zhuyijun/CppDesignPattern
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

加入观察者模式

Browse Source
This commit is contained in:
Micooz 2014-10-05 12:29:10 +08:00
parent 6380f3790d
commit 1e66d6dc3d
9 changed files with 288 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
DesignPattern.sln
View File

@ -33,6 +33,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "StrategyPattern", "Strategy
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "StatePattern", "StatePattern\StatePattern.vcxproj", "{41488E20-770F-4E52-9402-A20E1029B56C}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ObserverPattern", "ObserverPattern\ObserverPattern.vcxproj", "{052C8FBE-6E06-4869-B779-B5AF6D5AEC65}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Win32 = Debug|Win32
@ -99,6 +101,10 @@ Global
{41488E20-770F-4E52-9402-A20E1029B56C}.Debug|Win32.Build.0 = Debug|Win32
{41488E20-770F-4E52-9402-A20E1029B56C}.Release|Win32.ActiveCfg = Release|Win32
{41488E20-770F-4E52-9402-A20E1029B56C}.Release|Win32.Build.0 = Release|Win32
{052C8FBE-6E06-4869-B779-B5AF6D5AEC65}.Debug|Win32.ActiveCfg = Debug|Win32
{052C8FBE-6E06-4869-B779-B5AF6D5AEC65}.Debug|Win32.Build.0 = Debug|Win32
{052C8FBE-6E06-4869-B779-B5AF6D5AEC65}.Release|Win32.ActiveCfg = Release|Win32
{052C8FBE-6E06-4869-B779-B5AF6D5AEC65}.Release|Win32.Build.0 = Release|Win32
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE

BIN
DesignPattern.v12.suo
View File

Binary file not shown.

31
ObserverPattern/Observer.cpp Normal file
View File

@ -0,0 +1,31 @@
#include "Observer.h"
#include "Subject.h"
Observer::~Observer() { }
Observer::Observer() { }
Subject* ConcreteObserver::GetSubject() {
return _sub;
}
ConcreteObserver::ConcreteObserver(Subject* sub) {
_sub = sub;
_sub->Attach(this);
}
ConcreteObserver::~ConcreteObserver() {
_sub->Detach(this);
//if (_sub != nullptr) {
// delete _sub;
//}
}
void ConcreteObserver::Update(Subject* sub) {
_st = sub->GetState();
PrintInfo();
}
void ConcreteObserver::PrintInfo() {
cout << "ConcreteObserver::PrintInfo\t" << _sub->GetState() << endl;
}

35
ObserverPattern/Observer.h Normal file
View File

@ -0,0 +1,35 @@
#ifndef OBSERVER_H
#define OBSERVER_H
#include <iostream>
#include <string>
#include "Subject.h"
using namespace std;
class Observer {
public:
virtual void Update(Subject* sub) = 0;
virtual void PrintInfo() = 0;
virtual ~Observer();
protected:
Observer();
string _st;
};
class ConcreteObserver :public Observer {
public:
virtual Subject* GetSubject();
ConcreteObserver(Subject* sub);
~ConcreteObserver();
void Update(Subject* sub);
void PrintInfo();
private:
Subject *_sub;
};
#endif //OBSERVER_H

19
ObserverPattern/ObserverPattern.cpp Normal file
View File

@ -0,0 +1,19 @@
#include "Subject.h"
#include "Observer.h"
int main() {
Subject *sub = new ConcreteSubject();
Observer *o1 = new ConcreteObserver(sub);
Observer *o2 = new ConcreteObserver(sub);
sub->SetState("old");
sub->Notify();
sub->SetState("new");
sub->Notify();
delete o1;
delete o2;
delete sub;
return 0;
}

90
ObserverPattern/ObserverPattern.vcxproj Normal file
View File

@ -0,0 +1,90 @@
<?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>{052C8FBE-6E06-4869-B779-B5AF6D5AEC65}</ProjectGuid>
<Keyword>Win32Proj</Keyword>
<RootNamespace>ObserverPattern</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>
</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>
</ClCompile>
<Link>
<SubSystem>Console</SubSystem>
<GenerateDebugInformation>true</GenerateDebugInformation>
<EnableCOMDATFolding>true</EnableCOMDATFolding>
<OptimizeReferences>true</OptimizeReferences>
</Link>
</ItemDefinitionGroup>
<ItemGroup>
<ClCompile Include="Observer.cpp" />
<ClCompile Include="ObserverPattern.cpp" />
<ClCompile Include="Subject.cpp" />
</ItemGroup>
<ItemGroup>
<ClInclude Include="Observer.h" />
<ClInclude Include="Subject.h" />
</ItemGroup>
<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
<ImportGroup Label="ExtensionTargets">
</ImportGroup>
</Project>

36
ObserverPattern/ObserverPattern.vcxproj.filters Normal file
View File

@ -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>
<ClCompile Include="ObserverPattern.cpp">
<Filter>源文件</Filter>
</ClCompile>
<ClCompile Include="Observer.cpp">
<Filter>源文件</Filter>
</ClCompile>
<ClCompile Include="Subject.cpp">
<Filter>源文件</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="Observer.h">
<Filter>源文件</Filter>
</ClInclude>
<ClInclude Include="Subject.h">
<Filter>源文件</Filter>
</ClInclude>
</ItemGroup>
</Project>

32
ObserverPattern/Subject.cpp Normal file
View File

@ -0,0 +1,32 @@
#include "Observer.h"
#include "Subject.h"
void Subject::Attach(Observer* obv) {
_obvs.push_front(obv);
}
void Subject::Detach(Observer* obv) {
if (obv != nullptr) {
_obvs.remove(obv);
}
}
void Subject::Notify() {
for (auto obv : _obvs) {
obv->Update(this);
}
}
Subject::~Subject() { }
Subject::Subject() {
//_obvs.clear();
}
string ConcreteSubject::GetState() {
return _st;
}
void ConcreteSubject::SetState(const string& st) {
_st = st;
}

39
ObserverPattern/Subject.h Normal file
View File

@ -0,0 +1,39 @@
#ifndef SUBJECT_H
#define SUBJECT_H
#include <iostream>
#include <list>
#include <string>
class Observer;
using namespace std;
class Subject {
public:
virtual void SetState(const string& st) = 0;
virtual string GetState() = 0;
virtual void Attach(Observer* obv);
virtual void Detach(Observer* obv);
virtual void Notify();
virtual ~Subject();
protected:
Subject();
private:
list<Observer*> _obvs;
};
class ConcreteSubject :public Subject {
public:
string GetState();
void SetState(const string& st);
private:
string _st;
};
#endif// SUBJECT_H