forked from mirrors/gecko-dev
7bddcf9e5a
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
112 lines
3.9 KiB
C++
112 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_MathMLElement_h_
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#define mozilla_dom_MathMLElement_h_
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#include "mozilla/Attributes.h"
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#include "nsStyledElement.h"
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#include "Link.h"
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class nsCSSValue;
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namespace mozilla {
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class EventChainPostVisitor;
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class EventChainPreVisitor;
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namespace dom {
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using MathMLElementBase = nsStyledElement;
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/*
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* The base class for MathML elements.
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*/
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class MathMLElement final : public MathMLElementBase, public Link {
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public:
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explicit MathMLElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
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explicit MathMLElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
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// Implementation of nsISupports is inherited from MathMLElementBase
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NS_DECL_ISUPPORTS_INHERITED
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NS_IMPL_FROMNODE(MathMLElement, kNameSpaceID_MathML)
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nsresult BindToTree(BindContext&, nsINode& aParent) override;
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void UnbindFromTree(bool aNullParent = true) override;
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bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
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const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult) override;
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NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* aAttribute) const override;
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nsMapRuleToAttributesFunc GetAttributeMappingFunction() const override;
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enum {
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PARSE_ALLOW_NEGATIVE = 0x02,
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PARSE_SUPPRESS_WARNINGS = 0x04,
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};
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static bool ParseNamedSpaceValue(const nsString& aString,
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nsCSSValue& aCSSValue, uint32_t aFlags,
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const Document& aDocument);
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static bool ParseNumericValue(const nsString& aString, nsCSSValue& aCSSValue,
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uint32_t aFlags, Document* aDocument);
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static void MapGlobalMathMLAttributesInto(
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mozilla::MappedDeclarationsBuilder&);
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static void MapMTableAttributesInto(mozilla::MappedDeclarationsBuilder&);
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void GetEventTargetParent(mozilla::EventChainPreVisitor& aVisitor) override;
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MOZ_CAN_RUN_SCRIPT
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nsresult PostHandleEvent(mozilla::EventChainPostVisitor& aVisitor) override;
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nsresult Clone(mozilla::dom::NodeInfo*, nsINode** aResult) const override;
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mozilla::dom::ElementState IntrinsicState() const override;
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// Set during reflow as necessary. Does a style change notification,
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// aNotify must be true.
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void SetIncrementScriptLevel(bool aIncrementScriptLevel, bool aNotify);
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bool GetIncrementScriptLevel() const { return mIncrementScriptLevel; }
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int32_t TabIndexDefault() final;
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bool IsFocusableInternal(int32_t* aTabIndex, bool aWithMouse) override;
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already_AddRefed<nsIURI> GetHrefURI() const override;
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void NodeInfoChanged(Document* aOldDoc) override {
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ClearHasPendingLinkUpdate();
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MathMLElementBase::NodeInfoChanged(aOldDoc);
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}
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bool IsEventAttributeNameInternal(nsAtom* aName) final;
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bool Autofocus() const { return GetBoolAttr(nsGkAtoms::autofocus); }
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void SetAutofocus(bool aAutofocus, ErrorResult& aRv) {
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if (aAutofocus) {
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SetAttr(nsGkAtoms::autofocus, u""_ns, aRv);
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} else {
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UnsetAttr(nsGkAtoms::autofocus, aRv);
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}
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}
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protected:
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virtual ~MathMLElement() = default;
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JSObject* WrapNode(JSContext*, JS::Handle<JSObject*> aGivenProto) override;
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void BeforeSetAttr(int32_t aNamespaceID, nsAtom* aName,
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const nsAttrValue* aValue, bool aNotify) final;
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void AfterSetAttr(int32_t aNameSpaceID, nsAtom* aName,
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const nsAttrValue* aValue, const nsAttrValue* aOldValue,
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nsIPrincipal* aSubjectPrincipal, bool aNotify) override;
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private:
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bool mIncrementScriptLevel;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_MathMLElement_h_
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