软件设计实验10

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。

直接放源码：

#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();

}