Source/core/layout/LayoutObject.h - Issue 1330633003: Intersection Observer first draft

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Issue 1330633003: Intersection Observer first draft Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: Fix segfault on null input. Created 5 years, 3 months ago

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1 /*	1 /*

2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)	2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)

3 * (C) 2000 Antti Koivisto (koivisto@kde.org)	3 * (C) 2000 Antti Koivisto (koivisto@kde.org)

4 * (C) 2000 Dirk Mueller (mueller@kde.org)	4 * (C) 2000 Dirk Mueller (mueller@kde.org)

5 * (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)	5 * (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)

6 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All r ights reserved.	6 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All r ights reserved.

7 * Copyright (C) 2009 Google Inc. All rights reserved.	7 * Copyright (C) 2009 Google Inc. All rights reserved.

8 *	8 *

9 * This library is free software; you can redistribute it and/or	9 * This library is free software; you can redistribute it and/or

10 * modify it under the terms of the GNU Library General Public	10 * modify it under the terms of the GNU Library General Public

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1051 // to invalidate its descendants which are painted on the same backing. Howe ver, for	1051 // to invalidate its descendants which are painted on the same backing. Howe ver, for

1052 // an object (e.g. LayoutScrollbarPart, custom scroll corner, custom resizer ) which is	1052 // an object (e.g. LayoutScrollbarPart, custom scroll corner, custom resizer ) which is

1053 // not hooked up in the layout tree and not able to find its paint backing, it should	1053 // not hooked up in the layout tree and not able to find its paint backing, it should

1054 // let its owning layout object call the following function.	1054 // let its owning layout object call the following function.

1055 // FIXME: should we hook up scrollbar parts in the layout tree? crbug.com/48 4263.	1055 // FIXME: should we hook up scrollbar parts in the layout tree? crbug.com/48 4263.

1056 void invalidateDisplayItemClientForNonCompositingDescendantsOf(const LayoutO bject&) const;	1056 void invalidateDisplayItemClientForNonCompositingDescendantsOf(const LayoutO bject&) const;

1057	1057

1058 // Called before anonymousChild.setStyle(). Override to set custom styles fo r the child.	1058 // Called before anonymousChild.setStyle(). Override to set custom styles fo r the child.

1059 virtual void updateAnonymousChildStyle(const LayoutObject& anonymousChild, C omputedStyle& style) const { }	1059 virtual void updateAnonymousChildStyle(const LayoutObject& anonymousChild, C omputedStyle& style) const { }

1060	1060

	1061 bool hasIntersectionObserver() { return m_node && m_node->hasIntersectionOb server(); }

	1062

1061 protected:	1063 protected:

1062 enum LayoutObjectType {	1064 enum LayoutObjectType {

1063 LayoutObjectBr,	1065 LayoutObjectBr,

1064 LayoutObjectCanvas,	1066 LayoutObjectCanvas,

1065 LayoutObjectFieldset,	1067 LayoutObjectFieldset,

1066 LayoutObjectCounter,	1068 LayoutObjectCounter,

1067 LayoutObjectDetailsMarker,	1069 LayoutObjectDetailsMarker,

1068 LayoutObjectEmbeddedObject,	1070 LayoutObjectEmbeddedObject,

1069 LayoutObjectFileUploadControl,	1071 LayoutObjectFileUploadControl,

1070 LayoutObjectFrame,	1072 LayoutObjectFrame,

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1669 void showTree(const blink::LayoutObject*);	1671 void showTree(const blink::LayoutObject*);

1670 void showLineTree(const blink::LayoutObject*);	1672 void showLineTree(const blink::LayoutObject*);

1671 void showLayoutTree(const blink::LayoutObject* object1);	1673 void showLayoutTree(const blink::LayoutObject* object1);

1672 // We don't make object2 an optional parameter so that showLayoutTree	1674 // We don't make object2 an optional parameter so that showLayoutTree

1673 // can be called from gdb easily.	1675 // can be called from gdb easily.

1674 void showLayoutTree(const blink::LayoutObject* object1, const blink::LayoutObjec t* object2);	1676 void showLayoutTree(const blink::LayoutObject* object1, const blink::LayoutObjec t* object2);

1675	1677

1676 #endif	1678 #endif

1677	1679

1678 #endif // LayoutObject_h	1680 #endif // LayoutObject_h

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