| /* |
| * 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/CoreExport.h" |
| #include "core/animation/PropertyHandle.h" |
| #include "core/css/ElementRuleCollector.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/resolver/CSSPropertyPriority.h" |
| #include "core/css/resolver/MatchedPropertiesCache.h" |
| #include "core/css/resolver/StyleBuilder.h" |
| #include "core/dom/DocumentOrderedList.h" |
| #include "core/style/CachedUAStyle.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 CSSRuleList; |
| class CSSStyleSheet; |
| class CSSValue; |
| class ContainerNode; |
| class Document; |
| class Element; |
| class Interpolation; |
| class MatchResult; |
| class MediaQueryEvaluator; |
| class ScopedStyleResolver; |
| class StylePropertySet; |
| class StyleRule; |
| class ViewportStyleResolver; |
| |
| enum StyleSharingBehavior { |
| AllowStyleSharing, |
| DisallowStyleSharing, |
| }; |
| |
| enum RuleMatchingBehavior { |
| MatchAllRules, |
| MatchAllRulesExcludingSMIL |
| }; |
| |
| const unsigned styleSharingListSize = 15; |
| const unsigned styleSharingMaxDepth = 32; |
| using StyleSharingList = WillBeHeapDeque<RawPtrWillBeMember<Element>, styleSharingListSize>; |
| using ActiveInterpolationsMap = HashMap<PropertyHandle, Vector<RefPtr<Interpolation>, 1>>; |
| |
| // This class selects a ComputedStyle for a given element based on a collection of stylesheets. |
| class CORE_EXPORT StyleResolver final : public NoBaseWillBeGarbageCollectedFinalized<StyleResolver> { |
| WTF_MAKE_NONCOPYABLE(StyleResolver); USING_FAST_MALLOC_WILL_BE_REMOVED(StyleResolver); |
| public: |
| static PassOwnPtrWillBeRawPtr<StyleResolver> create(Document& document) |
| { |
| return adoptPtrWillBeNoop(new StyleResolver(document)); |
| } |
| ~StyleResolver(); |
| void dispose(); |
| |
| PassRefPtr<ComputedStyle> styleForElement(Element*, const ComputedStyle* parentStyle = 0, StyleSharingBehavior = AllowStyleSharing, |
| RuleMatchingBehavior = MatchAllRules); |
| |
| static PassRefPtr<AnimatableValue> createAnimatableValueSnapshot(Element&, const ComputedStyle* baseStyle, CSSPropertyID, CSSValue*); |
| static PassRefPtr<AnimatableValue> createAnimatableValueSnapshot(StyleResolverState&, CSSPropertyID, CSSValue*); |
| |
| PassRefPtr<ComputedStyle> pseudoStyleForElement(Element*, const PseudoStyleRequest&, const ComputedStyle* parentStyle); |
| |
| PassRefPtr<ComputedStyle> styleForPage(int pageIndex); |
| PassRefPtr<ComputedStyle> styleForText(Text*); |
| |
| static PassRefPtr<ComputedStyle> styleForDocument(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 resetRuleFeatures(); |
| void finishAppendAuthorStyleSheets(); |
| |
| 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; } |
| |
| // TODO(esprehn): StyleResolver should probably not contain tree walking |
| // state, instead we should pass a context object during recalcStyle. |
| SelectorFilter& selectorFilter() { return m_selectorFilter; } |
| |
| StyleRuleKeyframes* findKeyframesRule(const Element*, const AtomicString& animationName); |
| |
| // 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); |
| |
| void computeFont(ComputedStyle*, const StylePropertySet&); |
| |
| ViewportStyleResolver* viewportStyleResolver() { return m_viewportStyleResolver.get(); } |
| |
| void addViewportDependentMediaQueries(const MediaQueryResultList&); |
| bool hasViewportDependentMediaQueries() const { return !m_viewportDependentMediaQueryResults.isEmpty(); } |
| bool mediaQueryAffectedByViewportChange() const; |
| void addDeviceDependentMediaQueries(const MediaQueryResultList&); |
| bool mediaQueryAffectedByDeviceChange() const; |
| |
| // FIXME: Rename to reflect the purpose, like didChangeFontSize or something. |
| void invalidateMatchedPropertiesCache(); |
| |
| void notifyResizeForViewportUnits(); |
| |
| // Exposed for ComputedStyle::isStyleAvilable(). |
| static ComputedStyle* 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(); |
| |
| void increaseStyleSharingDepth() { ++m_styleSharingDepth; } |
| void decreaseStyleSharingDepth() { --m_styleSharingDepth; } |
| |
| PassRefPtrWillBeRawPtr<PseudoElement> createPseudoElementIfNeeded(Element& parent, PseudoId); |
| |
| DECLARE_TRACE(); |
| |
| void addTreeBoundaryCrossingScope(ContainerNode& scope); |
| void initWatchedSelectorRules(); |
| |
| private: |
| explicit StyleResolver(Document&); |
| |
| PassRefPtr<ComputedStyle> initialStyleForElement(); |
| |
| // FIXME: This should probably go away, folded into FontBuilder. |
| void updateFont(StyleResolverState&); |
| |
| void loadPendingResources(StyleResolverState&); |
| void adjustComputedStyle(StyleResolverState&, Element*); |
| |
| void appendCSSStyleSheet(CSSStyleSheet&); |
| |
| void collectPseudoRulesForElement(const Element&, ElementRuleCollector&, PseudoId, unsigned rulesToInclude); |
| void matchRuleSet(ElementRuleCollector&, RuleSet*); |
| void matchUARules(ElementRuleCollector&); |
| void matchAuthorRules(const Element&, ElementRuleCollector&); |
| void matchAllRules(StyleResolverState&, ElementRuleCollector&, bool includeSMILProperties); |
| void collectFeatures(); |
| void collectTreeBoundaryCrossingRules(const Element&, ElementRuleCollector&); |
| |
| void applyMatchedProperties(StyleResolverState&, const MatchResult&); |
| bool applyAnimatedProperties(StyleResolverState&, const Element* animatingElement); |
| void applyCallbackSelectors(StyleResolverState&); |
| |
| template <CSSPropertyPriority priority> |
| void applyMatchedProperties(StyleResolverState&, const MatchedPropertiesRange&, bool important, bool inheritedOnly); |
| template <CSSPropertyPriority priority> |
| void applyProperties(StyleResolverState&, const StylePropertySet* properties, bool isImportant, bool inheritedOnly, PropertyWhitelistType = PropertyWhitelistNone); |
| template <CSSPropertyPriority priority> |
| void applyAnimatedProperties(StyleResolverState&, const ActiveInterpolationsMap&); |
| template <CSSPropertyPriority priority> |
| void applyAllProperty(StyleResolverState&, CSSValue*, bool inheritedOnly, PropertyWhitelistType); |
| template <CSSPropertyPriority priority> |
| void applyPropertiesForApplyAtRule(StyleResolverState&, const CSSValue*, bool isImportant, bool inheritedOnly, PropertyWhitelistType); |
| |
| bool pseudoStyleForElementInternal(Element&, const PseudoStyleRequest&, const ComputedStyle* parentStyle, StyleResolverState&); |
| bool hasAuthorBackground(const StyleResolverState&); |
| bool hasAuthorBorder(const StyleResolverState&); |
| |
| PassRefPtrWillBeRawPtr<PseudoElement> createPseudoElement(Element* parent, PseudoId); |
| |
| Document& document() { return *m_document; } |
| |
| static ComputedStyle* s_styleNotYetAvailable; |
| |
| MatchedPropertiesCache m_matchedPropertiesCache; |
| |
| OwnPtrWillBeMember<MediaQueryEvaluator> m_medium; |
| MediaQueryResultList m_viewportDependentMediaQueryResults; |
| MediaQueryResultList m_deviceDependentMediaQueryResults; |
| |
| 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; |
| OwnPtrWillBeMember<RuleSet> m_watchedSelectorsRules; |
| |
| DocumentOrderedList m_treeBoundaryCrossingScopes; |
| |
| bool m_needCollectFeatures; |
| bool m_printMediaType; |
| |
| unsigned m_styleSharingDepth; |
| WillBeHeapVector<OwnPtrWillBeMember<StyleSharingList>, styleSharingMaxDepth> m_styleSharingLists; |
| }; |
| |
| } // namespace blink |
| |
| #endif // StyleResolver_h |