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1 package org.oddjob.designer.model;
2
3 import java.awt.Component  ;
4 import java.util.Enumeration ;
5 import java.util.Vector ;
6
7 import javax.swing.tree.TreeNode ;
8
9 import org.oddjob.Structural;
10 import org.oddjob.designer.view.FormFactory;
11 import org.oddjob.structural.StructuralEvent;
12 import org.oddjob.structural.StructuralListener;
13
14
20
21
22 public class DesignTreeNode
23 implements TreeNode , StructuralListener {
24
25
26 private final Vector nodeList = new Vector ();
27
28
29 final private DesignTreeNode parent;
30
31
32 final private DesignTreeModel model;
33
34
35 private final DesignComponent designComponent;
36
37 private Component detailView;
38
39
46 public DesignTreeNode(DesignTreeModel model,
47 DesignTreeNode parent, DesignComponent node) {
48
49 this.model = model;
50 this.parent = parent;
51 this.designComponent = node;
52 }
53
54 public void build() {
55 if (designComponent instanceof Structural) {
56 ((Structural)designComponent).addStructuralListener(this);
57 }
58 }
59
60 public DesignComponent getDesignComponent() {
61 return designComponent;
62 }
63
64
66 public Enumeration children() {
67 return nodeList.elements();
68 }
69
70 public boolean getAllowsChildren() {
71 return true;
72 }
73
74 public TreeNode getChildAt(int index) {
75 return (DesignTreeNode)nodeList.elementAt(index);
76 }
77
78 public int getChildCount() {
79 return nodeList.size();
80 }
81
82 public boolean isLeaf() {
83 return nodeList.size() == 0 ? true : false;
84 }
85
86 public int getIndex(TreeNode child) {
87
88 return nodeList.indexOf(child);
89 }
90
91 public TreeNode getParent() {
92
93 return parent;
94 }
95
96 public String toString() {
97
98 return designComponent.name();
99 }
100
101 public void childAdded(StructuralEvent e) {
102
103 int index = e.getIndex();
104 Object o = e.getChild();
105 if (!(o instanceof DesignComponent)) {
106 throw new IllegalStateException ("[" + o + "] is not a DesignComponent at in [" + designComponent + "]" );
107 }
108 DesignComponent childComponent = (DesignComponent) o;
109 DesignTreeNode child = new DesignTreeNode(model, this, childComponent);
110
111 synchronized (nodeList) {
112 nodeList.insertElementAt(child, index);
113 }
114
115 model.fireTreeNodesInserted(this, child, index);
116 child.build();
117 }
118
119 public void childRemoved(StructuralEvent e) {
120
121 int index = e.getIndex();
122 DesignTreeNode child = null;
123 synchronized (nodeList) {
124 child = (DesignTreeNode)nodeList.elementAt(index);
125 nodeList.removeElementAt(index);
126 }
127 child.destroy();
128
129 model.fireTreeNodesRemoved(this, child, index);
130 }
131
132 public void destroy() {
133 while (nodeList.size() > 0) {
134 int index= nodeList.size() - 1;
135 DesignTreeNode child = (DesignTreeNode)nodeList.remove(index);
136 child.destroy();
137 model.fireTreeNodesRemoved(this, child, index);
138 }
139
140 if (designComponent instanceof Structural) {
141 ((Structural)designComponent).removeStructuralListener(this);
142 }
143 }
144
145
148 public Component getDetailView() {
149 if (detailView == null) {
150 detailView = FormFactory.createForm(designComponent.form());
151 }
152 return detailView;
153 }
154 }
155 |
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