1 /* 2 * Copyright (C) 2012 Apple Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef StyleSheetInvalidationAnalysis_h 27 #define StyleSheetInvalidationAnalysis_h 28 29 #include "platform/heap/Handle.h" 30 #include "wtf/HashSet.h" 31 #include "wtf/Vector.h" 32 #include "wtf/text/StringImpl.h" 33 34 namespace blink { 35 36 class Document; 37 class Node; 38 class StyleSheetContents; 39 40 class StyleSheetInvalidationAnalysis { 41 STACK_ALLOCATED(); 42 public: 43 StyleSheetInvalidationAnalysis(const WillBeHeapVector<RawPtrWillBeMember<StyleSheetContents> >&); 44 45 bool dirtiesAllStyle() const { return m_dirtiesAllStyle; } 46 void invalidateStyle(Document&); 47 48 private: 49 50 void analyzeStyleSheet(StyleSheetContents*); 51 52 bool m_dirtiesAllStyle; 53 HashSet<StringImpl*> m_idScopes; 54 HashSet<StringImpl*> m_classScopes; 55 WillBeHeapVector<RawPtrWillBeMember<Node>, 8> m_scopingNodes; 56 }; 57 58 } 59 60 #endif 61
