MeterShadowElement.cpp   [plain text]

/*
 * Copyright (C) 2011 Google Inc. All rights reserved.
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#include "config.h"
#if ENABLE(METER_ELEMENT)
#include "MeterShadowElement.h"

#include "CSSPropertyNames.h"
#include "HTMLMeterElement.h"
#include "HTMLNames.h"
#include "RenderMeter.h"
#include "RenderTheme.h"
#include "ShadowRoot.h"
#include "StylePropertySet.h"

namespace WebCore {

using namespace HTMLNames;

MeterShadowElement::MeterShadowElement(Document* document) 
    : HTMLDivElement(HTMLNames::divTag, document)
{
}

HTMLMeterElement* MeterShadowElement::meterElement() const
{
    return toHTMLMeterElement(shadowHost());
}

bool MeterShadowElement::rendererIsNeeded(const NodeRenderingContext& context)
{
    RenderObject* render = meterElement()->renderer();
    return render && !render->theme()->supportsMeter(render->style()->appearance()) && HTMLDivElement::rendererIsNeeded(context);
}

MeterInnerElement::MeterInnerElement(Document* document)
    : MeterShadowElement(document)
{
    DEFINE_STATIC_LOCAL(AtomicString, pseudoId, ("-webkit-meter-inner-element", AtomicString::ConstructFromLiteral));
    setPseudo(pseudoId);
}

bool MeterInnerElement::rendererIsNeeded(const NodeRenderingContext& context)
{
    if (meterElement()->hasAuthorShadowRoot())
        return HTMLDivElement::rendererIsNeeded(context);

    RenderObject* render = meterElement()->renderer();
    return render && !render->theme()->supportsMeter(render->style()->appearance()) && HTMLDivElement::rendererIsNeeded(context);
}

RenderObject* MeterInnerElement::createRenderer(RenderArena* arena, RenderStyle*)
{
    return new (arena) RenderMeter(this);
}

const AtomicString& MeterValueElement::valuePseudoId() const
{
    DEFINE_STATIC_LOCAL(AtomicString, optimumPseudoId, ("-webkit-meter-optimum-value", AtomicString::ConstructFromLiteral));
    DEFINE_STATIC_LOCAL(AtomicString, suboptimumPseudoId, ("-webkit-meter-suboptimum-value", AtomicString::ConstructFromLiteral));
    DEFINE_STATIC_LOCAL(AtomicString, evenLessGoodPseudoId, ("-webkit-meter-even-less-good-value", AtomicString::ConstructFromLiteral));

    HTMLMeterElement* meter = meterElement();
    if (!meter)
        return optimumPseudoId;

    switch (meter->gaugeRegion()) {
    case HTMLMeterElement::GaugeRegionOptimum:
        return optimumPseudoId;
    case HTMLMeterElement::GaugeRegionSuboptimal:
        return suboptimumPseudoId;
    case HTMLMeterElement::GaugeRegionEvenLessGood:
        return evenLessGoodPseudoId;
    default:
        ASSERT_NOT_REACHED();
        return optimumPseudoId;
    }
}

void MeterValueElement::setWidthPercentage(double width)
{
    setInlineStyleProperty(CSSPropertyWidth, width, CSSPrimitiveValue::CSS_PERCENTAGE);
}

}

#endif