1/* 2 * Copyright (C) 1997 Martin Jones (mjones@kde.org) 3 * (C) 1997 Torben Weis (weis@kde.org) 4 * (C) 1998 Waldo Bastian (bastian@kde.org) 5 * (C) 1999 Lars Knoll (knoll@kde.org) 6 * (C) 1999 Antti Koivisto (koivisto@kde.org) 7 * Copyright (C) 2003, 2004, 2005, 2006, 2010 Apple Inc. All rights reserved. 8 * 9 * This library is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU Library General Public 11 * License as published by the Free Software Foundation; either 12 * version 2 of the License, or (at your option) any later version. 13 * 14 * This library is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 17 * Library General Public License for more details. 18 * 19 * You should have received a copy of the GNU Library General Public License 20 * along with this library; see the file COPYING.LIB. If not, write to 21 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 22 * Boston, MA 02110-1301, USA. 23 */ 24 25#include "config.h" 26#include "core/html/HTMLTableCellElement.h" 27 28#include "core/CSSPropertyNames.h" 29#include "core/CSSValueKeywords.h" 30#include "core/HTMLNames.h" 31#include "core/dom/Attribute.h" 32#include "core/dom/ElementTraversal.h" 33#include "core/html/HTMLTableElement.h" 34#include "core/rendering/RenderTableCell.h" 35 36using std::max; 37using std::min; 38 39namespace blink { 40 41// Clamp rowspan and colspan at 8k. 42// Firefox used a limit of 8190 for rowspan but they changed it to 65,534. 43// (FIXME: We should consider increasing this limit (crbug.com/78577). 44// Firefox uses a limit of 1,000 for colspan and resets the value to 1 45// but we don't discriminate between rowspan / colspan as it is artificial. 46static const int maxColRowSpan = 8190; 47 48using namespace HTMLNames; 49 50inline HTMLTableCellElement::HTMLTableCellElement(const QualifiedName& tagName, Document& document) 51 : HTMLTablePartElement(tagName, document) 52{ 53} 54 55DEFINE_ELEMENT_FACTORY_WITH_TAGNAME(HTMLTableCellElement) 56 57int HTMLTableCellElement::colSpan() const 58{ 59 const AtomicString& colSpanValue = fastGetAttribute(colspanAttr); 60 return max(1, min(colSpanValue.toInt(), maxColRowSpan)); 61} 62 63int HTMLTableCellElement::rowSpan() const 64{ 65 const AtomicString& rowSpanValue = fastGetAttribute(rowspanAttr); 66 return max(1, min(rowSpanValue.toInt(), maxColRowSpan)); 67} 68 69int HTMLTableCellElement::cellIndex() const 70{ 71 if (!isHTMLTableRowElement(parentElement())) 72 return -1; 73 74 int index = 0; 75 for (const HTMLTableCellElement* element = Traversal<HTMLTableCellElement>::previousSibling(*this); element; element = Traversal<HTMLTableCellElement>::previousSibling(*element)) 76 ++index; 77 78 return index; 79} 80 81bool HTMLTableCellElement::isPresentationAttribute(const QualifiedName& name) const 82{ 83 if (name == nowrapAttr || name == widthAttr || name == heightAttr) 84 return true; 85 return HTMLTablePartElement::isPresentationAttribute(name); 86} 87 88void HTMLTableCellElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style) 89{ 90 if (name == nowrapAttr) 91 addPropertyToPresentationAttributeStyle(style, CSSPropertyWhiteSpace, CSSValueWebkitNowrap); 92 else if (name == widthAttr) { 93 if (!value.isEmpty()) { 94 int widthInt = value.toInt(); 95 if (widthInt > 0) // width="0" is ignored for compatibility with WinIE. 96 addHTMLLengthToStyle(style, CSSPropertyWidth, value); 97 } 98 } else if (name == heightAttr) { 99 if (!value.isEmpty()) { 100 int heightInt = value.toInt(); 101 if (heightInt > 0) // height="0" is ignored for compatibility with WinIE. 102 addHTMLLengthToStyle(style, CSSPropertyHeight, value); 103 } 104 } else 105 HTMLTablePartElement::collectStyleForPresentationAttribute(name, value, style); 106} 107 108void HTMLTableCellElement::parseAttribute(const QualifiedName& name, const AtomicString& value) 109{ 110 if (name == rowspanAttr) { 111 if (renderer() && renderer()->isTableCell()) 112 toRenderTableCell(renderer())->colSpanOrRowSpanChanged(); 113 } else if (name == colspanAttr) { 114 if (renderer() && renderer()->isTableCell()) 115 toRenderTableCell(renderer())->colSpanOrRowSpanChanged(); 116 } else 117 HTMLTablePartElement::parseAttribute(name, value); 118} 119 120const StylePropertySet* HTMLTableCellElement::additionalPresentationAttributeStyle() 121{ 122 if (HTMLTableElement* table = findParentTable()) 123 return table->additionalCellStyle(); 124 return 0; 125} 126 127bool HTMLTableCellElement::isURLAttribute(const Attribute& attribute) const 128{ 129 return attribute.name() == backgroundAttr || HTMLTablePartElement::isURLAttribute(attribute); 130} 131 132bool HTMLTableCellElement::hasLegalLinkAttribute(const QualifiedName& name) const 133{ 134 return (hasTagName(tdTag) && name == backgroundAttr) || HTMLTablePartElement::hasLegalLinkAttribute(name); 135} 136 137const QualifiedName& HTMLTableCellElement::subResourceAttributeName() const 138{ 139 return hasTagName(tdTag) ? backgroundAttr : HTMLTablePartElement::subResourceAttributeName(); 140} 141 142const AtomicString& HTMLTableCellElement::abbr() const 143{ 144 return fastGetAttribute(abbrAttr); 145} 146 147const AtomicString& HTMLTableCellElement::axis() const 148{ 149 return fastGetAttribute(axisAttr); 150} 151 152void HTMLTableCellElement::setColSpan(int n) 153{ 154 setIntegralAttribute(colspanAttr, n); 155} 156 157const AtomicString& HTMLTableCellElement::headers() const 158{ 159 return fastGetAttribute(headersAttr); 160} 161 162void HTMLTableCellElement::setRowSpan(int n) 163{ 164 setIntegralAttribute(rowspanAttr, n); 165} 166 167const AtomicString& HTMLTableCellElement::scope() const 168{ 169 return fastGetAttribute(scopeAttr); 170} 171 172HTMLTableCellElement* HTMLTableCellElement::cellAbove() const 173{ 174 RenderObject* cellRenderer = renderer(); 175 if (!cellRenderer) 176 return 0; 177 if (!cellRenderer->isTableCell()) 178 return 0; 179 180 RenderTableCell* tableCellRenderer = toRenderTableCell(cellRenderer); 181 RenderTableCell* cellAboveRenderer = tableCellRenderer->table()->cellAbove(tableCellRenderer); 182 if (!cellAboveRenderer) 183 return 0; 184 185 return toHTMLTableCellElement(cellAboveRenderer->node()); 186} 187 188} // namespace blink 189