架构师训练营第三周作业

1.手写案例模式

（2）组合模式应用

package composite;



public class Component extends Printer{

private String element;



public Component(String element) {

this.element = element;

}



@Override

public void print() {

System.out.println(element);

}

}

package composite;



public class Constants {



public static final String WINDOWSFORM = "WinForm";

public static final String PICTURE = "Picture";

public static final String LOGIN = "Button";

public static final String REGISTER = "Button";

public static final String FRAME = "FRAME";

public static final String USERNAME = "Lable";

public static final String TEXTBOX = "TextBox";

public static final String PWD = "Lable";

public static final String PWDBOX = "PasswordBox";

public static final String CHECKBOX = "CheckBox";

public static final String REMEMBER = "TextBox";

public static final String LINK = "LinkLable";



}



package composite;



import java.util.ArrayList;

import java.util.List;



public class FormPrinter extends Printer{



public FormPrinter(List<Printer> framePrinters) {

framePrinters.forEach(this::add);

}



public FormPrinter(String ... components) {

for(String component:components){

this.add(new Component(component));

}

}

}



package composite;



import java.util.ArrayList;

import java.util.List;



public class FramePrinter extends Printer{



public FramePrinter(String... components) {

for(String component:components){

this.add(new Component(component));

}

}



@Override

protected void printThisBefore() {

System.out.println();

}



public FramePrinter(List<Component> components) {

components.forEach(this::add);

}

}

package composite;



import java.util.List;



public class OperSysPrinter extends Printer{

public OperSysPrinter(String... components) {

for(String component:components){

this.add(new Component(component));

}

}



@Override

protected void printThisBefore() {

System.out.println();

}



public OperSysPrinter(List<Printer> components) {

components.forEach(this::add);

}

}



package composite;



import java.util.ArrayList;

import java.util.List;



public abstract class Printer {

private List<Printer> elements = new ArrayList<Printer>();



public void add(Printer printer) {

elements.add(printer);

}



protected void printThisBefore() {

}



public void print() {

elements.forEach(Printer::print);

}

}

package composite;



import java.util.ArrayList;

import java.util.List;



public class WinConp {

public void print(){

//form子节点

FormPrinter subForm = new FormPrinter(Constants.PICTURE,Constants.LOGIN,Constants.REGISTER);

FramePrinter fram = new FramePrinter(Constants.FRAME,Constants.USERNAME,Constants.TEXTBOX,

Constants.PWD,Constants.PWDBOX,Constants.CHECKBOX,Constants.REMEMBER,Constants.LINK);



//组装frame层

List<Printer> list = new ArrayList<Printer>();

list.add(subForm);

list.add(fram);

FormPrinter formPrinter = new FormPrinter(list);



//组装window form层

List<Printer> windowsList = new ArrayList<Printer>();

OperSysPrinter subOperSys = new OperSysPrinter(Constants.WINDOWSFORM);

windowsList.add(subOperSys);

windowsList.add(formPrinter);

OperSysPrinter operSysPrinter = new OperSysPrinter(windowsList);

operSysPrinter.print();

}

}

package composite;



public class App {

public static void main(String[] args) {

WinConp winConp = new WinConp();

winConp.print();

}

}