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1
7
8 package org.dom4j.dom;
9
10 import java.util.ArrayList  ;
11 import java.util.List ;
12
13 import org.dom4j.Attribute;
14 import org.dom4j.DocumentFactory;
15 import org.dom4j.Namespace;
16 import org.dom4j.QName;
17 import org.dom4j.tree.DefaultElement;
18
19 import org.w3c.dom.DOMException ;
20 import org.w3c.dom.Document ;
21 import org.w3c.dom.NamedNodeMap ;
22 import org.w3c.dom.Node ;
23 import org.w3c.dom.NodeList ;
24
25
34 public class DOMElement extends DefaultElement implements org.w3c.dom.Element {
35
36 private static final DocumentFactory DOCUMENT_FACTORY = DOMDocumentFactory
37 .getInstance();
38
39 public DOMElement(String name) {
40 super(name);
41 }
42
43 public DOMElement(QName qname) {
44 super(qname);
45 }
46
47 public DOMElement(QName qname, int attributeCount) {
48 super(qname, attributeCount);
49 }
50
51 public DOMElement(String name, Namespace namespace) {
52 super(name, namespace);
53 }
54
55 public boolean supports(String feature, String version) {
58 return DOMNodeHelper.supports(this, feature, version);
59 }
60
61 public String getNamespaceURI() {
62 return getQName().getNamespaceURI();
63 }
64
65 public String getPrefix() {
66 return getQName().getNamespacePrefix();
67 }
68
69 public void setPrefix(String prefix) throws DOMException {
70 DOMNodeHelper.setPrefix(this, prefix);
71 }
72
73 public String getLocalName() {
74 return getQName().getName();
75 }
76
77 public String getNodeName() {
78 return getName();
79 }
80
81 public String getNodeValue() throws DOMException {
85 return null;
86 }
87
88 public void setNodeValue(String nodeValue) throws DOMException {
89 }
90
91 public org.w3c.dom.Node getParentNode() {
92 return DOMNodeHelper.getParentNode(this);
93 }
94
95 public NodeList getChildNodes() {
96 return DOMNodeHelper.createNodeList(content());
97 }
98
99 public org.w3c.dom.Node getFirstChild() {
100 return DOMNodeHelper.asDOMNode(node(0));
101 }
102
103 public org.w3c.dom.Node getLastChild() {
104 return DOMNodeHelper.asDOMNode(node(nodeCount() - 1));
105 }
106
107 public org.w3c.dom.Node getPreviousSibling() {
108 return DOMNodeHelper.getPreviousSibling(this);
109 }
110
111 public org.w3c.dom.Node getNextSibling() {
112 return DOMNodeHelper.getNextSibling(this);
113 }
114
115 public NamedNodeMap getAttributes() {
116 return new DOMAttributeNodeMap(this);
117 }
118
119 public Document getOwnerDocument() {
120 return DOMNodeHelper.getOwnerDocument(this);
121 }
122
123 public org.w3c.dom.Node insertBefore(org.w3c.dom.Node newChild,
124 org.w3c.dom.Node refChild) throws DOMException {
125 checkNewChildNode(newChild);
126
127 return DOMNodeHelper.insertBefore(this, newChild, refChild);
128 }
129
130 public org.w3c.dom.Node replaceChild(org.w3c.dom.Node newChild,
131 org.w3c.dom.Node oldChild) throws DOMException {
132 checkNewChildNode(newChild);
133
134 return DOMNodeHelper.replaceChild(this, newChild, oldChild);
135 }
136
137 public org.w3c.dom.Node removeChild(org.w3c.dom.Node oldChild)
138 throws DOMException {
139 return DOMNodeHelper.removeChild(this, oldChild);
140 }
141
142 public org.w3c.dom.Node appendChild(org.w3c.dom.Node newChild)
143 throws DOMException {
144 checkNewChildNode(newChild);
145
146 return DOMNodeHelper.appendChild(this, newChild);
147 }
148
149 private void checkNewChildNode(org.w3c.dom.Node newChild)
150 throws DOMException {
151 final int nodeType = newChild.getNodeType();
152
153 if (!((nodeType == Node.ELEMENT_NODE) || (nodeType == Node.TEXT_NODE)
154 || (nodeType == Node.COMMENT_NODE)
155 || (nodeType == Node.PROCESSING_INSTRUCTION_NODE)
156 || (nodeType == Node.CDATA_SECTION_NODE)
157 || (nodeType == Node.ENTITY_REFERENCE_NODE))) {
158 throw new DOMException (DOMException.HIERARCHY_REQUEST_ERR,
159 "Given node cannot be a child of element");
160 }
161 }
162
163 public boolean hasChildNodes() {
164 return nodeCount() > 0;
165 }
166
167 public org.w3c.dom.Node cloneNode(boolean deep) {
168 return DOMNodeHelper.cloneNode(this, deep);
169 }
170
171 public boolean isSupported(String feature, String version) {
172 return DOMNodeHelper.isSupported(this, feature, version);
173 }
174
175 public boolean hasAttributes() {
176 return DOMNodeHelper.hasAttributes(this);
177 }
178
179 public String getTagName() {
182 return getName();
183 }
184
185 public String getAttribute(String name) {
186 String answer = attributeValue(name);
187
188 return (answer != null) ? answer : "";
189 }
190
191 public void setAttribute(String name, String value) throws DOMException {
192 addAttribute(name, value);
193 }
194
195 public void removeAttribute(String name) throws DOMException {
196 Attribute attribute = attribute(name);
197
198 if (attribute != null) {
199 remove(attribute);
200 }
201 }
202
203 public org.w3c.dom.Attr getAttributeNode(String name) {
204 return DOMNodeHelper.asDOMAttr(attribute(name));
205 }
206
207 public org.w3c.dom.Attr setAttributeNode(org.w3c.dom.Attr newAttr)
208 throws DOMException {
209 if (this.isReadOnly()) {
210 throw new DOMException (DOMException.NO_MODIFICATION_ALLOWED_ERR,
211 "No modification allowed");
212 }
213
214 Attribute attribute = attribute(newAttr);
215
216 if (attribute != newAttr) {
217 if (newAttr.getOwnerElement() != null) {
218 throw new DOMException (DOMException.INUSE_ATTRIBUTE_ERR,
219 "Attribute is already in use");
220 }
221
222 Attribute newAttribute = createAttribute(newAttr);
223
224 if (attribute != null) {
225 attribute.detach();
226 }
227
228 add(newAttribute);
229 }
230
231 return DOMNodeHelper.asDOMAttr(attribute);
232 }
233
234 public org.w3c.dom.Attr removeAttributeNode(org.w3c.dom.Attr oldAttr)
235 throws DOMException {
236 Attribute attribute = attribute(oldAttr);
237
238 if (attribute != null) {
239 attribute.detach();
240
241 return DOMNodeHelper.asDOMAttr(attribute);
242 } else {
243 throw new DOMException (DOMException.NOT_FOUND_ERR,
244 "No such attribute");
245 }
246 }
247
248 public String getAttributeNS(String namespaceURI, String localName) {
249 Attribute attribute = attribute(namespaceURI, localName);
250
251 if (attribute != null) {
252 String answer = attribute.getValue();
253
254 if (answer != null) {
255 return answer;
256 }
257 }
258
259 return "";
260 }
261
262 public void setAttributeNS(String namespaceURI, String qualifiedName,
263 String value) throws DOMException {
264 Attribute attribute = attribute(namespaceURI, qualifiedName);
265
266 if (attribute != null) {
267 attribute.setValue(value);
268 } else {
269 QName qname = getQName(namespaceURI, qualifiedName);
270 addAttribute(qname, value);
271 }
272 }
273
274 public void removeAttributeNS(String namespaceURI, String localName)
275 throws DOMException {
276 Attribute attribute = attribute(namespaceURI, localName);
277
278 if (attribute != null) {
279 remove(attribute);
280 }
281 }
282
283 public org.w3c.dom.Attr getAttributeNodeNS(String namespaceURI,
284 String localName) {
285 Attribute attribute = attribute(namespaceURI, localName);
286
287 if (attribute != null) {
288 DOMNodeHelper.asDOMAttr(attribute);
289 }
290
291 return null;
292 }
293
294 public org.w3c.dom.Attr setAttributeNodeNS(org.w3c.dom.Attr newAttr)
295 throws DOMException {
296 Attribute attribute = attribute(newAttr.getNamespaceURI(), newAttr
297 .getLocalName());
298
299 if (attribute != null) {
300 attribute.setValue(newAttr.getValue());
301 } else {
302 attribute = createAttribute(newAttr);
303 add(attribute);
304 }
305
306 return DOMNodeHelper.asDOMAttr(attribute);
307 }
308
309 public NodeList getElementsByTagName(String name) {
310 ArrayList list = new ArrayList ();
311 DOMNodeHelper.appendElementsByTagName(list, this, name);
312
313 return DOMNodeHelper.createNodeList(list);
314 }
315
316 public NodeList getElementsByTagNameNS(String namespace, String lName) {
317 ArrayList list = new ArrayList ();
318 DOMNodeHelper.appendElementsByTagNameNS(list, this, namespace, lName);
319
320 return DOMNodeHelper.createNodeList(list);
321 }
322
323 public boolean hasAttribute(String name) {
324 return attribute(name) != null;
325 }
326
327 public boolean hasAttributeNS(String namespaceURI, String localName) {
328 return attribute(namespaceURI, localName) != null;
329 }
330
331 protected DocumentFactory getDocumentFactory() {
334 DocumentFactory factory = getQName().getDocumentFactory();
335
336 return (factory != null) ? factory : DOCUMENT_FACTORY;
337 }
338
339 protected Attribute attribute(org.w3c.dom.Attr attr) {
340 return attribute(DOCUMENT_FACTORY.createQName(attr.getLocalName(), attr
341 .getPrefix(), attr.getNamespaceURI()));
342 }
343
344 protected Attribute attribute(String namespaceURI, String localName) {
345 List attributes = attributeList();
346 int size = attributes.size();
347
348 for (int i = 0; i < size; i++) {
349 Attribute attribute = (Attribute) attributes.get(i);
350
351 if (localName.equals(attribute.getName())
352 && (((namespaceURI == null || namespaceURI.length() == 0)
353 && ((attribute.getNamespaceURI() == null)
354 || (attribute.getNamespaceURI().length() == 0)))
355 || ((namespaceURI != null) && namespaceURI
356 .equals(attribute.getNamespaceURI())))) {
357 return attribute;
358 }
359 }
360
361 return null;
362 }
363
364 protected Attribute createAttribute(org.w3c.dom.Attr newAttr) {
365 QName qname = null;
366 String name = newAttr.getLocalName();
367
368 if (name != null) {
369 String prefix = newAttr.getPrefix();
370 String uri = newAttr.getNamespaceURI();
371 qname = getDocumentFactory().createQName(name, prefix, uri);
372 } else {
373 name = newAttr.getName();
374 qname = getDocumentFactory().createQName(name);
375 }
376
377 return new DOMAttribute(qname, newAttr.getValue());
378 }
379
380 protected QName getQName(String namespace, String qualifiedName) {
381 int index = qualifiedName.indexOf(':');
382 String prefix = "";
383 String localName = qualifiedName;
384
385 if (index >= 0) {
386 prefix = qualifiedName.substring(0, index);
387 localName = qualifiedName.substring(index + 1);
388 }
389
390 return getDocumentFactory().createQName(localName, prefix, namespace);
391 }
392 }
393
394
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