I have an objc base class:
@protocol BaseClassDelegate;
@interface BaseClass : NSObject
@property (nonatomic, weak) id <BaseClassDelegate> delegate;
@end
@protocol BaseClassDelegate <NSObject>
-(void)baseDelegateMethod;
@end
I am creating a swift sub-class in which I want to extend my delegate...
protocol SubClassDelegate : BaseClassDelegate {
func additionalSubClassDelegateMethod();
}
class SubClass: BaseClass {
@IBAction func onDoSomething(sender: AnyObject) {
delegate?.additionalSubClassDelegateMethod(); <--- No such method in 'delegate'
}
}
Now, when I create my sub-class, I can say it conforms to the SubClassDelegate and set the delegate. The problem is (of course), is that 'delegate' doesn't exist in this sub-class. Is there a way to tell the compiler to 'extend' my delegate into my sub-class? (or am I being insane here and missed something obvious)
I'd either create a wrapper delegate to make it the correct type in
SubClass
.Or simply cast the delegate to the expected type: