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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 #include "config.h" | |
6 #include "core/dom/ElementIntersectionObserverData.h" | |
7 | |
8 #include "core/dom/Document.h" | |
9 #include "core/dom/Element.h" | |
10 #include "core/dom/IntersectionObserverController.h" | |
11 | |
12 namespace blink { | |
13 | |
14 bool ElementIntersectionObserverData::hasIntersectionObserver() const | |
15 { | |
16 return !m_intersectionObservers.isEmpty(); | |
17 } | |
18 | |
19 bool ElementIntersectionObserverData::hasIntersectionObservation() const | |
20 { | |
21 return !m_intersectionObservations.isEmpty(); | |
22 } | |
23 | |
24 bool ElementIntersectionObserverData::hasObservationFor(IntersectionObserver& ob server) const | |
25 { | |
26 return m_intersectionObservations.find(&observer) != m_intersectionObservati ons.end(); | |
esprehn
2015/12/17 01:40:28
.contains(), no need to compare to end()
szager1
2015/12/17 20:27:25
Done.
| |
27 } | |
28 | |
29 void ElementIntersectionObserverData::addObservation(IntersectionObservation& ob servation) | |
30 { | |
31 m_intersectionObservations.set(observation.observer(), &observation); | |
32 } | |
33 | |
34 void ElementIntersectionObserverData::removeObservation(IntersectionObserver& ob server) | |
35 { | |
36 RawPtr<IntersectionObserver> key(&observer); | |
esprehn
2015/12/17 01:40:28
do these not implicitly construct?
szager1
2015/12/17 20:27:25
Whoops, this was left over from a previous attempt
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37 HeapHashMap<Member<IntersectionObserver>, Member<IntersectionObservation>>:: iterator observationIterator = m_intersectionObservations.find(&observer); | |
esprehn
2015/12/17 01:40:28
auto
szager1
2015/12/17 20:27:25
Done.
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38 if (observationIterator != m_intersectionObservations.end()) | |
esprehn
2015/12/17 01:40:28
you can just write "it" for the iterator if you wa
szager1
2015/12/17 20:27:25
Done.
| |
39 observationIterator->value->disconnect(); | |
40 } | |
41 | |
42 void ElementIntersectionObserverData::activateValidIntersectionObservers(Element & element) | |
43 { | |
44 IntersectionObserverController* registry = element.document().intersectionOb serverController(); | |
esprehn
2015/12/17 01:40:28
controller
szager1
2015/12/17 20:27:25
Done.
| |
45 for (auto& observer : m_intersectionObservers) { | |
46 registry->addTrackedObserver(*observer); | |
47 observer->setActive(true); | |
48 } | |
49 for (auto& observation : m_intersectionObservations) | |
50 observation.value->setActive(observation.key->isDescendantOfRoot(&elemen t)); | |
51 } | |
52 | |
53 void ElementIntersectionObserverData::deactivateAllIntersectionObservers(Element & element) | |
54 { | |
55 Document& document = element.document(); | |
56 for (auto& observer : m_intersectionObservers) { | |
57 document.intersectionObserverController()->removeTrackedObserversForRoot (element); | |
esprehn
2015/12/17 01:40:28
maybe do this out of the loop and save to a variab
szager1
2015/12/17 20:27:25
Oh, this is wrong, removeTrackedObserversForRoot s
| |
58 observer->setActive(false); | |
59 } | |
60 for (auto& observation : m_intersectionObservations) | |
61 observation.value->setActive(false); | |
62 } | |
63 | |
64 #if !ENABLE(OILPAN) | |
65 void ElementIntersectionObserverData::dispose() | |
66 { | |
67 HeapVector<Member<IntersectionObservation>> toDisconnect; | |
68 copyValuesToVector(m_intersectionObservations, toDisconnect); | |
69 for (auto& observation : toDisconnect) | |
70 observation->disconnect(); | |
71 ASSERT(m_intersectionObservations.isEmpty()); | |
72 | |
73 HeapVector<Member<IntersectionObserver>> toDispose; | |
74 copyToVector(m_intersectionObservers, toDispose); | |
75 for (auto& observer : toDispose) | |
76 observer->dispose(); | |
77 ASSERT(m_intersectionObservers.isEmpty()); | |
78 | |
79 m_weakPointerFactory.clear(); | |
80 } | |
81 #endif | |
82 | |
83 WeakPtr<Element> ElementIntersectionObserverData::createWeakPtr(Element* element ) | |
84 { | |
85 #if ENABLE(OILPAN) | |
86 return element; | |
87 #else | |
88 if (!m_weakPointerFactory) | |
89 m_weakPointerFactory = adoptPtrWillBeNoop(new WeakPtrFactory<Element>(el ement)); | |
90 return m_weakPointerFactory->createWeakPtr(); | |
91 #endif | |
92 } | |
93 | |
94 DEFINE_TRACE(ElementIntersectionObserverData) | |
95 { | |
96 visitor->trace(m_intersectionObservers); | |
97 visitor->trace(m_intersectionObservations); | |
98 } | |
99 | |
100 } // namespace blink { | |
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