c++组合模式和原型模式一起使用

#include "stdafx.h"#include <iostream>#include <vector>using namespace std;class Component{public:virtual Component* clone() = 0;virtual void operation() = 0;virtual void Add(Component* pComponent) {}virtual void Remove(Component* pComponent) {}virtual Component* Getchild(int index) const {return 0;}virtual ~Component() {}};class Composite:public Component{public:Composite() {m_vector.clear();}Composite(const Composite& rhs);Component* clone();void Add(Component* pComponent);void Remove(Component* pComponent);Component* Getchild(int index) const;void operation();vector<Component*> GetData() const;private:vector<Component* > m_vector;};Component* Composite::clone(){return new Composite(*this);}Composite::Composite(const Composite& rhs){int nSize = rhs.GetData().size();m_vector.resize(nSize);//m_vector = rhs.GetData();//int a = 5;vector<Component*> vt = rhs.GetData();memcpy(&m_vector[0], &vt[0], nSize*sizeof(Component*));}vector<Component*> Composite::GetData() const{return m_vector;}void Composite::Add(Component* pComponent){m_vector.push_back(pComponent);}void Composite::Remove(Component* pComponent){vector<Component* >::iterator it = m_vector.begin();while(it != m_vector.end()){if(*it == pComponent){it = m_vector.erase(it);}else{++it;}}}Component* Composite::Getchild(int index) const{if(index >0 && index <= (int)m_vector.size()){return m_vector[index];}}void Composite::operation(){cout<<"this is the composite"<<endl;vector<Component*>::iterator it = m_vector.begin();while (it != m_vector.end()){(*it)->operation();++it;}}class Leaf:public Component{public:Leaf() {}Leaf(const Leaf& rhs) {}Component* clone() {return new Leaf(*this);}void operation() {cout<<"this is the leaf"<<endl;}};int _tmain(int argc, _TCHAR* argv[]){Component* pRoot = new Composite();Leaf* pLeafA = new Leaf();Leaf* pLeafB = new Leaf();pRoot->Add(pLeafA);pRoot->Add(pLeafB);cout<<"before the delete:"<<endl;pRoot->operation();Component* pRootOld = pRoot->clone();pRoot->Remove(pLeafA);cout<<endl<<"after remove a leaf:"<<endl;pRoot->operation();cout<<endl<<"the state before delete:"<<endl;pRootOld->operation();getchar();return 0;}