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#if ENABLE(METER_ELEMENT)
25#include "LabelableElement.h"
26
27namespace WebCore {
28
29class MeterValueElement;
30class RenderMeter;
31
32class HTMLMeterElement FINAL : public LabelableElement {
33public:
34    static PassRefPtr<HTMLMeterElement> create(const QualifiedName&, Document*);
35
36    enum GaugeRegion {
37        GaugeRegionOptimum,
38        GaugeRegionSuboptimal,
39        GaugeRegionEvenLessGood
40    };
41
42    double min() const;
43    void setMin(double, ExceptionCode&);
44
45    double max() const;
46    void setMax(double, ExceptionCode&);
47
48    double value() const;
49    void setValue(double, ExceptionCode&);
50
51    double low() const;
52    void setLow(double, ExceptionCode&);
53
54    double high() const;
55    void setHigh(double, ExceptionCode&);
56
57    double optimum() const;
58    void setOptimum(double, ExceptionCode&);
59
60    double valueRatio() const;
61    GaugeRegion gaugeRegion() const;
62
63    bool canContainRangeEndPoint() const { return false; }
64
65private:
66    HTMLMeterElement(const QualifiedName&, Document*);
67    virtual ~HTMLMeterElement();
68
69    virtual bool areAuthorShadowsAllowed() const OVERRIDE { return false; }
70    RenderMeter* renderMeter() const;
71
72    virtual bool supportLabels() const OVERRIDE { return true; }
73
74    virtual bool recalcWillValidate() const { return false; }
75    virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
76    virtual bool childShouldCreateRenderer(const NodeRenderingContext&) const OVERRIDE;
77    virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
78
79    void didElementStateChange();
80    virtual void didAddUserAgentShadowRoot(ShadowRoot*) OVERRIDE;
81
82    RefPtr<MeterValueElement> m_value;
83};
84
85inline bool isHTMLMeterElement(Node* node)
86{
87    return node->hasTagName(HTMLNames::meterTag);
88}
89
90inline HTMLMeterElement* toHTMLMeterElement(Node* node)
91{
92    ASSERT_WITH_SECURITY_IMPLICATION(!node || isHTMLMeterElement(node));
93    return static_cast<HTMLMeterElement*>(node);
94}
95
96} // namespace
97
98#endif
99#endif
100