1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) 3 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved. 4 * Copyright (C) 2012 Google Inc. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 22 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 24 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef ScopedStyleResolver_h 28 #define ScopedStyleResolver_h 29 30 #include "core/css/ElementRuleCollector.h" 31 #include "core/css/RuleSet.h" 32 #include "core/dom/ContainerNode.h" 33 #include "wtf/HashMap.h" 34 #include "wtf/OwnPtr.h" 35 #include "wtf/PassOwnPtr.h" 36 37 namespace WebCore { 38 39 class MediaQueryEvaluator; 40 class PageRuleCollector; 41 class ShadowRoot; 42 class StyleSheetContents; 43 44 // This class selects a RenderStyle for a given element based on a collection of stylesheets. 45 class ScopedStyleResolver { 46 WTF_MAKE_NONCOPYABLE(ScopedStyleResolver); WTF_MAKE_FAST_ALLOCATED; 47 public: create(ContainerNode & scopingNode)48 static PassOwnPtr<ScopedStyleResolver> create(ContainerNode& scopingNode) { return adoptPtr(new ScopedStyleResolver(scopingNode)); } 49 50 static ContainerNode* scopingNodeFor(Document&, const CSSStyleSheet*); 51 scopingNode()52 const ContainerNode& scopingNode() const { return m_scopingNode; } treeScope()53 const TreeScope& treeScope() const { return m_scopingNode.treeScope(); } setParent(ScopedStyleResolver * newParent)54 void setParent(ScopedStyleResolver* newParent) { m_parent = newParent; } parent()55 ScopedStyleResolver* parent() { return m_parent; } 56 57 public: 58 bool checkRegionStyle(Element*); 59 const StyleRuleKeyframes* keyframeStylesForAnimation(const StringImpl* animationName); 60 void addKeyframeStyle(PassRefPtr<StyleRuleKeyframes>); 61 62 void collectMatchingAuthorRules(ElementRuleCollector&, bool includeEmptyRules, bool applyAuthorStyles, CascadeScope, CascadeOrder = ignoreCascadeOrder); 63 void matchPageRules(PageRuleCollector&); 64 void addRulesFromSheet(StyleSheetContents*, const MediaQueryEvaluator&, StyleResolver*); 65 void collectFeaturesTo(RuleFeatureSet&); 66 void resetAuthorStyle(); 67 void collectViewportRulesTo(StyleResolver*) const; 68 69 private: ScopedStyleResolver(ContainerNode & scopingNode)70 explicit ScopedStyleResolver(ContainerNode& scopingNode) : m_scopingNode(scopingNode), m_parent(0) { } 71 72 RuleSet* ensureAuthorStyle(); 73 74 ContainerNode& m_scopingNode; 75 ScopedStyleResolver* m_parent; 76 77 Vector<StyleSheetContents*> m_authorStyleSheets; 78 79 typedef HashMap<const StringImpl*, RefPtr<StyleRuleKeyframes> > KeyframesRuleMap; 80 KeyframesRuleMap m_keyframesRuleMap; 81 }; 82 83 } // namespace WebCore 84 85 #endif // ScopedStyleResolver_h 86