1//
2// AbstractNode.cpp
3//
4// Library: XML
5// Package: DOM
6// Module: DOM
7//
8// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
9// and Contributors.
10//
11// SPDX-License-Identifier: BSL-1.0
12//
13
14
15#include "Poco/DOM/AbstractNode.h"
16#include "Poco/DOM/Document.h"
17#include "Poco/DOM/ChildNodesList.h"
18#include "Poco/DOM/EventDispatcher.h"
19#include "Poco/DOM/DOMException.h"
20#include "Poco/DOM/EventException.h"
21#include "Poco/DOM/DOMImplementation.h"
22#include "Poco/DOM/Attr.h"
23#include "Poco/XML/Name.h"
24#include "Poco/DOM/AutoPtr.h"
25
26
27namespace Poco {
28namespace XML {
29
30
31const XMLString AbstractNode::NODE_NAME = toXMLString("#node");
32const XMLString AbstractNode::EMPTY_STRING;
33
34
35AbstractNode::AbstractNode(Document* pOwnerDocument):
36 _pParent(0),
37 _pNext(0),
38 _pOwner(pOwnerDocument),
39 _pEventDispatcher(0)
40{
41}
42
43
44AbstractNode::AbstractNode(Document* pOwnerDocument, const AbstractNode& node):
45 _pParent(0),
46 _pNext(0),
47 _pOwner(pOwnerDocument),
48 _pEventDispatcher(0)
49{
50}
51
52
53AbstractNode::~AbstractNode()
54{
55 delete _pEventDispatcher;
56 if (_pNext) _pNext->release();
57}
58
59
60void AbstractNode::autoRelease()
61{
62 _pOwner->autoReleasePool().add(this);
63}
64
65
66const XMLString& AbstractNode::nodeName() const
67{
68 return NODE_NAME;
69}
70
71
72const XMLString& AbstractNode::getNodeValue() const
73{
74 return EMPTY_STRING;
75}
76
77
78void AbstractNode::setNodeValue(const XMLString& value)
79{
80 throw DOMException(DOMException::NO_DATA_ALLOWED_ERR);
81}
82
83
84Node* AbstractNode::parentNode() const
85{
86 return _pParent;
87}
88
89
90NodeList* AbstractNode::childNodes() const
91{
92 return new ChildNodesList(this);
93}
94
95
96Node* AbstractNode::firstChild() const
97{
98 return 0;
99}
100
101
102Node* AbstractNode::lastChild() const
103{
104 return 0;
105}
106
107
108Node* AbstractNode::previousSibling() const
109{
110 if (_pParent)
111 {
112 AbstractNode* pSibling = _pParent->_pFirstChild;
113 while (pSibling)
114 {
115 if (pSibling->_pNext == this) return pSibling;
116 pSibling = pSibling->_pNext;
117 }
118 }
119 return 0;
120}
121
122
123Node* AbstractNode::nextSibling() const
124{
125 return _pNext;
126}
127
128
129NamedNodeMap* AbstractNode::attributes() const
130{
131 return 0;
132}
133
134
135Document* AbstractNode::ownerDocument() const
136{
137 return _pOwner;
138}
139
140
141Node* AbstractNode::insertBefore(Node* newChild, Node* refChild)
142{
143 throw DOMException(DOMException::HIERARCHY_REQUEST_ERR);
144}
145
146
147Node* AbstractNode::replaceChild(Node* newChild, Node* oldChild)
148{
149 throw DOMException(DOMException::HIERARCHY_REQUEST_ERR);
150}
151
152
153Node* AbstractNode::removeChild(Node* oldChild)
154{
155 throw DOMException(DOMException::NO_MODIFICATION_ALLOWED_ERR);
156}
157
158
159Node* AbstractNode::appendChild(Node* newChild)
160{
161 throw DOMException(DOMException::HIERARCHY_REQUEST_ERR);
162}
163
164
165bool AbstractNode::hasChildNodes() const
166{
167 return false;
168}
169
170
171Node* AbstractNode::cloneNode(bool deep) const
172{
173 return copyNode(deep, _pOwner);
174}
175
176
177void AbstractNode::normalize()
178{
179}
180
181
182bool AbstractNode::isSupported(const XMLString& feature, const XMLString& version) const
183{
184 return DOMImplementation::instance().hasFeature(feature, version);
185}
186
187
188const XMLString& AbstractNode::namespaceURI() const
189{
190 return EMPTY_STRING;
191}
192
193
194XMLString AbstractNode::prefix() const
195{
196 return EMPTY_STRING;
197}
198
199
200const XMLString& AbstractNode::localName() const
201{
202 return EMPTY_STRING;
203}
204
205
206bool AbstractNode::hasAttributes() const
207{
208 return false;
209}
210
211
212XMLString AbstractNode::innerText() const
213{
214 return EMPTY_STRING;
215}
216
217
218Node* AbstractNode::getNodeByPath(const XMLString& path) const
219{
220 return 0;
221}
222
223
224Node* AbstractNode::getNodeByPathNS(const XMLString& path, const NSMap& nsMap) const
225{
226 return 0;
227}
228
229
230void AbstractNode::addEventListener(const XMLString& type, EventListener* listener, bool useCapture)
231{
232 if (_pEventDispatcher)
233 _pEventDispatcher->removeEventListener(type, listener, useCapture);
234 else
235 _pEventDispatcher = new EventDispatcher;
236
237 _pEventDispatcher->addEventListener(type, listener, useCapture);
238}
239
240
241void AbstractNode::removeEventListener(const XMLString& type, EventListener* listener, bool useCapture)
242{
243 if (_pEventDispatcher)
244 _pEventDispatcher->removeEventListener(type, listener, useCapture);
245}
246
247
248bool AbstractNode::dispatchEvent(Event* evt)
249{
250 if (eventsSuspended()) return true;
251
252 if (evt->type().empty()) throw EventException(EventException::UNSPECIFIED_EVENT_TYPE_ERR);
253
254 evt->setTarget(this);
255 evt->setCurrentPhase(Event::CAPTURING_PHASE);
256
257 if (_pParent) _pParent->captureEvent(evt);
258
259 if (_pEventDispatcher && !evt->isStopped())
260 {
261 evt->setCurrentPhase(Event::AT_TARGET);
262 evt->setCurrentTarget(this);
263 _pEventDispatcher->dispatchEvent(evt);
264 }
265 if (!evt->isStopped() && evt->bubbles() && _pParent)
266 {
267 evt->setCurrentPhase(Event::BUBBLING_PHASE);
268 _pParent->bubbleEvent(evt);
269 }
270
271 return evt->isCanceled();
272}
273
274
275void AbstractNode::captureEvent(Event* evt)
276{
277 if (_pParent)
278 _pParent->captureEvent(evt);
279
280 if (_pEventDispatcher && !evt->isStopped())
281 {
282 evt->setCurrentTarget(this);
283 _pEventDispatcher->captureEvent(evt);
284 }
285}
286
287
288void AbstractNode::bubbleEvent(Event* evt)
289{
290 evt->setCurrentTarget(this);
291 if (_pEventDispatcher)
292 {
293 _pEventDispatcher->bubbleEvent(evt);
294 }
295 if (_pParent && !evt->isStopped())
296 _pParent->bubbleEvent(evt);
297}
298
299
300void AbstractNode::dispatchSubtreeModified()
301{
302 AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMSubtreeModified, this, true, false, 0);
303 dispatchEvent(pEvent.get());
304}
305
306
307void AbstractNode::dispatchNodeInserted()
308{
309 AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMNodeInserted, this, true, false, parentNode());
310 dispatchEvent(pEvent.get());
311}
312
313
314void AbstractNode::dispatchNodeRemoved()
315{
316 AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMNodeRemoved, this, true, false, parentNode());
317 dispatchEvent(pEvent.get());
318}
319
320
321void AbstractNode::dispatchNodeRemovedFromDocument()
322{
323 AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMNodeRemovedFromDocument, this, false, false, 0);
324 dispatchEvent(pEvent.get());
325}
326
327
328void AbstractNode::dispatchNodeInsertedIntoDocument()
329{
330 AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMNodeInsertedIntoDocument, this, false, false, 0);
331 dispatchEvent(pEvent.get());
332}
333
334
335void AbstractNode::dispatchAttrModified(Attr* pAttr, MutationEvent::AttrChangeType changeType, const XMLString& prevValue, const XMLString& newValue)
336{
337 AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMAttrModified, this, true, false, pAttr, prevValue, newValue, pAttr->name(), changeType);
338 dispatchEvent(pEvent.get());
339}
340
341
342void AbstractNode::dispatchCharacterDataModified(const XMLString& prevValue, const XMLString& newValue)
343{
344 AutoPtr<MutationEvent> pEvent = new MutationEvent(_pOwner, MutationEvent::DOMCharacterDataModified, this, true, false, 0, prevValue, newValue, EMPTY_STRING, MutationEvent::MODIFICATION);
345 dispatchEvent(pEvent.get());
346}
347
348
349bool AbstractNode::events() const
350{
351 return _pOwner->events();
352}
353
354
355bool AbstractNode::eventsSuspended() const
356{
357 return _pOwner->eventsSuspended();
358}
359
360
361void AbstractNode::setOwnerDocument(Document* pOwnerDocument)
362{
363 _pOwner = pOwnerDocument;
364}
365
366
367} } // namespace Poco::XML
368