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1
4 package org.oddjob.designer.model;
5
6 import java.util.ArrayList  ;
7 import java.util.List ;
8 import java.util.Observable ;
9 import java.util.Observer ;
10
11 import org.oddjob.designer.arooa.ElementWrapper;
12 import org.oddjob.designer.factory.DesignFactory;
13
14
20 abstract public class DesignAdult extends Observable {
21
22 private final List children = new ArrayList ();
23
24 protected DesignAdult parent;
25
26 private String [] supportedTypes;
27
28 private Observer observer = new Observer () {
29 public void update(Observable o, Object arg) {
30 DEObservable deo = (DEObservable) arg;
31 setChanged();
32 notifyObservers(DEObservable.childChanged(deo));
33 };
34 };
35
36 public DesignAdult() {
37
38 }
39
40 public void addChild(DesignElementType de) {
41 de.parent = this;
42 children.add(de);
43 setChanged();
44 notifyObservers(DEObservable.childAdded(de, children.size()));
45 de.addObserver(observer);
46 }
47
48 public void insertChild(int index, DesignElementType de) {
49 de.parent = this;
50 children.add(index, de);
51 setChanged();
52 notifyObservers(DEObservable.childAdded(de, index));
53 de.addObserver(observer);
54 }
55
56 public void removeChild(int index) {
57 DesignElementType de = (DesignElementType) children.remove(index);
58 de.parent = null;
59 de.deleteObserver(observer);
60 setChanged();
61 notifyObservers(DEObservable.childRemoved(de, index));
62 }
63
64
65 public void clearChildren() {
66 while (children.size() > 0) {
67 removeChild(0);
68 }
69 }
70
71 public DesignAdult parent() {
72 return parent;
73 }
74
75 protected ElementWrapper[] childElements() {
76 ElementWrapper[] results = new ElementWrapper[children.size()];
77 for (int i = 0; i < children.size(); ++i) {
78 ElementWrapper wrapper = new ElementWrapper(
79 ((DesignElementType) children.get(i)).type(),
80 children.get(i));
81 results[i] = wrapper;
82 }
83 return results;
84 }
85
86 public int childCount() {
87 return children.size();
88 }
89
90 public DesignElementType[] children() {
91 return (DesignElementType[]) children.toArray(new DesignElementType[0]);
92 }
93
94 public DesignElementType children(int index) {
95 return (DesignElementType) children.get(index);
96 }
97
98 public void supportedTypes(String [] supportedTypes) {
99 this.supportedTypes = supportedTypes;
100 }
101
102 public String [] supportedTypes() {
103 if (supportedTypes == null) {
104 return DesignFactory.supportedTypes(getClass());
105 }
106 return this.supportedTypes;
107 }
108
109 public DesignElementType createType(String type) {
110 return DesignFactory.createType(type);
111 }
112 }
113 |
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