gecko-dev/dom/html/HTMLHeadingElement.cpp
Emilio Cobos Álvarez 7bddcf9e5a Bug 1839223 - Remove nsMappedAttributes. r=smaug
Instead, lazily schedule evaluation of them before styling, much like we
were doing for SVG.

A subtle tweak is that we only remain scheduled while in the document.
This allows us to use the "in document" bit plus the "mapped attributes
dirty" bit to know our scheduled status. It also prevents doing silly
work for disconnected elements, and having to do hashmap lookups on
adoption and node destruction.

Differential Revision: https://phabricator.services.mozilla.com/D181549
2023-06-22 17:22:03 +00:00

59 lines
2.1 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/HTMLHeadingElement.h"
#include "mozilla/dom/HTMLHeadingElementBinding.h"
#include "mozilla/MappedDeclarationsBuilder.h"
#include "nsGkAtoms.h"
NS_IMPL_NS_NEW_HTML_ELEMENT(Heading)
namespace mozilla::dom {
HTMLHeadingElement::~HTMLHeadingElement() = default;
NS_IMPL_ELEMENT_CLONE(HTMLHeadingElement)
JSObject* HTMLHeadingElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return HTMLHeadingElement_Binding::Wrap(aCx, this, aGivenProto);
}
bool HTMLHeadingElement::ParseAttribute(int32_t aNamespaceID,
nsAtom* aAttribute,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
nsAttrValue& aResult) {
if (aAttribute == nsGkAtoms::align && aNamespaceID == kNameSpaceID_None) {
return ParseDivAlignValue(aValue, aResult);
}
return nsGenericHTMLElement::ParseAttribute(aNamespaceID, aAttribute, aValue,
aMaybeScriptedPrincipal, aResult);
}
void HTMLHeadingElement::MapAttributesIntoRule(
MappedDeclarationsBuilder& aBuilder) {
nsGenericHTMLElement::MapDivAlignAttributeInto(aBuilder);
nsGenericHTMLElement::MapCommonAttributesInto(aBuilder);
}
NS_IMETHODIMP_(bool)
HTMLHeadingElement::IsAttributeMapped(const nsAtom* aAttribute) const {
static const MappedAttributeEntry* const map[] = {sDivAlignAttributeMap,
sCommonAttributeMap};
return FindAttributeDependence(aAttribute, map);
}
nsMapRuleToAttributesFunc HTMLHeadingElement::GetAttributeMappingFunction()
const {
return &MapAttributesIntoRule;
}
} // namespace mozilla::dom