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1 package JSci.mathml;
2
3 import org.w3c.dom.*;
4 import org.w3c.dom.mathml.*;
5 import org.apache.xerces.dom.*;
6
7
12 public class MathMLVectorElementImpl extends MathMLElementImpl implements MathMLVectorElement {
13
16 public MathMLVectorElementImpl(MathMLDocumentImpl owner, String  qualifiedName) {
17 super(owner, qualifiedName);
18 }
19
20 public int getNcomponents() {
21 return getComponentsGetLength();
22 }
23
24 public MathMLContentElement getComponent(int index) throws DOMException {
25 Node component = getComponentsItem(index-1);
26 if (component == null) {
27 throw new DOMException(DOMException.INDEX_SIZE_ERR, "Index out of bounds");
28 }
29 return (MathMLContentElement) component;
30 }
31 public MathMLContentElement setComponent(MathMLContentElement newComponent, int index) throws DOMException {
32 final int componentsLength = getComponentsGetLength();
33
34 if ((index < 1) || (index > componentsLength+1)) {
35 throw new DOMException(DOMException.INDEX_SIZE_ERR, "Index out of bounds");
36 }
37 if (index == componentsLength+1) {
38 return (MathMLContentElement) appendChild(newComponent);
39 } else {
40 return (MathMLContentElement) replaceChild(newComponent, getComponentsItem(index-1));
41 }
42 }
43 public MathMLContentElement insertComponent(MathMLContentElement newComponent, int index) throws DOMException {
44 final int componentsLength = getComponentsGetLength();
45
46 if ((index < 0) || (index > componentsLength+1)) {
47 throw new DOMException(DOMException.INDEX_SIZE_ERR, "Index out of bounds");
48 }
49 if ((index == 0) || (index == componentsLength+1)) {
50 return (MathMLContentElement) appendChild(newComponent);
51 } else {
52 return (MathMLContentElement) insertBefore(newComponent, getComponentsItem(index-1));
53 }
54 }
55 public MathMLContentElement removeComponent(int index) throws DOMException {
56 Node component = getComponentsItem(index-1);
57 if (component == null) {
58 throw new DOMException(DOMException.INDEX_SIZE_ERR, "Index out of bounds");
59 }
60 return (MathMLContentElement) removeChild(component);
61 }
62 public void deleteComponent(int index) throws DOMException {
63 removeComponent(index);
64 }
65
66 private int getComponentsGetLength() {
67 final int length = getLength();
68 int numComponents = 0;
69
70 for (int i = 0; i < length; i++) {
71 if (item(i) instanceof MathMLContentElement) {
72 numComponents++;
73 }
74 }
75 return numComponents;
76 }
77 private Node getComponentsItem(int index) {
78 final int componentsLength = getComponentsGetLength();
79
80 if ((index < 0) || (index >= componentsLength))
81 return null;
82
83 Node node = null;
84 int n = -1;
85 for (int i = 0; n < index; i++) {
86 node = item(i);
87 if (node instanceof MathMLContentElement) {
88 n++;
89 }
90 }
91 return node;
92 }
93 }
94
95 |
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