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1 /* | 1 /* |
2 * Copyright (C) 2013 Google, Inc. | 2 * Copyright (C) 2013 Google, Inc. |
3 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 3 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
4 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc.
All rights reserved. | 4 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc.
All rights reserved. |
5 * | 5 * |
6 * This library is free software; you can redistribute it and/or | 6 * This library is free software; you can redistribute it and/or |
7 * modify it under the terms of the GNU Library General Public | 7 * modify it under the terms of the GNU Library General Public |
8 * License as published by the Free Software Foundation; either | 8 * License as published by the Free Software Foundation; either |
9 * version 2 of the License, or (at your option) any later version. | 9 * version 2 of the License, or (at your option) any later version. |
10 * | 10 * |
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21 | 21 |
22 #ifndef SharedStyleFinder_h | 22 #ifndef SharedStyleFinder_h |
23 #define SharedStyleFinder_h | 23 #define SharedStyleFinder_h |
24 | 24 |
25 #include "core/css/resolver/ElementResolveContext.h" | 25 #include "core/css/resolver/ElementResolveContext.h" |
26 #include "core/dom/Element.h" | 26 #include "core/dom/Element.h" |
27 | 27 |
28 namespace blink { | 28 namespace blink { |
29 | 29 |
30 class Element; | 30 class Element; |
31 class LayoutStyle; | 31 class ComputedStyle; |
32 class RuleFeatureSet; | 32 class RuleFeatureSet; |
33 class RuleSet; | 33 class RuleSet; |
34 class SpaceSplitString; | 34 class SpaceSplitString; |
35 class StyleResolver; | 35 class StyleResolver; |
36 | 36 |
37 class SharedStyleFinder { | 37 class SharedStyleFinder { |
38 STACK_ALLOCATED(); | 38 STACK_ALLOCATED(); |
39 public: | 39 public: |
40 // RuleSets are passed non-const as the act of matching against them can cau
se them | 40 // RuleSets are passed non-const as the act of matching against them can cau
se them |
41 // to be compacted. :( | 41 // to be compacted. :( |
42 SharedStyleFinder(const ElementResolveContext& context, | 42 SharedStyleFinder(const ElementResolveContext& context, |
43 const RuleFeatureSet& features, RuleSet* siblingRuleSet, | 43 const RuleFeatureSet& features, RuleSet* siblingRuleSet, |
44 RuleSet* uncommonAttributeRuleSet, StyleResolver& styleResolver) | 44 RuleSet* uncommonAttributeRuleSet, StyleResolver& styleResolver) |
45 : m_elementAffectedByClassRules(false) | 45 : m_elementAffectedByClassRules(false) |
46 , m_features(features) | 46 , m_features(features) |
47 , m_siblingRuleSet(siblingRuleSet) | 47 , m_siblingRuleSet(siblingRuleSet) |
48 , m_uncommonAttributeRuleSet(uncommonAttributeRuleSet) | 48 , m_uncommonAttributeRuleSet(uncommonAttributeRuleSet) |
49 , m_styleResolver(styleResolver) | 49 , m_styleResolver(styleResolver) |
50 , m_context(context) | 50 , m_context(context) |
51 { } | 51 { } |
52 | 52 |
53 LayoutStyle* findSharedStyle(); | 53 ComputedStyle* findSharedStyle(); |
54 | 54 |
55 private: | 55 private: |
56 Element* findElementForStyleSharing() const; | 56 Element* findElementForStyleSharing() const; |
57 | 57 |
58 // Only used when we're collecting stats on styles. | 58 // Only used when we're collecting stats on styles. |
59 bool documentContainsValidCandidate() const; | 59 bool documentContainsValidCandidate() const; |
60 | 60 |
61 bool classNamesAffectedByRules(const SpaceSplitString&) const; | 61 bool classNamesAffectedByRules(const SpaceSplitString&) const; |
62 | 62 |
63 bool canShareStyleWithElement(Element& candidate) const; | 63 bool canShareStyleWithElement(Element& candidate) const; |
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74 const RuleFeatureSet& m_features; | 74 const RuleFeatureSet& m_features; |
75 RawPtrWillBeMember<RuleSet> m_siblingRuleSet; | 75 RawPtrWillBeMember<RuleSet> m_siblingRuleSet; |
76 RawPtrWillBeMember<RuleSet> m_uncommonAttributeRuleSet; | 76 RawPtrWillBeMember<RuleSet> m_uncommonAttributeRuleSet; |
77 StyleResolver& m_styleResolver; | 77 StyleResolver& m_styleResolver; |
78 const ElementResolveContext& m_context; | 78 const ElementResolveContext& m_context; |
79 }; | 79 }; |
80 | 80 |
81 } // namespace blink | 81 } // namespace blink |
82 | 82 |
83 #endif // SharedStyleFinder_h | 83 #endif // SharedStyleFinder_h |
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