forked from mirrors/gecko-dev
597b7bc37d
The specifics of how this is going to work are still getting spec'd / discussed in https://github.com/w3c/csswg-drafts/issues/6576, but this allows DevTools to work fine and the feature to be complete enough for Nightly experimentation (with the other in-flight patches). Otherwise devtools crashes when trying to inspect pages that use them. Differential Revision: https://phabricator.services.mozilla.com/D124656
117 lines
3.8 KiB
C++
117 lines
3.8 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_CSSStyleRule_h
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#define mozilla_CSSStyleRule_h
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#include "mozilla/BindingStyleRule.h"
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#include "mozilla/ServoBindingTypes.h"
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#include "mozilla/WeakPtr.h"
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#include "nsDOMCSSDeclaration.h"
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namespace mozilla {
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class DeclarationBlock;
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namespace dom {
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class DocGroup;
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class CSSStyleRule;
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class CSSStyleRuleDeclaration final : public nsDOMCSSDeclaration {
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public:
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NS_DECL_ISUPPORTS_INHERITED
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css::Rule* GetParentRule() final;
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nsINode* GetAssociatedNode() const final;
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nsISupports* GetParentObject() const final;
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protected:
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mozilla::DeclarationBlock* GetOrCreateCSSDeclaration(
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Operation aOperation, mozilla::DeclarationBlock** aCreated) final;
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nsresult SetCSSDeclaration(DeclarationBlock* aDecl,
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MutationClosureData* aClosureData) final;
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Document* DocToUpdate() final;
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ParsingEnvironment GetParsingEnvironment(
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nsIPrincipal* aSubjectPrincipal) const final;
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private:
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// For accessing the constructor.
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friend class CSSStyleRule;
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explicit CSSStyleRuleDeclaration(
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already_AddRefed<RawServoDeclarationBlock> aDecls);
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~CSSStyleRuleDeclaration();
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inline CSSStyleRule* Rule();
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inline const CSSStyleRule* Rule() const;
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void SetRawAfterClone(RefPtr<RawServoDeclarationBlock>);
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RefPtr<DeclarationBlock> mDecls;
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};
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class CSSStyleRule final : public BindingStyleRule, public SupportsWeakPtr {
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public:
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CSSStyleRule(already_AddRefed<RawServoStyleRule> aRawRule, StyleSheet* aSheet,
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css::Rule* aParentRule, uint32_t aLine, uint32_t aColumn);
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(CSSStyleRule,
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css::Rule)
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bool IsCCLeaf() const final MOZ_MUST_OVERRIDE;
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uint32_t GetSelectorCount() override;
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nsresult GetSelectorText(uint32_t aSelectorIndex, nsACString& aText) override;
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nsresult GetSpecificity(uint32_t aSelectorIndex,
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uint64_t* aSpecificity) override;
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nsresult SelectorMatchesElement(dom::Element* aElement,
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uint32_t aSelectorIndex,
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const nsAString& aPseudo,
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bool aRelevantLinkVisited,
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bool* aMatches) override;
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NotNull<DeclarationBlock*> GetDeclarationBlock() const override;
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// WebIDL interface
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StyleCssRuleType Type() const final;
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void GetCssText(nsACString& aCssText) const final;
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void GetSelectorText(nsACString& aSelectorText) final;
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void SetSelectorText(const nsACString& aSelectorText) final;
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nsICSSDeclaration* Style() final;
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RawServoStyleRule* Raw() const { return mRawRule; }
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void SetRawAfterClone(RefPtr<RawServoStyleRule>);
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// Methods of mozilla::css::Rule
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size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const final;
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#ifdef DEBUG
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void List(FILE* out = stdout, int32_t aIndent = 0) const final;
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#endif
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private:
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~CSSStyleRule() = default;
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// For computing the offset of mDecls.
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friend class CSSStyleRuleDeclaration;
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RefPtr<RawServoStyleRule> mRawRule;
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CSSStyleRuleDeclaration mDecls;
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};
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CSSStyleRule* CSSStyleRuleDeclaration::Rule() {
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return reinterpret_cast<CSSStyleRule*>(reinterpret_cast<uint8_t*>(this) -
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offsetof(CSSStyleRule, mDecls));
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}
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const CSSStyleRule* CSSStyleRuleDeclaration::Rule() const {
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return reinterpret_cast<const CSSStyleRule*>(
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reinterpret_cast<const uint8_t*>(this) - offsetof(CSSStyleRule, mDecls));
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}
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_CSSStyleRule_h
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