1/*
2 * Copyright (C) 2011 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef MeterShadowElement_h
32#define MeterShadowElement_h
33
34#if ENABLE(METER_ELEMENT)
35#include "HTMLDivElement.h"
36#include <wtf/Forward.h>
37
38namespace WebCore {
39
40class HTMLMeterElement;
41class RenderMeter;
42
43class MeterShadowElement : public HTMLDivElement {
44public:
45    MeterShadowElement(Document*);
46    HTMLMeterElement* meterElement() const;
47
48private:
49    virtual bool rendererIsNeeded(const NodeRenderingContext&);
50};
51
52class MeterInnerElement FINAL : public MeterShadowElement {
53public:
54    MeterInnerElement(Document*);
55    static PassRefPtr<MeterInnerElement> create(Document*);
56
57private:
58    virtual bool rendererIsNeeded(const NodeRenderingContext&) OVERRIDE;
59    virtual RenderObject* createRenderer(RenderArena*, RenderStyle*) OVERRIDE;
60};
61
62inline PassRefPtr<MeterInnerElement> MeterInnerElement::create(Document* document)
63{
64    return adoptRef(new MeterInnerElement(document));
65}
66
67class MeterBarElement FINAL : public MeterShadowElement {
68public:
69    MeterBarElement(Document* document)
70        : MeterShadowElement(document)
71    {
72        DEFINE_STATIC_LOCAL(AtomicString, pseudoId, ("-webkit-meter-bar", AtomicString::ConstructFromLiteral));
73        setPseudo(pseudoId);
74    }
75
76    static PassRefPtr<MeterBarElement> create(Document*);
77};
78
79inline PassRefPtr<MeterBarElement> MeterBarElement::create(Document* document)
80{
81    return adoptRef(new MeterBarElement(document));
82}
83
84class MeterValueElement FINAL : public MeterShadowElement {
85public:
86    MeterValueElement(Document* document)
87        : MeterShadowElement(document)
88    {
89        updatePseudo();
90    }
91
92    static PassRefPtr<MeterValueElement> create(Document*);
93    void setWidthPercentage(double);
94    void updatePseudo() { setPseudo(valuePseudoId()); }
95
96private:
97    const AtomicString& valuePseudoId() const;
98};
99
100inline PassRefPtr<MeterValueElement> MeterValueElement::create(Document* document)
101{
102    return adoptRef(new MeterValueElement(document));
103}
104
105}
106#endif // ENABLE(METER_ELEMENT)
107#endif // MeterShadowElement_h
108