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 "core/html/forms/NumberInputType.h" 34 35 #include "bindings/core/v8/ExceptionState.h" 36 #include "core/HTMLNames.h" 37 #include "core/InputTypeNames.h" 38 #include "core/dom/ExceptionCode.h" 39 #include "core/events/KeyboardEvent.h" 40 #include "core/html/HTMLInputElement.h" 41 #include "core/html/parser/HTMLParserIdioms.h" 42 #include "core/rendering/RenderTextControl.h" 43 #include "platform/text/PlatformLocale.h" 44 #include "wtf/MathExtras.h" 45 #include "wtf/PassOwnPtr.h" 46 #include <limits> 47 48 namespace blink { 49 50 using blink::WebLocalizedString; 51 using namespace HTMLNames; 52 53 static const int numberDefaultStep = 1; 54 static const int numberDefaultStepBase = 0; 55 static const int numberStepScaleFactor = 1; 56 57 struct RealNumberRenderSize { 58 unsigned sizeBeforeDecimalPoint; 59 unsigned sizeAfteDecimalPoint; 60 61 RealNumberRenderSize(unsigned before, unsigned after) 62 : sizeBeforeDecimalPoint(before) 63 , sizeAfteDecimalPoint(after) 64 { 65 } 66 67 RealNumberRenderSize max(const RealNumberRenderSize& other) const 68 { 69 return RealNumberRenderSize( 70 std::max(sizeBeforeDecimalPoint, other.sizeBeforeDecimalPoint), 71 std::max(sizeAfteDecimalPoint, other.sizeAfteDecimalPoint)); 72 } 73 }; 74 75 static RealNumberRenderSize calculateRenderSize(const Decimal& value) 76 { 77 ASSERT(value.isFinite()); 78 const unsigned sizeOfDigits = String::number(value.value().coefficient()).length(); 79 const unsigned sizeOfSign = value.isNegative() ? 1 : 0; 80 const int exponent = value.exponent(); 81 if (exponent >= 0) 82 return RealNumberRenderSize(sizeOfSign + sizeOfDigits, 0); 83 84 const int sizeBeforeDecimalPoint = exponent + sizeOfDigits; 85 if (sizeBeforeDecimalPoint > 0) { 86 // In case of "123.456" 87 return RealNumberRenderSize(sizeOfSign + sizeBeforeDecimalPoint, sizeOfDigits - sizeBeforeDecimalPoint); 88 } 89 90 // In case of "0.00012345" 91 const unsigned sizeOfZero = 1; 92 const unsigned numberOfZeroAfterDecimalPoint = -sizeBeforeDecimalPoint; 93 return RealNumberRenderSize(sizeOfSign + sizeOfZero , numberOfZeroAfterDecimalPoint + sizeOfDigits); 94 } 95 96 PassRefPtrWillBeRawPtr<InputType> NumberInputType::create(HTMLInputElement& element) 97 { 98 return adoptRefWillBeNoop(new NumberInputType(element)); 99 } 100 101 void NumberInputType::countUsage() 102 { 103 countUsageIfVisible(UseCounter::InputTypeNumber); 104 } 105 106 const AtomicString& NumberInputType::formControlType() const 107 { 108 return InputTypeNames::number; 109 } 110 111 void NumberInputType::setValue(const String& sanitizedValue, bool valueChanged, TextFieldEventBehavior eventBehavior) 112 { 113 if (!valueChanged && sanitizedValue.isEmpty() && !element().innerEditorValue().isEmpty()) 114 element().updateView(); 115 TextFieldInputType::setValue(sanitizedValue, valueChanged, eventBehavior); 116 } 117 118 double NumberInputType::valueAsDouble() const 119 { 120 return parseToDoubleForNumberType(element().value()); 121 } 122 123 void NumberInputType::setValueAsDouble(double newValue, TextFieldEventBehavior eventBehavior, ExceptionState& exceptionState) const 124 { 125 element().setValue(serializeForNumberType(newValue), eventBehavior); 126 } 127 128 void NumberInputType::setValueAsDecimal(const Decimal& newValue, TextFieldEventBehavior eventBehavior, ExceptionState& exceptionState) const 129 { 130 element().setValue(serializeForNumberType(newValue), eventBehavior); 131 } 132 133 bool NumberInputType::typeMismatchFor(const String& value) const 134 { 135 return !value.isEmpty() && !std::isfinite(parseToDoubleForNumberType(value)); 136 } 137 138 bool NumberInputType::typeMismatch() const 139 { 140 ASSERT(!typeMismatchFor(element().value())); 141 return false; 142 } 143 144 StepRange NumberInputType::createStepRange(AnyStepHandling anyStepHandling) const 145 { 146 DEFINE_STATIC_LOCAL(const StepRange::StepDescription, stepDescription, (numberDefaultStep, numberDefaultStepBase, numberStepScaleFactor)); 147 const Decimal doubleMax = Decimal::fromDouble(std::numeric_limits<double>::max()); 148 return InputType::createStepRange(anyStepHandling, numberDefaultStepBase, -doubleMax, doubleMax, stepDescription); 149 } 150 151 bool NumberInputType::sizeShouldIncludeDecoration(int defaultSize, int& preferredSize) const 152 { 153 preferredSize = defaultSize; 154 155 const String stepString = element().fastGetAttribute(stepAttr); 156 if (equalIgnoringCase(stepString, "any")) 157 return false; 158 159 const Decimal minimum = parseToDecimalForNumberType(element().fastGetAttribute(minAttr)); 160 if (!minimum.isFinite()) 161 return false; 162 163 const Decimal maximum = parseToDecimalForNumberType(element().fastGetAttribute(maxAttr)); 164 if (!maximum.isFinite()) 165 return false; 166 167 const Decimal step = parseToDecimalForNumberType(stepString, 1); 168 ASSERT(step.isFinite()); 169 170 RealNumberRenderSize size = calculateRenderSize(minimum).max(calculateRenderSize(maximum).max(calculateRenderSize(step))); 171 172 preferredSize = size.sizeBeforeDecimalPoint + size.sizeAfteDecimalPoint + (size.sizeAfteDecimalPoint ? 1 : 0); 173 174 return true; 175 } 176 177 bool NumberInputType::isSteppable() const 178 { 179 return true; 180 } 181 182 void NumberInputType::handleKeydownEvent(KeyboardEvent* event) 183 { 184 handleKeydownEventForSpinButton(event); 185 if (!event->defaultHandled()) 186 TextFieldInputType::handleKeydownEvent(event); 187 } 188 189 Decimal NumberInputType::parseToNumber(const String& src, const Decimal& defaultValue) const 190 { 191 return parseToDecimalForNumberType(src, defaultValue); 192 } 193 194 String NumberInputType::serialize(const Decimal& value) const 195 { 196 if (!value.isFinite()) 197 return String(); 198 return serializeForNumberType(value); 199 } 200 201 static bool isE(UChar ch) 202 { 203 return ch == 'e' || ch == 'E'; 204 } 205 206 String NumberInputType::localizeValue(const String& proposedValue) const 207 { 208 if (proposedValue.isEmpty()) 209 return proposedValue; 210 // We don't localize scientific notations. 211 if (proposedValue.find(isE) != kNotFound) 212 return proposedValue; 213 return element().locale().convertToLocalizedNumber(proposedValue); 214 } 215 216 String NumberInputType::visibleValue() const 217 { 218 return localizeValue(element().value()); 219 } 220 221 String NumberInputType::convertFromVisibleValue(const String& visibleValue) const 222 { 223 if (visibleValue.isEmpty()) 224 return visibleValue; 225 // We don't localize scientific notations. 226 if (visibleValue.find(isE) != kNotFound) 227 return visibleValue; 228 return element().locale().convertFromLocalizedNumber(visibleValue); 229 } 230 231 String NumberInputType::sanitizeValue(const String& proposedValue) const 232 { 233 if (proposedValue.isEmpty()) 234 return proposedValue; 235 return std::isfinite(parseToDoubleForNumberType(proposedValue)) ? proposedValue : emptyString(); 236 } 237 238 bool NumberInputType::hasBadInput() const 239 { 240 String standardValue = convertFromVisibleValue(element().innerEditorValue()); 241 return !standardValue.isEmpty() && !std::isfinite(parseToDoubleForNumberType(standardValue)); 242 } 243 244 String NumberInputType::badInputText() const 245 { 246 return locale().queryString(WebLocalizedString::ValidationBadInputForNumber); 247 } 248 249 String NumberInputType::rangeOverflowText(const Decimal& maximum) const 250 { 251 return locale().queryString(WebLocalizedString::ValidationRangeOverflow, localizeValue(serialize(maximum))); 252 } 253 254 String NumberInputType::rangeUnderflowText(const Decimal& minimum) const 255 { 256 return locale().queryString(WebLocalizedString::ValidationRangeUnderflow, localizeValue(serialize(minimum))); 257 } 258 259 bool NumberInputType::shouldRespectSpeechAttribute() 260 { 261 return true; 262 } 263 264 bool NumberInputType::supportsPlaceholder() const 265 { 266 return true; 267 } 268 269 void NumberInputType::minOrMaxAttributeChanged() 270 { 271 InputType::minOrMaxAttributeChanged(); 272 273 if (element().renderer()) 274 element().renderer()->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(); 275 } 276 277 void NumberInputType::stepAttributeChanged() 278 { 279 InputType::stepAttributeChanged(); 280 281 if (element().renderer()) 282 element().renderer()->setNeedsLayoutAndPrefWidthsRecalcAndFullPaintInvalidation(); 283 } 284 285 bool NumberInputType::supportsSelectionAPI() const 286 { 287 return false; 288 } 289 290 } // namespace blink 291