桥接模式（C++实现）

桥接模式：将抽象部分与它的实现部分分离，使它们都可以独立地变化。   实现系统可能有多角度分类，每一种分类都有可能变化，那么就把这种多角度分离出来，让它们独立变化，减少它们之间的耦合。



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#include <iostream>

using namespace std;

class HandsetSoft
{
public:
virtual void Run() = 0;

virtual ~HandsetSoft(){}
};

class HandsetGame : public HandsetSoft
{
public:
void Run()
{
cout<<"运行手机游戏"<<endl;
}

~HandsetGame()
{}

};

class HandsetAddressList : public HandsetSoft
{
public:
void Run()
{
cout<<"运行手机通讯录"<<endl;
}

~HandsetAddressList()
{}
};

class HandsetBrand
{
protected:
HandsetSoft* soft;

public:
void SetHandsetSoft(HandsetSoft* soft)
{
this->soft = soft;
}

virtual void Run() = 0;

virtual ~HandsetBrand() {}
};

class HandsetBrandN : public HandsetBrand
{
public:
void Run()
{
soft->Run();
}

~HandsetBrandN() {}
};

class HandsetBrandM : public HandsetBrand
{
public:
void Run()
{
soft->Run();
}

~HandsetBrandM() {}
};

int main()
{
HandsetBrand* ab;
HandsetBrandN hbn;
HandsetGame hg;

ab = &hbn;
ab->SetHandsetSoft(&hg);
ab->Run();
HandsetAddressList hl;
ab->SetHandsetSoft(&hl);
ab->Run();

HandsetBrandM hbm;
ab = &hbm;
ab->SetHandsetSoft(&hg);
ab->Run();
ab->SetHandsetSoft(&hl);
ab->Run();

return 0;

}