[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。