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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      4  *           (C) 2001 Dirk Mueller (mueller (at) kde.org)
      5  *           (C) 2008 David Smith (catfish.man (at) gmail.com)
      6  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
      7  *
      8  * This library is free software; you can redistribute it and/or
      9  * modify it under the terms of the GNU Library General Public
     10  * License as published by the Free Software Foundation; either
     11  * version 2 of the License, or (at your option) any later version.
     12  *
     13  * This library is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16  * Library General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU Library General Public License
     19  * along with this library; see the file COPYING.LIB.  If not, write to
     20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     21  * Boston, MA 02110-1301, USA.
     22  *
     23  */
     24 
     25 #ifndef NodeRenderStyle_h
     26 #define NodeRenderStyle_h
     27 
     28 #include "core/dom/Node.h"
     29 #include "core/dom/NodeRenderingTraversal.h"
     30 #include "core/html/HTMLOptGroupElement.h"
     31 #include "core/rendering/RenderObject.h"
     32 #include "core/rendering/style/RenderStyle.h"
     33 
     34 namespace WebCore {
     35 
     36 inline RenderStyle* Node::renderStyle() const
     37 {
     38     if (RenderObject* renderer = this->renderer())
     39         return renderer->style();
     40     // <option> and <optgroup> can be styled even though they never get renderers,
     41     // so they store their style internally and return it through nonRendererStyle().
     42     // We check here explicitly to avoid the virtual call in the common case.
     43     if (isHTMLOptGroupElement(*this) || isHTMLOptionElement(this))
     44         return nonRendererStyle();
     45     return 0;
     46 }
     47 
     48 inline RenderStyle* Node::parentRenderStyle() const
     49 {
     50     ContainerNode* parent = NodeRenderingTraversal::parent(this);
     51     return parent ? parent->renderStyle() : 0;
     52 }
     53 
     54 }
     55 #endif
     56