third_party/WebKit/Source/core/dom/IntersectionObserver.h - Issue 2173353002: Simplify ElementVisibilityObserver implementation.

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Issue 2173353002: Simplify ElementVisibilityObserver implementation. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: adjust visibility Created 4 years, 5 months ago

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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 IntersectionObserver_h	5 #ifndef IntersectionObserver_h

6 #define IntersectionObserver_h	6 #define IntersectionObserver_h

7	7

8 #include "bindings/core/v8/ExceptionStatePlaceholder.h"	8 #include "bindings/core/v8/ExceptionStatePlaceholder.h"

9 #include "bindings/core/v8/ScriptWrappable.h"	9 #include "bindings/core/v8/ScriptWrappable.h"

10 #include "core/dom/IntersectionObservation.h"	10 #include "core/dom/IntersectionObservation.h"

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23 class IntersectionObserverCallback;	23 class IntersectionObserverCallback;

24 class IntersectionObserverInit;	24 class IntersectionObserverInit;

25	25

26 class CORE_EXPORT IntersectionObserver final : public GarbageCollectedFinalized< IntersectionObserver>, public ScriptWrappable {	26 class CORE_EXPORT IntersectionObserver final : public GarbageCollectedFinalized< IntersectionObserver>, public ScriptWrappable {

27 DEFINE_WRAPPERTYPEINFO();	27 DEFINE_WRAPPERTYPEINFO();

28	28

29 public:	29 public:

30 using EventCallback = Function<void(const HeapVector<Member<IntersectionObse rverEntry>>&), WTF::SameThreadAffinity>;	30 using EventCallback = Function<void(const HeapVector<Member<IntersectionObse rverEntry>>&), WTF::SameThreadAffinity>;

31	31

32 static IntersectionObserver* create(const IntersectionObserverInit&, Interse ctionObserverCallback&, ExceptionState&);	32 static IntersectionObserver* create(const IntersectionObserverInit&, Interse ctionObserverCallback&, ExceptionState&);

	33 // TODO(sof): unused, consider retiring?

33 static IntersectionObserver* create(const Vector<Length>& rootMargin, const Vector<float>& thresholds, Document*, std::unique_ptr<EventCallback>);	34 static IntersectionObserver* create(const Vector<Length>& rootMargin, const Vector<float>& thresholds, Document*, std::unique_ptr<EventCallback>);

34 static void resumeSuspendedObservers();	35 static void resumeSuspendedObservers();

35	36

36 // API methods.	37 // API methods.

37 void observe(Element*, ExceptionState& = ASSERT_NO_EXCEPTION);	38 void observe(Element*, ExceptionState& = ASSERT_NO_EXCEPTION);

38 void unobserve(Element*, ExceptionState& = ASSERT_NO_EXCEPTION);	39 void unobserve(Element*, ExceptionState& = ASSERT_NO_EXCEPTION);

39 void disconnect(ExceptionState& = ASSERT_NO_EXCEPTION);	40 void disconnect(ExceptionState& = ASSERT_NO_EXCEPTION);

40 HeapVector<Member<IntersectionObserverEntry>> takeRecords(ExceptionState&);	41 HeapVector<Member<IntersectionObserverEntry>> takeRecords(ExceptionState&);

41	42

42 // API attributes.	43 // API attributes.

(...skipping 29 matching lines...) Expand all Loading...
72 Vector<float> m_thresholds;	73 Vector<float> m_thresholds;

73 Length m_topMargin;	74 Length m_topMargin;

74 Length m_rightMargin;	75 Length m_rightMargin;

75 Length m_bottomMargin;	76 Length m_bottomMargin;

76 Length m_leftMargin;	77 Length m_leftMargin;

77 };	78 };

78	79

79 } // namespace blink	80 } // namespace blink

80	81

81 #endif // IntersectionObserver_h	82 #endif // IntersectionObserver_h

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