gecko-dev/layout/style/ServoStyleSheet.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_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 "mozilla/URLExtraData.h"
#include "nsCompatibility.h"
#include "nsStringFwd.h"
namespace mozilla {
class ServoCSSRuleList;
namespace css {
class Loader;
class LoaderReusableStyleSheets;
}
// -------------------------------
// Servo Style Sheet Inner Data Container
//
struct ServoStyleSheetInner final : public StyleSheetInfo
{
ServoStyleSheetInner(CORSMode aCORSMode,
ReferrerPolicy aReferrerPolicy,
const dom::SRIMetadata& aIntegrity,
css::SheetParsingMode aParsingMode);
ServoStyleSheetInner(ServoStyleSheetInner& aCopy,
ServoStyleSheet* aPrimarySheet);
~ServoStyleSheetInner();
StyleSheetInfo* CloneFor(StyleSheet* aPrimarySheet) override;
size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const;
RefPtr<const RawServoStyleSheetContents> mContents;
// XXX StyleSheetInfo already has mSheetURI, mBaseURI, and mPrincipal.
// Can we somehow replace them with URLExtraData directly? The issue
// is currently URLExtraData is immutable, but URIs in StyleSheetInfo
// seems to be mutable, so we probably cannot set them altogether.
// Also, this is mostly a duplicate reference of the same url data
// inside RawServoStyleSheet. We may want to just use that instead.
RefPtr<URLExtraData> mURLData;
};
/**
* CSS style sheet object that is a wrapper for a Servo Stylesheet.
*/
// CID for the ServoStyleSheet class
// a6f31472-ab69-4beb-860f-c221431ead77
#define NS_SERVO_STYLE_SHEET_IMPL_CID \
{ 0xa6f31472, 0xab69, 0x4beb, \
{ 0x86, 0x0f, 0xc2, 0x21, 0x43, 0x1e, 0xad, 0x77 } }
class ServoStyleSheet : public StyleSheet
{
public:
ServoStyleSheet(css::SheetParsingMode aParsingMode,
CORSMode aCORSMode,
net::ReferrerPolicy aReferrerPolicy,
const dom::SRIMetadata& aIntegrity);
already_AddRefed<ServoStyleSheet> CreateEmptyChildSheet(
already_AddRefed<dom::MediaList> aMediaList) const;
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ServoStyleSheet, StyleSheet)
NS_DECLARE_STATIC_IID_ACCESSOR(NS_SERVO_STYLE_SHEET_IMPL_CID)
bool HasRules() const;
MOZ_MUST_USE nsresult
ParseSheet(css::Loader* aLoader,
Span<const uint8_t> aInput,
nsIURI* aSheetURI,
nsIURI* aBaseURI,
nsIPrincipal* aSheetPrincipal,
uint32_t aLineNumber,
nsCompatibility aCompatMode,
css::LoaderReusableStyleSheets* aReusableSheets = nullptr);
nsresult ReparseSheet(const nsAString& aInput);
const RawServoStyleSheetContents* RawContents() const {
return Inner()->mContents;
}
void SetContentsForImport(const RawServoStyleSheetContents* aContents) {
MOZ_ASSERT(!Inner()->mContents);
Inner()->mContents = aContents;
}
URLExtraData* URLData() const { return Inner()->mURLData; }
void DidDirty() override {}
already_AddRefed<StyleSheet> Clone(StyleSheet* aCloneParent,
dom::CSSImportRule* aCloneOwnerRule,
nsIDocument* aCloneDocument,
nsINode* aCloneOwningNode) const final;
// nsICSSLoaderObserver interface
NS_IMETHOD StyleSheetLoaded(StyleSheet* aSheet, bool aWasAlternate,
nsresult aStatus) final;
// Internal GetCssRules method which do not have security check and
// completelness check.
ServoCSSRuleList* GetCssRulesInternal();
// Returns the stylesheet's Servo origin as an OriginFlags value.
OriginFlags GetOrigin();
protected:
virtual ~ServoStyleSheet();
void LastRelease();
ServoStyleSheetInner* Inner() const
{
return static_cast<ServoStyleSheetInner*>(mInner);
}
// Internal methods which do not have security check and completeness check.
uint32_t InsertRuleInternal(const nsAString& aRule,
uint32_t aIndex, ErrorResult& aRv);
void DeleteRuleInternal(uint32_t aIndex, ErrorResult& aRv);
nsresult InsertRuleIntoGroupInternal(const nsAString& aRule,
css::GroupRule* aGroup,
uint32_t aIndex);
void EnabledStateChangedInternal() {}
size_t SizeOfIncludingThis(MallocSizeOf aMallocSizeOf) const override;
private:
ServoStyleSheet(const ServoStyleSheet& aCopy,
ServoStyleSheet* aParentToUse,
dom::CSSImportRule* aOwnerRuleToUse,
nsIDocument* aDocumentToUse,
nsINode* aOwningNodeToUse);
void DropRuleList();
// Take the recently cloned sheets from the `@import` rules, and reparent them
// correctly to `aPrimarySheet`.
void BuildChildListAfterInnerClone();
RefPtr<ServoCSSRuleList> mRuleList;
friend class StyleSheet;
};
NS_DEFINE_STATIC_IID_ACCESSOR(ServoStyleSheet, NS_SERVO_STYLE_SHEET_IMPL_CID)
} // namespace mozilla
#endif // mozilla_ServoStyleSheet_h