Setup parent stylesheet for tree boundary crossing rules.

Source/core/css/resolver/StyleResolver.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2004-2005 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2006, 2007 Nicholas Shanks (webkit@nickshanks.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007 Alexey Proskuryakov <ap@webkit.org>
  * Copyright (C) 2007, 2008 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (c) 2011, Code Aurora Forum. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
@@ skipping 228 matching lines @@
 
 void StyleResolver::resetRuleFeatures()
 {
     // Need to recreate RuleFeatureSet.
     m_features.clear();
     m_siblingRuleSet.clear();
     m_uncommonAttributeRuleSet.clear();
     m_needCollectFeatures = true;
 }
 
-void StyleResolver::addTreeBoundaryCrossingRules(const WillBeHeapVector<MinimalRuleData>& rules, ContainerNode* scope)
+void StyleResolver::addTreeBoundaryCrossingRules(const WillBeHeapVector<MinimalRuleData>& rules, ContainerNode* scope, CSSStyleSheet* parentStyleSheet)
 {
     for (unsigned i = 0; i < rules.size(); ++i) {
         const MinimalRuleData& info = rules[i];
-        m_treeBoundaryCrossingRules.addRule(info.m_rule, info.m_selectorIndex, scope, info.m_flags);
+        m_treeBoundaryCrossingRules.addRule(info.m_rule, info.m_selectorIndex, scope, parentStyleSheet, info.m_flags);
     }
 }
 
-void StyleResolver::processScopedRules(const RuleSet& authorRules, const KURL& sheetBaseURL, ContainerNode* scope)
+void StyleResolver::processScopedRules(const RuleSet& authorRules, CSSStyleSheet* parentStyleSheet, ContainerNode* scope)
 {
     const WillBeHeapVector<RawPtrWillBeMember<StyleRuleKeyframes> > keyframesRules = authorRules.keyframesRules();
     for (unsigned i = 0; i < keyframesRules.size(); ++i)
         ensureScopedStyleResolver(scope)->addKeyframeStyle(keyframesRules[i]);
 
-    addTreeBoundaryCrossingRules(authorRules.treeBoundaryCrossingRules(), scope);
+    addTreeBoundaryCrossingRules(authorRules.treeBoundaryCrossingRules(), scope, parentStyleSheet);
 
     // FIXME(BUG 72461): We don't add @font-face rules of scoped style sheets for the moment.
     if (!scope || scope->isDocumentNode()) {
         const WillBeHeapVector<RawPtrWillBeMember<StyleRuleFontFace> > fontFaceRules = authorRules.fontFaceRules();
         for (unsigned i = 0; i < fontFaceRules.size(); ++i)
             addFontFaceRule(&m_document, document().styleEngine()->fontSelector(), fontFaceRules[i]);
         if (fontFaceRules.size())
             invalidateMatchedPropertiesCache();
     } else {
-        addTreeBoundaryCrossingRules(authorRules.shadowDistributedRules(), scope);
+        addTreeBoundaryCrossingRules(authorRules.shadowDistributedRules(), scope, parentStyleSheet);
     }
 }
 
 void StyleResolver::resetAuthorStyle(const ContainerNode* scopingNode)
 {
     // FIXME: When chanking scoped attribute, scopingNode's hasScopedHTMLStyleChild has been already modified.
     // So we cannot use hasScopedHTMLStyleChild flag here.
     ScopedStyleResolver* resolver = scopingNode ? m_styleTree.lookupScopedStyleResolverFor(scopingNode) : m_styleTree.scopedStyleResolverForDocument();
     if (!resolver)
         return;
 
-    treeBoundaryCrossingRules().reset(scopingNode);
+    m_treeBoundaryCrossingRules.reset(scopingNode);
 
     resolver->resetAuthorStyle();
     resetRuleFeatures();
     if (!scopingNode)
         return;
 
     m_styleTree.remove(scopingNode);
 }
 
 static PassOwnPtrWillBeRawPtr<RuleSet> makeRuleSet(const Vector<RuleFeature>& rules)
@@ skipping 117 matching lines @@
     CascadeOrder innerCascadeOrder = m_treeBoundaryCrossingRules.size();
 
     for (DocumentOrderedList::iterator it = m_treeBoundaryCrossingRules.begin(); it != m_treeBoundaryCrossingRules.end(); ++it) {
         const ContainerNode* scopingNode = toContainerNode(*it);
 
         if (ShadowRoot* shadowRoot = scopingNode->containingShadowRoot()) {
             if (!shadowRoot->isActiveForStyling())
                 continue;
         }
 
-        RuleSet* ruleSet = m_treeBoundaryCrossingRules.ruleSetScopedBy(scopingNode);
+        TreeBoundaryCrossingRules::CSSStyleSheetRuleSubSet* styleSheetsRuleSubSets = m_treeBoundaryCrossingRules.ruleSetScopedBy(scopingNode);
         unsigned boundaryBehavior = SelectorChecker::ScopeContainsLastMatchedElement;
         bool isInnerTreeScope = element->treeScope().isInclusiveAncestorOf(scopingNode->treeScope());
 
         // If a given scoping node is a shadow root and a given element is in a descendant tree of tree hosted by
         // the scoping node's shadow host, we should use ScopeIsShadowHost.
         if (scopingNode && scopingNode->isShadowRoot()) {
             if (element->isInDescendantTreeOf(toShadowRoot(scopingNode)->host()))
                 boundaryBehavior |= SelectorChecker::ScopeIsShadowHost;
             scopingNode = toShadowRoot(scopingNode)->host();
         }
 
         CascadeOrder cascadeOrder = isInnerTreeScope ? innerCascadeOrder : outerCascadeOrder;
-
-        collector.collectMatchingRules(MatchRequest(ruleSet, includeEmptyRules, scopingNode), ruleRange, static_cast<SelectorChecker::BehaviorAtBoundary>(boundaryBehavior), ignoreCascadeScope, cascadeOrder);
+        for (TreeBoundaryCrossingRules::CSSStyleSheetRuleSubSet::iterator it = styleSheetsRuleSubSets->begin(); it != styleSheetsRuleSubSets->end(); ++it) {
+            RuleSet* ruleSet = it->value.get();
+            collector.collectMatchingRules(MatchRequest(ruleSet, includeEmptyRules, scopingNode, it->key), ruleRange, static_cast<SelectorChecker::BehaviorAtBoundary>(boundaryBehavior), ignoreCascadeScope, cascadeOrder);
+        }
         ++innerCascadeOrder;
         --outerCascadeOrder;
     }
 }
 
 static inline bool applyAuthorStylesOf(const Element* element)
 {
     return element->treeScope().applyAuthorStyles() || (element->shadow() && element->shadow()->applyAuthorStyles());
 }
 
@@ skipping 971 matching lines @@
 bool StyleResolver::mediaQueryAffectedByViewportChange() const
 {
     for (unsigned i = 0; i < m_viewportDependentMediaQueryResults.size(); ++i) {
         if (m_medium->eval(&m_viewportDependentMediaQueryResults[i]->m_expression) != m_viewportDependentMediaQueryResults[i]->m_result)
             return true;
     }
     return false;
 }
 
 } // namespace WebCore