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add Momento pattern
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5 files changed

+168
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lines changed

‎Behavioral/Memento/CareTaker.cs

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using System;
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using System.Collections.Generic;
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namespace Memento {
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class CareTaker {
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static void Main(string[] args) {
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IList<Originator.Momento> savedStates = new List<Originator.Momento>();
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var originator = new Originator();
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originator.SetState("State1");
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originator.SetState("State2");
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savedStates.Add(originator.SaveToMomento());
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originator.SetState("State3");
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savedStates.Add(originator.SaveToMomento());
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originator.SetState("State4");
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originator.RestoreFromMomento(savedStates[0]);
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Console.ReadKey();
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}
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}
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}

‎Behavioral/Memento/Memento.csproj

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">x86</Platform>
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<ProductVersion>8.0.30703</ProductVersion>
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<SchemaVersion>2.0</SchemaVersion>
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<ProjectGuid>{C404876C-B04B-451F-B159-2C0CF8CB861B}</ProjectGuid>
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<OutputType>Exe</OutputType>
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<AppDesignerFolder>Properties</AppDesignerFolder>
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<RootNamespace>Memento</RootNamespace>
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<AssemblyName>Memento</AssemblyName>
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<TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
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<TargetFrameworkProfile>Client</TargetFrameworkProfile>
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<FileAlignment>512</FileAlignment>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|x86' ">
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<PlatformTarget>x86</PlatformTarget>
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug\</OutputPath>
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<DefineConstants>DEBUG;TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|x86' ">
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<PlatformTarget>x86</PlatformTarget>
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DefineConstants>TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup>
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<StartupObject>Memento.CareTaker</StartupObject>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="System" />
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<Reference Include="System.Core" />
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<Reference Include="System.Xml.Linq" />
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<Reference Include="System.Data.DataSetExtensions" />
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<Reference Include="Microsoft.CSharp" />
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<Reference Include="System.Data" />
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<Reference Include="System.Xml" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="CareTaker.cs" />
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<Compile Include="Originator.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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<!-- To modify your build process, add your task inside one of the targets below and uncomment it.
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Other similar extension points exist, see Microsoft.Common.targets.
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<Target Name="BeforeBuild">
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</Target>
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<Target Name="AfterBuild">
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</Target>
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-->
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</Project>

‎Behavioral/Memento/Originator.cs

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using System;
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namespace Memento {
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public class Originator {
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private string _state;
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public void SetState(string state) {
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Console.WriteLine("Originator: setting momento to {0}", state);
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this._state = state;
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}
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public Momento SaveToMomento() {
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Console.WriteLine("Originator: saving to momento...");
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return new Originator.Momento(this._state);
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}
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public void RestoreFromMomento(Momento momento) {
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this._state = momento.State;
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Console.WriteLine("Originator: resotring from momento {0}", this._state);
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}
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public class Momento {
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private readonly string _state;
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internal Momento(string state) {
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this._state = state;
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}
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public string State {
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get {
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return this._state;
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}
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}
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}
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}
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}

‎Behavioral/Memento/Properties/AssemblyInfo.cs

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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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// General Information about an assembly is controlled through the following
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// set of attributes. Change these attribute values to modify the information
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// associated with an assembly.
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[assembly: AssemblyTitle("Memento")]
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[assembly: AssemblyDescription("")]
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[assembly: AssemblyConfiguration("")]
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[assembly: AssemblyCompany("")]
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[assembly: AssemblyProduct("Memento")]
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[assembly: AssemblyCopyright("Copyright © 2012")]
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[assembly: AssemblyTrademark("")]
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[assembly: AssemblyCulture("")]
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// Setting ComVisible to false makes the types in this assembly not visible
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// to COM components. If you need to access a type in this assembly from
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// COM, set the ComVisible attribute to true on that type.
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[assembly: ComVisible(false)]
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// The following GUID is for the ID of the typelib if this project is exposed to COM
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[assembly: Guid("02b2940c-887c-4401-9b58-88a108d729b8")]
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// Version information for an assembly consists of the following four values:
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//
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// Major Version
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// Minor Version
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// Build Number
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// Revision
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//
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// You can specify all the values or you can default the Build and Revision Numbers
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// by using the '*' as shown below:
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// [assembly: AssemblyVersion("1.0.*")]
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[assembly: AssemblyVersion("1.0.0.0")]
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[assembly: AssemblyFileVersion("1.0.0.0")]

‎DesignPatterns.sln

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@@ -13,6 +13,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Iterator", "Behavioral\Iter
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Mediator", "Behavioral\Mediator\Mediator.csproj", "{9D3B3EAE-1446-4896-8800-C8EA82C3BFD6}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Memento", "Behavioral\Memento\Memento.csproj", "{C404876C-B04B-451F-B159-2C0CF8CB861B}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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{9D3B3EAE-1446-4896-8800-C8EA82C3BFD6}.Release|Any CPU.ActiveCfg = Release|x86
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{9D3B3EAE-1446-4896-8800-C8EA82C3BFD6}.Release|x86.ActiveCfg = Release|x86
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{9D3B3EAE-1446-4896-8800-C8EA82C3BFD6}.Release|x86.Build.0 = Release|x86
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{C404876C-B04B-451F-B159-2C0CF8CB861B}.Debug|Any CPU.ActiveCfg = Debug|x86
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{C404876C-B04B-451F-B159-2C0CF8CB861B}.Debug|x86.ActiveCfg = Debug|x86
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{C404876C-B04B-451F-B159-2C0CF8CB861B}.Debug|x86.Build.0 = Debug|x86
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{C404876C-B04B-451F-B159-2C0CF8CB861B}.Release|Any CPU.ActiveCfg = Release|x86
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{C404876C-B04B-451F-B159-2C0CF8CB861B}.Release|x86.ActiveCfg = Release|x86
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{C404876C-B04B-451F-B159-2C0CF8CB861B}.Release|x86.Build.0 = Release|x86
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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{6007D4E1-1676-4FBC-816D-1B19F6829F22} = {B3C3F0E2-50B6-450B-A161-F4500F4E681D}
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{2A37AC43-5F17-4774-B9BE-8D5008F41F43} = {B3C3F0E2-50B6-450B-A161-F4500F4E681D}
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{9D3B3EAE-1446-4896-8800-C8EA82C3BFD6} = {B3C3F0E2-50B6-450B-A161-F4500F4E681D}
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{C404876C-B04B-451F-B159-2C0CF8CB861B} = {B3C3F0E2-50B6-450B-A161-F4500F4E681D}
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EndGlobalSection
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EndGlobal

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