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 "core/rendering/RenderBlockFlow.h"
27
28namespace blink {
29
30class HTMLOListElement;
31class RenderListMarker;
32
33class RenderListItem FINAL : public RenderBlockFlow {
34public:
35    explicit RenderListItem(Element*);
36    virtual void trace(Visitor*) OVERRIDE;
37
38    int value() const { if (!m_isValueUpToDate) updateValueNow(); return m_value; }
39    void updateValue();
40
41    bool hasExplicitValue() const { return m_hasExplicitValue; }
42    int explicitValue() const { return m_explicitValue; }
43    void setExplicitValue(int value);
44    void clearExplicitValue();
45
46    void setNotInList(bool);
47    bool notInList() const { return m_notInList; }
48
49    const String& markerText() const;
50
51    void updateListMarkerNumbers();
52
53    static void updateItemValuesForOrderedList(const HTMLOListElement*);
54    static unsigned itemCountForOrderedList(const HTMLOListElement*);
55
56    bool isEmpty() const;
57
58private:
59    virtual const char* renderName() const OVERRIDE { return "RenderListItem"; }
60
61    virtual bool isListItem() const OVERRIDE { return true; }
62
63    virtual void willBeDestroyed() OVERRIDE;
64
65    virtual void insertedIntoTree() OVERRIDE;
66    virtual void willBeRemovedFromTree() OVERRIDE;
67
68    virtual void paint(PaintInfo&, const LayoutPoint&) OVERRIDE;
69
70    virtual void layout() OVERRIDE;
71
72    // Returns true if we re-attached and updated the location of the marker.
73    bool updateMarkerLocation();
74    void updateMarkerLocationAndInvalidateWidth();
75
76    void positionListMarker();
77
78    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE;
79
80    virtual void addOverflowFromChildren() OVERRIDE;
81
82    inline int calcValue() const;
83    void updateValueNow() const;
84    void explicitValueChanged();
85
86    int m_explicitValue;
87    RawPtrWillBeMember<RenderListMarker> m_marker;
88    mutable int m_value;
89
90    bool m_hasExplicitValue : 1;
91    mutable bool m_isValueUpToDate : 1;
92    bool m_notInList : 1;
93};
94
95DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderListItem, isListItem());
96
97} // namespace blink
98
99#endif // RenderListItem_h
100