/***

* 命令模式

* 将一个请求封装成一个对象，从而让你使用不同的请求把客户端参数化

* 对请求排队或者记录请求日志，可以提供命令的撤销和恢复功能

* ***/

// 先抽象一个group

class Group{

public:

virtual void findGroup() = 0;

virtual void addFeature() = 0;

virtual void deleteFeature()= 0;

virtual void changeFeature() = 0;

virtual void plan() = 0;

};

class RequirementGroup:public Group{

public:

virtual void findGroup();

virtual void addFeature();

virtual void deleteFeature();

virtual void changeFeature();

virtual void plan();

};

class PageGroup:public Group{

public:

virtual void findGroup();

virtual void addFeature();

virtual void deleteFeature();

virtual void changeFeature();

virtual void plan();

};

class CodeGroup:public Group{

public:

virtual void findGroup();

virtual void addFeature();

virtual void deleteFeature();

virtual void changeFeature();

virtual void plan();

};

// 这时我需要抽象一个命令类，拿上面的下来用

class Command{

protected:

RequirementGroup *rg = new RequirementGroup();

PageGroup *pg = new PageGroup();

CodeGroup *cg = new CodeGroup();

public:

virtual void execute();

};

// 继承命令

class AddRequirementCommand:public Command{

public:

virtual void execute() override{ // 执行命令

Command::cg->findGroup();

Command::rg->findGroup();

}

};

// 负责人invoker

class Invoker{

private:

Command *command;

public:

void setCommand(Command *refcommand){

command = refcommand;

}

void action(){

command->execute();

}

};

int main(){

Invoker *trans = new Invoker();

Command *command=new AddRequirementCommand();

trans->setCommand(command);

trans->action();

return 0;

}