mediator pattern example

Author: anupavanm

DesignPatterns.sln

@@ -33,6 +33,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CommandPattern", "CommandPa
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "IteratorPattern", "IteratorPattern\IteratorPattern.csproj", "{BB1AE146-315A-44F8-A90B-77E386C65678}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MediatorPattern", "MediatorPattern\MediatorPattern.csproj", "{A6278444-3DDF-4175-996C-361E536668FC}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -99,6 +101,10 @@ Global
 		{BB1AE146-315A-44F8-A90B-77E386C65678}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{BB1AE146-315A-44F8-A90B-77E386C65678}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{BB1AE146-315A-44F8-A90B-77E386C65678}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A6278444-3DDF-4175-996C-361E536668FC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A6278444-3DDF-4175-996C-361E536668FC}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A6278444-3DDF-4175-996C-361E536668FC}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A6278444-3DDF-4175-996C-361E536668FC}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

MediatorPattern/MediatorPattern.csproj

@@ -0,0 +1,8 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>

MediatorPattern/Program.cs

@@ -0,0 +1,60 @@
+using System;
+
+namespace MediatorPattern
+{
+interface IChatRoomMediator
+{
+  void ShowMessage(User user, string message);
+}
+
+//Mediator
+class ChatRoom : IChatRoomMediator
+{
+  public void ShowMessage(User user, string message)
+  {
+    Console.WriteLine("{0} [{1}]:{2}", DateTime.Now.ToString("MMMM dd, H:mm"), user.GetName(), message);
+  }
+}
+
+class User
+{
+  private string mName;
+  private IChatRoomMediator mChatRoom;
+
+  public User(string name, IChatRoomMediator chatroom)
+  {
+    mChatRoom = chatroom;
+    mName = name;
+  }
+
+  public string GetName()
+  {
+    return mName;
+  }
+
+  public void Send(string message)
+  {
+    mChatRoom.ShowMessage(this, message);
+  }
+}
+
+
+  class Program
+  {
+    static void Main(string[] args)
+    {
+      var mediator = new ChatRoom();
+
+      var john = new User("John", mediator);
+      var jane = new User("Jane", mediator);
+
+      john.Send("Hi there!");
+      jane.Send("Hey!");
+
+      //April 14, 20:05[John]:Hi there!
+      //April 14, 20:05[Jane]:Hey!
+
+      Console.ReadLine();
+    }
+  }
+}