1/*
2 * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB.  If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 *
19 */
20
21#ifndef RenderSlider_h
22#define RenderSlider_h
23
24#include "RenderBlock.h"
25
26namespace WebCore {
27
28    class HTMLInputElement;
29    class MouseEvent;
30    class SliderThumbElement;
31
32    class RenderSlider : public RenderBlock {
33    public:
34        RenderSlider(HTMLInputElement*);
35        virtual ~RenderSlider();
36
37        bool inDragMode() const;
38        IntRect thumbRect();
39
40    private:
41        virtual const char* renderName() const { return "RenderSlider"; }
42        virtual bool isSlider() const { return true; }
43
44        virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const;
45        virtual void computePreferredLogicalWidths();
46        virtual void layout();
47
48        // FIXME: Eventually, the logic of manipulating slider thumb should move to
49        // SliderThumbElement and accessing shadowSliderThumb should not be necessary in this class.
50        SliderThumbElement* shadowSliderThumb() const;
51
52        virtual bool requiresForcedStyleRecalcPropagation() const { return true; }
53    };
54
55    inline RenderSlider* toRenderSlider(RenderObject* object)
56    {
57        ASSERT(!object || object->isSlider());
58        return static_cast<RenderSlider*>(object);
59    }
60
61    // This will catch anyone doing an unnecessary cast.
62    void toRenderSlider(const RenderSlider*);
63
64} // namespace WebCore
65
66#endif // RenderSlider_h
67