Learned Mediator Pattern

Author: Sebastian Boldt

Behavioral.playground/Pages/Mediator.xcplaygroundpage/Contents.swift

@@ -0,0 +1,52 @@
+//: [Previous](@previous)
+
+import Foundation
+
+protocol Sender {
+    func send(message: String)
+}
+
+protocol Receiver {
+    func receive(message: String)
+}
+
+struct Subscriber : Receiver {
+    var name : String
+    func receive(message: String) {
+        print("\(self.name) received message: \(message)")
+    }
+
+}
+
+class Broadcaster : Sender {
+    
+    private var receivers: [Receiver] = []
+    
+    public func addReceiver(receiver: Receiver) {
+        receivers.append(receiver)
+    }
+    
+    public func send(message: String) {
+        for rec in receivers {
+            rec.receive(message:message)
+        }
+    }
+}
+
+func broadCast(message:String, broadCaster: Broadcaster) {
+    broadCaster.send(message: message)
+}
+
+let broadCaster = Broadcaster()
+
+broadCaster.addReceiver(receiver: Subscriber(name: "Peter"))
+broadCaster.addReceiver(receiver:Subscriber(name: "Hans"))
+broadCaster.addReceiver(receiver:Subscriber(name: "Sabine"))
+
+
+broadCast(message: "Secret Message", broadCaster: broadCaster)
+
+
+
+
+//: [Next](@next)

Behavioral.playground/contents.xcplayground

@@ -5,5 +5,6 @@
         <page name='Command'/>
         <page name='Iterator'/>
         <page name='Strategy'/>
+        <page name='Mediator'/>
     </pages>
 </playground>

GOFSwift.xcworkspace/xcuserdata/sebastianboldt.xcuserdatad/UserInterfaceState.xcuserstate

@@ -13,8 +13,8 @@ Inspired by: https://github.com/ochococo/Design-Patterns-In-Swift
 * ✅ Command
 * ✅ Iterator
 * ✅ Strategy
+* ✅ Mediator
 * ❌ Interpreter
-* ❌ Mediator
 * ❌ Memento
 * ❌ Observer
 * ❌ State