sky/engine/core/css/invalidation/StyleInvalidator.h - Issue 712173002: Remove StyleInvalidator machinery.

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Issue 712173002: Remove StyleInvalidator machinery. (Closed) Base URL: git@github.com:domokit/mojo.git@master

Patch Set: Created 6 years, 1 month ago

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1 // Copyright 2014 The Chromium Authors. All rights reserved.

2 // Use of this source code is governed by a BSD-style license that can be

3 // found in the LICENSE file.

4

5 #ifndef StyleInvalidator_h

6 #define StyleInvalidator_h

7

8 #include "platform/heap/Handle.h"

9 #include "wtf/HashMap.h"

10 #include "wtf/Vector.h"

11

12 namespace blink {

13

14 class DescendantInvalidationSet;

15 class Document;

16 class Element;

17 class Node;

18

19 class StyleInvalidator {

20 DISALLOW_ALLOCATION();

21 public:

22 StyleInvalidator();

23 ~StyleInvalidator();

24 void invalidate(Document&);

25 void scheduleInvalidation(PassRefPtr<DescendantInvalidationSet>, Element&);

26

27 // Clears all style invalidation state for the passed node.

28 void clearInvalidation(Node&);

29

30 void clearPendingInvalidations();

31

32 void trace(Visitor*);

33

34 private:

35 struct RecursionData {

36 RecursionData()

37 : m_invalidateCustomPseudo(false)

38 , m_wholeSubtreeInvalid(false)

39 , m_treeBoundaryCrossing(false)

40 { }

41

42 void pushInvalidationSet(const DescendantInvalidationSet&);

43 bool matchesCurrentInvalidationSets(Element&);

44 bool hasInvalidationSets() const { return !wholeSubtreeInvalid() && m_in validationSets.size(); }

45

46 bool wholeSubtreeInvalid() const { return m_wholeSubtreeInvalid; }

47 void setWholeSubtreeInvalid() { m_wholeSubtreeInvalid = true; }

48

49 bool treeBoundaryCrossing() const { return m_treeBoundaryCrossing; }

50

51 typedef Vector<const DescendantInvalidationSet*, 16> InvalidationSets;

52 InvalidationSets m_invalidationSets;

53 bool m_invalidateCustomPseudo;

54 bool m_wholeSubtreeInvalid;

55 bool m_treeBoundaryCrossing;

56 };

57

58 bool invalidate(Element&, RecursionData&);

59 bool invalidateChildren(Element&, RecursionData&);

60 bool checkInvalidationSetsAgainstElement(Element&, RecursionData&);

61

62 class RecursionCheckpoint {

63 public:

64 RecursionCheckpoint(RecursionData* data)

65 : m_prevInvalidationSetsSize(data->m_invalidationSets.size())

66 , m_prevInvalidateCustomPseudo(data->m_invalidateCustomPseudo)

67 , m_prevWholeSubtreeInvalid(data->m_wholeSubtreeInvalid)

68 , m_treeBoundaryCrossing(data->m_treeBoundaryCrossing)

69 , m_data(data)

70 { }

71 ~RecursionCheckpoint()

72 {

73 m_data->m_invalidationSets.remove(m_prevInvalidationSetsSize, m_data ->m_invalidationSets.size() - m_prevInvalidationSetsSize);

74 m_data->m_invalidateCustomPseudo = m_prevInvalidateCustomPseudo;

75 m_data->m_wholeSubtreeInvalid = m_prevWholeSubtreeInvalid;

76 m_data->m_treeBoundaryCrossing = m_treeBoundaryCrossing;

77 }

78

79 private:

80 int m_prevInvalidationSetsSize;

81 bool m_prevInvalidateCustomPseudo;

82 bool m_prevWholeSubtreeInvalid;

83 bool m_treeBoundaryCrossing;

84 RecursionData* m_data;

85 };

86

87 typedef Vector<RefPtr<DescendantInvalidationSet> > InvalidationList;

88 typedef HashMap<RawPtr<Element>, OwnPtr<InvalidationList> > PendingInvalidat ionMap;

89

90 InvalidationList& ensurePendingInvalidationList(Element&);

91

92 PendingInvalidationMap m_pendingInvalidationMap;

93 };

94

95 } // namespace blink

96

97 #endif // StyleInvalidator_h

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