mirror of
				https://github.com/mozilla/gecko-dev.git
				synced 2025-11-04 02:09:05 +02:00 
			
		
		
		
	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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