gecko-dev/layout/style/nsHTMLStyleSheet.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/. */
/*
* style sheet and style rule processor representing data from presentational
* HTML attributes
*/
#ifndef nsHTMLStyleSheet_h_
#define nsHTMLStyleSheet_h_
#include "nsColor.h"
#include "nsCOMPtr.h"
#include "nsAtom.h"
#include "nsIStyleRule.h"
#include "nsIStyleRuleProcessor.h"
#include "PLDHashTable.h"
#include "mozilla/Attributes.h"
#include "mozilla/MemoryReporting.h"
#include "nsString.h"
class nsIDocument;
class nsMappedAttributes;
struct RawServoDeclarationBlock;
class nsHTMLStyleSheet final : public nsIStyleRuleProcessor
{
public:
explicit nsHTMLStyleSheet(nsIDocument* aDocument);
void SetOwningDocument(nsIDocument* aDocument);
NS_DECL_ISUPPORTS
// nsIStyleRuleProcessor API
virtual void RulesMatching(ElementRuleProcessorData* aData) override;
virtual void RulesMatching(PseudoElementRuleProcessorData* aData) override;
virtual void RulesMatching(AnonBoxRuleProcessorData* aData) override;
#ifdef MOZ_XUL
virtual void RulesMatching(XULTreeRuleProcessorData* aData) override;
#endif
virtual nsRestyleHint HasStateDependentStyle(StateRuleProcessorData* aData) override;
virtual nsRestyleHint HasStateDependentStyle(PseudoElementStateRuleProcessorData* aData) override;
virtual bool HasDocumentStateDependentStyle(StateRuleProcessorData* aData) override;
virtual nsRestyleHint
HasAttributeDependentStyle(AttributeRuleProcessorData* aData,
mozilla::RestyleHintData& aRestyleHintDataResult) override;
virtual bool MediumFeaturesChanged(nsPresContext* aPresContext) override;
virtual size_t SizeOfExcludingThis(mozilla::MallocSizeOf aMallocSizeOf)
const MOZ_MUST_OVERRIDE override;
virtual size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf)
const MOZ_MUST_OVERRIDE override;
size_t DOMSizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
void Reset();
nsresult SetLinkColor(nscolor aColor);
nsresult SetActiveLinkColor(nscolor aColor);
nsresult SetVisitedLinkColor(nscolor aColor);
const RefPtr<RawServoDeclarationBlock>& GetServoUnvisitedLinkDecl() const {
return mServoUnvisitedLinkDecl;
}
const RefPtr<RawServoDeclarationBlock>& GetServoVisitedLinkDecl() const {
return mServoVisitedLinkDecl;
}
const RefPtr<RawServoDeclarationBlock>& GetServoActiveLinkDecl() const {
return mServoActiveLinkDecl;
}
// Mapped Attribute management methods
already_AddRefed<nsMappedAttributes>
UniqueMappedAttributes(nsMappedAttributes* aMapped);
void DropMappedAttributes(nsMappedAttributes* aMapped);
// For each mapped presentation attribute in the cache, resolve
// the attached ServoDeclarationBlock by running the mapping
// and converting the ruledata to Servo specified values.
void CalculateMappedServoDeclarations();
nsIStyleRule* LangRuleFor(const nsAtom* aLanguage);
private:
nsHTMLStyleSheet(const nsHTMLStyleSheet& aCopy) = delete;
nsHTMLStyleSheet& operator=(const nsHTMLStyleSheet& aCopy) = delete;
~nsHTMLStyleSheet() {}
class HTMLColorRule;
friend class HTMLColorRule;
class HTMLColorRule final : public nsIStyleRule {
private:
~HTMLColorRule() {}
public:
explicit HTMLColorRule(nscolor aColor)
: mColor(aColor)
{}
NS_DECL_ISUPPORTS
// nsIStyleRule interface
virtual void MapRuleInfoInto(nsRuleData* aRuleData) override;
virtual bool MightMapInheritedStyleData() override;
virtual bool GetDiscretelyAnimatedCSSValue(nsCSSPropertyID aProperty,
nsCSSValue* aValue) override;
#ifdef DEBUG
virtual void List(FILE* out = stdout, int32_t aIndent = 0) const override;
#endif
nscolor mColor;
};
// Implementation of SetLink/VisitedLink/ActiveLinkColor
nsresult ImplLinkColorSetter(RefPtr<HTMLColorRule>& aRule,
RefPtr<RawServoDeclarationBlock>& aDecl,
nscolor aColor);
class GenericTableRule;
friend class GenericTableRule;
class GenericTableRule : public nsIStyleRule {
protected:
virtual ~GenericTableRule() {}
public:
GenericTableRule() {}
NS_DECL_ISUPPORTS
// nsIStyleRule interface
virtual void MapRuleInfoInto(nsRuleData* aRuleData) override = 0;
virtual bool MightMapInheritedStyleData() override = 0;
virtual bool GetDiscretelyAnimatedCSSValue(nsCSSPropertyID aProperty,
nsCSSValue* aValue) override = 0;
#ifdef DEBUG
virtual void List(FILE* out = stdout, int32_t aIndent = 0) const override;
#endif
};
// this rule handles <th> inheritance
class TableTHRule;
friend class TableTHRule;
class TableTHRule final : public GenericTableRule {
public:
TableTHRule() {}
virtual void MapRuleInfoInto(nsRuleData* aRuleData) override;
virtual bool MightMapInheritedStyleData() override;
virtual bool GetDiscretelyAnimatedCSSValue(nsCSSPropertyID aProperty,
nsCSSValue* aValue) override;
};
// Rule to handle quirk table colors
class TableQuirkColorRule final : public GenericTableRule {
public:
TableQuirkColorRule() {}
virtual void MapRuleInfoInto(nsRuleData* aRuleData) override;
virtual bool MightMapInheritedStyleData() override;
virtual bool GetDiscretelyAnimatedCSSValue(nsCSSPropertyID aProperty,
nsCSSValue* aValue) override;
};
public: // for mLangRuleTable structures only
// Rule to handle xml:lang attributes, of which we have exactly one
// per language string, maintained in mLangRuleTable.
// We also create one extra rule for the "x-math" language string, used on
// <math> elements.
class LangRule final : public nsIStyleRule {
private:
~LangRule() {}
public:
explicit LangRule(nsAtom* aLang) : mLang(aLang) {}
NS_DECL_ISUPPORTS
// nsIStyleRule interface
virtual void MapRuleInfoInto(nsRuleData* aRuleData) override;
virtual bool MightMapInheritedStyleData() override;
virtual bool GetDiscretelyAnimatedCSSValue(nsCSSPropertyID aProperty,
nsCSSValue* aValue) override;
#ifdef DEBUG
virtual void List(FILE* out = stdout, int32_t aIndent = 0) const override;
#endif
RefPtr<nsAtom> mLang;
};
private:
nsIDocument* mDocument;
RefPtr<HTMLColorRule> mLinkRule;
RefPtr<HTMLColorRule> mVisitedRule;
RefPtr<HTMLColorRule> mActiveRule;
RefPtr<RawServoDeclarationBlock> mServoUnvisitedLinkDecl;
RefPtr<RawServoDeclarationBlock> mServoVisitedLinkDecl;
RefPtr<RawServoDeclarationBlock> mServoActiveLinkDecl;
RefPtr<TableQuirkColorRule> mTableQuirkColorRule;
RefPtr<TableTHRule> mTableTHRule;
PLDHashTable mMappedAttrTable;
// Whether or not the mapped attributes table
// has been changed since the last call to
// CalculateMappedServoDeclarations()
bool mMappedAttrsDirty;
PLDHashTable mLangRuleTable;
};
#endif /* !defined(nsHTMLStyleSheet_h_) */