Add state pattern example

.gitignore

@@ -245,3 +245,4 @@ ModelManifest.xml
 .fake/
 /patterns-library
 /patterns-library.zip
+/DeviceWithStateDesign/DeviceWithStateDesign

BehavioralPatterns.sln

@@ -24,6 +24,8 @@ Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "ObserverPattern", "src\Obse
 EndProject
 Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "BehavioralPatterns", "src\BehavioralPatterns\BehavioralPatterns.xproj", "{7843B0F8-7530-4859-8BEE-43D370E0F0AA}"
 EndProject
+Project("{8BB2217D-0F2D-49D1-97BC-3654ED321F3B}") = "StatePattern", "src\StatePattern\StatePattern.xproj", "{0B5B470D-45A4-4F6B-8DAD-D0116C40B6FB}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -58,6 +60,10 @@ Global
 		{7843B0F8-7530-4859-8BEE-43D370E0F0AA}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{7843B0F8-7530-4859-8BEE-43D370E0F0AA}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{7843B0F8-7530-4859-8BEE-43D370E0F0AA}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0B5B470D-45A4-4F6B-8DAD-D0116C40B6FB}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0B5B470D-45A4-4F6B-8DAD-D0116C40B6FB}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0B5B470D-45A4-4F6B-8DAD-D0116C40B6FB}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0B5B470D-45A4-4F6B-8DAD-D0116C40B6FB}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -70,5 +76,6 @@ Global
 		{1DE3FDD3-D025-49D8-BEF4-D5F0688F89E8} = {3820200F-354C-41E6-8F34-B301F5D621C2}
 		{D48DB558-0228-4ACE-88A8-A202E5C57849} = {3820200F-354C-41E6-8F34-B301F5D621C2}
 		{7843B0F8-7530-4859-8BEE-43D370E0F0AA} = {3820200F-354C-41E6-8F34-B301F5D621C2}
+		{0B5B470D-45A4-4F6B-8DAD-D0116C40B6FB} = {3820200F-354C-41E6-8F34-B301F5D621C2}
 	EndGlobalSection
 EndGlobal

src/BehavioralPatterns/Program.cs

@@ -4,6 +4,7 @@ using IteratorPattern;
 using MediatorPattern;
 using MememntoPattern;
 using ObserverPattern;
+using StatePattern;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -15,34 +16,41 @@ namespace BehavioralPatterns
     {
         public static void Main(string[] args)
         {
-            ObserverPatternExamples.Run();
+            StatePatternExamples.Run();
-            Console.ReadKey();
+            GoToNextStep();
             //Chain of responsibillity
             //This is usefull when you have a request and you don't know who should process it
             ChainOfResponsibillityExamples.Run();
-            Console.ReadKey();
+            GoToNextStep();
-            Console.Clear();
 
             CommandPatternExamples.Run();
-            Console.ReadKey();
+            GoToNextStep();
-            Console.Clear();
 
             IteratorPatternExamples.Run();
-            Console.ReadKey();
+            GoToNextStep();
 
             IteratorPatternExamples.Run();
 
-            Console.ReadKey();
+            GoToNextStep();
 
             MediatorPatternExamples.Run();
 
-            Console.ReadKey();
+            GoToNextStep();
 
             MementoPatternExamples.Run();
 
+            GoToNextStep();
+
+            ObserverPatternExamples.Run();
+            GoToNextStep();
+
+
+        }
+
+        private static void GoToNextStep()
+        {
             Console.ReadKey();
-
+            Console.Clear();
-
         }
     }
 }

src/BehavioralPatterns/project.json

@@ -14,7 +14,8 @@
       "type": "platform",
       "version": "1.0.0"
     },
-    "ObserverPattern": "1.0.0-*"
+    "ObserverPattern": "1.0.0-*",
+    "StatePattern": "1.0.0-*"
   },
 
   "frameworks": {

src/StatePattern/Properties/AssemblyInfo.cs

@@ -0,0 +1,19 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("Hewlett-Packard Company")]
+[assembly: AssemblyProduct("StatePattern")]
+[assembly: AssemblyTrademark("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible
+// to COM components.  If you need to access a type in this assembly from
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+[assembly: Guid("0b5b470d-45a4-4f6b-8dad-d0116c40b6fb")]

src/StatePattern/StatePattern.xproj

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">14.0</VisualStudioVersion>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+  </PropertyGroup>
+
+  <Import Project="$(VSToolsPath)\DotNet\Microsoft.DotNet.Props" Condition="'$(VSToolsPath)' != ''" />
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>0b5b470d-45a4-4f6b-8dad-d0116c40b6fb</ProjectGuid>
+    <RootNamespace>StatePattern</RootNamespace>
+    <BaseIntermediateOutputPath Condition="'$(BaseIntermediateOutputPath)'=='' ">.\obj</BaseIntermediateOutputPath>
+    <OutputPath Condition="'$(OutputPath)'=='' ">.\bin\</OutputPath>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
+  </PropertyGroup>
+
+  <PropertyGroup>
+    <SchemaVersion>2.0</SchemaVersion>
+  </PropertyGroup>
+  <Import Project="$(VSToolsPath)\DotNet\Microsoft.DotNet.targets" Condition="'$(VSToolsPath)' != ''" />
+</Project>

src/StatePattern/StatePatternExamples.cs

@@ -0,0 +1,16 @@
+using StatePattern.TVExample;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace StatePattern
+{
+    public class StatePatternExamples
+    {
+        public static void Run()
+        {
+            TVExampleRunner.Run();
+        }
+    }
+}

src/StatePattern/TVExample/ITVState.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StatePattern
+{
+    public interface ITVState
+    {
+        void OnPowerButtonPresed();
+    }
+}

src/StatePattern/TVExample/TVContext.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StatePattern.TVExample
+{
+    public class TVContext : ITVState
+    {
+        ITVState initialState;
+        public TVContext(ITVState initialState)
+        {
+            State = initialState;
+        }
+        public ITVState State { get; set; }
+        public void OnPowerButtonPresed()
+        {
+            State.OnPowerButtonPresed();
+        }
+    }
+}

src/StatePattern/TVExample/TVExample.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StatePattern.TVExample
+{
+    public class TVExampleRunner
+    {
+        public static void Run()
+        {
+            ITVState tvOnState = new TVOnState();
+            ITVState tvOffState = new TVOffState();
+
+            TVContext context = new TVContext(tvOffState);
+
+            context.OnPowerButtonPresed();
+
+            context.State = tvOnState;
+
+            context.OnPowerButtonPresed();
+        }
+    }
+}

src/StatePattern/TVExample/TVOffState.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StatePattern.TVExample
+{
+    public class TVOffState : ITVState
+    {
+        public void OnPowerButtonPresed()
+        {
+            Console.WriteLine("Turning TV on");
+        }
+    }
+}

src/StatePattern/TVExample/TVOnState.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StatePattern.TVExample
+{
+    public class TVOnState : ITVState
+    {
+        public void OnPowerButtonPresed()
+        {
+            Console.WriteLine("TV turning off");
+        }
+    }
+}

src/StatePattern/project.json

@@ -0,0 +1,13 @@
+{
+  "version": "1.0.0-*",
+
+  "dependencies": {
+    "NETStandard.Library": "1.6.0"
+  },
+
+  "frameworks": {
+    "netstandard1.6": {
+      "imports": "dnxcore50"
+    }
+  }
+}