CSSPageRule.h - mozsearch

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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_dom_CSSPageRule_h

#define mozilla_dom_CSSPageRule_h

#include "mozilla/css/GroupRule.h"

#include "mozilla/ServoBindingTypes.h"

#include "nsDOMCSSDeclaration.h"

#include "nsICSSDeclaration.h"

namespace mozilla {

class DeclarationBlock;

namespace dom {

class DocGroup;

class CSSPageRule;

class CSSPageRuleDeclaration 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;

  nsDOMCSSDeclaration::ParsingEnvironment GetParsingEnvironment(

      nsIPrincipal* aSubjectPrincipal) const final;

 private:

  // For accessing the constructor.

  friend class CSSPageRule;

  explicit CSSPageRuleDeclaration(

      already_AddRefed<StyleLockedDeclarationBlock> aDecls);

  void SetRawAfterClone(RefPtr<StyleLockedDeclarationBlock>);

  ~CSSPageRuleDeclaration();

  inline CSSPageRule* Rule();

  inline const CSSPageRule* Rule() const;

  RefPtr<DeclarationBlock> mDecls;

};

class CSSPageRule final : public css::GroupRule {

 public:

  CSSPageRule(RefPtr<StyleLockedPageRule> aRawRule, StyleSheet* aSheet,

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

  NS_DECL_ISUPPORTS_INHERITED

  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(CSSPageRule,

                                                         css::GroupRule)

  bool IsCCLeaf() const final;

  StyleLockedPageRule* Raw() const { return mRawRule; }

  void SetRawAfterClone(RefPtr<StyleLockedPageRule>);

  // WebIDL interfaces

  StyleCssRuleType Type() const final;

  void GetCssText(nsACString& aCssText) const final;

  nsICSSDeclaration* Style();

  void GetSelectorText(nsACString& aSelectorText) const;

  void SetSelectorText(const nsACString& aSelectorText);

  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const final;

  already_AddRefed<StyleLockedCssRules> GetOrCreateRawRules() 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:

  ~CSSPageRule() = default;

  // For computing the offset of mDecls.

  friend class CSSPageRuleDeclaration;

  RefPtr<StyleLockedPageRule> mRawRule;

  CSSPageRuleDeclaration mDecls;

};

CSSPageRule* CSSPageRuleDeclaration::Rule() {

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

                                        offsetof(CSSPageRule, mDecls));

const CSSPageRule* CSSPageRuleDeclaration::Rule() const {

  return reinterpret_cast<const CSSPageRule*>(

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

}  // namespace dom

}  // namespace mozilla

#endif  // mozilla_dom_CSSPageRule_h