1/* 2 * Copyright (C) 2010 Google Inc. All rights reserved. 3 * Copyright (C) 2011 Apple Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * * Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following disclaimer 13 * in the documentation and/or other materials provided with the 14 * distribution. 15 * * Neither the name of Google Inc. nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32#include "config.h" 33#include "NumberInputType.h" 34 35#include "BeforeTextInsertedEvent.h" 36#include "ExceptionCode.h" 37#include "HTMLInputElement.h" 38#include "HTMLNames.h" 39#include "HTMLParserIdioms.h" 40#include "InputTypeNames.h" 41#include "KeyboardEvent.h" 42#include "LocalizedStrings.h" 43#include "PlatformLocale.h" 44#include "RenderTextControl.h" 45#include <limits> 46#include <wtf/ASCIICType.h> 47#include <wtf/MathExtras.h> 48#include <wtf/PassOwnPtr.h> 49 50namespace WebCore { 51 52using namespace HTMLNames; 53using namespace std; 54 55static const int numberDefaultStep = 1; 56static const int numberDefaultStepBase = 0; 57static const int numberStepScaleFactor = 1; 58 59struct RealNumberRenderSize 60{ 61 unsigned sizeBeforeDecimalPoint; 62 unsigned sizeAfteDecimalPoint; 63 64 RealNumberRenderSize(unsigned before, unsigned after) 65 : sizeBeforeDecimalPoint(before) 66 , sizeAfteDecimalPoint(after) 67 { 68 } 69 70 RealNumberRenderSize max(const RealNumberRenderSize& other) const 71 { 72 return RealNumberRenderSize( 73 std::max(sizeBeforeDecimalPoint, other.sizeBeforeDecimalPoint), 74 std::max(sizeAfteDecimalPoint, other.sizeAfteDecimalPoint)); 75 } 76}; 77 78static RealNumberRenderSize calculateRenderSize(const Decimal& value) 79{ 80 ASSERT(value.isFinite()); 81 const unsigned sizeOfDigits = String::number(value.value().coefficient()).length(); 82 const unsigned sizeOfSign = value.isNegative() ? 1 : 0; 83 const int exponent = value.exponent(); 84 if (exponent >= 0) 85 return RealNumberRenderSize(sizeOfSign + sizeOfDigits, 0); 86 87 const int sizeBeforeDecimalPoint = exponent + sizeOfDigits; 88 if (sizeBeforeDecimalPoint > 0) { 89 // In case of "123.456" 90 return RealNumberRenderSize(sizeOfSign + sizeBeforeDecimalPoint, sizeOfDigits - sizeBeforeDecimalPoint); 91 } 92 93 // In case of "0.00012345" 94 const unsigned sizeOfZero = 1; 95 const unsigned numberOfZeroAfterDecimalPoint = -sizeBeforeDecimalPoint; 96 return RealNumberRenderSize(sizeOfSign + sizeOfZero , numberOfZeroAfterDecimalPoint + sizeOfDigits); 97} 98 99PassOwnPtr<InputType> NumberInputType::create(HTMLInputElement* element) 100{ 101 return adoptPtr(new NumberInputType(element)); 102} 103 104void NumberInputType::attach() 105{ 106 TextFieldInputType::attach(); 107 observeFeatureIfVisible(FeatureObserver::InputTypeNumber); 108} 109 110const AtomicString& NumberInputType::formControlType() const 111{ 112 return InputTypeNames::number(); 113} 114 115void NumberInputType::setValue(const String& sanitizedValue, bool valueChanged, TextFieldEventBehavior eventBehavior) 116{ 117 if (!valueChanged && sanitizedValue.isEmpty() && !element()->innerTextValue().isEmpty()) 118 updateInnerTextValue(); 119 TextFieldInputType::setValue(sanitizedValue, valueChanged, eventBehavior); 120} 121 122double NumberInputType::valueAsDouble() const 123{ 124 return parseToDoubleForNumberType(element()->value()); 125} 126 127void NumberInputType::setValueAsDouble(double newValue, TextFieldEventBehavior eventBehavior, ExceptionCode& ec) const 128{ 129 // FIXME: We should use numeric_limits<double>::max for number input type. 130 const double floatMax = numeric_limits<float>::max(); 131 if (newValue < -floatMax) { 132 ec = INVALID_STATE_ERR; 133 return; 134 } 135 if (newValue > floatMax) { 136 ec = INVALID_STATE_ERR; 137 return; 138 } 139 element()->setValue(serializeForNumberType(newValue), eventBehavior); 140} 141 142void NumberInputType::setValueAsDecimal(const Decimal& newValue, TextFieldEventBehavior eventBehavior, ExceptionCode& ec) const 143{ 144 // FIXME: We should use numeric_limits<double>::max for number input type. 145 const Decimal floatMax = Decimal::fromDouble(numeric_limits<float>::max()); 146 if (newValue < -floatMax) { 147 ec = INVALID_STATE_ERR; 148 return; 149 } 150 if (newValue > floatMax) { 151 ec = INVALID_STATE_ERR; 152 return; 153 } 154 element()->setValue(serializeForNumberType(newValue), eventBehavior); 155} 156 157bool NumberInputType::typeMismatchFor(const String& value) const 158{ 159 return !value.isEmpty() && !std::isfinite(parseToDoubleForNumberType(value)); 160} 161 162bool NumberInputType::typeMismatch() const 163{ 164 ASSERT(!typeMismatchFor(element()->value())); 165 return false; 166} 167 168StepRange NumberInputType::createStepRange(AnyStepHandling anyStepHandling) const 169{ 170 DEFINE_STATIC_LOCAL(const StepRange::StepDescription, stepDescription, (numberDefaultStep, numberDefaultStepBase, numberStepScaleFactor)); 171 const Decimal stepBase = parseToDecimalForNumberType(element()->fastGetAttribute(minAttr), numberDefaultStepBase); 172 // FIXME: We should use numeric_limits<double>::max for number input type. 173 const Decimal floatMax = Decimal::fromDouble(numeric_limits<float>::max()); 174 const Decimal minimum = parseToNumber(element()->fastGetAttribute(minAttr), -floatMax); 175 const Decimal maximum = parseToNumber(element()->fastGetAttribute(maxAttr), floatMax); 176 const Decimal step = StepRange::parseStep(anyStepHandling, stepDescription, element()->fastGetAttribute(stepAttr)); 177 return StepRange(stepBase, minimum, maximum, step, stepDescription); 178} 179 180bool NumberInputType::sizeShouldIncludeDecoration(int defaultSize, int& preferredSize) const 181{ 182 preferredSize = defaultSize; 183 184 const String stepString = element()->fastGetAttribute(stepAttr); 185 if (equalIgnoringCase(stepString, "any")) 186 return false; 187 188 const Decimal minimum = parseToDecimalForNumberType(element()->fastGetAttribute(minAttr)); 189 if (!minimum.isFinite()) 190 return false; 191 192 const Decimal maximum = parseToDecimalForNumberType(element()->fastGetAttribute(maxAttr)); 193 if (!maximum.isFinite()) 194 return false; 195 196 const Decimal step = parseToDecimalForNumberType(stepString, 1); 197 ASSERT(step.isFinite()); 198 199 RealNumberRenderSize size = calculateRenderSize(minimum).max(calculateRenderSize(maximum).max(calculateRenderSize(step))); 200 201 preferredSize = size.sizeBeforeDecimalPoint + size.sizeAfteDecimalPoint + (size.sizeAfteDecimalPoint ? 1 : 0); 202 203 return true; 204} 205 206bool NumberInputType::isSteppable() const 207{ 208 return true; 209} 210 211void NumberInputType::handleKeydownEvent(KeyboardEvent* event) 212{ 213 handleKeydownEventForSpinButton(event); 214 if (!event->defaultHandled()) 215 TextFieldInputType::handleKeydownEvent(event); 216} 217 218Decimal NumberInputType::parseToNumber(const String& src, const Decimal& defaultValue) const 219{ 220 return parseToDecimalForNumberType(src, defaultValue); 221} 222 223String NumberInputType::serialize(const Decimal& value) const 224{ 225 if (!value.isFinite()) 226 return String(); 227 return serializeForNumberType(value); 228} 229 230static bool isE(UChar ch) 231{ 232 return ch == 'e' || ch == 'E'; 233} 234 235String NumberInputType::localizeValue(const String& proposedValue) const 236{ 237 if (proposedValue.isEmpty()) 238 return proposedValue; 239 // We don't localize scientific notations. 240 if (proposedValue.find(isE) != notFound) 241 return proposedValue; 242 return element()->locale().convertToLocalizedNumber(proposedValue); 243} 244 245String NumberInputType::visibleValue() const 246{ 247 return localizeValue(element()->value()); 248} 249 250String NumberInputType::convertFromVisibleValue(const String& visibleValue) const 251{ 252 if (visibleValue.isEmpty()) 253 return visibleValue; 254 // We don't localize scientific notations. 255 if (visibleValue.find(isE) != notFound) 256 return visibleValue; 257 return element()->locale().convertFromLocalizedNumber(visibleValue); 258} 259 260String NumberInputType::sanitizeValue(const String& proposedValue) const 261{ 262 if (proposedValue.isEmpty()) 263 return proposedValue; 264 return std::isfinite(parseToDoubleForNumberType(proposedValue)) ? proposedValue : emptyString(); 265} 266 267bool NumberInputType::hasBadInput() const 268{ 269 String standardValue = convertFromVisibleValue(element()->innerTextValue()); 270 return !standardValue.isEmpty() && !std::isfinite(parseToDoubleForNumberType(standardValue)); 271} 272 273String NumberInputType::badInputText() const 274{ 275 return validationMessageBadInputForNumberText(); 276} 277 278bool NumberInputType::shouldRespectSpeechAttribute() 279{ 280 return true; 281} 282 283bool NumberInputType::supportsPlaceholder() const 284{ 285 return true; 286} 287 288bool NumberInputType::isNumberField() const 289{ 290 return true; 291} 292 293void NumberInputType::minOrMaxAttributeChanged() 294{ 295 InputType::minOrMaxAttributeChanged(); 296 297 if (element()->renderer()) 298 element()->renderer()->setNeedsLayoutAndPrefWidthsRecalc(); 299} 300 301void NumberInputType::stepAttributeChanged() 302{ 303 InputType::stepAttributeChanged(); 304 305 if (element()->renderer()) 306 element()->renderer()->setNeedsLayoutAndPrefWidthsRecalc(); 307} 308 309} // namespace WebCore 310