| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #ifndef StyleResolver_h |
| #define StyleResolver_h |
| |
| #include "core/css/PseudoStyleRequest.h" |
| #include "core/css/RuleFeature.h" |
| #include "core/css/RuleSet.h" |
| #include "core/css/SelectorChecker.h" |
| #include "core/css/SelectorFilter.h" |
| #include "core/css/SiblingTraversalStrategies.h" |
| #include "core/css/TreeBoundaryCrossingRules.h" |
| #include "core/css/resolver/MatchedPropertiesCache.h" |
| #include "core/css/resolver/ScopedStyleResolver.h" |
| #include "core/css/resolver/StyleBuilder.h" |
| #include "core/css/resolver/StyleResourceLoader.h" |
| #include "platform/heap/Handle.h" |
| #include "wtf/Deque.h" |
| #include "wtf/HashMap.h" |
| #include "wtf/HashSet.h" |
| #include "wtf/ListHashSet.h" |
| #include "wtf/RefPtr.h" |
| #include "wtf/Vector.h" |
| |
| namespace blink { |
| |
| class AnimatableValue; |
| class AnimationTimeline; |
| class CSSAnimationUpdate; |
| class CSSFontSelector; |
| class CSSRuleList; |
| class CSSSelector; |
| class CSSStyleSheet; |
| class CSSValue; |
| class ContainerNode; |
| class Document; |
| class Element; |
| class ElementRuleCollector; |
| class Interpolation; |
| class KeyframeList; |
| class KeyframeValue; |
| class MediaQueryEvaluator; |
| class MediaQueryResult; |
| class RuleData; |
| class Settings; |
| class StyleKeyframe; |
| class StylePropertySet; |
| class StyleResolverStats; |
| class StyleRule; |
| class StyleRuleKeyframes; |
| class StyleRulePage; |
| class ViewportStyleResolver; |
| |
| class MatchResult; |
| |
| enum StyleSharingBehavior { |
| AllowStyleSharing, |
| DisallowStyleSharing, |
| }; |
| |
| enum RuleMatchingBehavior { |
| MatchAllRules, |
| MatchAllRulesExcludingSMIL |
| }; |
| |
| const unsigned styleSharingListSize = 15; |
| const unsigned styleSharingMaxDepth = 32; |
| typedef WillBeHeapDeque<RawPtrWillBeMember<Element>, styleSharingListSize> StyleSharingList; |
| |
| struct CSSPropertyValue { |
| STACK_ALLOCATED(); |
| public: |
| CSSPropertyValue(CSSPropertyID property, CSSValue* value) |
| : property(property), value(value) { } |
| // Stores value=propertySet.getPropertyCSSValue(id).get(). |
| CSSPropertyValue(CSSPropertyID, const StylePropertySet&); |
| CSSPropertyID property; |
| RawPtrWillBeMember<CSSValue> value; |
| }; |
| |
| // This class selects a RenderStyle for a given element based on a collection of stylesheets. |
| class StyleResolver FINAL : public NoBaseWillBeGarbageCollectedFinalized<StyleResolver> { |
| WTF_MAKE_NONCOPYABLE(StyleResolver); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED; |
| public: |
| explicit StyleResolver(Document&); |
| virtual ~StyleResolver(); |
| |
| // FIXME: StyleResolver should not be keeping tree-walk state. |
| // These should move to some global tree-walk state, or should be contained in a |
| // TreeWalkContext or similar which is passed in to StyleResolver methods when available. |
| // Using these during tree walk will allow style selector to optimize child and descendant selector lookups. |
| void pushParentElement(Element&); |
| void popParentElement(Element&); |
| |
| PassRefPtr<RenderStyle> styleForElement(Element*, RenderStyle* parentStyle = 0, StyleSharingBehavior = AllowStyleSharing, |
| RuleMatchingBehavior = MatchAllRules); |
| |
| PassRefPtr<RenderStyle> styleForKeyframe(Element*, const RenderStyle&, RenderStyle* parentStyle, const StyleKeyframe*, const AtomicString& animationName); |
| static PassRefPtrWillBeRawPtr<AnimatableValue> createAnimatableValueSnapshot(Element&, CSSPropertyID, CSSValue&); |
| static PassRefPtrWillBeRawPtr<AnimatableValue> createAnimatableValueSnapshot(StyleResolverState&, CSSPropertyID, CSSValue&); |
| |
| PassRefPtr<RenderStyle> pseudoStyleForElement(Element*, const PseudoStyleRequest&, RenderStyle* parentStyle); |
| |
| PassRefPtr<RenderStyle> styleForPage(int pageIndex); |
| PassRefPtr<RenderStyle> defaultStyleForElement(); |
| PassRefPtr<RenderStyle> styleForText(Text*); |
| |
| static PassRefPtr<RenderStyle> styleForDocument(Document&); |
| |
| // FIXME: This only has 5 callers and should be removed. Callers should be explicit about |
| // their dependency on Document* instead of grabbing one through StyleResolver. |
| Document& document() { return *m_document; } |
| |
| // FIXME: It could be better to call appendAuthorStyleSheets() directly after we factor StyleResolver further. |
| // https://bugs.webkit.org/show_bug.cgi?id=108890 |
| void appendAuthorStyleSheets(const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >&); |
| void resetAuthorStyle(TreeScope&); |
| void finishAppendAuthorStyleSheets(); |
| |
| void processScopedRules(const RuleSet& authorRules, CSSStyleSheet*, ContainerNode& scope); |
| |
| void lazyAppendAuthorStyleSheets(unsigned firstNew, const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >&); |
| void removePendingAuthorStyleSheets(const WillBeHeapVector<RefPtrWillBeMember<CSSStyleSheet> >&); |
| void appendPendingAuthorStyleSheets(); |
| bool hasPendingAuthorStyleSheets() const { return m_pendingStyleSheets.size() > 0 || m_needCollectFeatures; } |
| |
| SelectorFilter& selectorFilter() { return m_selectorFilter; } |
| |
| void styleTreeResolveScopedKeyframesRules(const Element*, WillBeHeapVector<RawPtrWillBeMember<ScopedStyleResolver>, 8>&); |
| |
| // These methods will give back the set of rules that matched for a given element (or a pseudo-element). |
| enum CSSRuleFilter { |
| UAAndUserCSSRules = 1 << 1, |
| AuthorCSSRules = 1 << 2, |
| EmptyCSSRules = 1 << 3, |
| CrossOriginCSSRules = 1 << 4, |
| AllButEmptyCSSRules = UAAndUserCSSRules | AuthorCSSRules | CrossOriginCSSRules, |
| AllCSSRules = AllButEmptyCSSRules | EmptyCSSRules, |
| }; |
| PassRefPtrWillBeRawPtr<CSSRuleList> cssRulesForElement(Element*, unsigned rulesToInclude = AllButEmptyCSSRules); |
| PassRefPtrWillBeRawPtr<CSSRuleList> pseudoCSSRulesForElement(Element*, PseudoId, unsigned rulesToInclude = AllButEmptyCSSRules); |
| PassRefPtrWillBeRawPtr<StyleRuleList> styleRulesForElement(Element*, unsigned rulesToInclude); |
| |
| // |properties| is an array with |count| elements. |
| void applyPropertiesToStyle(const CSSPropertyValue* properties, size_t count, RenderStyle*); |
| |
| ViewportStyleResolver* viewportStyleResolver() { return m_viewportStyleResolver.get(); } |
| |
| void addMediaQueryResults(const MediaQueryResultList&); |
| MediaQueryResultList* viewportDependentMediaQueryResults() { return &m_viewportDependentMediaQueryResults; } |
| bool hasViewportDependentMediaQueries() const { return !m_viewportDependentMediaQueryResults.isEmpty(); } |
| bool mediaQueryAffectedByViewportChange() const; |
| |
| // FIXME: Rename to reflect the purpose, like didChangeFontSize or something. |
| void invalidateMatchedPropertiesCache(); |
| |
| void notifyResizeForViewportUnits(); |
| |
| // Exposed for RenderStyle::isStyleAvilable(). |
| static RenderStyle* styleNotYetAvailable() { return s_styleNotYetAvailable; } |
| |
| RuleFeatureSet& ensureUpdatedRuleFeatureSet() |
| { |
| if (hasPendingAuthorStyleSheets()) |
| appendPendingAuthorStyleSheets(); |
| return m_features; |
| } |
| |
| RuleFeatureSet& ruleFeatureSet() |
| { |
| return m_features; |
| } |
| |
| StyleSharingList& styleSharingList(); |
| |
| bool hasRulesForId(const AtomicString&) const; |
| |
| void addToStyleSharingList(Element&); |
| void clearStyleSharingList(); |
| |
| StyleResolverStats* stats() { return m_styleResolverStats.get(); } |
| StyleResolverStats* statsTotals() { return m_styleResolverStatsTotals.get(); } |
| enum StatsReportType { ReportDefaultStats, ReportSlowStats }; |
| void enableStats(StatsReportType = ReportDefaultStats); |
| void disableStats(); |
| void printStats(); |
| |
| unsigned accessCount() const { return m_accessCount; } |
| void didAccess() { ++m_accessCount; } |
| |
| void increaseStyleSharingDepth() { ++m_styleSharingDepth; } |
| void decreaseStyleSharingDepth() { --m_styleSharingDepth; } |
| |
| PassRefPtrWillBeRawPtr<PseudoElement> createPseudoElementIfNeeded(Element& parent, PseudoId); |
| |
| void trace(Visitor*); |
| |
| private: |
| void initWatchedSelectorRules(const WillBeHeapVector<RefPtrWillBeMember<StyleRule> >& watchedSelectors); |
| |
| // FIXME: This should probably go away, folded into FontBuilder. |
| void updateFont(StyleResolverState&); |
| |
| void loadPendingResources(StyleResolverState&); |
| void adjustRenderStyle(StyleResolverState&, Element*); |
| |
| void appendCSSStyleSheet(CSSStyleSheet*); |
| |
| void collectPseudoRulesForElement(Element*, ElementRuleCollector&, PseudoId, unsigned rulesToInclude); |
| void matchUARules(ElementRuleCollector&, RuleSet*); |
| void matchAuthorRules(Element*, ElementRuleCollector&, bool includeEmptyRules); |
| void matchAuthorRulesForShadowHost(Element*, ElementRuleCollector&, bool includeEmptyRules, WillBeHeapVector<RawPtrWillBeMember<ScopedStyleResolver>, 8>& resolvers, WillBeHeapVector<RawPtrWillBeMember<ScopedStyleResolver>, 8>& resolversInShadowTree); |
| void matchAllRules(StyleResolverState&, ElementRuleCollector&, bool includeSMILProperties); |
| void matchUARules(ElementRuleCollector&); |
| // FIXME: watched selectors should be implemented using injected author stylesheets: http://crbug.com/316960 |
| void matchWatchSelectorRules(ElementRuleCollector&); |
| void collectFeatures(); |
| void resetRuleFeatures(); |
| |
| bool fastRejectSelector(const RuleData&) const; |
| |
| void applyMatchedProperties(StyleResolverState&, const MatchResult&); |
| bool applyAnimatedProperties(StyleResolverState&, Element* animatingElement); |
| |
| void resolveScopedStyles(const Element*, WillBeHeapVector<RawPtrWillBeMember<ScopedStyleResolver>, 8>&); |
| void collectScopedResolversForHostedShadowTrees(const Element*, WillBeHeapVector<RawPtrWillBeMember<ScopedStyleResolver>, 8>&); |
| |
| enum StyleApplicationPass { |
| HighPriorityProperties, |
| LowPriorityProperties |
| }; |
| template <StyleResolver::StyleApplicationPass pass> |
| static inline CSSPropertyID firstCSSPropertyId(); |
| template <StyleResolver::StyleApplicationPass pass> |
| static inline CSSPropertyID lastCSSPropertyId(); |
| template <StyleResolver::StyleApplicationPass pass> |
| static inline bool isPropertyForPass(CSSPropertyID); |
| template <StyleApplicationPass pass> |
| void applyMatchedProperties(StyleResolverState&, const MatchResult&, bool important, int startIndex, int endIndex, bool inheritedOnly); |
| template <StyleApplicationPass pass> |
| void applyProperties(StyleResolverState&, const StylePropertySet* properties, StyleRule*, bool isImportant, bool inheritedOnly, PropertyWhitelistType = PropertyWhitelistNone); |
| template <StyleApplicationPass pass> |
| void applyAnimatedProperties(StyleResolverState&, const WillBeHeapHashMap<CSSPropertyID, RefPtrWillBeMember<Interpolation> >&); |
| template <StyleResolver::StyleApplicationPass pass> |
| void applyAllProperty(StyleResolverState&, CSSValue*); |
| |
| void matchPageRules(MatchResult&, RuleSet*, bool isLeftPage, bool isFirstPage, const String& pageName); |
| void matchPageRulesForList(WillBeHeapVector<RawPtrWillBeMember<StyleRulePage> >& matchedRules, const WillBeHeapVector<RawPtrWillBeMember<StyleRulePage> >&, bool isLeftPage, bool isFirstPage, const String& pageName); |
| void collectViewportRules(); |
| |
| bool isLeftPage(int pageIndex) const; |
| bool isRightPage(int pageIndex) const { return !isLeftPage(pageIndex); } |
| bool isFirstPage(int pageIndex) const; |
| String pageName(int pageIndex) const; |
| |
| bool pseudoStyleForElementInternal(Element&, const PseudoStyleRequest&, RenderStyle* parentStyle, StyleResolverState&); |
| |
| // FIXME: This likely belongs on RuleSet. |
| typedef WillBeHeapHashMap<StringImpl*, RefPtrWillBeMember<StyleRuleKeyframes> > KeyframesRuleMap; |
| KeyframesRuleMap m_keyframesRuleMap; |
| |
| static RenderStyle* s_styleNotYetAvailable; |
| |
| void cacheBorderAndBackground(); |
| |
| MatchedPropertiesCache m_matchedPropertiesCache; |
| |
| OwnPtr<MediaQueryEvaluator> m_medium; |
| MediaQueryResultList m_viewportDependentMediaQueryResults; |
| |
| RawPtrWillBeMember<Document> m_document; |
| SelectorFilter m_selectorFilter; |
| |
| OwnPtrWillBeMember<ViewportStyleResolver> m_viewportStyleResolver; |
| |
| WillBeHeapListHashSet<RawPtrWillBeMember<CSSStyleSheet>, 16> m_pendingStyleSheets; |
| |
| // FIXME: The entire logic of collecting features on StyleResolver, as well as transferring them |
| // between various parts of machinery smells wrong. This needs to be better somehow. |
| RuleFeatureSet m_features; |
| OwnPtrWillBeMember<RuleSet> m_siblingRuleSet; |
| OwnPtrWillBeMember<RuleSet> m_uncommonAttributeRuleSet; |
| |
| // FIXME: watched selectors should be implemented using injected author stylesheets: http://crbug.com/316960 |
| OwnPtrWillBeMember<RuleSet> m_watchedSelectorsRules; |
| TreeBoundaryCrossingRules m_treeBoundaryCrossingRules; |
| |
| bool m_needCollectFeatures; |
| bool m_printMediaType; |
| |
| StyleResourceLoader m_styleResourceLoader; |
| |
| unsigned m_styleSharingDepth; |
| WillBeHeapVector<OwnPtrWillBeMember<StyleSharingList>, styleSharingMaxDepth> m_styleSharingLists; |
| |
| OwnPtr<StyleResolverStats> m_styleResolverStats; |
| OwnPtr<StyleResolverStats> m_styleResolverStatsTotals; |
| unsigned m_styleResolverStatsSequence; |
| |
| // Use only for Internals::updateStyleAndReturnAffectedElementCount. |
| unsigned m_accessCount; |
| }; |
| |
| } // namespace blink |
| |
| #endif // StyleResolver_h |