1/*
2 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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 HTMLMeterElement_h
22#define HTMLMeterElement_h
23
24#include "core/html/LabelableElement.h"
25
26namespace blink {
27
28class ExceptionState;
29class MeterValueElement;
30class RenderMeter;
31
32class HTMLMeterElement FINAL : public LabelableElement {
33    DEFINE_WRAPPERTYPEINFO();
34public:
35    static PassRefPtrWillBeRawPtr<HTMLMeterElement> create(Document&);
36
37    enum GaugeRegion {
38        GaugeRegionOptimum,
39        GaugeRegionSuboptimal,
40        GaugeRegionEvenLessGood
41    };
42
43    double value() const;
44    void setValue(double);
45
46    double min() const;
47    void setMin(double);
48
49    double max() const;
50    void setMax(double);
51
52    double low() const;
53    void setLow(double);
54
55    double high() const;
56    void setHigh(double);
57
58    double optimum() const;
59    void setOptimum(double);
60
61    double valueRatio() const;
62    GaugeRegion gaugeRegion() const;
63
64    virtual bool canContainRangeEndPoint() const OVERRIDE { return false; }
65
66    virtual void trace(Visitor*) OVERRIDE;
67
68private:
69    explicit HTMLMeterElement(Document&);
70    virtual ~HTMLMeterElement();
71
72    virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; }
73    RenderMeter* renderMeter() const;
74
75    virtual bool supportLabels() const OVERRIDE { return true; }
76
77    virtual RenderObject* createRenderer(RenderStyle*) OVERRIDE;
78    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
79
80    void didElementStateChange();
81    virtual void didAddUserAgentShadowRoot(ShadowRoot&) OVERRIDE;
82
83    RefPtrWillBeMember<MeterValueElement> m_value;
84};
85
86} // namespace blink
87
88#endif // HTMLMeterElement_h
89