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Diffstat (limited to 'layout/style/nsHTMLStyleSheet.h')
| -rw-r--r-- | layout/style/nsHTMLStyleSheet.h | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/layout/style/nsHTMLStyleSheet.h b/layout/style/nsHTMLStyleSheet.h new file mode 100644 index 000000000..a522fc3b4 --- /dev/null +++ b/layout/style/nsHTMLStyleSheet.h @@ -0,0 +1,181 @@ +/* -*- Mode: C++; tab-width: 2; 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/. */ + +/* + * 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 "nsIStyleRule.h" +#include "nsIStyleRuleProcessor.h" +#include "PLDHashTable.h" +#include "mozilla/Attributes.h" +#include "mozilla/MemoryReporting.h" +#include "nsString.h" + +class nsIDocument; +class nsMappedAttributes; + +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); + + // Mapped Attribute management methods + already_AddRefed<nsMappedAttributes> + UniqueMappedAttributes(nsMappedAttributes* aMapped); + void DropMappedAttributes(nsMappedAttributes* aMapped); + + nsIStyleRule* LangRuleFor(const nsString& 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: + HTMLColorRule() {} + + 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, 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(const nsSubstring& 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 + + nsString mLang; + }; + +private: + nsIDocument* mDocument; + RefPtr<HTMLColorRule> mLinkRule; + RefPtr<HTMLColorRule> mVisitedRule; + RefPtr<HTMLColorRule> mActiveRule; + RefPtr<TableQuirkColorRule> mTableQuirkColorRule; + RefPtr<TableTHRule> mTableTHRule; + + PLDHashTable mMappedAttrTable; + PLDHashTable mLangRuleTable; +}; + +#endif /* !defined(nsHTMLStyleSheet_h_) */ |