设计模式 之 《组合模式》

 

GOOD：整体和部分可以被一致对待（如WORD中复制一个文字、一段文字、一篇文章都是一样的操作）

 

 

 

#ifndef __COMPOSITE_MODEL__
#define __COMPOSITE_MODEL__ #include <iostream>
#include <string>
#include <vector>
using namespace std;class Component
{
public:string m_strName;Component(string strName){m_strName = strName;}virtual void add(Component* com) = 0;virtual void display(int nDepth) = 0;
};class Leaf : public Component
{
public:Leaf(string strName) : Component(strName){}virtual void add(Component* com){cout<<"leaf can't add"<<endl;}virtual void display(int nDepth){string strtemp;for (int i=0; i<nDepth; ++i){strtemp += "-";}strtemp += m_strName;cout<<strtemp<<endl;}
};class Composite : public Component
{
private:vector<Component*> m_component;
public:Composite(string strName) : Component(strName) {}virtual void add(Component* com){m_component.push_back(com);}virtual void display(int nDepth){string strtemp;for(int i=0; i<nDepth; ++i){strtemp += "-";}strtemp += m_strName;cout<<strtemp<<endl;vector<Component*>::iterator iter = m_component.begin();while(iter!=m_component.end()){(*iter)->display(nDepth+2);iter++;}}
};#endif //__COMPOSITE_MODEL__/*
#include "CompositeModel.h"
int _tmain(int argc, _TCHAR* argv[])
{
Composite* p = new Composite("小王");
p->add(new Leaf("小李"));
p->add(new Leaf("小赵"));Composite* p1 = new Composite("小小五");
p1->add(new Leaf("大三"));p->add(p1);
p->display(1);return 0;
}
*/