设计模式[4]-Command

Type: Behavioral

#include <iostream>
#include <vector>
using namespace std;

class Receiver
{
public:
    void action()
    {
        cout <<"Receiver Action"<<endl;;
    }
};

class Command
{
public:
    virtual void execute()=0;
};

class ConcreteCommand: public Command
{
public:
    ConcreteCommand(Receiver* pReceiver): m_pReceiver(pReceiver){};
    void execute()
    {
        m_pReceiver->action();
    };
private:
    Receiver* m_pReceiver;
};

class Invoker
{
public:
    void addCommand(Command *pCommand)
    {
        mCommand.push_back(pCommand);
        pCommand->execute();
    }
private:
    vector<Command*> mCommand;
};

int main()
{
    Receiver* pReceiver = new Receiver();
    Command*  pCommand  = new ConcreteCommand(pReceiver);
    Invoker*  pInvoker  = new Invoker();
    pInvoker->addCommand(pCommand);

    system("pause");
    return 0;
}