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| 1 | +package com.anxpp.designpattern.Composite; |
| 2 | +import java.util.ArrayList; |
| 3 | +import java.util.Iterator; |
| 4 | +import java.util.List; |
| 5 | +public class Folder implements Component { |
| 6 | + private String name; |
| 7 | + private List<Component> files; |
| 8 | + private List<Component> folders; |
| 9 | + public Folder(String name){ |
| 10 | + this.name = name; |
| 11 | + files = new ArrayList<Component>(); |
| 12 | + folders = new ArrayList<Component>(); |
| 13 | + } |
| 14 | + @Override |
| 15 | + public void addFile(Component file) { |
| 16 | + files.add(file); |
| 17 | + } |
| 18 | + @Override |
| 19 | + public Component addFolder(Component folder) { |
| 20 | + folders.add(folder); |
| 21 | + return this; |
| 22 | + } |
| 23 | + @Override |
| 24 | + public void removeFile(Component file) { |
| 25 | + files.remove(file); |
| 26 | + } |
| 27 | + @Override |
| 28 | + public void removeFolder(Component folder) { |
| 29 | + folders.remove(folder); |
| 30 | + } |
| 31 | + @Override |
| 32 | + public List<Component> getFiles() { |
| 33 | + return files; |
| 34 | + } |
| 35 | + @Override |
| 36 | + public List<Component> getFolders() { |
| 37 | + return folders; |
| 38 | + } |
| 39 | + @Override |
| 40 | + public List<Component> getAll() { |
| 41 | + List<Component> all = new ArrayList<Component>(folders); |
| 42 | + all.addAll(files); |
| 43 | + return all; |
| 44 | + } |
| 45 | + @Override |
| 46 | + public Iterator<Component> iterator() { |
| 47 | + List<Component> all = new ArrayList<Component>(); |
| 48 | + add(all,this); |
| 49 | + return all.iterator(); |
| 50 | + } |
| 51 | + private void add(List<Component> all,Component component){ |
| 52 | + if(component==null) return; |
| 53 | + all.add(component); |
| 54 | + Iterator<Component> iterator = component.getFolders().iterator(); |
| 55 | + while(iterator.hasNext()){ |
| 56 | + add(all,iterator.next()); |
| 57 | + } |
| 58 | + all.addAll(component.getFiles()); |
| 59 | + } |
| 60 | + @Override |
| 61 | + public void display() { |
| 62 | + System.out.println(name); |
| 63 | + } |
| 64 | +} |
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