author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 01:32:07 +0300 | |
changeset 2 | 303757a437d3 |
parent 0 | 4f2f89ce4247 |
permissions | -rw-r--r-- |
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/** |
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* Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) |
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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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*/ |
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#include "config.h" |
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#if ENABLE(WML) |
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#include "WMLTableElement.h" |
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#include "Attribute.h" |
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#include "CSSPropertyNames.h" |
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#include "CSSValueKeywords.h" |
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#include "CharacterNames.h" |
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#include "Document.h" |
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#include "HTMLNames.h" |
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#include "NodeList.h" |
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#include "RenderObject.h" |
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#include "Text.h" |
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#include "WMLErrorHandling.h" |
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#include "WMLNames.h" |
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namespace WebCore { |
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using namespace WMLNames; |
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WMLTableElement::WMLTableElement(const QualifiedName& tagName, Document* doc) |
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: WMLElement(tagName, doc) |
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, m_columns(0) |
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{ |
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} |
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WMLTableElement::~WMLTableElement() |
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{ |
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} |
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bool WMLTableElement::mapToEntry(const QualifiedName& attrName, MappedAttributeEntry& result) const |
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{ |
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if (attrName == HTMLNames::alignAttr) { |
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result = eTable; |
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return false; |
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} |
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return WMLElement::mapToEntry(attrName, result); |
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} |
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void WMLTableElement::parseMappedAttribute(Attribute* attr) |
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{ |
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if (attr->name() == columnsAttr) { |
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bool isNumber = false; |
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m_columns = attr->value().string().toUIntStrict(&isNumber); |
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|
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// Spec: This required attribute specifies the number of columns for the table. |
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// The user agent must create a table with exactly the number of columns specified |
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// by the attribute value. It is an error to specify a value of zero ("0") |
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if (!m_columns || !isNumber) |
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reportWMLError(document(), WMLErrorInvalidColumnsNumberInTable); |
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} else if (attr->name() == HTMLNames::alignAttr) |
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m_alignment = parseValueForbiddingVariableReferences(attr->value()); |
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else |
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WMLElement::parseMappedAttribute(attr); |
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} |
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void WMLTableElement::finishParsingChildren() |
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{ |
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WMLElement::finishParsingChildren(); |
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if (!m_columns) { |
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reportWMLError(document(), WMLErrorInvalidColumnsNumberInTable); |
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return; |
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} |
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Vector<WMLElement*> rowElements = scanTableChildElements(this, trTag); |
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if (rowElements.isEmpty()) |
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return; |
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Vector<WMLElement*>::iterator it = rowElements.begin(); |
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Vector<WMLElement*>::iterator end = rowElements.end(); |
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for (; it != end; ++it) { |
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WMLElement* rowElement = (*it); |
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// Squeeze the table to fit in the desired number of columns |
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Vector<WMLElement*> columnElements = scanTableChildElements(rowElement, tdTag); |
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unsigned actualNumberOfColumns = columnElements.size(); |
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if (actualNumberOfColumns > m_columns) { |
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|
103 |
joinSuperflousColumns(columnElements, rowElement); |
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|
104 |
columnElements = scanTableChildElements(rowElement, tdTag); |
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|
105 |
} else if (actualNumberOfColumns < m_columns) { |
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|
106 |
padWithEmptyColumns(columnElements, rowElement); |
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|
107 |
columnElements = scanTableChildElements(rowElement, tdTag); |
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|
108 |
} |
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|
109 |
|
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110 |
// Layout cells according to the 'align' attribute |
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111 |
alignCells(columnElements, rowElement); |
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112 |
} |
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113 |
} |
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114 |
|
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115 |
Vector<WMLElement*> WMLTableElement::scanTableChildElements(WMLElement* startElement, const QualifiedName& tagName) const |
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116 |
{ |
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117 |
Vector<WMLElement*> childElements; |
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118 |
|
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119 |
RefPtr<NodeList> children = startElement->childNodes(); |
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120 |
if (!children) |
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121 |
return childElements; |
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122 |
|
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123 |
unsigned length = children->length(); |
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124 |
for (unsigned i = 0; i < length; ++i) { |
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125 |
Node* child = children->item(i); |
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126 |
if (child->hasTagName(tagName)) |
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127 |
childElements.append(static_cast<WMLElement*>(child)); |
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128 |
} |
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129 |
|
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130 |
return childElements; |
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131 |
} |
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132 |
|
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133 |
void WMLTableElement::transferAllChildrenOfElementToTargetElement(WMLElement* sourceElement, WMLElement* targetElement, unsigned startOffset) const |
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134 |
{ |
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135 |
RefPtr<NodeList> children = sourceElement->childNodes(); |
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136 |
if (!children) |
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137 |
return; |
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138 |
|
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|
139 |
ExceptionCode ec = 0; |
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|
140 |
|
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141 |
unsigned length = children->length(); |
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142 |
for (unsigned i = startOffset; i < length; ++i) { |
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143 |
RefPtr<Node> clonedNode = children->item(i)->cloneNode(true); |
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144 |
targetElement->appendChild(clonedNode.release(), ec); |
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145 |
ASSERT(ec == 0); |
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146 |
} |
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147 |
} |
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|
148 |
|
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149 |
bool WMLTableElement::tryMergeAdjacentTextCells(Node* item, Node* nextItem) const |
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150 |
{ |
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151 |
if (!item || !nextItem) |
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152 |
return false; |
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153 |
|
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154 |
if (!item->isTextNode() || !nextItem->isTextNode()) |
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155 |
return false; |
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|
156 |
|
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157 |
Text* itemText = static_cast<Text*>(item); |
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158 |
Text* nextItemText = static_cast<Text*>(nextItem); |
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|
159 |
|
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|
160 |
String newContent = " "; |
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|
161 |
newContent += nextItemText->data(); |
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|
162 |
|
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|
163 |
ExceptionCode ec = 0; |
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|
164 |
itemText->appendData(newContent, ec); |
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|
165 |
ASSERT(ec == 0); |
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|
166 |
|
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|
167 |
return true; |
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|
168 |
} |
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|
169 |
|
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|
170 |
void WMLTableElement::joinSuperflousColumns(Vector<WMLElement*>& columnElements, WMLElement* rowElement) const |
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171 |
{ |
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172 |
// Spec: If the actual number of columns in a row is greater than the value specified |
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|
173 |
// by this attribute, the extra columns of the row must be aggregated into the last |
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174 |
// column such that the row contains exactly the number of columns specified. |
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|
175 |
WMLElement* lastColumn = columnElements.at(m_columns - 1); |
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|
176 |
ASSERT(lastColumn); |
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|
177 |
|
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|
178 |
// Merge superflous columns into a single one |
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|
179 |
RefPtr<WMLElement> newCell = WMLElement::create(tdTag, document()); |
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|
180 |
transferAllChildrenOfElementToTargetElement(lastColumn, newCell.get(), 0); |
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|
181 |
|
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|
182 |
ExceptionCode ec = 0; |
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|
183 |
unsigned actualNumberOfColumns = columnElements.size(); |
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|
184 |
|
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|
185 |
for (unsigned i = m_columns; i < actualNumberOfColumns; ++i) { |
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|
186 |
WMLElement* columnElement = columnElements.at(i); |
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|
187 |
unsigned startOffset = 0; |
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|
188 |
|
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|
189 |
// Spec: A single inter-word space must be inserted between two cells that are being aggregated. |
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|
190 |
if (tryMergeAdjacentTextCells(newCell->lastChild(), columnElement->firstChild())) |
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|
191 |
++startOffset; |
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|
192 |
|
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|
193 |
transferAllChildrenOfElementToTargetElement(columnElement, newCell.get(), startOffset); |
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|
194 |
} |
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|
195 |
|
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|
196 |
// Remove the columns, that have just been merged |
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|
197 |
unsigned i = actualNumberOfColumns; |
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|
198 |
for (; i > m_columns; --i) { |
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|
199 |
rowElement->removeChild(columnElements.at(i - 1), ec); |
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|
200 |
ASSERT(ec == 0); |
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|
201 |
} |
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|
202 |
|
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|
203 |
// Replace the last column in the row with the new merged column |
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|
204 |
rowElement->replaceChild(newCell.release(), lastColumn, ec); |
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|
205 |
ASSERT(ec == 0); |
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|
206 |
} |
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void WMLTableElement::padWithEmptyColumns(Vector<WMLElement*>& columnElements, WMLElement* rowElement) const |
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{ |
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// Spec: If the actual number of columns in a row is less than the value specified by the columns |
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// attribute, the row must be padded with empty columns effectively as if the user agent |
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// appended empty td elements to the row. |
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ExceptionCode ec = 0; |
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for (unsigned i = columnElements.size(); i < m_columns; ++i) { |
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RefPtr<WMLElement> newCell = WMLElement::create(tdTag, document()); |
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rowElement->appendChild(newCell.release(), ec); |
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ASSERT(ec == 0); |
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} |
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} |
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void WMLTableElement::alignCells(Vector<WMLElement*>& columnElements, WMLElement* rowElement) const |
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{ |
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// Spec: User agents should consider the current language when determining |
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// the default alignment and the direction of the table. |
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bool rtl = false; |
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if (RenderObject* renderer = rowElement->renderer()) { |
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if (RenderStyle* style = renderer->style()) |
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rtl = style->direction() == RTL; |
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} |
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rowElement->setAttribute(HTMLNames::alignAttr, rtl ? "right" : "left"); |
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if (m_alignment.isEmpty()) |
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return; |
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unsigned alignLength = m_alignment.length(); |
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Vector<WMLElement*>::iterator it = columnElements.begin(); |
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Vector<WMLElement*>::iterator end = columnElements.end(); |
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for (unsigned i = 0; it != end; ++it, ++i) { |
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if (i == alignLength) |
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break; |
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String alignmentValue; |
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switch (m_alignment[i]) { |
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case 'C': |
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alignmentValue = "center"; |
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break; |
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case 'L': |
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alignmentValue = "left"; |
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break; |
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case 'R': |
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alignmentValue = "right"; |
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break; |
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default: |
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break; |
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} |
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if (alignmentValue.isEmpty()) |
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continue; |
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(*it)->setAttribute(HTMLNames::alignAttr, alignmentValue); |
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} |
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} |
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} |
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#endif |