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#if ENABLE(INPUT_TYPE_MONTH) 33#include "MonthInputType.h" 34 35#include "DateComponents.h" 36#include "HTMLInputElement.h" 37#include "HTMLNames.h" 38#include "InputTypeNames.h" 39#include <wtf/CurrentTime.h> 40#include <wtf/DateMath.h> 41#include <wtf/MathExtras.h> 42#include <wtf/PassOwnPtr.h> 43 44namespace WebCore { 45 46using namespace HTMLNames; 47 48static const int monthDefaultStep = 1; 49static const int monthDefaultStepBase = 0; 50static const int monthStepScaleFactor = 1; 51 52PassOwnPtr<InputType> MonthInputType::create(HTMLInputElement* element) 53{ 54 return adoptPtr(new MonthInputType(element)); 55} 56 57void MonthInputType::attach() 58{ 59 observeFeatureIfVisible(FeatureObserver::InputTypeMonth); 60} 61 62const AtomicString& MonthInputType::formControlType() const 63{ 64 return InputTypeNames::month(); 65} 66 67DateComponents::Type MonthInputType::dateType() const 68{ 69 return DateComponents::Month; 70} 71 72double MonthInputType::valueAsDate() const 73{ 74 DateComponents date; 75 if (!parseToDateComponents(element()->value(), &date)) 76 return DateComponents::invalidMilliseconds(); 77 double msec = date.millisecondsSinceEpoch(); 78 ASSERT(std::isfinite(msec)); 79 return msec; 80} 81 82String MonthInputType::serializeWithMilliseconds(double value) const 83{ 84 DateComponents date; 85 if (!date.setMillisecondsSinceEpochForMonth(value)) 86 return String(); 87 return serializeWithComponents(date); 88} 89 90Decimal MonthInputType::defaultValueForStepUp() const 91{ 92 double current = currentTimeMS(); 93 double utcOffset = calculateUTCOffset(); 94 double dstOffset = calculateDSTOffset(current, utcOffset); 95 int offset = static_cast<int>((utcOffset + dstOffset) / msPerMinute); 96 current += offset * msPerMinute; 97 98 DateComponents date; 99 date.setMillisecondsSinceEpochForMonth(current); 100 double months = date.monthsSinceEpoch(); 101 ASSERT(std::isfinite(months)); 102 return Decimal::fromDouble(months); 103} 104 105StepRange MonthInputType::createStepRange(AnyStepHandling anyStepHandling) const 106{ 107 DEFINE_STATIC_LOCAL(const StepRange::StepDescription, stepDescription, (monthDefaultStep, monthDefaultStepBase, monthStepScaleFactor, StepRange::ParsedStepValueShouldBeInteger)); 108 109 const Decimal stepBase = parseToNumber(element()->fastGetAttribute(minAttr), Decimal::fromDouble(monthDefaultStepBase)); 110 const Decimal minimum = parseToNumber(element()->fastGetAttribute(minAttr), Decimal::fromDouble(DateComponents::minimumMonth())); 111 const Decimal maximum = parseToNumber(element()->fastGetAttribute(maxAttr), Decimal::fromDouble(DateComponents::maximumMonth())); 112 const Decimal step = StepRange::parseStep(anyStepHandling, stepDescription, element()->fastGetAttribute(stepAttr)); 113 return StepRange(stepBase, minimum, maximum, step, stepDescription); 114} 115 116Decimal MonthInputType::parseToNumber(const String& src, const Decimal& defaultValue) const 117{ 118 DateComponents date; 119 if (!parseToDateComponents(src, &date)) 120 return defaultValue; 121 double months = date.monthsSinceEpoch(); 122 ASSERT(std::isfinite(months)); 123 return Decimal::fromDouble(months); 124} 125 126bool MonthInputType::parseToDateComponentsInternal(const UChar* characters, unsigned length, DateComponents* out) const 127{ 128 ASSERT(out); 129 unsigned end; 130 return out->parseMonth(characters, length, 0, end) && end == length; 131} 132 133bool MonthInputType::setMillisecondToDateComponents(double value, DateComponents* date) const 134{ 135 ASSERT(date); 136 return date->setMonthsSinceEpoch(value); 137} 138 139bool MonthInputType::isMonthField() const 140{ 141 return true; 142} 143 144} // namespace WebCore 145 146#endif 147