实验10：组合模式

 

[实验任务一]：组合模式

用透明组合模式实现教材中的“文件夹浏览”这个例子。

实验要求：

1.  文件的执行不需真正实现，只需简单提示即可；

 

 

2.  提交源代码；

#pragma once

#include<iostream>

#include<string>

#include<vector>

using namespace std;

class AbstractFile

{

public: virtual void add(AbstractFile* ele) = 0;

      virtual void remove(AbstractFile* ele) = 0;

      virtual void display() = 0;

};

class TextFile :public AbstractFile {

 

private: string filename;

 

public: TextFile(string f) {

    filename = f;

}

      void add(AbstractFile* ele) {

          // TODO Auto-generated method stub

          cout << "添加Text文件" << endl;

      }

 

      void remove(AbstractFile* ele) {

          // TODO Auto-generated method stub

          cout << "删除Text文件" << endl;

      }

      void display() {

          // TODO Auto-generated method stub

          cout << "展示Text文件" << filename << endl;

      }

 

};

class ImageFile :public AbstractFile {

 

private: string filename;

 

public: ImageFile(string f) {

    filename = f;

}

      void add(AbstractFile* ele) {

          // TODO Auto-generated method stub

          cout << "添加Image文件" << endl;

      }

 

      void remove(AbstractFile* ele) {

          // TODO Auto-generated method stub

          cout << "删除Image文件" << endl;

      }

      void display() {

          // TODO Auto-generated method stub

          cout << "展示Image文件" << filename << endl;

      }

 

};

class VideoFile :public AbstractFile {

 

private: string filename;

 

public: VideoFile(string f) {

    filename = f;

}

      void add(AbstractFile* ele) {

          // TODO Auto-generated method stub

          cout << "添加Video文件" << endl;

      }

 

      void remove(AbstractFile* ele) {

          // TODO Auto-generated method stub

          cout << "删除Video文件" << endl;

      }

      void display() {

          // TODO Auto-generated method stub

          cout << "展示Video文件" << filename << endl;

      }

 

};

class Folder :public AbstractFile {

 

private: string filename;

private:vector<AbstractFile* > va;

 

public: Folder(string f) {

    filename = f;

}

      void add(AbstractFile* ele) {

          // TODO Auto-generated method stub

          va.push_back(ele);

          cout << "Folder add" << endl;

      }

      void remove(AbstractFile* ele) {

          // TODO Auto-generated method stub

          vector<AbstractFile* >::iterator it;

          it = find(va.begin(), va.end(), ele);

          for (it != va.end();;) {

              va.erase(it);

          }

          cout << "Folder remove" << endl;

      }

      void display() {

          // TODO Auto-generated method stub

          for (vector<AbstractFile*>::const_iterator iter = va.begin(); iter != va.cend(); iter++) {

              (*iter)->display();

          }

          cout << "Folder:display" << endl;

 

      }

 

};

int main() {

    AbstractFile* obj1, * obj2, * obj3, * obj4, * obj5;

    Folder* plate1, * plate2, * plate3;

    obj1 = new ImageFile("aaa.png");

    obj2 = new TextFile("bbb.txt");

    plate1 = new Folder("ccc");

    plate1->add(obj1);

    plate1->add(obj2);

 

    obj3 = new VideoFile("ddd.mp3");

    obj4 = new VideoFile("eee.mp3");

    plate2 = new Folder("fff");

    plate2->add(obj3);

    plate2->add(obj4);

 

    obj5 = new ImageFile("ggg.jpg");

    plate3 = new Folder("hhh");

    plate3->add(plate1);

    plate3->add(plate2);

    plate3->add(obj5);

 

    plate3->display();

 

}

 

3.注意编程规范。