1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ElementIntersectionObserverData_h
#define ElementIntersectionObserverData_h
#include "bindings/core/v8/ScriptWrappable.h"
#include "bindings/core/v8/TraceWrapperMember.h"
#include "platform/heap/Handle.h"
namespace blink {
class Node;
class IntersectionObservation;
class IntersectionObserver;
class ElementIntersectionObserverData
: public GarbageCollected<ElementIntersectionObserverData>,
public TraceWrapperBase {
public:
ElementIntersectionObserverData();
IntersectionObservation* getObservationFor(IntersectionObserver&);
void addObserver(IntersectionObserver&);
void removeObserver(IntersectionObserver&);
void addObservation(IntersectionObservation&);
void removeObservation(IntersectionObserver&);
void activateValidIntersectionObservers(Node&);
void deactivateAllIntersectionObservers(Node&);
DECLARE_TRACE();
DECLARE_TRACE_WRAPPERS();
private:
// IntersectionObservers for which the Node owning this data is root.
HeapHashSet<WeakMember<IntersectionObserver>> m_intersectionObservers;
// IntersectionObservations for which the Node owning this data is target.
HeapHashMap<TraceWrapperMember<IntersectionObserver>,
Member<IntersectionObservation>>
m_intersectionObservations;
};
} // namespace blink
#endif // ElementIntersectionObserverData_h
|
