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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 | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef ViewportScrollCallback_h | |
6 #define ViewportScrollCallback_h | |
7 | |
8 #include "core/page/scrolling/ScrollStateCallback.h" | |
9 #include "platform/heap/Handle.h" | |
10 #include "platform/scroll/ScrollTypes.h" | |
11 | |
12 namespace blink { | |
13 | |
14 class Document; | |
15 class FloatSize; | |
16 class FrameHost; | |
17 class Element; | |
18 class ScrollableArea; | |
19 class ScrollState; | |
20 | |
21 class ViewportScrollCallback : public ScrollStateCallback { | |
22 public: | |
23 ViewportScrollCallback(Document&, FrameHost&); | |
24 ~ViewportScrollCallback(); | |
25 | |
26 void handleEvent(ScrollState*) override; | |
27 | |
28 DECLARE_VIRTUAL_TRACE(); | |
29 | |
30 private: | |
31 bool shouldScrollTopControls(const FloatSize&, ScrollGranularity) const; | |
32 ScrollableArea* getRootFrameViewport() const; | |
33 | |
34 Member<Document> m_document; | |
tdresser
2016/04/12 13:59:15
Should these be Members or WeakMembers?
bokan
2016/04/12 15:13:53
WeakMembers. Changed and added corresponding null-
| |
35 Member<FrameHost> m_frameHost; | |
36 | |
37 }; | |
38 | |
39 } // namespace blink | |
40 | |
41 #endif // ViewportScrollCallback_h | |
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