CSSMarginRule.h - mozsearch

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=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_dom_CSSMarginRule_h

#define mozilla_dom_CSSMarginRule_h

#include "mozilla/css/Rule.h"

#include "mozilla/ServoBindingTypes.h"

#include "nsDOMCSSDeclaration.h"

#include "nsICSSDeclaration.h"

namespace mozilla {

class DeclarationBlock;

namespace dom {

class CSSMarginRule;

class CSSMarginRuleDeclaration final : public nsDOMCSSDeclaration {

 public:

  NS_DECL_ISUPPORTS_INHERITED

  css::Rule* GetParentRule() final;

  nsINode* GetAssociatedNode() const final;

  nsISupports* GetParentObject() const final;

 protected:

  DeclarationBlock* GetOrCreateCSSDeclaration(

      Operation aOperation, DeclarationBlock** aCreated) final;

  nsresult SetCSSDeclaration(DeclarationBlock* aDecl,

                             MutationClosureData* aClosureData) final;

  Document* DocToUpdate() final { return nullptr; }

  nsDOMCSSDeclaration::ParsingEnvironment GetParsingEnvironment(

      nsIPrincipal* aSubjectPrincipal) const final;

 private:

  // For accessing the constructor.

  friend class CSSMarginRule;

  explicit CSSMarginRuleDeclaration(

      already_AddRefed<StyleLockedDeclarationBlock> aDecls);

  void SetRawAfterClone(RefPtr<StyleLockedDeclarationBlock>);

  ~CSSMarginRuleDeclaration();

  inline CSSMarginRule* Rule();

  inline const CSSMarginRule* Rule() const;

  RefPtr<DeclarationBlock> mDecls;

};

class CSSMarginRule final : public css::Rule {

 public:

  CSSMarginRule(RefPtr<StyleMarginRule> aRawRule, StyleSheet* aSheet,

                css::Rule* aParentRule, uint32_t aLine, uint32_t aColumn);

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(CSSMarginRule,

                                                         css::Rule)

  bool IsCCLeaf() const final;

  StyleMarginRule* Raw() const { return mRawRule; }

  void SetRawAfterClone(RefPtr<StyleMarginRule>);

  // WebIDL interfaces

  StyleCssRuleType Type() const final;

  void GetCssText(nsACString& aCssText) const final;

  nsICSSDeclaration* Style() { return &mDecls; }

  void GetName(nsACString& aRuleName) const;

  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const final;

#ifdef DEBUG

  void List(FILE* out = stdout, int32_t aIndent = 0) const final;

#endif

  JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) final;

 private:

  ~CSSMarginRule() = default;

  // For computing the offset of mDecls.

  friend class CSSMarginRuleDeclaration;

  RefPtr<StyleMarginRule> mRawRule;

  CSSMarginRuleDeclaration mDecls;

};

CSSMarginRule* CSSMarginRuleDeclaration::Rule() {

  return reinterpret_cast<CSSMarginRule*>(reinterpret_cast<uint8_t*>(this) -

                                          offsetof(CSSMarginRule, mDecls));

const CSSMarginRule* CSSMarginRuleDeclaration::Rule() const {

  return reinterpret_cast<const CSSMarginRule*>(

      reinterpret_cast<const uint8_t*>(this) - offsetof(CSSMarginRule, mDecls));

}  // namespace dom

}  // namespace mozilla

#endif  // mozilla_dom_CSSMarginRule_h