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1 // Copyright 2015 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 IntersectionObserverController_h | |
6 #define IntersectionObserverController_h | |
7 | |
8 #include "core/dom/Element.h" | |
9 #include "core/dom/IntersectionObserver.h" | |
10 #include "platform/Timer.h" | |
11 #include "platform/heap/Handle.h" | |
12 #include "wtf/HashSet.h" | |
13 | |
14 namespace blink { | |
15 | |
16 class IntersectionObserverController : public GarbageCollectedFinalized<Intersec tionObserverController> { | |
17 public: | |
18 IntersectionObserverController(); | |
19 ~IntersectionObserverController(); | |
20 | |
21 void scheduleIntersectionObserverForDelivery(IntersectionObserver&); | |
22 void resumeSuspendedIntersectionObservers(); | |
23 void deliverIntersectionObservations(Timer<IntersectionObserverController>*) ; | |
24 void computeTrackedIntersectionObservations(); | |
25 void addTrackedObserver(IntersectionObserver&); | |
26 void removeTrackedObserversForRoot(const Element&); | |
27 void dispose(); | |
28 | |
29 DECLARE_TRACE(); | |
30 | |
31 private: | |
32 // Design doc for IntersectionObserver implementation: | |
33 // https://docs.google.com/a/google.com/document/d/1hLK0eyT5_BzyNS4Okjsnoq qFQDYCbKfyBinj94OnLiQ | |
34 | |
35 Timer<IntersectionObserverController> m_timer; | |
36 // IntersectionObservers for which this is the tracking document. | |
37 HeapHashSet<WeakMember<IntersectionObserver>> m_trackedIntersectionObservers ; | |
38 // IntersectionObservers for which this is the execution context of the call back. | |
39 HeapHashSet<Member<IntersectionObserver>> m_activeIntersectionObservers; | |
haraken
2016/01/02 13:47:41
I'd rename this to m_pendingIntersectionObservers.
szager1
2016/01/02 19:18:34
Done.
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40 HeapHashSet<Member<IntersectionObserver>> m_suspendedIntersectionObservers; | |
haraken
2016/01/02 13:47:41
As commented in another place, I'd drop this from
| |
41 }; | |
42 | |
43 } // namespace blink | |
44 | |
45 #endif // IntersectionObserverController_h | |
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