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#include "config.h"
32
33#include "core/html/shadow/MeterShadowElement.h"
34
35#include "core/CSSPropertyNames.h"
36#include "core/HTMLNames.h"
37#include "core/html/HTMLMeterElement.h"
38#include "core/rendering/RenderMeter.h"
39#include "core/rendering/RenderTheme.h"
40
41namespace blink {
42
43using namespace HTMLNames;
44
45inline MeterShadowElement::MeterShadowElement(Document& document)
46    : HTMLDivElement(document)
47{
48}
49
50HTMLMeterElement* MeterShadowElement::meterElement() const
51{
52    return toHTMLMeterElement(shadowHost());
53}
54
55bool MeterShadowElement::rendererIsNeeded(const RenderStyle& style)
56{
57    RenderObject* renderer = meterElement()->renderer();
58    return renderer && !RenderTheme::theme().supportsMeter(renderer->style()->appearance()) && HTMLDivElement::rendererIsNeeded(style);
59}
60
61inline MeterInnerElement::MeterInnerElement(Document& document)
62    : MeterShadowElement(document)
63{
64}
65
66PassRefPtrWillBeRawPtr<MeterInnerElement> MeterInnerElement::create(Document& document)
67{
68    RefPtrWillBeRawPtr<MeterInnerElement> element = adoptRefWillBeNoop(new MeterInnerElement(document));
69    element->setShadowPseudoId(AtomicString("-webkit-meter-inner-element", AtomicString::ConstructFromLiteral));
70    return element.release();
71}
72
73bool MeterInnerElement::rendererIsNeeded(const RenderStyle& style)
74{
75    if (meterElement()->hasAuthorShadowRoot())
76        return HTMLDivElement::rendererIsNeeded(style);
77
78    RenderObject* renderer = meterElement()->renderer();
79    return renderer && !RenderTheme::theme().supportsMeter(renderer->style()->appearance()) && HTMLDivElement::rendererIsNeeded(style);
80}
81
82RenderObject* MeterInnerElement::createRenderer(RenderStyle*)
83{
84    return new RenderMeter(this);
85}
86
87inline MeterBarElement::MeterBarElement(Document& document)
88    : MeterShadowElement(document)
89{
90}
91
92PassRefPtrWillBeRawPtr<MeterBarElement> MeterBarElement::create(Document& document)
93{
94    RefPtrWillBeRawPtr<MeterBarElement> element = adoptRefWillBeNoop(new MeterBarElement(document));
95    element->setShadowPseudoId(AtomicString("-webkit-meter-bar", AtomicString::ConstructFromLiteral));
96    return element.release();
97}
98
99inline MeterValueElement::MeterValueElement(Document& document)
100    : MeterShadowElement(document)
101{
102}
103
104PassRefPtrWillBeRawPtr<MeterValueElement> MeterValueElement::create(Document& document)
105{
106    RefPtrWillBeRawPtr<MeterValueElement> element = adoptRefWillBeNoop(new MeterValueElement(document));
107    element->updatePseudo();
108    return element.release();
109}
110
111const AtomicString& MeterValueElement::valuePseudoId() const
112{
113    DEFINE_STATIC_LOCAL(AtomicString, optimumPseudoId, ("-webkit-meter-optimum-value", AtomicString::ConstructFromLiteral));
114    DEFINE_STATIC_LOCAL(AtomicString, suboptimumPseudoId, ("-webkit-meter-suboptimum-value", AtomicString::ConstructFromLiteral));
115    DEFINE_STATIC_LOCAL(AtomicString, evenLessGoodPseudoId, ("-webkit-meter-even-less-good-value", AtomicString::ConstructFromLiteral));
116
117    HTMLMeterElement* meter = meterElement();
118    if (!meter)
119        return optimumPseudoId;
120
121    switch (meter->gaugeRegion()) {
122    case HTMLMeterElement::GaugeRegionOptimum:
123        return optimumPseudoId;
124    case HTMLMeterElement::GaugeRegionSuboptimal:
125        return suboptimumPseudoId;
126    case HTMLMeterElement::GaugeRegionEvenLessGood:
127        return evenLessGoodPseudoId;
128    default:
129        ASSERT_NOT_REACHED();
130        return optimumPseudoId;
131    }
132}
133
134void MeterValueElement::setWidthPercentage(double width)
135{
136    setInlineStyleProperty(CSSPropertyWidth, width, CSSPrimitiveValue::CSS_PERCENTAGE);
137}
138
139}
140