ReactiveX#1 Helper methods for UIApplication and UIViewController

lsn21 · Mar 15, 2019 · 824ced7 · 824ced7
1 parent 0bbfe59
commit 824ced7
Showing 1 changed file with 41 additions and 0 deletions.
diff --git a/RxCocoa/iOS/UIApplication+Rx.swift b/RxCocoa/iOS/UIApplication+Rx.swift
@@ -52,5 +52,46 @@
             return ControlEvent(events: source)
         }
     }
+
+
+    extension UIApplication: HasDelegate {
+        public typealias Delegate = UIApplicationDelegate
+    }
+
+    public class RxUIApplicationDelegateProxy: DelegateProxy<UIApplication, UIApplicationDelegate>, DelegateProxyType, UIApplicationDelegate {
+
+        public init(application: UIApplication) {
+            super.init(parentObject: application, delegateProxy: RxUIApplicationDelegateProxy.self)
+        }
+
+        public static func registerKnownImplementations() {
+            self.register { RxUIApplicationDelegateProxy(application: $0) }
+        }
+    }
+
+    extension Reactive where Base: UIApplication {
+        public var delegate: RxUIApplicationDelegateProxy {
+            return RxUIApplicationDelegateProxy.proxy(for: base)
+        }
+
+        public var didRegisterNotificationSettings: Observable<UIUserNotificationSettings> {
+            return delegate.methodInvoked(#selector(UIApplicationDelegate.application(_:didRegister:))).map { a in
+                return try castOrThrow(UIUserNotificationSettings.self, a[1])
+            }
+        }
+    }
+
+    private func castOptionalOrThrow<T>(_ resultType: T.Type, _ object: Any) throws -> T? {
+        if NSNull().isEqual(object) {
+            return nil
+        }
+
+        guard let returnValue = object as? T else {
+            throw RxCocoaError.castingError(object: object, targetType: resultType)
+        }
+
+        return returnValue
+    }
+
 #endif