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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  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
      6  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
      7  * Copyright (C) 2011 Google Inc. All rights reserved.
      8  *
      9  * This library is free software; you can redistribute it and/or
     10  * modify it under the terms of the GNU Library General Public
     11  * License as published by the Free Software Foundation; either
     12  * version 2 of the License, or (at your option) any later version.
     13  *
     14  * This library is distributed in the hope that it will be useful,
     15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     17  * Library General Public License for more details.
     18  *
     19  * You should have received a copy of the GNU Library General Public License
     20  * along with this library; see the file COPYING.LIB.  If not, write to
     21  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     22  * Boston, MA 02110-1301, USA.
     23  *
     24  */
     25 
     26 #ifndef NodeRenderingContext_h
     27 #define NodeRenderingContext_h
     28 
     29 #include "core/dom/NodeRenderingTraversal.h"
     30 
     31 #include "wtf/RefPtr.h"
     32 
     33 namespace WebCore {
     34 
     35 class ContainerNode;
     36 class Node;
     37 class RenderNamedFlowThread;
     38 class RenderObject;
     39 class RenderStyle;
     40 
     41 class NodeRenderingContext {
     42 public:
     43     explicit NodeRenderingContext(Node* node, RenderStyle* style = 0)
     44         : m_node(node)
     45         , m_renderingParent(0)
     46         , m_style(style)
     47         , m_parentFlowRenderer(0)
     48     {
     49         m_renderingParent = NodeRenderingTraversal::parent(node, &m_parentDetails);
     50     }
     51 
     52     void createRendererForTextIfNeeded();
     53     void createRendererForElementIfNeeded();
     54 
     55     Node* node() const { return m_node; }
     56     RenderObject* parentRenderer() const;
     57     RenderObject* nextRenderer() const;
     58     RenderObject* previousRenderer() const;
     59 
     60     const RenderStyle* style() const { return m_style.get(); }
     61 
     62 private:
     63     bool shouldCreateRenderer() const;
     64     void moveToFlowThreadIfNeeded();
     65     bool elementInsideRegionNeedsRenderer();
     66 
     67     Node* m_node;
     68     ContainerNode* m_renderingParent;
     69     NodeRenderingTraversal::ParentDetails m_parentDetails;
     70     RefPtr<RenderStyle> m_style;
     71     RenderNamedFlowThread* m_parentFlowRenderer;
     72 };
     73 
     74 } // namespace WebCore
     75 
     76 #endif
     77