third_party/WebKit/Source/core/page/scrolling/ChildViewportScrollCallback.cpp - Issue 2273163002: Cleanup and refactor RootScrollerController.

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Side by Side Diff: third_party/WebKit/Source/core/page/scrolling/ChildViewportScrollCallback.cpp

Issue 2273163002: Cleanup and refactor RootScrollerController. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Fixed class comment Created 4 years, 3 months ago

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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 #include "core/page/scrolling/ChildViewportScrollCallback.h"

6

7 #include "core/page/scrolling/ScrollState.h"

8 #include "platform/geometry/FloatSize.h"

9 #include "platform/scroll/ScrollTypes.h"

10 #include "platform/scroll/ScrollableArea.h"

11

12 namespace blink {

13

14 ChildViewportScrollCallback::ChildViewportScrollCallback()

15 {

16 }

17

18 ChildViewportScrollCallback::~ChildViewportScrollCallback()

19 {

20 }

21

22 DEFINE_TRACE(ChildViewportScrollCallback)

23 {

24 visitor->trace(m_scroller);

25 ViewportScrollCallback::trace(visitor);

26 }

27

28

29 void ChildViewportScrollCallback::handleEvent(ScrollState* state)

30 {

31 DCHECK(state);

32

33 if (!m_scroller)

34 return;

35

36 performNativeScroll(state, m_scroller);

37 }

38

39 void ChildViewportScrollCallback::setScroller(ScrollableArea* scroller)

40 {

41 m_scroller = scroller;

42 }

43

44 } // namespace blink

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