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-rw-r--r--layout/style/CSSStyleRule.h118
1 files changed, 118 insertions, 0 deletions
diff --git a/layout/style/CSSStyleRule.h b/layout/style/CSSStyleRule.h
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+/* -*- 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/. */
+
+#ifndef mozilla_CSSStyleRule_h
+#define mozilla_CSSStyleRule_h
+
+#include "mozilla/BindingStyleRule.h"
+#include "mozilla/ServoBindingTypes.h"
+#include "mozilla/WeakPtr.h"
+
+#include "nsDOMCSSDeclaration.h"
+
+namespace mozilla {
+
+class DeclarationBlock;
+
+namespace dom {
+class DocGroup;
+class CSSStyleRule;
+
+class CSSStyleRuleDeclaration final : public nsDOMCSSDeclaration {
+ public:
+ NS_DECL_ISUPPORTS_INHERITED
+
+ css::Rule* GetParentRule() final;
+ nsINode* GetAssociatedNode() const final;
+ nsISupports* GetParentObject() const final;
+
+ protected:
+ mozilla::DeclarationBlock* GetOrCreateCSSDeclaration(
+ Operation aOperation, mozilla::DeclarationBlock** aCreated) final;
+ nsresult SetCSSDeclaration(DeclarationBlock* aDecl,
+ MutationClosureData* aClosureData) final;
+ Document* DocToUpdate() final;
+ ParsingEnvironment GetParsingEnvironment(
+ nsIPrincipal* aSubjectPrincipal) const final;
+
+ private:
+ // For accessing the constructor.
+ friend class CSSStyleRule;
+
+ explicit CSSStyleRuleDeclaration(
+ already_AddRefed<StyleLockedDeclarationBlock> aDecls);
+ ~CSSStyleRuleDeclaration();
+
+ inline CSSStyleRule* Rule();
+ inline const CSSStyleRule* Rule() const;
+
+ void SetRawAfterClone(RefPtr<StyleLockedDeclarationBlock>);
+
+ RefPtr<DeclarationBlock> mDecls;
+};
+
+class CSSStyleRule final : public BindingStyleRule, public SupportsWeakPtr {
+ public:
+ CSSStyleRule(already_AddRefed<StyleLockedStyleRule> aRawRule,
+ StyleSheet* aSheet, css::Rule* aParentRule, uint32_t aLine,
+ uint32_t aColumn);
+
+ NS_DECL_ISUPPORTS_INHERITED
+ NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(CSSStyleRule,
+ css::Rule)
+ bool IsCCLeaf() const final MOZ_MUST_OVERRIDE;
+
+ uint32_t GetSelectorCount() override;
+ nsresult GetSelectorText(uint32_t aSelectorIndex, nsACString& aText) override;
+ nsresult GetSpecificity(uint32_t aSelectorIndex,
+ uint64_t* aSpecificity) override;
+ nsresult SelectorMatchesElement(dom::Element* aElement,
+ uint32_t aSelectorIndex,
+ const nsAString& aPseudo,
+ bool aRelevantLinkVisited,
+ bool* aMatches) override;
+ NotNull<DeclarationBlock*> GetDeclarationBlock() const override;
+
+ // WebIDL interface
+ StyleCssRuleType Type() const final;
+ void GetCssText(nsACString& aCssText) const final;
+ void GetSelectorText(nsACString& aSelectorText) final;
+ void SetSelectorText(const nsACString& aSelectorText) final;
+ nsICSSDeclaration* Style() final;
+
+ StyleLockedStyleRule* Raw() const { return mRawRule; }
+ void SetRawAfterClone(RefPtr<StyleLockedStyleRule>);
+
+ // Methods of mozilla::css::Rule
+ size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const final;
+#ifdef DEBUG
+ void List(FILE* out = stdout, int32_t aIndent = 0) const final;
+#endif
+
+ private:
+ ~CSSStyleRule() = default;
+
+ // For computing the offset of mDecls.
+ friend class CSSStyleRuleDeclaration;
+
+ RefPtr<StyleLockedStyleRule> mRawRule;
+ CSSStyleRuleDeclaration mDecls;
+};
+
+CSSStyleRule* CSSStyleRuleDeclaration::Rule() {
+ return reinterpret_cast<CSSStyleRule*>(reinterpret_cast<uint8_t*>(this) -
+ offsetof(CSSStyleRule, mDecls));
+}
+
+const CSSStyleRule* CSSStyleRuleDeclaration::Rule() const {
+ return reinterpret_cast<const CSSStyleRule*>(
+ reinterpret_cast<const uint8_t*>(this) - offsetof(CSSStyleRule, mDecls));
+}
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_CSSStyleRule_h