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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 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. | 3 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc.
All rights reserved. |
4 * | 4 * |
5 * This library is free software; you can redistribute it and/or | 5 * This library is free software; you can redistribute it and/or |
6 * modify it under the terms of the GNU Library General Public | 6 * modify it under the terms of the GNU Library General Public |
7 * License as published by the Free Software Foundation; either | 7 * License as published by the Free Software Foundation; either |
8 * version 2 of the License, or (at your option) any later version. | 8 * version 2 of the License, or (at your option) any later version. |
9 * | 9 * |
10 * This library is distributed in the hope that it will be useful, | 10 * This library is distributed in the hope that it will be useful, |
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75 | 75 |
76 const unsigned styleSharingListSize = 15; | 76 const unsigned styleSharingListSize = 15; |
77 const unsigned styleSharingMaxDepth = 32; | 77 const unsigned styleSharingMaxDepth = 32; |
78 using StyleSharingList = WillBeHeapDeque<RawPtrWillBeMember<Element>, styleShari
ngListSize>; | 78 using StyleSharingList = WillBeHeapDeque<RawPtrWillBeMember<Element>, styleShari
ngListSize>; |
79 using ActiveInterpolationsMap = HashMap<PropertyHandle, Vector<RefPtr<Interpolat
ion>, 1>>; | 79 using ActiveInterpolationsMap = HashMap<PropertyHandle, Vector<RefPtr<Interpolat
ion>, 1>>; |
80 | 80 |
81 // This class selects a ComputedStyle for a given element based on a collection
of stylesheets. | 81 // This class selects a ComputedStyle for a given element based on a collection
of stylesheets. |
82 class CORE_EXPORT StyleResolver final : public NoBaseWillBeGarbageCollectedFinal
ized<StyleResolver> { | 82 class CORE_EXPORT StyleResolver final : public NoBaseWillBeGarbageCollectedFinal
ized<StyleResolver> { |
83 WTF_MAKE_NONCOPYABLE(StyleResolver); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED
(StyleResolver); | 83 WTF_MAKE_NONCOPYABLE(StyleResolver); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED
(StyleResolver); |
84 public: | 84 public: |
85 explicit StyleResolver(Document&); | 85 static PassOwnPtrWillBeRawPtr<StyleResolver> create(Document& document) |
86 virtual ~StyleResolver(); | 86 { |
| 87 return adoptPtrWillBeNoop(new StyleResolver(document)); |
| 88 } |
| 89 ~StyleResolver(); |
87 | 90 |
88 // FIXME: StyleResolver should not be keeping tree-walk state. | 91 // FIXME: StyleResolver should not be keeping tree-walk state. |
89 // These should move to some global tree-walk state, or should be contained
in a | 92 // These should move to some global tree-walk state, or should be contained
in a |
90 // TreeWalkContext or similar which is passed in to StyleResolver methods wh
en available. | 93 // TreeWalkContext or similar which is passed in to StyleResolver methods wh
en available. |
91 // Using these during tree walk will allow style selector to optimize child
and descendant selector lookups. | 94 // Using these during tree walk will allow style selector to optimize child
and descendant selector lookups. |
92 void pushParentElement(Element&); | 95 void pushParentElement(Element&); |
93 void popParentElement(Element&); | 96 void popParentElement(Element&); |
94 | 97 |
95 PassRefPtr<ComputedStyle> styleForElement(Element*, const ComputedStyle* par
entStyle = 0, StyleSharingBehavior = AllowStyleSharing, | 98 PassRefPtr<ComputedStyle> styleForElement(Element*, const ComputedStyle* par
entStyle = 0, StyleSharingBehavior = AllowStyleSharing, |
96 RuleMatchingBehavior = MatchAllRules); | 99 RuleMatchingBehavior = MatchAllRules); |
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178 void increaseStyleSharingDepth() { ++m_styleSharingDepth; } | 181 void increaseStyleSharingDepth() { ++m_styleSharingDepth; } |
179 void decreaseStyleSharingDepth() { --m_styleSharingDepth; } | 182 void decreaseStyleSharingDepth() { --m_styleSharingDepth; } |
180 | 183 |
181 PassRefPtrWillBeRawPtr<PseudoElement> createPseudoElementIfNeeded(Element& p
arent, PseudoId); | 184 PassRefPtrWillBeRawPtr<PseudoElement> createPseudoElementIfNeeded(Element& p
arent, PseudoId); |
182 | 185 |
183 DECLARE_TRACE(); | 186 DECLARE_TRACE(); |
184 | 187 |
185 void addTreeBoundaryCrossingScope(ContainerNode& scope); | 188 void addTreeBoundaryCrossingScope(ContainerNode& scope); |
186 | 189 |
187 private: | 190 private: |
| 191 explicit StyleResolver(Document&); |
| 192 |
188 PassRefPtr<ComputedStyle> initialStyleForElement(); | 193 PassRefPtr<ComputedStyle> initialStyleForElement(); |
189 | 194 |
190 void initWatchedSelectorRules(); | 195 void initWatchedSelectorRules(); |
191 | 196 |
192 // FIXME: This should probably go away, folded into FontBuilder. | 197 // FIXME: This should probably go away, folded into FontBuilder. |
193 void updateFont(StyleResolverState&); | 198 void updateFont(StyleResolverState&); |
194 | 199 |
195 void loadPendingResources(StyleResolverState&); | 200 void loadPendingResources(StyleResolverState&); |
196 void adjustComputedStyle(StyleResolverState&, Element*); | 201 void adjustComputedStyle(StyleResolverState&, Element*); |
197 | 202 |
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258 | 263 |
259 OwnPtr<StyleResolverStats> m_styleResolverStats; | 264 OwnPtr<StyleResolverStats> m_styleResolverStats; |
260 | 265 |
261 // Use only for Internals::updateStyleAndReturnAffectedElementCount. | 266 // Use only for Internals::updateStyleAndReturnAffectedElementCount. |
262 unsigned m_accessCount; | 267 unsigned m_accessCount; |
263 }; | 268 }; |
264 | 269 |
265 } // namespace blink | 270 } // namespace blink |
266 | 271 |
267 #endif // StyleResolver_h | 272 #endif // StyleResolver_h |
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