palemoon-dev/platform/layout/style/ServoStyleSheet.h

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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_ServoStyleSheet_h
#define mozilla_ServoStyleSheet_h

#include "mozilla/dom/SRIMetadata.h"
#include "mozilla/RefPtr.h"
#include "mozilla/ServoBindingTypes.h"
#include "mozilla/StyleSheet.h"
#include "mozilla/StyleSheetInfo.h"
#include "nsStringFwd.h"

namespace mozilla {

/**
 * CSS style sheet object that is a wrapper for a Servo Stylesheet.
 */
class ServoStyleSheet : public StyleSheet
{
public:
  ServoStyleSheet(css::SheetParsingMode aParsingMode,
                  CORSMode aCORSMode,
                  net::ReferrerPolicy aReferrerPolicy,
                  const dom::SRIMetadata& aIntegrity);

  bool HasRules() const;

  void SetAssociatedDocument(nsIDocument* aDocument,
                             DocumentAssociationMode aAssociationMode);

  ServoStyleSheet* GetParentSheet() const;
  void AppendStyleSheet(ServoStyleSheet* aSheet);

  MOZ_MUST_USE nsresult ParseSheet(const nsAString& aInput,
                                   nsIURI* aSheetURI,
                                   nsIURI* aBaseURI,
                                   nsIPrincipal* aSheetPrincipal,
                                   uint32_t aLineNumber);

  /**
   * Called instead of ParseSheet to initialize the Servo stylesheet object
   * for a failed load. Either ParseSheet or LoadFailed must be called before
   * adding a ServoStyleSheet to a ServoStyleSet.
   */
  void LoadFailed();

  size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const;

#ifdef DEBUG
  void List(FILE* aOut = stdout, int32_t aIndex = 0) const;
#endif

  RawServoStyleSheet* RawSheet() const { return mSheet; }

  // WebIDL StyleSheet API
  nsMediaList* Media() final;

  // WebIDL CSSStyleSheet API
  // Can't be inline because we can't include ImportRule here.  And can't be
  // called GetOwnerRule because that would be ambiguous with the ImportRule
  // version.
  nsIDOMCSSRule* GetDOMOwnerRule() const final;

  void WillDirty() {}
  void DidDirty() {}

protected:
  virtual ~ServoStyleSheet();

  // Internal methods which do not have security check and completeness check.
  dom::CSSRuleList* GetCssRulesInternal(ErrorResult& aRv);
  uint32_t InsertRuleInternal(const nsAString& aRule,
                              uint32_t aIndex, ErrorResult& aRv);
  void DeleteRuleInternal(uint32_t aIndex, ErrorResult& aRv);

private:
  void DropSheet();

  RefPtr<RawServoStyleSheet> mSheet;
  StyleSheetInfo mSheetInfo;

  friend class StyleSheet;
};

} // namespace mozilla

#endif // mozilla_ServoStyleSheet_h