | |
| typealias FactoryItem = ()->(UIView) | |
| var options = [String: FactoryItem]() | |
| func create<T>(t: T.Type) throws -> UIView { | |
| guard let factory = options["\(t)"] else { | |
| throw ControlFactoryError.TypeNotFound | |
| } | |
| return factory() | |
| } | |
| func option<T>(t: T.Type, factory: ()->(UIView)) -> Self { | |
| options["\(t)"] = factory | |
| return self | |
| } | |
| } | |
| // Example | |
| let rf = RealControlFactory() | |
| .option(Int.self, factory: { return UIView() }) | |
| .option(String.self, factory: { return UIView() }) | |
| let f: ControlFactory = rf |
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