1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll (at) 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/HashSet.h" 35 #include "wtf/OwnPtr.h" 36 #include "wtf/PassOwnPtr.h" 37 38 namespace WebCore { 39 40 class MediaQueryEvaluator; 41 class PageRuleCollector; 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: 48 static PassOwnPtr<ScopedStyleResolver> create(ContainerNode& scopingNode) { return adoptPtr(new ScopedStyleResolver(scopingNode)); } 49 50 static ContainerNode* scopingNodeFor(Document&, const CSSStyleSheet*); 51 52 const ContainerNode& scopingNode() const { return m_scopingNode; } 53 const TreeScope& treeScope() const { return m_scopingNode.treeScope(); } 54 void setParent(ScopedStyleResolver* newParent) { m_parent = newParent; } 55 ScopedStyleResolver* parent() { return m_parent; } 56 57 public: 58 const StyleRuleKeyframes* keyframeStylesForAnimation(const StringImpl* animationName); 59 void addKeyframeStyle(PassRefPtrWillBeRawPtr<StyleRuleKeyframes>); 60 61 void collectMatchingAuthorRules(ElementRuleCollector&, bool includeEmptyRules, bool applyAuthorStyles, CascadeScope, CascadeOrder = ignoreCascadeOrder); 62 void matchPageRules(PageRuleCollector&); 63 void addRulesFromSheet(CSSStyleSheet*, const MediaQueryEvaluator&, StyleResolver*); 64 void collectFeaturesTo(RuleFeatureSet&, HashSet<const StyleSheetContents*>& visitedSharedStyleSheetContents); 65 void resetAuthorStyle(); 66 void collectViewportRulesTo(StyleResolver*) const; 67 68 private: 69 explicit ScopedStyleResolver(ContainerNode& scopingNode) : m_scopingNode(scopingNode), m_parent(0) { } 70 71 ContainerNode& m_scopingNode; 72 ScopedStyleResolver* m_parent; 73 74 WillBePersistentHeapVector<RawPtrWillBeMember<CSSStyleSheet> > m_authorStyleSheets; 75 76 typedef WillBePersistentHeapHashMap<const StringImpl*, RefPtrWillBeMember<StyleRuleKeyframes> > KeyframesRuleMap; 77 KeyframesRuleMap m_keyframesRuleMap; 78 }; 79 80 } // namespace WebCore 81 82 #endif // ScopedStyleResolver_h 83
