| /* |
| * Copyright (C) 2010 Google Inc. All rights reserved. |
| * Copyright (C) 2011 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "NumberInputType.h" |
| |
| #include "BeforeTextInsertedEvent.h" |
| #include "ExceptionCode.h" |
| #include "HTMLInputElement.h" |
| #include "HTMLNames.h" |
| #include "HTMLParserIdioms.h" |
| #include "KeyboardEvent.h" |
| #include "LocalizedNumber.h" |
| #include "RenderTextControl.h" |
| #include <limits> |
| #include <wtf/ASCIICType.h> |
| #include <wtf/MathExtras.h> |
| #include <wtf/PassOwnPtr.h> |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| using namespace std; |
| |
| static const double numberDefaultStep = 1.0; |
| static const double numberStepScaleFactor = 1.0; |
| |
| PassOwnPtr<InputType> NumberInputType::create(HTMLInputElement* element) |
| { |
| return adoptPtr(new NumberInputType(element)); |
| } |
| |
| const AtomicString& NumberInputType::formControlType() const |
| { |
| return InputTypeNames::number(); |
| } |
| |
| double NumberInputType::valueAsNumber() const |
| { |
| return parseToDouble(element()->value(), numeric_limits<double>::quiet_NaN()); |
| } |
| |
| void NumberInputType::setValueAsNumber(double newValue, ExceptionCode& ec) const |
| { |
| if (newValue < -numeric_limits<float>::max()) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| if (newValue > numeric_limits<float>::max()) { |
| ec = INVALID_STATE_ERR; |
| return; |
| } |
| element()->setValue(serialize(newValue)); |
| } |
| |
| bool NumberInputType::typeMismatchFor(const String& value) const |
| { |
| return !value.isEmpty() && !parseToDoubleForNumberType(value, 0); |
| } |
| |
| bool NumberInputType::typeMismatch() const |
| { |
| ASSERT(!typeMismatchFor(element()->value())); |
| return false; |
| } |
| |
| bool NumberInputType::rangeUnderflow(const String& value) const |
| { |
| const double nan = numeric_limits<double>::quiet_NaN(); |
| double doubleValue = parseToDouble(value, nan); |
| return isfinite(doubleValue) && doubleValue < minimum(); |
| } |
| |
| bool NumberInputType::rangeOverflow(const String& value) const |
| { |
| const double nan = numeric_limits<double>::quiet_NaN(); |
| double doubleValue = parseToDouble(value, nan); |
| return isfinite(doubleValue) && doubleValue > maximum(); |
| } |
| |
| bool NumberInputType::supportsRangeLimitation() const |
| { |
| return true; |
| } |
| |
| double NumberInputType::minimum() const |
| { |
| return parseToDouble(element()->fastGetAttribute(minAttr), -numeric_limits<float>::max()); |
| } |
| |
| double NumberInputType::maximum() const |
| { |
| return parseToDouble(element()->fastGetAttribute(maxAttr), numeric_limits<float>::max()); |
| } |
| |
| bool NumberInputType::stepMismatch(const String& value, double step) const |
| { |
| double doubleValue; |
| if (!parseToDoubleForNumberType(value, &doubleValue)) |
| return false; |
| doubleValue = fabs(doubleValue - stepBase()); |
| if (isinf(doubleValue)) |
| return false; |
| // double's fractional part size is DBL_MAN_DIG-bit. If the current value |
| // is greater than step*2^DBL_MANT_DIG, the following computation for |
| // remainder makes no sense. |
| if (doubleValue / pow(2.0, DBL_MANT_DIG) > step) |
| return false; |
| // The computation follows HTML5 4.10.7.2.10 `The step attribute' : |
| // ... that number subtracted from the step base is not an integral multiple |
| // of the allowed value step, the element is suffering from a step mismatch. |
| double remainder = fabs(doubleValue - step * round(doubleValue / step)); |
| // Accepts erros in lower fractional part which IEEE 754 single-precision |
| // can't represent. |
| double computedAcceptableError = acceptableError(step); |
| return computedAcceptableError < remainder && remainder < (step - computedAcceptableError); |
| } |
| |
| double NumberInputType::stepBase() const |
| { |
| return parseToDouble(element()->fastGetAttribute(minAttr), defaultStepBase()); |
| } |
| |
| double NumberInputType::stepBaseWithDecimalPlaces(unsigned* decimalPlaces) const |
| { |
| return parseToDoubleWithDecimalPlaces(element()->fastGetAttribute(minAttr), defaultStepBase(), decimalPlaces); |
| } |
| |
| double NumberInputType::defaultStep() const |
| { |
| return numberDefaultStep; |
| } |
| |
| double NumberInputType::stepScaleFactor() const |
| { |
| return numberStepScaleFactor; |
| } |
| |
| void NumberInputType::handleKeydownEvent(KeyboardEvent* event) |
| { |
| handleKeydownEventForSpinButton(event); |
| if (!event->defaultHandled()) |
| TextFieldInputType::handleKeydownEvent(event); |
| } |
| |
| void NumberInputType::handleWheelEvent(WheelEvent* event) |
| { |
| handleWheelEventForSpinButton(event); |
| } |
| |
| double NumberInputType::parseToDouble(const String& src, double defaultValue) const |
| { |
| double numberValue; |
| if (!parseToDoubleForNumberType(src, &numberValue)) |
| return defaultValue; |
| ASSERT(isfinite(numberValue)); |
| return numberValue; |
| } |
| |
| double NumberInputType::parseToDoubleWithDecimalPlaces(const String& src, double defaultValue, unsigned *decimalPlaces) const |
| { |
| double numberValue; |
| if (!parseToDoubleForNumberTypeWithDecimalPlaces(src, &numberValue, decimalPlaces)) |
| return defaultValue; |
| ASSERT(isfinite(numberValue)); |
| return numberValue; |
| } |
| |
| String NumberInputType::serialize(double value) const |
| { |
| if (!isfinite(value)) |
| return String(); |
| return serializeForNumberType(value); |
| } |
| |
| double NumberInputType::acceptableError(double step) const |
| { |
| return step / pow(2.0, FLT_MANT_DIG); |
| } |
| |
| void NumberInputType::handleBlurEvent() |
| { |
| // Reset the renderer value, which might be unmatched with the element value. |
| element()->setFormControlValueMatchesRenderer(false); |
| |
| // We need to reset the renderer value explicitly because an unacceptable |
| // renderer value should be purged before style calculation. |
| if (element()->renderer()) |
| element()->renderer()->updateFromElement(); |
| } |
| |
| String NumberInputType::visibleValue() const |
| { |
| String currentValue = element()->value(); |
| if (currentValue.isEmpty()) |
| return currentValue; |
| double doubleValue = numeric_limits<double>::quiet_NaN(); |
| unsigned decimalPlace; |
| parseToDoubleForNumberTypeWithDecimalPlaces(currentValue, &doubleValue, &decimalPlace); |
| String localized = formatLocalizedNumber(doubleValue, decimalPlace); |
| return localized.isEmpty() ? currentValue : localized; |
| } |
| |
| String NumberInputType::convertFromVisibleValue(const String& visibleValue) const |
| { |
| if (visibleValue.isEmpty()) |
| return visibleValue; |
| double parsedNumber = parseLocalizedNumber(visibleValue); |
| return isfinite(parsedNumber) ? serializeForNumberType(parsedNumber) : visibleValue; |
| } |
| |
| bool NumberInputType::isAcceptableValue(const String& proposedValue) |
| { |
| return proposedValue.isEmpty() || isfinite(parseLocalizedNumber(proposedValue)) || parseToDoubleForNumberType(proposedValue, 0); |
| } |
| |
| String NumberInputType::sanitizeValue(const String& proposedValue) |
| { |
| if (proposedValue.isEmpty()) |
| return proposedValue; |
| return parseToDoubleForNumberType(proposedValue, 0) ? proposedValue : emptyAtom.string(); |
| } |
| |
| bool NumberInputType::hasUnacceptableValue() |
| { |
| return element()->renderer() && !isAcceptableValue(toRenderTextControl(element()->renderer())->text()); |
| } |
| |
| bool NumberInputType::shouldRespectSpeechAttribute() |
| { |
| return true; |
| } |
| |
| bool NumberInputType::isNumberField() const |
| { |
| return true; |
| } |
| |
| bool NumberInputType::hasSpinButton() |
| { |
| return true; |
| } |
| |
| } // namespace WebCore |