TimeInputType.cpp   [plain text]


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#include "config.h"
#if ENABLE(INPUT_TYPE_TIME)
#include "TimeInputType.h"

#include "DateComponents.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "InputTypeNames.h"
#include <wtf/CurrentTime.h>
#include <wtf/DateMath.h>
#include <wtf/MathExtras.h>
#include <wtf/PassOwnPtr.h>

namespace WebCore {

using namespace HTMLNames;

static const int timeDefaultStep = 60;
static const int timeDefaultStepBase = 0;
static const int timeStepScaleFactor = 1000;

TimeInputType::TimeInputType(HTMLInputElement*  element)
    : BaseTimeInputType(element)
{
}

PassOwnPtr<InputType> TimeInputType::create(HTMLInputElement* element)
{
    return adoptPtr(new TimeInputType(element));
}

void TimeInputType::attach()
{
    observeFeatureIfVisible(FeatureObserver::InputTypeTime);
}

const AtomicString& TimeInputType::formControlType() const
{
    return InputTypeNames::time();
}

DateComponents::Type TimeInputType::dateType() const
{
    return DateComponents::Time;
}

Decimal TimeInputType::defaultValueForStepUp() const
{
    double current = currentTimeMS();
    double utcOffset = calculateUTCOffset();
    double dstOffset = calculateDSTOffset(current, utcOffset);
    int offset = static_cast<int>((utcOffset + dstOffset) / msPerMinute);
    current += offset * msPerMinute;

    DateComponents date;
    date.setMillisecondsSinceMidnight(current);
    double milliseconds = date.millisecondsSinceEpoch();
    ASSERT(std::isfinite(milliseconds));
    return Decimal::fromDouble(milliseconds);
}

StepRange TimeInputType::createStepRange(AnyStepHandling anyStepHandling) const
{
    DEFINE_STATIC_LOCAL(const StepRange::StepDescription, stepDescription, (timeDefaultStep, timeDefaultStepBase, timeStepScaleFactor, StepRange::ScaledStepValueShouldBeInteger));

    const Decimal stepBase = parseToNumber(element()->fastGetAttribute(minAttr), 0);
    const Decimal minimum = parseToNumber(element()->fastGetAttribute(minAttr), Decimal::fromDouble(DateComponents::minimumTime()));
    const Decimal maximum = parseToNumber(element()->fastGetAttribute(maxAttr), Decimal::fromDouble(DateComponents::maximumTime()));
    const Decimal step = StepRange::parseStep(anyStepHandling, stepDescription, element()->fastGetAttribute(stepAttr));
    return StepRange(stepBase, minimum, maximum, step, stepDescription);
}

bool TimeInputType::parseToDateComponentsInternal(const UChar* characters, unsigned length, DateComponents* out) const
{
    ASSERT(out);
    unsigned end;
    return out->parseTime(characters, length, 0, end) && end == length;
}

bool TimeInputType::setMillisecondToDateComponents(double value, DateComponents* date) const
{
    ASSERT(date);
    return date->setMillisecondsSinceMidnight(value);
}

bool TimeInputType::isTimeField() const
{
    return true;
}

} // namespace WebCore

#endif