1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 * Copyright (C) 2011-2018 Apple Inc. All rights reserved.
4 *
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6 * modification, are permitted provided that the following conditions are
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10 * notice, this list of conditions and the following disclaimer.
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13 * in the documentation and/or other materials provided with the
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18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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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 "HTMLInputElement.h"
36#include "HTMLNames.h"
37#include "HTMLParserIdioms.h"
38#include "InputTypeNames.h"
39#include "KeyboardEvent.h"
40#include "LocalizedStrings.h"
41#include "PlatformLocale.h"
42#include "RenderTextControl.h"
43#include <limits>
44#include <wtf/ASCIICType.h>
45#include <wtf/MathExtras.h>
46
47namespace WebCore {
48
49using namespace HTMLNames;
50
51static const int numberDefaultStep = 1;
52static const int numberDefaultStepBase = 0;
53static const int numberStepScaleFactor = 1;
54
55struct RealNumberRenderSize {
56 unsigned sizeBeforeDecimalPoint;
57 unsigned sizeAfteDecimalPoint;
58
59 RealNumberRenderSize max(const RealNumberRenderSize& other) const
60 {
61 return {
62 std::max(sizeBeforeDecimalPoint, other.sizeBeforeDecimalPoint),
63 std::max(sizeAfteDecimalPoint, other.sizeAfteDecimalPoint)
64 };
65 }
66};
67
68static RealNumberRenderSize calculateRenderSize(const Decimal& value)
69{
70 ASSERT(value.isFinite());
71 const unsigned sizeOfDigits = String::number(value.value().coefficient()).length();
72 const unsigned sizeOfSign = value.isNegative() ? 1 : 0;
73 const int exponent = value.exponent();
74 if (exponent >= 0)
75 return { sizeOfSign + sizeOfDigits, 0 };
76
77 const int sizeBeforeDecimalPoint = exponent + sizeOfDigits;
78 if (sizeBeforeDecimalPoint > 0) {
79 // In case of "123.456"
80 return { sizeOfSign + sizeBeforeDecimalPoint, sizeOfDigits - sizeBeforeDecimalPoint };
81 }
82
83 // In case of "0.00012345"
84 const unsigned sizeOfZero = 1;
85 const unsigned numberOfZeroAfterDecimalPoint = -sizeBeforeDecimalPoint;
86 return { sizeOfSign + sizeOfZero , numberOfZeroAfterDecimalPoint + sizeOfDigits };
87}
88
89const AtomicString& NumberInputType::formControlType() const
90{
91 return InputTypeNames::number();
92}
93
94void NumberInputType::setValue(const String& sanitizedValue, bool valueChanged, TextFieldEventBehavior eventBehavior)
95{
96 ASSERT(element());
97 if (!valueChanged && sanitizedValue.isEmpty() && !element()->innerTextValue().isEmpty())
98 updateInnerTextValue();
99 TextFieldInputType::setValue(sanitizedValue, valueChanged, eventBehavior);
100}
101
102double NumberInputType::valueAsDouble() const
103{
104 ASSERT(element());
105 return parseToDoubleForNumberType(element()->value());
106}
107
108ExceptionOr<void> NumberInputType::setValueAsDouble(double newValue, TextFieldEventBehavior eventBehavior) const
109{
110 // FIXME: We should use numeric_limits<double>::max for number input type.
111 const double floatMax = std::numeric_limits<float>::max();
112 if (newValue < -floatMax || newValue > floatMax)
113 return Exception { InvalidStateError };
114 ASSERT(element());
115 element()->setValue(serializeForNumberType(newValue), eventBehavior);
116 return { };
117}
118
119ExceptionOr<void> NumberInputType::setValueAsDecimal(const Decimal& newValue, TextFieldEventBehavior eventBehavior) const
120{
121 // FIXME: We should use numeric_limits<double>::max for number input type.
122 const Decimal floatMax = Decimal::fromDouble(std::numeric_limits<float>::max());
123 if (newValue < -floatMax || newValue > floatMax)
124 return Exception { InvalidStateError };
125 ASSERT(element());
126 element()->setValue(serializeForNumberType(newValue), eventBehavior);
127 return { };
128}
129
130bool NumberInputType::typeMismatchFor(const String& value) const
131{
132 return !value.isEmpty() && !std::isfinite(parseToDoubleForNumberType(value));
133}
134
135bool NumberInputType::typeMismatch() const
136{
137 ASSERT(element());
138 ASSERT(!typeMismatchFor(element()->value()));
139 return false;
140}
141
142StepRange NumberInputType::createStepRange(AnyStepHandling anyStepHandling) const
143{
144 static NeverDestroyed<const StepRange::StepDescription> stepDescription(numberDefaultStep, numberDefaultStepBase, numberStepScaleFactor);
145
146 ASSERT(element());
147 const Decimal stepBase = parseToDecimalForNumberType(element()->attributeWithoutSynchronization(minAttr), numberDefaultStepBase);
148 // FIXME: We should use numeric_limits<double>::max for number input type.
149 const Decimal floatMax = Decimal::fromDouble(std::numeric_limits<float>::max());
150 const Element& element = *this->element();
151
152 RangeLimitations rangeLimitations = RangeLimitations::Invalid;
153 auto extractBound = [&] (const QualifiedName& attributeName, const Decimal& defaultValue) -> Decimal {
154 const AtomicString& attributeValue = element.attributeWithoutSynchronization(attributeName);
155 Decimal valueFromAttribute = parseToNumberOrNaN(attributeValue);
156 if (valueFromAttribute.isFinite()) {
157 rangeLimitations = RangeLimitations::Valid;
158 return valueFromAttribute;
159 }
160 return defaultValue;
161 };
162 Decimal minimum = extractBound(minAttr, -floatMax);
163 Decimal maximum = extractBound(maxAttr, floatMax);
164
165 const Decimal step = StepRange::parseStep(anyStepHandling, stepDescription, element.attributeWithoutSynchronization(stepAttr));
166 return StepRange(stepBase, rangeLimitations, minimum, maximum, step, stepDescription);
167}
168
169bool NumberInputType::sizeShouldIncludeDecoration(int defaultSize, int& preferredSize) const
170{
171 preferredSize = defaultSize;
172
173 ASSERT(element());
174 auto& stepString = element()->attributeWithoutSynchronization(stepAttr);
175 if (equalLettersIgnoringASCIICase(stepString, "any"))
176 return false;
177
178 const Decimal minimum = parseToDecimalForNumberType(element()->attributeWithoutSynchronization(minAttr));
179 if (!minimum.isFinite())
180 return false;
181
182 const Decimal maximum = parseToDecimalForNumberType(element()->attributeWithoutSynchronization(maxAttr));
183 if (!maximum.isFinite())
184 return false;
185
186 const Decimal step = parseToDecimalForNumberType(stepString, 1);
187 ASSERT(step.isFinite());
188
189 RealNumberRenderSize size = calculateRenderSize(minimum).max(calculateRenderSize(maximum).max(calculateRenderSize(step)));
190
191 preferredSize = size.sizeBeforeDecimalPoint + size.sizeAfteDecimalPoint + (size.sizeAfteDecimalPoint ? 1 : 0);
192
193 return true;
194}
195
196float NumberInputType::decorationWidth() const
197{
198 ASSERT(element());
199
200 float width = 0;
201 RefPtr<HTMLElement> spinButton = element()->innerSpinButtonElement();
202 if (RenderBox* spinRenderer = spinButton ? spinButton->renderBox() : 0) {
203 width += spinRenderer->borderAndPaddingLogicalWidth();
204 // Since the width of spinRenderer is not calculated yet, spinRenderer->logicalWidth() returns 0.
205 // So computedStyle()->logicalWidth() is used instead.
206 width += spinButton->computedStyle()->logicalWidth().value();
207 }
208 return width;
209}
210
211bool NumberInputType::isSteppable() const
212{
213 return true;
214}
215
216auto NumberInputType::handleKeydownEvent(KeyboardEvent& event) -> ShouldCallBaseEventHandler
217{
218 handleKeydownEventForSpinButton(event);
219 if (!event.defaultHandled())
220 return TextFieldInputType::handleKeydownEvent(event);
221 return ShouldCallBaseEventHandler::Yes;
222}
223
224Decimal NumberInputType::parseToNumber(const String& src, const Decimal& defaultValue) const
225{
226 return parseToDecimalForNumberType(src, defaultValue);
227}
228
229String NumberInputType::serialize(const Decimal& value) const
230{
231 if (!value.isFinite())
232 return String();
233 return serializeForNumberType(value);
234}
235
236static bool isE(UChar ch)
237{
238 return ch == 'e' || ch == 'E';
239}
240
241String NumberInputType::localizeValue(const String& proposedValue) const
242{
243 if (proposedValue.isEmpty())
244 return proposedValue;
245 // We don't localize scientific notations.
246 if (proposedValue.find(isE) != notFound)
247 return proposedValue;
248 ASSERT(element());
249 return element()->locale().convertToLocalizedNumber(proposedValue);
250}
251
252String NumberInputType::visibleValue() const
253{
254 ASSERT(element());
255 return localizeValue(element()->value());
256}
257
258String NumberInputType::convertFromVisibleValue(const String& visibleValue) const
259{
260 if (visibleValue.isEmpty())
261 return visibleValue;
262 // We don't localize scientific notations.
263 if (visibleValue.find(isE) != notFound)
264 return visibleValue;
265 ASSERT(element());
266 return element()->locale().convertFromLocalizedNumber(visibleValue);
267}
268
269String NumberInputType::sanitizeValue(const String& proposedValue) const
270{
271 if (proposedValue.isEmpty())
272 return proposedValue;
273 return std::isfinite(parseToDoubleForNumberType(proposedValue)) ? proposedValue : emptyString();
274}
275
276bool NumberInputType::hasBadInput() const
277{
278 ASSERT(element());
279 String standardValue = convertFromVisibleValue(element()->innerTextValue());
280 return !standardValue.isEmpty() && !std::isfinite(parseToDoubleForNumberType(standardValue));
281}
282
283String NumberInputType::badInputText() const
284{
285 return validationMessageBadInputForNumberText();
286}
287
288bool NumberInputType::supportsPlaceholder() const
289{
290 return true;
291}
292
293bool NumberInputType::isNumberField() const
294{
295 return true;
296}
297
298void NumberInputType::attributeChanged(const QualifiedName& name)
299{
300 ASSERT(element());
301 if (name == maxAttr || name == minAttr) {
302 if (auto* element = this->element()) {
303 element->invalidateStyleForSubtree();
304 if (auto* renderer = element->renderer())
305 renderer->setNeedsLayoutAndPrefWidthsRecalc();
306 }
307 } else if (name == stepAttr) {
308 if (auto* element = this->element()) {
309 if (auto* renderer = element->renderer())
310 renderer->setNeedsLayoutAndPrefWidthsRecalc();
311 }
312 }
313 TextFieldInputType::attributeChanged(name);
314}
315
316} // namespace WebCore
317