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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  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009 Apple Inc. All rights reserved.
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  *
     21  */
     22 
     23 #ifndef RenderListItem_h
     24 #define RenderListItem_h
     25 
     26 #include "RenderBlock.h"
     27 
     28 namespace WebCore {
     29 
     30 class RenderListMarker;
     31 
     32 class RenderListItem : public RenderBlock {
     33 public:
     34     explicit RenderListItem(Node*);
     35 
     36     int value() const { if (!m_isValueUpToDate) updateValueNow(); return m_value; }
     37     void updateValue();
     38 
     39     bool hasExplicitValue() const { return m_hasExplicitValue; }
     40     int explicitValue() const { return m_explicitValue; }
     41     void setExplicitValue(int value);
     42     void clearExplicitValue();
     43 
     44     void setNotInList(bool notInList) { m_notInList = notInList; }
     45     bool notInList() const { return m_notInList; }
     46 
     47     const String& markerText() const;
     48     String markerTextWithSuffix() const;
     49 
     50     void updateListMarkerNumbers();
     51 
     52 private:
     53     virtual const char* renderName() const { return "RenderListItem"; }
     54 
     55     virtual bool isListItem() const { return true; }
     56 
     57     virtual void destroy();
     58 
     59     virtual bool isEmpty() const;
     60     virtual void paint(PaintInfo&, int tx, int ty);
     61 
     62     virtual void layout();
     63     virtual void computePreferredLogicalWidths();
     64 
     65     void positionListMarker();
     66 
     67     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
     68 
     69     virtual bool requiresForcedStyleRecalcPropagation() const { return true; }
     70 
     71     virtual void addOverflowFromChildren();
     72 
     73     void updateMarkerLocation();
     74     inline int calcValue() const;
     75     void updateValueNow() const;
     76     void explicitValueChanged();
     77 
     78     RenderListMarker* m_marker;
     79     int m_explicitValue;
     80     mutable int m_value;
     81 
     82     bool m_hasExplicitValue : 1;
     83     mutable bool m_isValueUpToDate : 1;
     84     bool m_notInList : 1;
     85 };
     86 
     87 inline RenderListItem* toRenderListItem(RenderObject* object)
     88 {
     89     ASSERT(!object || object->isListItem());
     90     return static_cast<RenderListItem*>(object);
     91 }
     92 
     93 // This will catch anyone doing an unnecessary cast.
     94 void toRenderListItem(const RenderListItem*);
     95 
     96 } // namespace WebCore
     97 
     98 #endif // RenderListItem_h
     99