add Memento Pattern

19.MementoPattern/2.Code/MementoPattern/MementoPattern.sln

@@ -0,0 +1,22 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2013
+VisualStudioVersion = 12.0.21005.1
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "MementoPattern", "MementoPattern\MementoPattern.vcxproj", "{F79EC45A-55BA-4A7A-8EBF-22B1F644E689}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Win32 = Debug|Win32
+		Release|Win32 = Release|Win32
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{F79EC45A-55BA-4A7A-8EBF-22B1F644E689}.Debug|Win32.ActiveCfg = Debug|Win32
+		{F79EC45A-55BA-4A7A-8EBF-22B1F644E689}.Debug|Win32.Build.0 = Debug|Win32
+		{F79EC45A-55BA-4A7A-8EBF-22B1F644E689}.Release|Win32.ActiveCfg = Release|Win32
+		{F79EC45A-55BA-4A7A-8EBF-22B1F644E689}.Release|Win32.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

19.MementoPattern/2.Code/MementoPattern/MementoPattern/CodeManager.h

@@ -0,0 +1,33 @@
+#ifndef __CODEMANAGER_H__
+#define __CODEMANAGER_H__
+
+#include "Memento.h"
+#include <vector>
+using namespace std;
+
+// 管理者
+class CodeManager
+{
+public:
+	CodeManager(){}
+	void commit(Memento* m){
+		printf("提交：版本-%d, 日期-%s, 标签-%s\n", m->getVersion(), m->getDate().c_str(), m->getLabel().c_str());
+		mementoList.push_back(m);
+	}
+	// 切换到指定的版本，即回退到指定版本
+	Memento* switchToPointedVersion(int index){
+		mementoList.erase(mementoList.begin() + mementoList.size() - index, mementoList.end());
+		return mementoList[mementoList.size() - 1];
+	}
+	// 打印历史版本
+	void codeLog(){
+		for (int i = 0; i < mementoList.size(); i++){
+			printf("[%d]：版本-%d, 日期-%s, 标签-%s\n", i, mementoList[i]->getVersion(),
+				mementoList[i]->getDate().c_str(), mementoList[i]->getLabel().c_str());
+		}
+	}
+private:
+	vector<Memento*> mementoList;
+};
+
+#endif

19.MementoPattern/2.Code/MementoPattern/MementoPattern/Debug/MementoPattern.log

@@ -0,0 +1,14 @@
+生成启动时间为 2019/11/5 22:43:13。
+     1>项目“G:\8.New_cd\3.Study\8.Design Pattern\19.MementoPattern\2.Code\MementoPattern\MementoPattern\MementoPattern.vcxproj”在节点 2 上(Build 个目标)。
+     1>ClCompile:
+         E:\Microsoft Visual Studio 12.0\VC\bin\CL.exe /c /ZI /nologo /W3 /WX- /sdl /Od /Oy- /D WIN32 /D _DEBUG /D _CONSOLE /D _LIB /D _UNICODE /D UNICODE /Gm /EHsc /RTC1 /MDd /GS /fp:precise /Zc:wchar_t /Zc:forScope /Fo"Debug\\" /Fd"Debug\vc120.pdb" /Gd /TP /analyze- /errorReport:prompt main.cpp
+         main.cpp
+     1>g:\8.new_cd\3.study\8.design pattern\19.mementopattern\2.code\mementopattern\mementopattern\codemanager.h(24): warning C4018: “<”: 有符号/无符号不匹配
+       Link:
+         E:\Microsoft Visual Studio 12.0\VC\bin\link.exe /ERRORREPORT:PROMPT /OUT:"G:\8.New_cd\3.Study\8.Design Pattern\19.MementoPattern\2.Code\MementoPattern\Debug\MementoPattern.exe" /INCREMENTAL /NOLOGO kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /MANIFEST /MANIFESTUAC:"level='asInvoker' uiAccess='false'" /manifest:embed /DEBUG /PDB:"G:\8.New_cd\3.Study\8.Design Pattern\19.MementoPattern\2.Code\MementoPattern\Debug\MementoPattern.pdb" /SUBSYSTEM:CONSOLE /TLBID:1 /DYNAMICBASE /NXCOMPAT /IMPLIB:"G:\8.New_cd\3.Study\8.Design Pattern\19.MementoPattern\2.Code\MementoPattern\Debug\MementoPattern.lib" /MACHINE:X86 Debug\main.obj
+         MementoPattern.vcxproj -> G:\8.New_cd\3.Study\8.Design Pattern\19.MementoPattern\2.Code\MementoPattern\Debug\MementoPattern.exe
+     1>已完成生成项目“G:\8.New_cd\3.Study\8.Design Pattern\19.MementoPattern\2.Code\MementoPattern\MementoPattern\MementoPattern.vcxproj”(Build 个目标)的操作。
+
+生成成功。
+
+已用时间 00:00:01.85

19.MementoPattern/2.Code/MementoPattern/MementoPattern/Debug/MementoPattern.tlog/MementoPattern.lastbuildstate

@@ -0,0 +1,2 @@
+#TargetFrameworkVersion=v4.0:PlatformToolSet=v120:EnableManagedIncrementalBuild=false:VCToolArchitecture=Native32Bit
+Debug|Win32|G:\8.New_cd\3.Study\8.Design Pattern\19.MementoPattern\2.Code\MementoPattern\|

19.MementoPattern/2.Code/MementoPattern/MementoPattern/Memento.h

@@ -0,0 +1,37 @@
+#ifndef __MEMENTO_H__
+#define __MEMENTO_H__
+
+class Memento
+{
+public:
+	Memento(){}
+	Memento(int iVersion, string iDate, string iLabel){
+		version = iVersion;
+		date = iDate;
+		label = iLabel;
+	}
+	void setVersion(int iVersion){
+		version = iVersion;
+	}
+	int getVersion(){
+		return version;
+	}
+	void setLabel(string iLabel){
+		label = iLabel;
+	}
+	string getLabel(){
+		return label;
+	}
+	void setDate(string iDate){
+		date = iDate;
+	}
+	string getDate(){
+		return date;
+	}
+private:
+	int version;
+	string date;
+	string label;
+};
+
+#endif

19.MementoPattern/2.Code/MementoPattern/MementoPattern/MementoPattern.vcxproj

@@ -0,0 +1,92 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{F79EC45A-55BA-4A7A-8EBF-22B1F644E689}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>MementoPattern</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <SDLCheck>true</SDLCheck>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClInclude Include="CodeManager.h" />
+    <ClInclude Include="demo.h" />
+    <ClInclude Include="Memento.h" />
+    <ClInclude Include="Originator.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>

19.MementoPattern/2.Code/MementoPattern/MementoPattern/MementoPattern.vcxproj.filters

@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="源文件">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="头文件">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="资源文件">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="demo.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+    <ClInclude Include="Originator.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+    <ClInclude Include="Memento.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+    <ClInclude Include="CodeManager.h">
+      <Filter>头文件</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="main.cpp">
+      <Filter>源文件</Filter>
+    </ClCompile>
+  </ItemGroup>
+</Project>

19.MementoPattern/2.Code/MementoPattern/MementoPattern/Originator.cpp

@@ -0,0 +1,49 @@
+#include "Originator.h"
+
+CodeVersion::CodeVersion(){
+	version = 0;
+	date    = "1900-01-01";
+	label   = "none";
+}
+
+CodeVersion::CodeVersion(int iVersion, string iDate, string iLabel)
+{
+	version = iVersion;
+	date    = iDate;
+	label   = iLabel;
+}
+
+Memento* CodeVersion::commit(){
+	return new Memento(this->version, this->date, this->label);
+}
+
+
+void CodeVersion::restore(Memento* memento){
+	setVersion(memento->getVersion());
+	setDate(memento->getDate());
+	setLabel(memento->getLabel());
+}
+
+void CodeVersion::setVersion(int iVersion){
+	version = iVersion;
+}
+
+int CodeVersion::getVersion(){
+	return version;
+}
+
+void CodeVersion::setLabel(string iLabel){
+	label = iLabel;
+}
+
+string CodeVersion::getLabel(){
+	return label;
+}
+
+void CodeVersion::setDate(string iDate){
+	date = iDate;
+}
+
+string CodeVersion::getDate(){
+	return date;
+}

19.MementoPattern/2.Code/MementoPattern/MementoPattern/Originator.h

@@ -0,0 +1,60 @@
+#ifndef __CODEVERSION_H__
+#define __CODEVERSION_H__
+
+#include <iostream>
+using namespace std;
+
+#include "Memento.h"
+
+// 原生器：CodeVersion
+class CodeVersion
+{
+public:
+	CodeVersion(){
+		version = 0;
+		date = "1900-01-01";
+		label = "none";
+	}
+	CodeVersion(int iVersion, string iDate, string iLabel){
+		version = iVersion;
+		date = iDate;
+		label = iLabel;
+	}
+	// 保存代码
+	Memento* save(){
+		return new Memento(this->version, this->date, this->label);
+	}
+	// 回退版本
+	void restore(Memento* memento){
+		setVersion(memento->getVersion());
+		setDate(memento->getDate());
+		setLabel(memento->getLabel());
+	}
+	void setVersion(int iVersion){
+		version = iVersion;
+	}
+	int getVersion(){
+		return version;
+	}
+	void setLabel(string iLabel){
+		label = iLabel;
+	}
+	string getLabel(){
+		return label;
+	}
+	void setDate(string iDate){
+		date = iDate;
+	}
+	string getDate(){
+		return date;
+	}
+private:
+	// 代码版本
+	int version;
+	// 代码提交日期
+	string date;
+	// 代码标签
+	string label;
+};
+
+#endif

19.MementoPattern/2.Code/MementoPattern/MementoPattern/demo.h

@@ -0,0 +1,90 @@
+#ifndef __DEMO_H__
+#define __DEMO_H__
+
+#ifndef __DEMO_H__
+// 前向声明
+class Memento;
+
+// 原发器  典型实现
+class Originator
+{
+public:
+	Originator(){
+		state = "";
+	}
+	Originator(String iState){
+		state = iState;
+	}
+	// 创建备忘录对象
+	Memento* createMemento(){
+		return new Memento(this);
+	}
+	// 利用备忘录对象恢复原发器状态
+	void restoreMemento(Memento* m){
+		state = m->getState();
+	}
+	void setState(string iState){ 
+		state = iState; 
+	}
+	string getState(){ 
+		return state; 
+	}
+private:
+	string state;
+};
+
+// 备忘录  典型实现（仿照原生器的设计）
+class Memento
+{
+public:
+	Memento(){
+		state = "";
+	}
+	Memento(Originator* o){
+		state = o->getState();
+	}
+	void setState(String iState){
+		state = iState;
+	}
+	string getState(){
+		return state;
+	}
+private:
+	String state;
+};
+
+// 负责人  典型实现
+class Caretaker
+{
+public:
+	Caretaker(){}
+	Memento* getMemento(){
+		return memento;
+	}
+	void setMemento(Memento *m){
+		memento = m;
+	}
+private:
+	Memento* memento;
+};
+
+// 客户端 示例代码
+int main()
+{
+	// 创建原发器对象
+	Originator o = new Originator("状态1");
+	// 创建负责人对象
+	Caretaker *c = new Caretaker();
+	c->setMemento(o->createMemento());
+
+	o->setState("状态2");
+
+	// 从负责人对象中取出备忘录对象，实现撤销
+	o->restoreMemento(c->getMemento());
+
+	return 0;
+}
+
+#endif 
+
+#endif // __DEMO_H__

19.MementoPattern/2.Code/MementoPattern/MementoPattern/main.cpp

@@ -0,0 +1,44 @@
+#include "Originator.h"
+#include "Memento.h"
+#include "CodeManager.h"
+
+int main()
+{
+	CodeManager *Jungle = new CodeManager();
+
+	CodeVersion* codeVer = new CodeVersion(1001, "2019-11-03", "Initial version");
+
+	// 提交初始版本
+	printf("提交初始版本:\n");
+	Jungle->commit(codeVer->save());
+
+	// 修改一个版本，增加了日志功能
+	printf("\n提交一个版本，增加了日志功能:\n");
+	codeVer->setVersion(1002);
+	codeVer->setDate("2019-11-04");
+	codeVer->setLabel("Add log funciton");
+	Jungle->commit(codeVer->save());
+
+	// 修改一个版本，增加了Qt图片浏览器
+	printf("\n提交一个版本，增加了Qt图片浏览器:\n");
+	codeVer->setVersion(1003);
+	codeVer->setDate("2019-11-05");
+	codeVer->setLabel("Add Qt Image Browser");
+	Jungle->commit(codeVer->save());
+
+	// 查看提交历史
+	printf("\n查看提交历史\n");
+	Jungle->codeLog();
+
+	// 回退到上一个版本
+	printf("\n回退到上一个版本\n");
+	codeVer->restore(Jungle->switchToPointedVersion(1));
+
+	// 查看提交历史
+	printf("\n查看提交历史\n");
+	Jungle->codeLog();
+
+	printf("\n\n");
+	system("pause");
+	return 0;
+}

README.md

@@ -86,3 +86,7 @@ Jungle设计模式系列
 21.设计模式（二十一）——中介者模式
 
 博客地址：https://blog.csdn.net/sinat_21107433/article/details/102885567
+
+22.设计模式（二十二）——备忘录模式
+
+博客地址：https://blog.csdn.net/sinat_21107433/article/details/102907007