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      1 /*
      2  * Copyright (C) 2010 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 #include "core/html/TimeInputType.h"
     33 
     34 #include "HTMLNames.h"
     35 #include "core/html/HTMLInputElement.h"
     36 #include "core/html/InputTypeNames.h"
     37 #include "core/platform/DateComponents.h"
     38 #include "wtf/CurrentTime.h"
     39 #include "wtf/DateMath.h"
     40 #include "wtf/MathExtras.h"
     41 #include "wtf/PassOwnPtr.h"
     42 
     43 #if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
     44 #include "core/html/DateTimeFieldsState.h"
     45 #include "core/platform/text/PlatformLocale.h"
     46 #include "wtf/text/WTFString.h"
     47 #endif
     48 
     49 namespace WebCore {
     50 
     51 using namespace HTMLNames;
     52 
     53 static const int timeDefaultStep = 60;
     54 static const int timeDefaultStepBase = 0;
     55 static const int timeStepScaleFactor = 1000;
     56 
     57 TimeInputType::TimeInputType(HTMLInputElement*  element)
     58     : BaseTimeInputType(element)
     59 {
     60 }
     61 
     62 PassOwnPtr<InputType> TimeInputType::create(HTMLInputElement* element)
     63 {
     64     return adoptPtr(new TimeInputType(element));
     65 }
     66 
     67 void TimeInputType::attach()
     68 {
     69     observeFeatureIfVisible(UseCounter::InputTypeTime);
     70 }
     71 
     72 const AtomicString& TimeInputType::formControlType() const
     73 {
     74     return InputTypeNames::time();
     75 }
     76 
     77 DateComponents::Type TimeInputType::dateType() const
     78 {
     79     return DateComponents::Time;
     80 }
     81 
     82 Decimal TimeInputType::defaultValueForStepUp() const
     83 {
     84     double current = currentTimeMS();
     85     double utcOffset = calculateUTCOffset();
     86     double dstOffset = calculateDSTOffset(current, utcOffset);
     87     int offset = static_cast<int>((utcOffset + dstOffset) / msPerMinute);
     88     current += offset * msPerMinute;
     89 
     90     DateComponents date;
     91     date.setMillisecondsSinceMidnight(current);
     92     double milliseconds = date.millisecondsSinceEpoch();
     93     ASSERT(std::isfinite(milliseconds));
     94     return Decimal::fromDouble(milliseconds);
     95 }
     96 
     97 StepRange TimeInputType::createStepRange(AnyStepHandling anyStepHandling) const
     98 {
     99     DEFINE_STATIC_LOCAL(const StepRange::StepDescription, stepDescription, (timeDefaultStep, timeDefaultStepBase, timeStepScaleFactor, StepRange::ScaledStepValueShouldBeInteger));
    100 
    101     const Decimal stepBase = parseToNumber(element()->fastGetAttribute(minAttr), 0);
    102     const Decimal minimum = parseToNumber(element()->fastGetAttribute(minAttr), Decimal::fromDouble(DateComponents::minimumTime()));
    103     const Decimal maximum = parseToNumber(element()->fastGetAttribute(maxAttr), Decimal::fromDouble(DateComponents::maximumTime()));
    104     const Decimal step = StepRange::parseStep(anyStepHandling, stepDescription, element()->fastGetAttribute(stepAttr));
    105     return StepRange(stepBase, minimum, maximum, step, stepDescription);
    106 }
    107 
    108 bool TimeInputType::parseToDateComponentsInternal(const String& string, DateComponents* out) const
    109 {
    110     ASSERT(out);
    111     unsigned end;
    112     return out->parseTime(string, 0, end) && end == string.length();
    113 }
    114 
    115 bool TimeInputType::setMillisecondToDateComponents(double value, DateComponents* date) const
    116 {
    117     ASSERT(date);
    118     return date->setMillisecondsSinceMidnight(value);
    119 }
    120 
    121 bool TimeInputType::isTimeField() const
    122 {
    123     return true;
    124 }
    125 
    126 #if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
    127 
    128 String TimeInputType::localizeValue(const String& proposedValue) const
    129 {
    130     DateComponents date;
    131     if (!parseToDateComponents(proposedValue, &date))
    132         return proposedValue;
    133 
    134     Locale::FormatType formatType = shouldHaveSecondField(date) ? Locale::FormatTypeMedium : Locale::FormatTypeShort;
    135 
    136     String localized = element()->locale().formatDateTime(date, formatType);
    137     return localized.isEmpty() ? proposedValue : localized;
    138 }
    139 
    140 String TimeInputType::formatDateTimeFieldsState(const DateTimeFieldsState& dateTimeFieldsState) const
    141 {
    142     if (!dateTimeFieldsState.hasHour() || !dateTimeFieldsState.hasMinute() || !dateTimeFieldsState.hasAMPM())
    143         return emptyString();
    144     if (dateTimeFieldsState.hasMillisecond() && dateTimeFieldsState.millisecond())
    145         return String::format("%02u:%02u:%02u.%03u",
    146                 dateTimeFieldsState.hour23(),
    147                 dateTimeFieldsState.minute(),
    148                 dateTimeFieldsState.hasSecond() ? dateTimeFieldsState.second() : 0,
    149                 dateTimeFieldsState.millisecond());
    150     if (dateTimeFieldsState.hasSecond() && dateTimeFieldsState.second())
    151         return String::format("%02u:%02u:%02u",
    152                 dateTimeFieldsState.hour23(),
    153                 dateTimeFieldsState.minute(),
    154                 dateTimeFieldsState.second());
    155     return String::format("%02u:%02u", dateTimeFieldsState.hour23(), dateTimeFieldsState.minute());
    156 }
    157 
    158 void TimeInputType::setupLayoutParameters(DateTimeEditElement::LayoutParameters& layoutParameters, const DateComponents& date) const
    159 {
    160     if (shouldHaveSecondField(date)) {
    161         layoutParameters.dateTimeFormat = layoutParameters.locale.timeFormat();
    162         layoutParameters.fallbackDateTimeFormat = "HH:mm:ss";
    163     } else {
    164         layoutParameters.dateTimeFormat = layoutParameters.locale.shortTimeFormat();
    165         layoutParameters.fallbackDateTimeFormat = "HH:mm";
    166     }
    167     if (!parseToDateComponents(element()->fastGetAttribute(minAttr), &layoutParameters.minimum))
    168         layoutParameters.minimum = DateComponents();
    169     if (!parseToDateComponents(element()->fastGetAttribute(maxAttr), &layoutParameters.maximum))
    170         layoutParameters.maximum = DateComponents();
    171 }
    172 
    173 bool TimeInputType::isValidFormat(bool hasYear, bool hasMonth, bool hasWeek, bool hasDay, bool hasAMPM, bool hasHour, bool hasMinute, bool hasSecond) const
    174 {
    175     return hasHour && hasMinute && hasAMPM;
    176 }
    177 #endif
    178 
    179 } // namespace WebCore
    180