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1 package antlr.debug.misc;
2
3
9
10 import antlr.collections.AST;
11
12 import javax.swing.*;
13 import javax.swing.event.*;
14 import javax.swing.tree.*;
15
16 public class JTreeASTModel implements TreeModel {
17
18 AST root = null;
19
20 public JTreeASTModel(AST t) {
21 if (t == null) {
22 throw new IllegalArgumentException  ("root is null");
23 }
24 root = t;
25 }
26
27 public void addTreeModelListener(TreeModelListener l) {
28 }
29
30 public Object getChild(Object parent, int index) {
31 if (parent == null) {
32 return null;
33 }
34 AST p = (AST)parent;
35 AST c = p.getFirstChild();
36 if (c == null) {
37 throw new ArrayIndexOutOfBoundsException ("node has no children");
38 }
39 int i = 0;
40 while (c != null && i < index) {
41 c = c.getNextSibling();
42 i++;
43 }
44 return c;
45 }
46
47 public int getChildCount(Object parent) {
48 if (parent == null) {
49 throw new IllegalArgumentException ("root is null");
50 }
51 AST p = (AST)parent;
52 AST c = p.getFirstChild();
53 int i = 0;
54 while (c != null) {
55 c = c.getNextSibling();
56 i++;
57 }
58 return i;
59 }
60
61 public int getIndexOfChild(Object parent, Object child) {
62 if (parent == null || child == null) {
63 throw new IllegalArgumentException ("root or child is null");
64 }
65 AST p = (AST)parent;
66 AST c = p.getFirstChild();
67 if (c == null) {
68 throw new ArrayIndexOutOfBoundsException ("node has no children");
69 }
70 int i = 0;
71 while (c != null && c != child) {
72 c = c.getNextSibling();
73 i++;
74 }
75 if (c == child) {
76 return i;
77 }
78 throw new java.util.NoSuchElementException ("node is not a child");
79 }
80
81 public Object getRoot() {
82 return root;
83 }
84
85 public boolean isLeaf(Object node) {
86 if (node == null) {
87 throw new IllegalArgumentException ("node is null");
88 }
89 AST t = (AST)node;
90 return t.getFirstChild() == null;
91 }
92
93 public void removeTreeModelListener(TreeModelListener l) {
94 }
95
96 public void valueForPathChanged(TreePath path, Object newValue) {
97 System.out.println("heh, who is calling this mystery method?");
98 }
99 }
100 |
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