gecko-dev/dom/html/HTMLTableCellElement.cpp

292 строки
8.7 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/HTMLTableCellElement.h"
#include "mozilla/dom/HTMLTableElement.h"
#include "mozilla/dom/HTMLTableRowElement.h"
#include "mozilla/GenericSpecifiedValuesInlines.h"
#include "nsMappedAttributes.h"
#include "nsAttrValueInlines.h"
#include "nsRuleWalker.h"
#include "celldata.h"
#include "mozilla/dom/HTMLTableCellElementBinding.h"
NS_IMPL_NS_NEW_HTML_ELEMENT(TableCell)
namespace mozilla {
namespace dom {
HTMLTableCellElement::~HTMLTableCellElement()
{
}
JSObject*
HTMLTableCellElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
{
return HTMLTableCellElementBinding::Wrap(aCx, this, aGivenProto);
}
NS_IMPL_ISUPPORTS_INHERITED0(HTMLTableCellElement, nsGenericHTMLElement)
NS_IMPL_ELEMENT_CLONE(HTMLTableCellElement)
// protected method
HTMLTableRowElement*
HTMLTableCellElement::GetRow() const
{
return HTMLTableRowElement::FromContentOrNull(GetParent());
}
// protected method
HTMLTableElement*
HTMLTableCellElement::GetTable() const
{
nsIContent *parent = GetParent();
if (!parent) {
return nullptr;
}
// parent should be a row.
nsIContent* section = parent->GetParent();
if (!section) {
return nullptr;
}
if (section->IsHTMLElement(nsGkAtoms::table)) {
// XHTML, without a row group.
return static_cast<HTMLTableElement*>(section);
}
// We have a row group.
nsIContent* result = section->GetParent();
if (result && result->IsHTMLElement(nsGkAtoms::table)) {
return static_cast<HTMLTableElement*>(result);
}
return nullptr;
}
int32_t
HTMLTableCellElement::CellIndex() const
{
HTMLTableRowElement* row = GetRow();
if (!row) {
return -1;
}
nsIHTMLCollection* cells = row->Cells();
if (!cells) {
return -1;
}
uint32_t numCells = cells->Length();
for (uint32_t i = 0; i < numCells; i++) {
if (cells->Item(i) == this) {
return i;
}
}
return -1;
}
NS_IMETHODIMP
HTMLTableCellElement::WalkContentStyleRules(nsRuleWalker* aRuleWalker)
{
nsresult rv = nsGenericHTMLElement::WalkContentStyleRules(aRuleWalker);
NS_ENSURE_SUCCESS(rv, rv);
if (nsMappedAttributes* tableInheritedAttributes = GetMappedAttributesInheritedFromTable()) {
if (tableInheritedAttributes) {
aRuleWalker->Forward(tableInheritedAttributes);
}
}
return NS_OK;
}
nsMappedAttributes*
HTMLTableCellElement::GetMappedAttributesInheritedFromTable() const
{
if (HTMLTableElement* table = GetTable()) {
return table->GetAttributesMappedForCell();
}
return nullptr;
}
void
HTMLTableCellElement::GetAlign(DOMString& aValue)
{
if (!GetAttr(kNameSpaceID_None, nsGkAtoms::align, aValue)) {
// There's no align attribute, ask the row for the alignment.
HTMLTableRowElement* row = GetRow();
if (row) {
row->GetAlign(aValue);
}
}
}
static const nsAttrValue::EnumTable kCellScopeTable[] = {
{ "row", NS_STYLE_CELL_SCOPE_ROW },
{ "col", NS_STYLE_CELL_SCOPE_COL },
{ "rowgroup", NS_STYLE_CELL_SCOPE_ROWGROUP },
{ "colgroup", NS_STYLE_CELL_SCOPE_COLGROUP },
{ nullptr, 0 }
};
void
HTMLTableCellElement::GetScope(DOMString& aScope)
{
GetEnumAttr(nsGkAtoms::scope, nullptr, aScope);
}
bool
HTMLTableCellElement::ParseAttribute(int32_t aNamespaceID,
nsIAtom* aAttribute,
const nsAString& aValue,
nsAttrValue& aResult)
{
if (aNamespaceID == kNameSpaceID_None) {
/* ignore these attributes, stored simply as strings
abbr, axis, ch, headers
*/
if (aAttribute == nsGkAtoms::charoff) {
/* attributes that resolve to integers with a min of 0 */
return aResult.ParseIntWithBounds(aValue, 0);
}
if (aAttribute == nsGkAtoms::colspan) {
aResult.ParseClampedNonNegativeInt(aValue, 1, 1, MAX_COLSPAN);
return true;
}
if (aAttribute == nsGkAtoms::rowspan) {
aResult.ParseClampedNonNegativeInt(aValue, 1, 0, MAX_ROWSPAN);
// quirks mode does not honor the special html 4 value of 0
if (aResult.GetIntegerValue() == 0 && InNavQuirksMode(OwnerDoc())) {
aResult.SetTo(1, &aValue);
}
return true;
}
if (aAttribute == nsGkAtoms::height) {
return aResult.ParseSpecialIntValue(aValue);
}
if (aAttribute == nsGkAtoms::width) {
return aResult.ParseSpecialIntValue(aValue);
}
if (aAttribute == nsGkAtoms::align) {
return ParseTableCellHAlignValue(aValue, aResult);
}
if (aAttribute == nsGkAtoms::bgcolor) {
return aResult.ParseColor(aValue);
}
if (aAttribute == nsGkAtoms::scope) {
return aResult.ParseEnumValue(aValue, kCellScopeTable, false);
}
if (aAttribute == nsGkAtoms::valign) {
return ParseTableVAlignValue(aValue, aResult);
}
}
return nsGenericHTMLElement::ParseBackgroundAttribute(aNamespaceID,
aAttribute, aValue,
aResult) ||
nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aResult);
}
void
HTMLTableCellElement::MapAttributesIntoRule(const nsMappedAttributes* aAttributes,
GenericSpecifiedValues* aData)
{
if (aData->ShouldComputeStyleStruct(NS_STYLE_INHERIT_BIT(Position))) {
// width: value
if (!aData->PropertyIsSet(eCSSProperty_width)) {
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::width);
if (value && value->Type() == nsAttrValue::eInteger) {
if (value->GetIntegerValue() > 0)
aData->SetPixelValue(eCSSProperty_width, (float)value->GetIntegerValue());
// else 0 implies auto for compatibility.
}
else if (value && value->Type() == nsAttrValue::ePercent) {
if (value->GetPercentValue() > 0.0f)
aData->SetPercentValue(eCSSProperty_width, value->GetPercentValue());
// else 0 implies auto for compatibility
}
}
// height: value
if (!aData->PropertyIsSet(eCSSProperty_height)) {
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::height);
if (value && value->Type() == nsAttrValue::eInteger) {
if (value->GetIntegerValue() > 0)
aData->SetPixelValue(eCSSProperty_height, (float)value->GetIntegerValue());
// else 0 implies auto for compatibility.
}
else if (value && value->Type() == nsAttrValue::ePercent) {
if (value->GetPercentValue() > 0.0f)
aData->SetPercentValue(eCSSProperty_height, value->GetPercentValue());
// else 0 implies auto for compatibility
}
}
}
if (aData->ShouldComputeStyleStruct(NS_STYLE_INHERIT_BIT(Text))) {
if (!aData->PropertyIsSet(eCSSProperty_white_space)) {
// nowrap: enum
if (aAttributes->GetAttr(nsGkAtoms::nowrap)) {
// See if our width is not a nonzero integer width.
const nsAttrValue* value = aAttributes->GetAttr(nsGkAtoms::width);
nsCompatibility mode = aData->PresContext()->CompatibilityMode();
if (!value || value->Type() != nsAttrValue::eInteger ||
value->GetIntegerValue() == 0 ||
eCompatibility_NavQuirks != mode) {
aData->SetKeywordValue(eCSSProperty_white_space, StyleWhiteSpace::Nowrap);
}
}
}
}
nsGenericHTMLElement::MapDivAlignAttributeInto(aAttributes, aData);
nsGenericHTMLElement::MapVAlignAttributeInto(aAttributes, aData);
nsGenericHTMLElement::MapBackgroundAttributesInto(aAttributes, aData);
nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aData);
}
NS_IMETHODIMP_(bool)
HTMLTableCellElement::IsAttributeMapped(const nsIAtom* aAttribute) const
{
static const MappedAttributeEntry attributes[] = {
{ &nsGkAtoms::align },
{ &nsGkAtoms::valign },
{ &nsGkAtoms::nowrap },
#if 0
// XXXldb If these are implemented, they might need to move to
// GetAttributeChangeHint (depending on how, and preferably not).
{ &nsGkAtoms::abbr },
{ &nsGkAtoms::axis },
{ &nsGkAtoms::headers },
{ &nsGkAtoms::scope },
#endif
{ &nsGkAtoms::width },
{ &nsGkAtoms::height },
{ nullptr }
};
static const MappedAttributeEntry* const map[] = {
attributes,
sCommonAttributeMap,
sBackgroundAttributeMap,
};
return FindAttributeDependence(aAttribute, map);
}
nsMapRuleToAttributesFunc
HTMLTableCellElement::GetAttributeMappingFunction() const
{
return &MapAttributesIntoRule;
}
} // namespace dom
} // namespace mozilla