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

DEFINITIONS

1. valueAsDate
2. setValueAsDate
3. valueAsDouble
4. setValueAsDouble
5. typeMismatchFor
6. typeMismatch
7. rangeOverflowText
8. rangeUnderflowText
9. defaultValueForStepUp
10. isSteppable
11. parseToNumber
12. parseToDateComponents
13. serialize
14. serializeWithComponents
15. serializeWithMilliseconds
16. localizeValue
17. visibleValue
18. sanitizeValue
19. supportsReadOnly
20. shouldRespectListAttribute
21. valueMissing
22. shouldShowFocusRingOnMouseFocus

/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 *
 * 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.
 *     * Neither the name of Google Inc. nor the names of its
 * 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
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "core/html/forms/BaseDateAndTimeInputType.h"

#include <limits>
#include "core/html/HTMLInputElement.h"
#include "platform/text/PlatformLocale.h"
#include "wtf/CurrentTime.h"
#include "wtf/DateMath.h"
#include "wtf/MathExtras.h"
#include "wtf/text/WTFString.h"

namespace WebCore {

using blink::WebLocalizedString;
using namespace HTMLNames;
using namespace std;

static const int msecPerMinute = 60 * 1000;
static const int msecPerSecond = 1000;

double BaseDateAndTimeInputType::valueAsDate() const
{
    return valueAsDouble();
}

void BaseDateAndTimeInputType::setValueAsDate(double value, ExceptionState&) const
{
    element().setValue(serializeWithMilliseconds(value));
}

double BaseDateAndTimeInputType::valueAsDouble() const
{
    const Decimal value = parseToNumber(element().value(), Decimal::nan());
    return value.isFinite() ? value.toDouble() : DateComponents::invalidMilliseconds();
}

void BaseDateAndTimeInputType::setValueAsDouble(double newValue, TextFieldEventBehavior eventBehavior, ExceptionState& exceptionState) const
{
    setValueAsDecimal(Decimal::fromDouble(newValue), eventBehavior, exceptionState);
}

bool BaseDateAndTimeInputType::typeMismatchFor(const String& value) const
{
    return !value.isEmpty() && !parseToDateComponents(value, 0);
}

bool BaseDateAndTimeInputType::typeMismatch() const
{
    return typeMismatchFor(element().value());
}

String BaseDateAndTimeInputType::rangeOverflowText(const Decimal& maximum) const
{
    return locale().queryString(WebLocalizedString::ValidationRangeOverflowDateTime, localizeValue(serialize(maximum)));
}

String BaseDateAndTimeInputType::rangeUnderflowText(const Decimal& minimum) const
{
    return locale().queryString(WebLocalizedString::ValidationRangeUnderflowDateTime, localizeValue(serialize(minimum)));
}

Decimal BaseDateAndTimeInputType::defaultValueForStepUp() const
{
    double ms = currentTimeMS();
    double utcOffset = calculateUTCOffset();
    double dstOffset = calculateDSTOffset(ms, utcOffset);
    int offset = static_cast<int>((utcOffset + dstOffset) / msPerMinute);
    return Decimal::fromDouble(ms + (offset * msPerMinute));
}

bool BaseDateAndTimeInputType::isSteppable() const
{
    return true;
}

Decimal BaseDateAndTimeInputType::parseToNumber(const String& source, const Decimal& defaultValue) const
{
    DateComponents date;
    if (!parseToDateComponents(source, &date))
        return defaultValue;
    double msec = date.millisecondsSinceEpoch();
    ASSERT(std::isfinite(msec));
    return Decimal::fromDouble(msec);
}

bool BaseDateAndTimeInputType::parseToDateComponents(const String& source, DateComponents* out) const
{
    if (source.isEmpty())
        return false;
    DateComponents ignoredResult;
    if (!out)
        out = &ignoredResult;
    return parseToDateComponentsInternal(source, out);
}

String BaseDateAndTimeInputType::serialize(const Decimal& value) const
{
    if (!value.isFinite())
        return String();
    DateComponents date;
    if (!setMillisecondToDateComponents(value.toDouble(), &date))
        return String();
    return serializeWithComponents(date);
}

String BaseDateAndTimeInputType::serializeWithComponents(const DateComponents& date) const
{
    Decimal step;
    if (!element().getAllowedValueStep(&step))
        return date.toString();
    if (step.remainder(msecPerMinute).isZero())
        return date.toString(DateComponents::None);
    if (step.remainder(msecPerSecond).isZero())
        return date.toString(DateComponents::Second);
    return date.toString(DateComponents::Millisecond);
}

String BaseDateAndTimeInputType::serializeWithMilliseconds(double value) const
{
    return serialize(Decimal::fromDouble(value));
}

String BaseDateAndTimeInputType::localizeValue(const String& proposedValue) const
{
    DateComponents date;
    if (!parseToDateComponents(proposedValue, &date))
        return proposedValue;

    String localized = element().locale().formatDateTime(date);
    return localized.isEmpty() ? proposedValue : localized;
}

String BaseDateAndTimeInputType::visibleValue() const
{
    return localizeValue(element().value());
}

String BaseDateAndTimeInputType::sanitizeValue(const String& proposedValue) const
{
    return typeMismatchFor(proposedValue) ? emptyString() : proposedValue;
}

bool BaseDateAndTimeInputType::supportsReadOnly() const
{
    return true;
}

bool BaseDateAndTimeInputType::shouldRespectListAttribute()
{
    return true;
}

bool BaseDateAndTimeInputType::valueMissing(const String& value) const
{
    return element().isRequired() && value.isEmpty();
}

bool BaseDateAndTimeInputType::shouldShowFocusRingOnMouseFocus() const
{
    return true;
}

} // namespace WebCore