1 /*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 1999 Antti Koivisto (koivisto@kde.org)
4 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB. If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22 #include "config.h"
23 #include "core/dom/CharacterData.h"
24
25 #include "bindings/v8/ExceptionState.h"
26 #include "core/dom/Document.h"
27 #include "core/dom/ExceptionCode.h"
28 #include "core/dom/MutationObserverInterestGroup.h"
29 #include "core/dom/MutationRecord.h"
30 #include "core/dom/ProcessingInstruction.h"
31 #include "core/dom/Text.h"
32 #include "core/editing/FrameSelection.h"
33 #include "core/events/MutationEvent.h"
34 #include "core/events/ThreadLocalEventNames.h"
35 #include "core/inspector/InspectorInstrumentation.h"
36
37 using namespace std;
38
39 namespace WebCore {
40
atomize()41 void CharacterData::atomize()
42 {
43 m_data = AtomicString(m_data);
44 }
45
setData(const String & data)46 void CharacterData::setData(const String& data)
47 {
48 const String& nonNullData = !data.isNull() ? data : emptyString();
49 if (m_data == nonNullData)
50 return;
51
52 RefPtr<CharacterData> protect = this;
53
54 unsigned oldLength = length();
55
56 setDataAndUpdate(nonNullData, 0, oldLength, nonNullData.length());
57 document().didRemoveText(this, 0, oldLength);
58 }
59
substringData(unsigned offset,unsigned count,ExceptionState & exceptionState)60 String CharacterData::substringData(unsigned offset, unsigned count, ExceptionState& exceptionState)
61 {
62 if (offset > length()) {
63 exceptionState.throwDOMException(IndexSizeError, "The offset " + String::number(offset) + " is greater than the node's length (" + String::number(length()) + ").");
64 return String();
65 }
66
67 return m_data.substring(offset, count);
68 }
69
parserAppendData(const String & string)70 void CharacterData::parserAppendData(const String& string)
71 {
72 unsigned oldLength = m_data.length();
73 m_data.append(string);
74
75 ASSERT(!renderer() || isTextNode());
76 if (isTextNode())
77 toText(this)->updateTextRenderer(oldLength, 0);
78
79 document().incDOMTreeVersion();
80
81 if (parentNode())
82 parentNode()->childrenChanged();
83 }
84
appendData(const String & data)85 void CharacterData::appendData(const String& data)
86 {
87 String newStr = m_data + data;
88
89 setDataAndUpdate(newStr, m_data.length(), 0, data.length());
90
91 // FIXME: Should we call textInserted here?
92 }
93
insertData(unsigned offset,const String & data,ExceptionState & exceptionState,RecalcStyleBehavior recalcStyleBehavior)94 void CharacterData::insertData(unsigned offset, const String& data, ExceptionState& exceptionState, RecalcStyleBehavior recalcStyleBehavior)
95 {
96 if (offset > length()) {
97 exceptionState.throwDOMException(IndexSizeError, "The offset " + String::number(offset) + " is greater than the node's length (" + String::number(length()) + ").");
98 return;
99 }
100
101 String newStr = m_data;
102 newStr.insert(data, offset);
103
104 setDataAndUpdate(newStr, offset, 0, data.length(), recalcStyleBehavior);
105
106 document().didInsertText(this, offset, data.length());
107 }
108
deleteData(unsigned offset,unsigned count,ExceptionState & exceptionState,RecalcStyleBehavior recalcStyleBehavior)109 void CharacterData::deleteData(unsigned offset, unsigned count, ExceptionState& exceptionState, RecalcStyleBehavior recalcStyleBehavior)
110 {
111 if (offset > length()) {
112 exceptionState.throwDOMException(IndexSizeError, "The offset " + String::number(offset) + " is greater than the node's length (" + String::number(length()) + ").");
113 return;
114 }
115
116 unsigned realCount;
117 if (offset + count > length())
118 realCount = length() - offset;
119 else
120 realCount = count;
121
122 String newStr = m_data;
123 newStr.remove(offset, realCount);
124
125 setDataAndUpdate(newStr, offset, count, 0, recalcStyleBehavior);
126
127 document().didRemoveText(this, offset, realCount);
128 }
129
replaceData(unsigned offset,unsigned count,const String & data,ExceptionState & exceptionState)130 void CharacterData::replaceData(unsigned offset, unsigned count, const String& data, ExceptionState& exceptionState)
131 {
132 if (offset > length()) {
133 exceptionState.throwDOMException(IndexSizeError, "The offset " + String::number(offset) + " is greater than the node's length (" + String::number(length()) + ").");
134 return;
135 }
136
137 unsigned realCount;
138 if (offset + count > length())
139 realCount = length() - offset;
140 else
141 realCount = count;
142
143 String newStr = m_data;
144 newStr.remove(offset, realCount);
145 newStr.insert(data, offset);
146
147 setDataAndUpdate(newStr, offset, count, data.length());
148
149 // update the markers for spell checking and grammar checking
150 document().didRemoveText(this, offset, realCount);
151 document().didInsertText(this, offset, data.length());
152 }
153
nodeValue() const154 String CharacterData::nodeValue() const
155 {
156 return m_data;
157 }
158
containsOnlyWhitespace() const159 bool CharacterData::containsOnlyWhitespace() const
160 {
161 return m_data.containsOnlyWhitespace();
162 }
163
setNodeValue(const String & nodeValue)164 void CharacterData::setNodeValue(const String& nodeValue)
165 {
166 setData(nodeValue);
167 }
168
setDataAndUpdate(const String & newData,unsigned offsetOfReplacedData,unsigned oldLength,unsigned newLength,RecalcStyleBehavior recalcStyleBehavior)169 void CharacterData::setDataAndUpdate(const String& newData, unsigned offsetOfReplacedData, unsigned oldLength, unsigned newLength, RecalcStyleBehavior recalcStyleBehavior)
170 {
171 String oldData = m_data;
172 m_data = newData;
173
174 ASSERT(!renderer() || isTextNode());
175 if (isTextNode())
176 toText(this)->updateTextRenderer(offsetOfReplacedData, oldLength, recalcStyleBehavior);
177
178 if (nodeType() == PROCESSING_INSTRUCTION_NODE)
179 toProcessingInstruction(this)->checkStyleSheet();
180
181 if (document().frame())
182 document().frame()->selection().didUpdateCharacterData(this, offsetOfReplacedData, oldLength, newLength);
183
184 document().incDOMTreeVersion();
185 didModifyData(oldData);
186 }
187
didModifyData(const String & oldData)188 void CharacterData::didModifyData(const String& oldData)
189 {
190 if (OwnPtr<MutationObserverInterestGroup> mutationRecipients = MutationObserverInterestGroup::createForCharacterDataMutation(*this))
191 mutationRecipients->enqueueMutationRecord(MutationRecord::createCharacterData(this, oldData));
192
193 if (parentNode())
194 parentNode()->childrenChanged();
195
196 if (!isInShadowTree()) {
197 if (document().hasListenerType(Document::DOMCHARACTERDATAMODIFIED_LISTENER))
198 dispatchScopedEvent(MutationEvent::create(EventTypeNames::DOMCharacterDataModified, true, 0, oldData, m_data));
199 dispatchSubtreeModifiedEvent();
200 }
201 InspectorInstrumentation::characterDataModified(this);
202 }
203
maxCharacterOffset() const204 int CharacterData::maxCharacterOffset() const
205 {
206 return static_cast<int>(length());
207 }
208
offsetInCharacters() const209 bool CharacterData::offsetInCharacters() const
210 {
211 return true;
212 }
213
214 } // namespace WebCore
215