Composite 组合模式1
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）
例：
#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 p=m_component.begin();
while (p!=m_component.end())
{
(*p)->Display(nDepth+2);
p++;
}
}
};
//客户端
#include "Model.h"
int main()
{
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;
}