Current work-in-progress crbug.com/567021

third_party/WebKit/Source/core/css/resolver/ScopedStyleResolver.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
  *     documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef ScopedStyleResolver_h
 #define ScopedStyleResolver_h
 
+#include "core/css/ActiveStyleSheets.h"
 #include "core/css/ElementRuleCollector.h"
 #include "core/css/RuleSet.h"
 #include "core/dom/TreeScope.h"
 #include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
 class PageRuleCollector;
 class StyleSheetContents;
-class ViewportStyleResolver;
 
 // This class selects a ComputedStyle for a given element based on a collection of stylesheets.
 class ScopedStyleResolver final : public GarbageCollected<ScopedStyleResolver> {
     WTF_MAKE_NONCOPYABLE(ScopedStyleResolver);
 public:
     static ScopedStyleResolver* create(TreeScope& scope)
     {
         return new ScopedStyleResolver(scope);
     }
 
     const TreeScope& treeScope() const { return *m_scope; }
     ScopedStyleResolver* parent() const;
 
     StyleRuleKeyframes* keyframeStylesForAnimation(const StringImpl* animationName);
 
-    void appendCSSStyleSheet(CSSStyleSheet&, const MediaQueryEvaluator&);
+    void appendActiveStyleSheets(unsigned index, const ActiveStyleSheetVector&);
     void collectMatchingAuthorRules(ElementRuleCollector&, CascadeOrder = ignoreCascadeOrder);
     void collectMatchingShadowHostRules(ElementRuleCollector&, CascadeOrder = ignoreCascadeOrder);
     void collectMatchingTreeBoundaryCrossingRules(ElementRuleCollector&, CascadeOrder = ignoreCascadeOrder);
     void matchPageRules(PageRuleCollector&);
     void collectFeaturesTo(RuleFeatureSet&, HeapHashSet<Member<const StyleSheetContents>>& visitedSharedStyleSheetContents) const;
     void resetAuthorStyle();
-    void collectViewportRulesTo(ViewportStyleResolver*) const;
     bool hasDeepOrShadowSelector() const { return m_hasDeepOrShadowSelector; }
 
     DECLARE_TRACE();
 
 private:
     explicit ScopedStyleResolver(TreeScope& scope)
         : m_scope(scope)
     {
     }
 
     void addTreeBoundaryCrossingRules(const RuleSet&, CSSStyleSheet*, unsigned sheetIndex);
     void addKeyframeRules(const RuleSet&);
     void addFontFaceRules(const RuleSet&);
     void addKeyframeStyle(StyleRuleKeyframes*);
 
     Member<TreeScope> m_scope;
 
     HeapVector<Member<CSSStyleSheet>> m_authorStyleSheets;
+    MediaQueryResultList m_viewportDependentMediaQueryResults;
+    MediaQueryResultList m_deviceDependentMediaQueryResults;
 
     using KeyframesRuleMap = HeapHashMap<const StringImpl*, Member<StyleRuleKeyframes>>;
     KeyframesRuleMap m_keyframesRuleMap;
 
     class RuleSubSet final : public GarbageCollected<RuleSubSet> {
     public:
         static RuleSubSet* create(CSSStyleSheet* sheet, unsigned index, RuleSet* rules)
         {
             return new RuleSubSet(sheet, index, rules);
         }
@@ skipping 14 matching lines @@
     };
     using CSSStyleSheetRuleSubSet = HeapVector<Member<RuleSubSet>>;
 
     Member<CSSStyleSheetRuleSubSet> m_treeBoundaryCrossingRuleSet;
     bool m_hasDeepOrShadowSelector = false;
 };
 
 } // namespace blink
 
 #endif // ScopedStyleResolver_h