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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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36 #include "platform/Timer.h" | 36 #include "platform/Timer.h" |
37 #include "wtf/HashCountedSet.h" | 37 #include "wtf/HashCountedSet.h" |
38 #include "wtf/HashSet.h" | 38 #include "wtf/HashSet.h" |
39 #include "wtf/RefPtr.h" | 39 #include "wtf/RefPtr.h" |
40 #include "wtf/Vector.h" | 40 #include "wtf/Vector.h" |
41 #include "wtf/WeakPtr.h" | 41 #include "wtf/WeakPtr.h" |
42 #include "wtf/text/WTFString.h" | 42 #include "wtf/text/WTFString.h" |
43 | 43 |
44 namespace blink { | 44 namespace blink { |
45 | 45 |
46 class CSSSelectorWatch FINAL : public NoBaseWillBeGarbageCollectedFinalized<CSSS
electorWatch>, public DocumentSupplement { | 46 class CSSSelectorWatch final : public NoBaseWillBeGarbageCollectedFinalized<CSSS
electorWatch>, public DocumentSupplement { |
47 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(CSSSelectorWatch); | 47 WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(CSSSelectorWatch); |
48 public: | 48 public: |
49 virtual ~CSSSelectorWatch() { } | 49 virtual ~CSSSelectorWatch() { } |
50 | 50 |
51 static CSSSelectorWatch& from(Document&); | 51 static CSSSelectorWatch& from(Document&); |
52 | 52 |
53 void watchCSSSelectors(const Vector<String>& selectors); | 53 void watchCSSSelectors(const Vector<String>& selectors); |
54 const WillBeHeapVector<RefPtrWillBeMember<StyleRule> >& watchedCallbackSelec
tors() const { return m_watchedCallbackSelectors; } | 54 const WillBeHeapVector<RefPtrWillBeMember<StyleRule> >& watchedCallbackSelec
tors() const { return m_watchedCallbackSelectors; } |
55 | 55 |
56 void updateSelectorMatches(const Vector<String>& removedSelectors, const Vec
tor<String>& addedSelectors); | 56 void updateSelectorMatches(const Vector<String>& removedSelectors, const Vec
tor<String>& addedSelectors); |
57 | 57 |
58 virtual void trace(Visitor*) OVERRIDE; | 58 virtual void trace(Visitor*) override; |
59 | 59 |
60 private: | 60 private: |
61 explicit CSSSelectorWatch(Document&); | 61 explicit CSSSelectorWatch(Document&); |
62 void callbackSelectorChangeTimerFired(Timer<CSSSelectorWatch>*); | 62 void callbackSelectorChangeTimerFired(Timer<CSSSelectorWatch>*); |
63 Document& document() const { return *m_document; } | 63 Document& document() const { return *m_document; } |
64 | 64 |
65 RawPtrWillBeMember<Document> m_document; | 65 RawPtrWillBeMember<Document> m_document; |
66 | 66 |
67 WillBeHeapVector<RefPtrWillBeMember<StyleRule> > m_watchedCallbackSelectors; | 67 WillBeHeapVector<RefPtrWillBeMember<StyleRule> > m_watchedCallbackSelectors; |
68 | 68 |
69 // Maps a CSS selector string with a -webkit-callback property to the number | 69 // Maps a CSS selector string with a -webkit-callback property to the number |
70 // of matching RenderStyle objects in this document. | 70 // of matching RenderStyle objects in this document. |
71 HashCountedSet<String> m_matchingCallbackSelectors; | 71 HashCountedSet<String> m_matchingCallbackSelectors; |
72 // Selectors are relative to m_matchingCallbackSelectors's contents at | 72 // Selectors are relative to m_matchingCallbackSelectors's contents at |
73 // the previous call to selectorMatchChanged. | 73 // the previous call to selectorMatchChanged. |
74 HashSet<String> m_addedSelectors; | 74 HashSet<String> m_addedSelectors; |
75 HashSet<String> m_removedSelectors; | 75 HashSet<String> m_removedSelectors; |
76 | 76 |
77 Timer<CSSSelectorWatch> m_callbackSelectorChangeTimer; | 77 Timer<CSSSelectorWatch> m_callbackSelectorChangeTimer; |
78 | 78 |
79 // When an element is reparented, the new location's style is evaluated afte
r the expriation of the relayout timer. | 79 // When an element is reparented, the new location's style is evaluated afte
r the expriation of the relayout timer. |
80 // We don't want to send redundant callbacks to the embedder, so this counte
r lets us wait another time around the event loop. | 80 // We don't want to send redundant callbacks to the embedder, so this counte
r lets us wait another time around the event loop. |
81 int m_timerExpirations; | 81 int m_timerExpirations; |
82 }; | 82 }; |
83 | 83 |
84 } // namespace blink | 84 } // namespace blink |
85 | 85 |
86 #endif // CSSSelectorWatch_h | 86 #endif // CSSSelectorWatch_h |
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