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| 1 // Copyright 2016 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 ElementIntersectionObserverData_h | |
| 6 #define ElementIntersectionObserverData_h | |
| 7 | |
| 8 #include "platform/heap/Handle.h" | |
| 9 | |
| 10 namespace blink { | |
| 11 | |
| 12 class Element; | |
| 13 class IntersectionObservation; | |
| 14 class IntersectionObserver; | |
| 15 | |
| 16 class ElementIntersectionObserverData : public GarbageCollectedFinalized<Element
IntersectionObserverData> { | |
| 17 public: | |
| 18 DECLARE_TRACE(); | |
| 19 ElementIntersectionObserverData(); | |
| 20 ~ElementIntersectionObserverData(); | |
| 21 | |
| 22 bool hasIntersectionObserver() const; | |
| 23 bool hasIntersectionObservation() const; | |
| 24 IntersectionObservation* getObservationFor(IntersectionObserver&); | |
| 25 void addObservation(IntersectionObservation&); | |
| 26 void removeObservation(IntersectionObserver&); | |
| 27 void activateValidIntersectionObservers(Element&); | |
| 28 void deactivateAllIntersectionObservers(Element&); | |
| 29 | |
| 30 #if !ENABLE(OILPAN) | |
| 31 void dispose(); | |
| 32 #endif | |
| 33 | |
| 34 WeakPtrWillBeRawPtr<Element> createWeakPtr(Element*); | |
| 35 | |
| 36 private: | |
| 37 // IntersectionObservers for which the Element owning this data is root. | |
| 38 HeapHashSet<WeakMember<IntersectionObserver>> m_intersectionObservers; | |
| 39 // IntersectionObservations for which the Element owning this data is target
. | |
| 40 HeapHashMap<Member<IntersectionObserver>, Member<IntersectionObservation>> m
_intersectionObservations; | |
| 41 | |
| 42 #if !ENABLE(OILPAN) | |
| 43 OwnPtr<WeakPtrFactory<Element>> m_weakPointerFactory; | |
| 44 #endif | |
| 45 }; | |
| 46 | |
| 47 } // namespace blink | |
| 48 | |
| 49 #endif // ElementIntersectionObserverData_h | |
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