1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 *           (C) 1999 Antti Koivisto (koivisto@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
28namespace WebCore {
29
30class RenderListMarker;
31
32class RenderListItem : public RenderBlock {
33public:
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
52private:
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
87inline 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.
94void toRenderListItem(const RenderListItem*);
95
96} // namespace WebCore
97
98#endif // RenderListItem_h
99