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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef IntersectionObserverController_h | 5 #ifndef IntersectionObserverController_h |
6 #define IntersectionObserverController_h | 6 #define IntersectionObserverController_h |
7 | 7 |
8 #include "core/dom/ActiveDOMObject.h" | 8 #include "core/dom/ActiveDOMObject.h" |
9 #include "core/dom/IdleRequestCallback.h" | |
10 #include "core/dom/IntersectionObserver.h" | 9 #include "core/dom/IntersectionObserver.h" |
11 #include "platform/heap/Handle.h" | 10 #include "platform/heap/Handle.h" |
12 #include "wtf/HashSet.h" | 11 #include "wtf/HashSet.h" |
| 12 #include "wtf/WeakPtr.h" |
13 | 13 |
14 // Design doc for IntersectionObserver implementation: | 14 // Design doc for IntersectionObserver implementation: |
15 // https://docs.google.com/a/google.com/document/d/1hLK0eyT5_BzyNS4OkjsnoqqFQD
YCbKfyBinj94OnLiQ | 15 // https://docs.google.com/a/google.com/document/d/1hLK0eyT5_BzyNS4OkjsnoqqFQD
YCbKfyBinj94OnLiQ |
16 | 16 |
17 namespace blink { | 17 namespace blink { |
18 | 18 |
19 class Document; | 19 class Document; |
20 | 20 |
21 class IntersectionObserverController : public IdleRequestCallback, public Active
DOMObject { | 21 class IntersectionObserverController : public GarbageCollectedFinalized<Intersec
tionObserverController>, public ActiveDOMObject { |
22 USING_GARBAGE_COLLECTED_MIXIN(IntersectionObserverController); | 22 USING_GARBAGE_COLLECTED_MIXIN(IntersectionObserverController); |
23 public: | 23 public: |
24 static IntersectionObserverController* create(Document*); | 24 static IntersectionObserverController* create(Document*); |
25 ~IntersectionObserverController(); | 25 ~IntersectionObserverController(); |
26 | 26 |
27 void resume() override; | 27 void resume() override; |
28 void handleEvent(IdleDeadline*) override; | |
29 | 28 |
30 void scheduleIntersectionObserverForDelivery(IntersectionObserver&); | 29 void scheduleIntersectionObserverForDelivery(IntersectionObserver&); |
31 void deliverIntersectionObservations(); | 30 void deliverIntersectionObservations(); |
32 void computeTrackedIntersectionObservations(); | 31 void computeTrackedIntersectionObservations(); |
33 void addTrackedObserver(IntersectionObserver&); | 32 void addTrackedObserver(IntersectionObserver&); |
34 void removeTrackedObserversForRoot(const Node&); | 33 void removeTrackedObserversForRoot(const Node&); |
35 | 34 |
36 DECLARE_TRACE(); | 35 DECLARE_TRACE(); |
37 | 36 |
38 private: | 37 private: |
39 explicit IntersectionObserverController(Document*); | 38 explicit IntersectionObserverController(Document*); |
40 | 39 |
41 private: | 40 private: |
42 // IntersectionObservers for which this is the tracking document. | 41 // IntersectionObservers for which this is the tracking document. |
43 HeapHashSet<WeakMember<IntersectionObserver>> m_trackedIntersectionObservers
; | 42 HeapHashSet<WeakMember<IntersectionObserver>> m_trackedIntersectionObservers
; |
44 // IntersectionObservers for which this is the execution context of the call
back. | 43 // IntersectionObservers for which this is the execution context of the call
back. |
45 HeapHashSet<Member<IntersectionObserver>> m_pendingIntersectionObservers; | 44 HeapHashSet<Member<IntersectionObserver>> m_pendingIntersectionObservers; |
| 45 WTF::WeakPtrFactory<IntersectionObserverController> m_weakPtrFactory; |
46 | 46 |
47 int m_callbackID; | |
48 bool m_callbackFiredWhileSuspended; | 47 bool m_callbackFiredWhileSuspended; |
49 }; | 48 }; |
50 | 49 |
51 } // namespace blink | 50 } // namespace blink |
52 | 51 |
53 #endif // IntersectionObserverController_h | 52 #endif // IntersectionObserverController_h |
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