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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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| 172 // | 172 // |
| 173 // | 173 // |
| 174 // ***** LIFETIME ***** | 174 // ***** LIFETIME ***** |
| 175 // | 175 // |
| 176 // LayoutObjects are fully owned by their associated DOM node. In other words, | 176 // LayoutObjects are fully owned by their associated DOM node. In other words, |
| 177 // it's the DOM node's responsibility to free its LayoutObject, this is why | 177 // it's the DOM node's responsibility to free its LayoutObject, this is why |
| 178 // LayoutObjects are not and SHOULD NOT be RefCounted. | 178 // LayoutObjects are not and SHOULD NOT be RefCounted. |
| 179 // | 179 // |
| 180 // LayoutObjects are created during the DOM attachment. This phase computes | 180 // LayoutObjects are created during the DOM attachment. This phase computes |
| 181 // the style and create the LayoutObject associated with the Node (see | 181 // the style and create the LayoutObject associated with the Node (see |
| 182 // Node::attach). LayoutObjects are destructed during detachment (see | 182 // Node::attachLayoutTree). LayoutObjects are destructed during detachment (see |
| 183 // Node::detach), which can happen when the DOM node is removed from the | 183 // Node::detach), which can happen when the DOM node is removed from the |
| 184 // DOM tree, during page tear down or when the style is changed to contain | 184 // DOM tree, during page tear down or when the style is changed to contain |
| 185 // 'display: none'. | 185 // 'display: none'. |
| 186 // | 186 // |
| 187 // Anonymous LayoutObjects are owned by their enclosing DOM node. This means | 187 // Anonymous LayoutObjects are owned by their enclosing DOM node. This means |
| 188 // that if the DOM node is detached, it has to destroy any anonymous | 188 // that if the DOM node is detached, it has to destroy any anonymous |
| 189 // descendants. This is done in LayoutObject::destroy(). | 189 // descendants. This is done in LayoutObject::destroy(). |
| 190 // | 190 // |
| 191 // Note that for correctness, destroy() is expected to clean any anonymous | 191 // Note that for correctness, destroy() is expected to clean any anonymous |
| 192 // wrappers as sequences of insertion / removal could make them visible to | 192 // wrappers as sequences of insertion / removal could make them visible to |
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| 2177 void showTree(const blink::LayoutObject*); | 2177 void showTree(const blink::LayoutObject*); |
| 2178 void showLineTree(const blink::LayoutObject*); | 2178 void showLineTree(const blink::LayoutObject*); |
| 2179 void showLayoutTree(const blink::LayoutObject* object1); | 2179 void showLayoutTree(const blink::LayoutObject* object1); |
| 2180 // We don't make object2 an optional parameter so that showLayoutTree | 2180 // We don't make object2 an optional parameter so that showLayoutTree |
| 2181 // can be called from gdb easily. | 2181 // can be called from gdb easily. |
| 2182 void showLayoutTree(const blink::LayoutObject* object1, const blink::LayoutObjec
t* object2); | 2182 void showLayoutTree(const blink::LayoutObject* object1, const blink::LayoutObjec
t* object2); |
| 2183 | 2183 |
| 2184 #endif | 2184 #endif |
| 2185 | 2185 |
| 2186 #endif // LayoutObject_h | 2186 #endif // LayoutObject_h |
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