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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 IntersectionObserver_h | |
6 #define IntersectionObserver_h | |
7 | |
8 #include "bindings/core/v8/ScriptWrappable.h" | |
9 #include "core/dom/Element.h" | |
10 #include "core/dom/IntersectionObservation.h" | |
11 #include "core/dom/IntersectionObserverEntry.h" | |
12 #include "platform/heap/Handle.h" | |
13 #include "wtf/HashSet.h" | |
14 #include "wtf/RefCounted.h" | |
15 #include "wtf/Vector.h" | |
16 | |
17 namespace blink { | |
18 | |
19 class ExceptionState; | |
20 class IntersectionObserverCallback; | |
21 class IntersectionObserverInit; | |
22 | |
23 typedef HeapVector<Member<IntersectionObserverEntry>> IntersectionObserverEntryV ector; | |
esprehn
2015/12/12 00:14:16
remove the typedefs, the name is nearly as long as
szager1
2015/12/16 19:15:36
Done.
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24 | |
25 class IntersectionObserver final : public GarbageCollectedFinalized<Intersection Observer>, public ScriptWrappable { | |
26 DEFINE_WRAPPERTYPEINFO(); | |
27 public: | |
28 typedef HeapHashSet<Member<IntersectionObserver>> HashSet; | |
29 typedef HeapHashSet<WeakMember<IntersectionObserver>> WeakHashSet; | |
esprehn
2015/12/12 00:14:16
I'd remove these and just type out the types in th
szager1
2015/12/16 19:15:37
Done.
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30 | |
31 static IntersectionObserver* create(const IntersectionObserverInit&, Interse ctionObserverCallback*, ExceptionState&); | |
32 static void resumeSuspendedObservers(); | |
33 | |
34 // API methods | |
35 void observe(Element*, ExceptionState&); | |
36 void unobserve(Element*, ExceptionState&); | |
37 void disconnect(); | |
38 IntersectionObserverEntryVector takeRecords(); | |
39 | |
40 Element* root() { return m_root.get(); } | |
41 void computeIntersectionObservations(int); | |
42 void disconnect(IntersectionObservation&); | |
43 bool isDescendantOfRoot(Element*) const; | |
esprehn
2015/12/12 00:14:16
reference
szager1
2015/12/16 19:15:36
I'd argue that in this particular case, using a re
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44 void enqueueIntersectionObserverEntry(IntersectionObserverEntry*); | |
esprehn
2015/12/12 00:14:16
reference
szager1
2015/12/16 19:15:36
Done.
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45 void applyRootMargin(LayoutRect&) const; | |
46 size_t firstThresholdGreaterThan(float ratio) const; | |
47 bool shouldBeSuspended() const; | |
48 void deliver(); | |
49 void setActive(bool); | |
50 bool hasPercentMargin() const; | |
51 const Length& topMargin() const { return m_topMargin; } | |
52 const Length& rightMargin() const { return m_rightMargin; } | |
53 const Length& bottomMargin() const { return m_bottomMargin; } | |
54 const Length& leftMargin() const { return m_leftMargin; } | |
55 | |
56 DECLARE_TRACE(); | |
57 | |
58 private: | |
59 explicit IntersectionObserver(IntersectionObserverCallback*, Element*, const Vector<Length>&, const Vector<float>&); | |
esprehn
2015/12/12 00:14:16
reference for most of these I think? Also the two
szager1
2015/12/16 19:15:36
Done.
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60 | |
61 void checkRootAndDetachIfNecessary(); | |
62 | |
esprehn
2015/12/12 00:14:16
Needed() not Necessary.
ojan
2015/12/12 01:06:29
Lets just call this checkRootAndDetach. We have to
esprehn
2015/12/12 01:49:52
Actually looking at this function just call it det
szager1
2015/12/16 19:15:36
That's not actually what it does. Rather, it chec
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63 Member<IntersectionObserverCallback> m_callback; | |
64 WeakPtrWillBeWeakMember<Element> m_root; | |
65 Member<IntersectionObservation::WeakHashSet> m_observations; | |
esprehn
2015/12/12 00:14:16
just write the types
szager1
2015/12/16 19:15:37
Done.
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66 Member<IntersectionObserverEntryVector> m_entries; | |
67 Vector<float> m_thresholds; | |
68 Length m_topMargin; | |
69 Length m_rightMargin; | |
70 Length m_bottomMargin; | |
71 Length m_leftMargin; | |
esprehn
2015/12/12 00:14:16
wow these things are big... you definitely won't w
szager1
2015/12/16 19:15:36
That would be a very strange use case. I agree th
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72 }; | |
73 | |
74 } // namespace blink | |
75 | |
76 #endif // IntersectionObserver_h | |
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