Strategy

Author: JosephCalla

Design-Patterns-Swift.playground/Pages/Strategy.xcplaygroundpage/Contents.swift

@@ -0,0 +1,48 @@
+//: [Previous](@previous)
+
+import Foundation
+
+protocol StrategyTextFormatter {
+    func format(text: String)
+}
+
+class CapitalStategyTextFormatter: StrategyTextFormatter {
+    func format(text: String) {
+        print("Texto en Mayusculas: \(text.uppercased())")
+    }
+}
+
+class LowerStategyTextFormatter: StrategyTextFormatter {
+    func format(text: String) {
+        print("Texto en Minusculas: \(text.lowercased())")
+    }
+}
+
+class Context {
+    var strategyTextFormatter: StrategyTextFormatter
+    
+    init(strategyTextFormatter: StrategyTextFormatter) {
+        self.strategyTextFormatter = strategyTextFormatter
+    }
+    
+    func publishText(text: String) {
+        strategyTextFormatter.format(text: text)
+    }
+}
+
+// TEST
+func testStrategy() {
+    let contextCapital = Context(strategyTextFormatter: CapitalStategyTextFormatter())
+    contextCapital.publishText(text: "este texto sera convertido a Mayusculas a traves de nuestro algoritmo")
+    
+    let contextLower = Context(strategyTextFormatter: LowerStategyTextFormatter())
+    contextLower.publishText(text: "este texto sera convertido a Minusculas a traves de nuestro algoritmo")
+}
+
+testStrategy()
+
+// RESULT
+///Texto en Mayusculas: ESTE TEXTO SERA CONVERTIDO A MAYUSCULAS A TRAVES DE NUESTRO ALGORITMO
+///Texto en Minusculas: este texto sera convertido a minusculas a traves de nuestro algoritmo
+
+//: [Next](@next)

Design-Patterns-Swift.playground/contents.xcplayground

@@ -9,5 +9,6 @@
         <page name='Facade'/>
         <page name='Proxy'/>
         <page name='Visitor'/>
+        <page name='Strategy'/>
     </pages>
 </playground>