root/Source/core/html/forms/MonthInputType.cpp

DEFINITIONS

1. create
2. countUsage
3. formControlType
4. valueAsDate
5. serializeWithMilliseconds
6. defaultValueForStepUp
7. createStepRange
8. parseToNumber
9. parseToDateComponentsInternal
10. setMillisecondToDateComponents
11. isMonthField
12. canSetSuggestedValue
13. formatDateTimeFieldsState
14. setupLayoutParameters
15. isValidFormat

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
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 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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#include "config.h"
#include "core/html/forms/MonthInputType.h"

#include "HTMLNames.h"
#include "InputTypeNames.h"
#include "core/html/HTMLInputElement.h"
#include "core/html/forms/DateTimeFieldsState.h"
#include "platform/DateComponents.h"
#include "platform/text/PlatformLocale.h"
#include "wtf/CurrentTime.h"
#include "wtf/DateMath.h"
#include "wtf/MathExtras.h"
#include "wtf/PassOwnPtr.h"
#include "wtf/text/WTFString.h"

namespace WebCore {

using namespace HTMLNames;

static const int monthDefaultStep = 1;
static const int monthDefaultStepBase = 0;
static const int monthStepScaleFactor = 1;

PassRefPtr<InputType> MonthInputType::create(HTMLInputElement& element)
{
    return adoptRef(new MonthInputType(element));
}

void MonthInputType::countUsage()
{
    countUsageIfVisible(UseCounter::InputTypeMonth);
}

const AtomicString& MonthInputType::formControlType() const
{
    return InputTypeNames::month;
}

double MonthInputType::valueAsDate() const
{
    DateComponents date;
    if (!parseToDateComponents(element().value(), &date))
        return DateComponents::invalidMilliseconds();
    double msec = date.millisecondsSinceEpoch();
    ASSERT(std::isfinite(msec));
    return msec;
}

String MonthInputType::serializeWithMilliseconds(double value) const
{
    DateComponents date;
    if (!date.setMillisecondsSinceEpochForMonth(value))
        return String();
    return serializeWithComponents(date);
}

Decimal MonthInputType::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.setMillisecondsSinceEpochForMonth(current);
    double months = date.monthsSinceEpoch();
    ASSERT(std::isfinite(months));
    return Decimal::fromDouble(months);
}

StepRange MonthInputType::createStepRange(AnyStepHandling anyStepHandling) const
{
    DEFINE_STATIC_LOCAL(const StepRange::StepDescription, stepDescription, (monthDefaultStep, monthDefaultStepBase, monthStepScaleFactor, StepRange::ParsedStepValueShouldBeInteger));

    return InputType::createStepRange(anyStepHandling, Decimal::fromDouble(monthDefaultStepBase), Decimal::fromDouble(DateComponents::minimumMonth()), Decimal::fromDouble(DateComponents::maximumMonth()), stepDescription);
}

Decimal MonthInputType::parseToNumber(const String& src, const Decimal& defaultValue) const
{
    DateComponents date;
    if (!parseToDateComponents(src, &date))
        return defaultValue;
    double months = date.monthsSinceEpoch();
    ASSERT(std::isfinite(months));
    return Decimal::fromDouble(months);
}

bool MonthInputType::parseToDateComponentsInternal(const String& string, DateComponents* out) const
{
    ASSERT(out);
    unsigned end;
    return out->parseMonth(string, 0, end) && end == string.length();
}

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

bool MonthInputType::isMonthField() const
{
    return true;
}

bool MonthInputType::canSetSuggestedValue()
{
    return true;
}

#if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
String MonthInputType::formatDateTimeFieldsState(const DateTimeFieldsState& dateTimeFieldsState) const
{
    if (!dateTimeFieldsState.hasMonth() || !dateTimeFieldsState.hasYear())
        return emptyString();
    return String::format("%04u-%02u", dateTimeFieldsState.year(), dateTimeFieldsState.month());
}

void MonthInputType::setupLayoutParameters(DateTimeEditElement::LayoutParameters& layoutParameters, const DateComponents& date) const
{
    layoutParameters.dateTimeFormat = layoutParameters.locale.monthFormat();
    layoutParameters.fallbackDateTimeFormat = "yyyy-MM";
    if (!parseToDateComponents(element().fastGetAttribute(minAttr), &layoutParameters.minimum))
        layoutParameters.minimum = DateComponents();
    if (!parseToDateComponents(element().fastGetAttribute(maxAttr), &layoutParameters.maximum))
        layoutParameters.maximum = DateComponents();
    layoutParameters.placeholderForMonth = "--";
    layoutParameters.placeholderForYear = "----";
}

bool MonthInputType::isValidFormat(bool hasYear, bool hasMonth, bool hasWeek, bool hasDay, bool hasAMPM, bool hasHour, bool hasMinute, bool hasSecond) const
{
    return hasYear && hasMonth;
}
#endif
} // namespace WebCore