author | Kiiskinen Klaus (Nokia-D-MSW/Tampere) <klaus.kiiskinen@nokia.com> |
Fri, 08 May 2009 08:25:06 +0300 | |
changeset 8 | 7c90e6132015 |
parent 0 | dd21522fd290 |
permissions | -rw-r--r-- |
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/** |
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* This file is part of the DOM implementation for KDE. |
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* |
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* Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
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* (C) 1999 Antti Koivisto (koivisto@kde.org) |
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* Copyright (C) 2003 Apple Computer, Inc. |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Library General Public |
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* License as published by the Free Software Foundation; either |
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* version 2 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Library General Public License for more details. |
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* |
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* You should have received a copy of the GNU Library General Public License |
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* along with this library; see the file COPYING.LIB. If not, write to |
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
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* Boston, MA 02110-1301, USA. |
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*/ |
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#include "config.h" |
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#include "Text.h" |
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#include "Document.h" |
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#include "ExceptionCode.h" |
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#include "RenderText.h" |
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#include "TextBreakIterator.h" |
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#if ENABLE(SVG) |
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#include "RenderSVGInlineText.h" |
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#endif // ENABLE(SVG) |
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namespace WebCore { |
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// DOM Section 1.1.1 |
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// ### allow having children in text nodes for entities, comments etc. |
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Text::Text(Document *doc, const String &_text) |
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: CharacterData(doc, _text) |
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{ |
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} |
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Text::Text(Document *doc) |
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: CharacterData(doc) |
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{ |
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} |
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Text::~Text() |
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{ |
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} |
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Text *Text::splitText(unsigned offset, ExceptionCode& ec) |
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{ |
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ec = 0; |
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// FIXME: This does not copy markers |
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// INDEX_SIZE_ERR: Raised if the specified offset is negative or greater than |
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// the number of 16-bit units in data. |
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if (offset > str->length()) { |
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ec = INDEX_SIZE_ERR; |
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return 0; |
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} |
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// NO_MODIFICATION_ALLOWED_ERR: Raised if this node is readonly. |
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if (isReadOnlyNode()) { |
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ec = NO_MODIFICATION_ALLOWED_ERR; |
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return 0; |
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} |
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StringImpl *oldStr = str; |
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Text *newText = createNew(str->substring(offset, str->length()-offset)); |
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str = str->copy(); |
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str->ref(); |
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str->remove(offset, str->length()-offset); |
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dispatchModifiedEvent(oldStr); |
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oldStr->deref(); |
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|
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if (parentNode()) |
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parentNode()->insertBefore(newText,nextSibling(), ec); |
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if (ec) |
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return 0; |
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if (renderer()) |
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static_cast<RenderText*>(renderer())->setText(str); |
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return newText; |
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} |
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const AtomicString& Text::localName() const |
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{ |
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return textAtom; |
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} |
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String Text::nodeName() const |
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{ |
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return textAtom.domString(); |
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} |
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Node::NodeType Text::nodeType() const |
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{ |
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return TEXT_NODE; |
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} |
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PassRefPtr<Node> Text::cloneNode(bool /*deep*/) |
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|
111 |
{ |
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112 |
return document()->createTextNode(str); |
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113 |
} |
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|
114 |
|
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115 |
bool Text::rendererIsNeeded(RenderStyle *style) |
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116 |
{ |
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117 |
if (!CharacterData::rendererIsNeeded(style)) |
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|
118 |
return false; |
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|
119 |
|
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bool onlyWS = containsOnlyWhitespace(); |
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121 |
if (!onlyWS) |
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122 |
return true; |
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|
123 |
|
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124 |
RenderObject *par = parentNode()->renderer(); |
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125 |
|
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if (par->isTable() || par->isTableRow() || par->isTableSection() || par->isTableCol() || par->isFrameSet()) |
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127 |
return false; |
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|
128 |
|
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if (style->preserveNewline()) // pre/pre-wrap/pre-line always make renderers. |
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130 |
return true; |
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131 |
|
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132 |
RenderObject *prev = previousRenderer(); |
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if (prev && prev->isBR()) // <span><br/> <br/></span> |
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|
134 |
return false; |
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|
135 |
|
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136 |
if (par->isInlineFlow()) { |
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// <span><div/> <div/></span> |
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138 |
if (prev && !prev->isInline()) |
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139 |
return false; |
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140 |
} else { |
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if (par->isRenderBlock() && !par->childrenInline() && (!prev || !prev->isInline())) |
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|
142 |
return false; |
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|
143 |
|
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144 |
RenderObject *first = par->firstChild(); |
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while (first && first->isFloatingOrPositioned()) |
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146 |
first = first->nextSibling(); |
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RenderObject *next = nextRenderer(); |
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148 |
if (!first || next == first) |
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149 |
// Whitespace at the start of a block just goes away. Don't even |
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150 |
// make a render object for this text. |
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|
151 |
return false; |
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152 |
} |
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153 |
|
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|
154 |
return true; |
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155 |
} |
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|
156 |
|
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157 |
RenderObject *Text::createRenderer(RenderArena *arena, RenderStyle *style) |
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|
158 |
{ |
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|
159 |
#if ENABLE(SVG) |
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160 |
if (parentNode()->isSVGElement()) |
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161 |
return new (arena) RenderSVGInlineText(this, str); |
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162 |
#endif // ENABLE(SVG) |
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163 |
|
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164 |
return new (arena) RenderText(this, str); |
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|
165 |
} |
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|
166 |
|
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167 |
void Text::attach() |
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168 |
{ |
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169 |
createRendererIfNeeded(); |
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170 |
CharacterData::attach(); |
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|
171 |
} |
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|
172 |
|
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|
173 |
void Text::recalcStyle( StyleChange change ) |
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|
174 |
{ |
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|
175 |
if (change != NoChange && parentNode()) |
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|
176 |
if (renderer()) |
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|
177 |
renderer()->setStyle(parentNode()->renderer()->style()); |
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|
178 |
if (changed() && renderer() && renderer()->isText()) |
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|
179 |
static_cast<RenderText*>(renderer())->setText(str); |
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|
180 |
setChanged(NoStyleChange); |
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|
181 |
} |
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|
182 |
|
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|
183 |
// DOM Section 1.1.1 |
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184 |
bool Text::childTypeAllowed(NodeType) |
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|
185 |
{ |
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|
186 |
return false; |
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|
187 |
} |
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|
188 |
|
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|
189 |
Text *Text::createNew(StringImpl *_str) |
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|
190 |
{ |
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|
191 |
return new Text(document(), _str); |
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|
192 |
} |
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|
193 |
|
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|
194 |
String Text::toString() const |
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|
195 |
{ |
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|
196 |
// FIXME: substitute entity references as needed! |
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|
197 |
return nodeValue(); |
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|
198 |
} |
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|
199 |
|
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|
200 |
PassRefPtr<Text> Text::createWithLengthLimit(Document* doc, const String& text, unsigned& charsLeft, unsigned maxChars) |
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|
201 |
{ |
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|
202 |
if (charsLeft == text.length() && charsLeft <= maxChars) { |
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|
203 |
charsLeft = 0; |
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|
204 |
return new Text(doc, text); |
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|
205 |
} |
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|
206 |
|
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|
207 |
unsigned start = text.length() - charsLeft; |
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|
208 |
unsigned end = start + std::min(charsLeft, maxChars); |
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|
209 |
|
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|
210 |
// check we are not on an unbreakable boundary |
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Revision: 200911
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|
211 |
TextBreakIterator* it = characterBreakIterator(text.characters(), text.length()); |
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|
212 |
if (end < text.length() && !isTextBreak(it, end)) |
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Revision: 200911
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|
213 |
end = textBreakPreceding(it, end); |
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|
214 |
|
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parents:
diff
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|
215 |
// maxChars of unbreakable characters could lead to infinite loop |
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Revision: 200911
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|
216 |
if (end <= start) |
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|
217 |
end = text.length(); |
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|
218 |
|
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Revision: 200911
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|
219 |
String nodeText = text.substring(start, end - start); |
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Revision: 200911
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|
220 |
charsLeft = text.length() - end; |
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Revision: 200911
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return new Text(doc, nodeText); |
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} |
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#ifndef NDEBUG |
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void Text::formatForDebugger(char *buffer, unsigned length) const |
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{ |
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String result; |
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String s; |
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s = nodeName(); |
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if (s.length() > 0) { |
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result += s; |
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} |
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s = nodeValue(); |
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if (s.length() > 0) { |
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if (result.length() > 0) |
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result += "; "; |
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result += "value="; |
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result += s; |
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} |
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strncpy(buffer, result.deprecatedString().latin1(), length - 1); |
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} |
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#endif |
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} // namespace WebCore |