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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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163 virtual const char* renderName() const = 0; | 163 virtual const char* renderName() const = 0; |
164 | 164 |
165 String debugName() const; | 165 String debugName() const; |
166 | 166 |
167 RenderObject* parent() const { return m_parent; } | 167 RenderObject* parent() const { return m_parent; } |
168 bool isDescendantOf(const RenderObject*) const; | 168 bool isDescendantOf(const RenderObject*) const; |
169 | 169 |
170 RenderObject* previousSibling() const { return m_previous; } | 170 RenderObject* previousSibling() const { return m_previous; } |
171 RenderObject* nextSibling() const { return m_next; } | 171 RenderObject* nextSibling() const { return m_next; } |
172 | 172 |
173 // FIXME: These should be renamed slowFirstChild, slowLastChild, etc. | 173 RenderObject* slowFirstChild() const |
174 // to discourage their use. The virtualChildren() call inside these | |
175 // can be slow for hot code paths. | |
176 // Currently, some subclasses like RenderBlock, override these NON-virtual | |
177 // functions to make these fast when we already have a more specific pointer
type. | |
178 RenderObject* firstChild() const | |
179 { | 174 { |
180 if (const RenderObjectChildList* children = virtualChildren()) | 175 if (const RenderObjectChildList* children = virtualChildren()) |
181 return children->firstChild(); | 176 return children->firstChild(); |
182 return 0; | 177 return 0; |
183 } | 178 } |
184 RenderObject* lastChild() const | 179 RenderObject* slowLastChild() const |
185 { | 180 { |
186 if (const RenderObjectChildList* children = virtualChildren()) | 181 if (const RenderObjectChildList* children = virtualChildren()) |
187 return children->lastChild(); | 182 return children->lastChild(); |
188 return 0; | 183 return 0; |
189 } | 184 } |
190 | 185 |
191 virtual RenderObjectChildList* virtualChildren() { return 0; } | 186 virtual RenderObjectChildList* virtualChildren() { return 0; } |
192 virtual const RenderObjectChildList* virtualChildren() const { return 0; } | 187 virtual const RenderObjectChildList* virtualChildren() const { return 0; } |
193 | 188 |
194 RenderObject* nextInPreOrder() const; | 189 RenderObject* nextInPreOrder() const; |
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1478 void showTree(const WebCore::RenderObject*); | 1473 void showTree(const WebCore::RenderObject*); |
1479 void showLineTree(const WebCore::RenderObject*); | 1474 void showLineTree(const WebCore::RenderObject*); |
1480 void showRenderTree(const WebCore::RenderObject* object1); | 1475 void showRenderTree(const WebCore::RenderObject* object1); |
1481 // We don't make object2 an optional parameter so that showRenderTree | 1476 // We don't make object2 an optional parameter so that showRenderTree |
1482 // can be called from gdb easily. | 1477 // can be called from gdb easily. |
1483 void showRenderTree(const WebCore::RenderObject* object1, const WebCore::RenderO
bject* object2); | 1478 void showRenderTree(const WebCore::RenderObject* object1, const WebCore::RenderO
bject* object2); |
1484 | 1479 |
1485 #endif | 1480 #endif |
1486 | 1481 |
1487 #endif // RenderObject_h | 1482 #endif // RenderObject_h |
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