Index: third_party/WebKit/Source/core/dom/ElementIntersectionObserverData.h |
diff --git a/third_party/WebKit/Source/core/dom/ElementIntersectionObserverData.h b/third_party/WebKit/Source/core/dom/ElementIntersectionObserverData.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..007fe5de8bdae51ac7679b1b55bc6e8c3563ffac |
--- /dev/null |
+++ b/third_party/WebKit/Source/core/dom/ElementIntersectionObserverData.h |
@@ -0,0 +1,49 @@ |
+// Copyright 2015 The Chromium Authors. All rights reserved. |
+// Use of this source code is governed by a BSD-style license that can be |
+// found in the LICENSE file. |
+ |
+#ifndef ElementIntersectionObserverData_h |
+#define ElementIntersectionObserverData_h |
+ |
+#include "platform/heap/Handle.h" |
+ |
+namespace blink { |
+ |
+class Element; |
+class IntersectionObservation; |
+class IntersectionObserver; |
+ |
+class ElementIntersectionObserverData : public GarbageCollectedFinalized<ElementIntersectionObserverData> { |
+public: |
+ DECLARE_TRACE(); |
+ ElementIntersectionObserverData(); |
+ ~ElementIntersectionObserverData(); |
+ |
+ bool hasIntersectionObserver() const; |
+ bool hasIntersectionObservation() const; |
+ bool hasObservationFor(IntersectionObserver&) const; |
+ void addObservation(IntersectionObservation&); |
+ void removeObservation(IntersectionObserver&); |
+ void activateValidIntersectionObservers(Element&); |
+ void deactivateAllIntersectionObservers(Element&); |
+ |
+#if !ENABLE(OILPAN) |
+ void dispose(); |
+#endif |
+ |
+ WeakPtrWillBeRawPtr<Element> createWeakPtr(Element*); |
+ |
+private: |
+ // IntersectionObservers for which the Element owning this data is root. |
+ HeapHashSet<WeakMember<IntersectionObserver>> m_intersectionObservers; |
+ // IntersectionObservations for which the Element owning this data is target. |
+ HeapHashMap<Member<IntersectionObserver>, Member<IntersectionObservation>> m_intersectionObservations; |
haraken
2016/01/02 13:47:40
I think this hash map is key for getting rid of ch
szager1
2016/01/02 19:18:34
I don't understand this comment. How does this ad
haraken
2016/01/03 16:34:20
Yeah, I was confused. You're right.
This may not
szager1
2016/01/04 03:53:04
IntersectionObserver::observe() calls into m_inter
|
+ |
+#if !ENABLE(OILPAN) |
+ OwnPtr<WeakPtrFactory<Element>> m_weakPointerFactory; |
+#endif |
+}; |
+ |
+} // namespace blink |
+ |
+#endif // ElementIntersectionObserverData_h |