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/forms/BaseDateAndTimeInputType.h" 33 34 #include <limits> 35 #include "core/html/HTMLInputElement.h" 36 #include "platform/text/PlatformLocale.h" 37 #include "wtf/CurrentTime.h" 38 #include "wtf/DateMath.h" 39 #include "wtf/MathExtras.h" 40 #include "wtf/text/WTFString.h" 41 42 namespace WebCore { 43 44 using blink::WebLocalizedString; 45 using namespace HTMLNames; 46 47 static const int msecPerMinute = 60 * 1000; 48 static const int msecPerSecond = 1000; 49 50 double BaseDateAndTimeInputType::valueAsDate() const 51 { 52 return valueAsDouble(); 53 } 54 55 void BaseDateAndTimeInputType::setValueAsDate(double value, ExceptionState&) const 56 { 57 element().setValue(serializeWithMilliseconds(value)); 58 } 59 60 double BaseDateAndTimeInputType::valueAsDouble() const 61 { 62 const Decimal value = parseToNumber(element().value(), Decimal::nan()); 63 return value.isFinite() ? value.toDouble() : DateComponents::invalidMilliseconds(); 64 } 65 66 void BaseDateAndTimeInputType::setValueAsDouble(double newValue, TextFieldEventBehavior eventBehavior, ExceptionState& exceptionState) const 67 { 68 setValueAsDecimal(Decimal::fromDouble(newValue), eventBehavior, exceptionState); 69 } 70 71 bool BaseDateAndTimeInputType::typeMismatchFor(const String& value) const 72 { 73 return !value.isEmpty() && !parseToDateComponents(value, 0); 74 } 75 76 bool BaseDateAndTimeInputType::typeMismatch() const 77 { 78 return typeMismatchFor(element().value()); 79 } 80 81 String BaseDateAndTimeInputType::rangeOverflowText(const Decimal& maximum) const 82 { 83 return locale().queryString(WebLocalizedString::ValidationRangeOverflowDateTime, localizeValue(serialize(maximum))); 84 } 85 86 String BaseDateAndTimeInputType::rangeUnderflowText(const Decimal& minimum) const 87 { 88 return locale().queryString(WebLocalizedString::ValidationRangeUnderflowDateTime, localizeValue(serialize(minimum))); 89 } 90 91 Decimal BaseDateAndTimeInputType::defaultValueForStepUp() const 92 { 93 double ms = currentTimeMS(); 94 double utcOffset = calculateUTCOffset(); 95 double dstOffset = calculateDSTOffset(ms, utcOffset); 96 int offset = static_cast<int>((utcOffset + dstOffset) / msPerMinute); 97 return Decimal::fromDouble(ms + (offset * msPerMinute)); 98 } 99 100 bool BaseDateAndTimeInputType::isSteppable() const 101 { 102 return true; 103 } 104 105 Decimal BaseDateAndTimeInputType::parseToNumber(const String& source, const Decimal& defaultValue) const 106 { 107 DateComponents date; 108 if (!parseToDateComponents(source, &date)) 109 return defaultValue; 110 double msec = date.millisecondsSinceEpoch(); 111 ASSERT(std::isfinite(msec)); 112 return Decimal::fromDouble(msec); 113 } 114 115 bool BaseDateAndTimeInputType::parseToDateComponents(const String& source, DateComponents* out) const 116 { 117 if (source.isEmpty()) 118 return false; 119 DateComponents ignoredResult; 120 if (!out) 121 out = &ignoredResult; 122 return parseToDateComponentsInternal(source, out); 123 } 124 125 String BaseDateAndTimeInputType::serialize(const Decimal& value) const 126 { 127 if (!value.isFinite()) 128 return String(); 129 DateComponents date; 130 if (!setMillisecondToDateComponents(value.toDouble(), &date)) 131 return String(); 132 return serializeWithComponents(date); 133 } 134 135 String BaseDateAndTimeInputType::serializeWithComponents(const DateComponents& date) const 136 { 137 Decimal step; 138 if (!element().getAllowedValueStep(&step)) 139 return date.toString(); 140 if (step.remainder(msecPerMinute).isZero()) 141 return date.toString(DateComponents::None); 142 if (step.remainder(msecPerSecond).isZero()) 143 return date.toString(DateComponents::Second); 144 return date.toString(DateComponents::Millisecond); 145 } 146 147 String BaseDateAndTimeInputType::serializeWithMilliseconds(double value) const 148 { 149 return serialize(Decimal::fromDouble(value)); 150 } 151 152 String BaseDateAndTimeInputType::localizeValue(const String& proposedValue) const 153 { 154 DateComponents date; 155 if (!parseToDateComponents(proposedValue, &date)) 156 return proposedValue; 157 158 String localized = element().locale().formatDateTime(date); 159 return localized.isEmpty() ? proposedValue : localized; 160 } 161 162 String BaseDateAndTimeInputType::visibleValue() const 163 { 164 return localizeValue(element().value()); 165 } 166 167 String BaseDateAndTimeInputType::sanitizeValue(const String& proposedValue) const 168 { 169 return typeMismatchFor(proposedValue) ? emptyString() : proposedValue; 170 } 171 172 bool BaseDateAndTimeInputType::supportsReadOnly() const 173 { 174 return true; 175 } 176 177 bool BaseDateAndTimeInputType::shouldRespectListAttribute() 178 { 179 return true; 180 } 181 182 bool BaseDateAndTimeInputType::valueMissing(const String& value) const 183 { 184 return element().isRequired() && value.isEmpty(); 185 } 186 187 bool BaseDateAndTimeInputType::shouldShowFocusRingOnMouseFocus() const 188 { 189 return true; 190 } 191 192 } // namespace WebCore 193