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/*
* Copyright (C) 1997 Martin Jones (mjones@kde.org)
* (C) 1997 Torben Weis (weis@kde.org)
* (C) 1998 Waldo Bastian (bastian@kde.org)
* (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "HTMLTableCellElement.h"
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "ElementInlines.h"
#include "HTMLNames.h"
#include "HTMLParserIdioms.h"
#include "HTMLTableElement.h"
#include "NodeName.h"
#include "RenderTableCell.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLTableCellElement);
using namespace HTMLNames;
// These limits are defined in the HTML specification:
// - https://html.spec.whatwg.org/#dom-tdth-colspan
// - https://html.spec.whatwg.org/#dom-tdth-rowspan
static const unsigned minColspan = 1;
static const unsigned maxColspan = 1000;
static const unsigned defaultColspan = 1;
static const unsigned minRowspan = 0;
static const unsigned maxRowspan = 65534;
static const unsigned defaultRowspan = 1;
Ref<HTMLTableCellElement> HTMLTableCellElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new HTMLTableCellElement(tagName, document));
}
HTMLTableCellElement::HTMLTableCellElement(const QualifiedName& tagName, Document& document)
: HTMLTablePartElement(tagName, document)
{
ASSERT(hasLocalName(thTag->localName()) || hasLocalName(tdTag->localName()));
}
unsigned HTMLTableCellElement::colSpan() const
{
return clampHTMLNonNegativeIntegerToRange(attributeWithoutSynchronization(colspanAttr), minColspan, maxColspan, defaultColspan);
}
unsigned HTMLTableCellElement::rowSpan() const
{
// FIXME: a rowSpan equal to 0 should be allowed, and mean that the cell is to span all the remaining rows in the row group.
return std::max(1u, rowSpanForBindings());
}
unsigned HTMLTableCellElement::rowSpanForBindings() const
{
return clampHTMLNonNegativeIntegerToRange(attributeWithoutSynchronization(rowspanAttr), minRowspan, maxRowspan, defaultRowspan);
}
int HTMLTableCellElement::cellIndex() const
{
int index = 0;
if (!parentElement() || !parentElement()->hasTagName(trTag))
return -1;
for (const Node * node = previousSibling(); node; node = node->previousSibling()) {
if (node->hasTagName(tdTag) || node->hasTagName(thTag))
index++;
}
return index;
}
bool HTMLTableCellElement::hasPresentationalHintsForAttribute(const QualifiedName& name) const
{
switch (name.nodeName()) {
case AttributeNames::nowrapAttr:
case AttributeNames::widthAttr:
case AttributeNames::heightAttr:
return true;
default:
break;
}
return HTMLTablePartElement::hasPresentationalHintsForAttribute(name);
}
void HTMLTableCellElement::collectPresentationalHintsForAttribute(const QualifiedName& name, const AtomString& value, MutableStyleProperties& style)
{
switch (name.nodeName()) {
case AttributeNames::nowrapAttr:
addPropertyToPresentationalHintStyle(style, CSSPropertyWhiteSpaceCollapse, CSSValueCollapse);
addPropertyToPresentationalHintStyle(style, CSSPropertyTextWrap, CSSValueNowrap);
break;
case AttributeNames::widthAttr:
// width="0" is not allowed for compatibility with WinIE.
addHTMLLengthToStyle(style, CSSPropertyWidth, value, AllowZeroValue::No);
break;
case AttributeNames::heightAttr:
// width="0" is not allowed for compatibility with WinIE.
addHTMLLengthToStyle(style, CSSPropertyHeight, value, AllowZeroValue::No);
break;
default:
HTMLTablePartElement::collectPresentationalHintsForAttribute(name, value, style);
break;
}
}
void HTMLTableCellElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
HTMLTablePartElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
if (name == rowspanAttr || name == colspanAttr) {
if (is<RenderTableCell>(renderer()))
downcast<RenderTableCell>(*renderer()).colSpanOrRowSpanChanged();
}
}
const MutableStyleProperties* HTMLTableCellElement::additionalPresentationalHintStyle() const
{
if (auto table = findParentTable())
return table->additionalCellStyle();
return nullptr;
}
bool HTMLTableCellElement::isURLAttribute(const Attribute& attribute) const
{
return attribute.name() == backgroundAttr || HTMLTablePartElement::isURLAttribute(attribute);
}
String HTMLTableCellElement::abbr() const
{
return attributeWithoutSynchronization(abbrAttr);
}
String HTMLTableCellElement::axis() const
{
return attributeWithoutSynchronization(axisAttr);
}
void HTMLTableCellElement::setColSpan(unsigned n)
{
setAttributeWithoutSynchronization(colspanAttr, AtomString::number(limitToOnlyHTMLNonNegative(n, 1)));
}
String HTMLTableCellElement::headers() const
{
return attributeWithoutSynchronization(headersAttr);
}
void HTMLTableCellElement::setRowSpanForBindings(unsigned n)
{
setAttributeWithoutSynchronization(rowspanAttr, AtomString::number(limitToOnlyHTMLNonNegative(n, 1)));
}
const AtomString& HTMLTableCellElement::scope() const
{
// https://html.spec.whatwg.org/multipage/tables.html#attr-th-scope
static MainThreadNeverDestroyed<const AtomString> row("row"_s);
static MainThreadNeverDestroyed<const AtomString> col("col"_s);
static MainThreadNeverDestroyed<const AtomString> rowgroup("rowgroup"_s);
static MainThreadNeverDestroyed<const AtomString> colgroup("colgroup"_s);
const AtomString& value = attributeWithoutSynchronization(HTMLNames::scopeAttr);
if (equalIgnoringASCIICase(value, row))
return row;
if (equalIgnoringASCIICase(value, col))
return col;
if (equalIgnoringASCIICase(value, rowgroup))
return rowgroup;
if (equalIgnoringASCIICase(value, colgroup))
return colgroup;
return emptyAtom();
}
void HTMLTableCellElement::setScope(const AtomString& scope)
{
setAttributeWithoutSynchronization(scopeAttr, scope);
}
void HTMLTableCellElement::addSubresourceAttributeURLs(ListHashSet<URL>& urls) const
{
HTMLTablePartElement::addSubresourceAttributeURLs(urls);
addSubresourceURL(urls, document().completeURL(attributeWithoutSynchronization(backgroundAttr)));
}
HTMLTableCellElement* HTMLTableCellElement::cellAbove() const
{
auto* cellRenderer = renderer();
if (!is<RenderTableCell>(cellRenderer))
return nullptr;
auto& tableCellRenderer = downcast<RenderTableCell>(*cellRenderer);
auto* cellAboveRenderer = tableCellRenderer.table()->cellAbove(&tableCellRenderer);
if (!cellAboveRenderer)
return nullptr;
return downcast<HTMLTableCellElement>(cellAboveRenderer->element());
}
} // namespace WebCore
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