std::pair<String, String> InputType::validationMessage(const InputTypeView& inputTypeView) const
{
const String value = element().value();
// The order of the following checks is meaningful. e.g. We'd like to show the
// badInput message even if the control has other validation errors.
if (inputTypeView.hasBadInput())
return std::make_pair(badInputText(), emptyString());
if (valueMissing(value))
return std::make_pair(valueMissingText(), emptyString());
if (typeMismatch())
return std::make_pair(typeMismatchText(), emptyString());
if (patternMismatch(value)) {
// https://html.spec.whatwg.org/multipage/forms.html#attr-input-pattern
// When an input element has a pattern attribute specified, authors
// should include a title attribute to give a description of the
// pattern. User agents may use the contents of this attribute, if it
// is present, when informing the user that the pattern is not matched
return std::make_pair(locale().queryString(WebLocalizedString::ValidationPatternMismatch), element().fastGetAttribute(titleAttr).getString());
}
if (element().tooLong())
return std::make_pair(locale().validationMessageTooLongText(value.length(), element().maxLength()), emptyString());
if (element().tooShort())
return std::make_pair(locale().validationMessageTooShortText(value.length(), element().minLength()), emptyString());
if (!isSteppable())
return std::make_pair(emptyString(), emptyString());
const Decimal numericValue = parseToNumberOrNaN(value);
if (!numericValue.isFinite())
return std::make_pair(emptyString(), emptyString());
StepRange stepRange(createStepRange(RejectAny));
if (numericValue < stepRange.minimum())
return std::make_pair(rangeUnderflowText(stepRange.minimum()), emptyString());
if (numericValue > stepRange.maximum())
return std::make_pair(rangeOverflowText(stepRange.maximum()), emptyString());
if (stepRange.stepMismatch(numericValue)) {
DCHECK(stepRange.hasStep());
Decimal candidate1 = stepRange.clampValue(numericValue);
String localizedCandidate1 = localizeValue(serialize(candidate1));
Decimal candidate2 = candidate1 < numericValue ? candidate1 + stepRange.step() : candidate1 - stepRange.step();
if (!candidate2.isFinite() || candidate2 < stepRange.minimum() || candidate2 > stepRange.maximum())
return std::make_pair(locale().queryString(WebLocalizedString::ValidationStepMismatchCloseToLimit, localizedCandidate1), emptyString());
String localizedCandidate2 = localizeValue(serialize(candidate2));
if (candidate1 < candidate2)
return std::make_pair(locale().queryString(WebLocalizedString::ValidationStepMismatch, localizedCandidate1, localizedCandidate2), emptyString());
return std::make_pair(locale().queryString(WebLocalizedString::ValidationStepMismatch, localizedCandidate2, localizedCandidate1), emptyString());
}
return std::make_pair(emptyString(), emptyString());
}
void SliderThumbElement::setPositionFromPoint(const LayoutPoint& absolutePoint)
{
RefPtr<HTMLInputElement> input = hostInput();
if (!input || !input->renderer() || !renderBox())
return;
HTMLElement* trackElement = input->sliderTrackElement();
if (!trackElement->renderBox())
return;
// Do all the tracking math relative to the input's renderer's box.
RenderBox& inputRenderer = downcast<RenderBox>(*input->renderer());
RenderBox& trackRenderer = *trackElement->renderBox();
bool isVertical = hasVerticalAppearance(input.get());
bool isLeftToRightDirection = renderBox()->style().isLeftToRightDirection();
LayoutPoint offset(inputRenderer.absoluteToLocal(absolutePoint, UseTransforms));
FloatRect trackBoundingBox = trackRenderer.localToContainerQuad(FloatRect(0, 0, trackRenderer.width(), trackRenderer.height()), &inputRenderer).enclosingBoundingBox();
LayoutUnit trackLength;
LayoutUnit position;
if (isVertical) {
trackLength = trackRenderer.contentHeight() - renderBox()->height();
position = offset.y() - renderBox()->height() / 2 - trackBoundingBox.y() - renderBox()->marginBottom();
} else {
trackLength = trackRenderer.contentWidth() - renderBox()->width();
position = offset.x() - renderBox()->width() / 2 - trackBoundingBox.x();
position -= isLeftToRightDirection ? renderBox()->marginLeft() : renderBox()->marginRight();
}
position = std::max<LayoutUnit>(0, std::min(position, trackLength));
const Decimal ratio = Decimal::fromDouble(static_cast<double>(position) / trackLength);
const Decimal fraction = isVertical || !isLeftToRightDirection ? Decimal(1) - ratio : ratio;
StepRange stepRange(input->createStepRange(RejectAny));
Decimal value = stepRange.clampValue(stepRange.valueFromProportion(fraction));
#if ENABLE(DATALIST_ELEMENT)
const LayoutUnit snappingThreshold = renderer()->theme().sliderTickSnappingThreshold();
if (snappingThreshold > 0) {
Decimal closest = input->findClosestTickMarkValue(value);
if (closest.isFinite()) {
double closestFraction = stepRange.proportionFromValue(closest).toDouble();
double closestRatio = isVertical || !isLeftToRightDirection ? 1.0 - closestFraction : closestFraction;
LayoutUnit closestPosition = trackLength * closestRatio;
if ((closestPosition - position).abs() <= snappingThreshold)
value = closest;
}
}
#endif
String valueString = serializeForNumberType(value);
if (valueString == input->value())
return;
// FIXME: This is no longer being set from renderer. Consider updating the method name.
input->setValueFromRenderer(valueString);
if (renderer())
renderer()->setNeedsLayout();
}
void RangeInputType::handleKeydownEvent(KeyboardEvent* event)
{
if (element()->isDisabledOrReadOnly())
return;
const String& key = event->keyIdentifier();
const Decimal current = parseToNumberOrNaN(element()->value());
ASSERT(current.isFinite());
StepRange stepRange(createStepRange(RejectAny));
// FIXME: We can't use stepUp() for the step value "any". So, we increase
// or decrease the value by 1/100 of the value range. Is it reasonable?
const Decimal step = equalIgnoringCase(element()->fastGetAttribute(stepAttr), "any") ? (stepRange.maximum() - stepRange.minimum()) / 100 : stepRange.step();
const Decimal bigStep = max((stepRange.maximum() - stepRange.minimum()) / 10, step);
bool isVertical = false;
if (element()->renderer()) {
ControlPart part = element()->renderer()->style()->appearance();
isVertical = part == SliderVerticalPart || part == MediaVolumeSliderPart;
}
Decimal newValue;
if (key == "Up")
newValue = current + step;
else if (key == "Down")
newValue = current - step;
else if (key == "Left")
newValue = isVertical ? current + step : current - step;
else if (key == "Right")
newValue = isVertical ? current - step : current + step;
else if (key == "PageUp")
newValue = current + bigStep;
else if (key == "PageDown")
newValue = current - bigStep;
else if (key == "Home")
newValue = isVertical ? stepRange.maximum() : stepRange.minimum();
else if (key == "End")
newValue = isVertical ? stepRange.minimum() : stepRange.maximum();
else
return; // Did not match any key binding.
newValue = stepRange.clampValue(newValue);
if (newValue != current) {
EventQueueScope scope;
ExceptionCode ec;
TextFieldEventBehavior eventBehavior = DispatchChangeEvent;
setValueAsDecimal(newValue, eventBehavior, ec);
if (AXObjectCache::accessibilityEnabled())
element()->document()->axObjectCache()->postNotification(element(), AXObjectCache::AXValueChanged, true);
element()->dispatchFormControlChangeEvent();
}
event->setDefaultHandled();
}
void SliderThumbElement::setPositionFromPoint(const LayoutPoint& point)
{
RefPtrWillBeRawPtr<HTMLInputElement> input(hostInput());
Element* trackElement = input->closedShadowRoot()->getElementById(ShadowElementNames::sliderTrack());
if (!input->layoutObject() || !layoutBox() || !trackElement->layoutBox())
return;
LayoutPoint offset = roundedLayoutPoint(input->layoutObject()->absoluteToLocal(FloatPoint(point), UseTransforms));
bool isVertical = hasVerticalAppearance(input.get());
bool isLeftToRightDirection = layoutBox()->style()->isLeftToRightDirection();
LayoutUnit trackSize;
LayoutUnit position;
LayoutUnit currentPosition;
// We need to calculate currentPosition from absolute points becaue the
// renderer for this node is usually on a layer and layoutBox()->x() and
// y() are unusable.
// FIXME: This should probably respect transforms.
LayoutPoint absoluteThumbOrigin = layoutBox()->absoluteBoundingBoxRectIgnoringTransforms().location();
LayoutPoint absoluteSliderContentOrigin = roundedLayoutPoint(input->layoutObject()->localToAbsolute());
IntRect trackBoundingBox = trackElement->layoutObject()->absoluteBoundingBoxRectIgnoringTransforms();
IntRect inputBoundingBox = input->layoutObject()->absoluteBoundingBoxRectIgnoringTransforms();
if (isVertical) {
trackSize = trackElement->layoutBox()->contentHeight() - layoutBox()->size().height();
position = offset.y() - layoutBox()->size().height() / 2 - trackBoundingBox.y() + inputBoundingBox.y() - layoutBox()->marginBottom();
currentPosition = absoluteThumbOrigin.y() - absoluteSliderContentOrigin.y();
} else {
trackSize = trackElement->layoutBox()->contentWidth() - layoutBox()->size().width();
position = offset.x() - layoutBox()->size().width() / 2 - trackBoundingBox.x() + inputBoundingBox.x();
position -= isLeftToRightDirection ? layoutBox()->marginLeft() : layoutBox()->marginRight();
currentPosition = absoluteThumbOrigin.x() - absoluteSliderContentOrigin.x();
}
position = std::max<LayoutUnit>(0, std::min(position, trackSize));
const Decimal ratio = Decimal::fromDouble(static_cast<double>(position) / trackSize);
const Decimal fraction = isVertical || !isLeftToRightDirection ? Decimal(1) - ratio : ratio;
StepRange stepRange(input->createStepRange(RejectAny));
Decimal value = stepRange.clampValue(stepRange.valueFromProportion(fraction));
Decimal closest = input->findClosestTickMarkValue(value);
if (closest.isFinite()) {
double closestFraction = stepRange.proportionFromValue(closest).toDouble();
double closestRatio = isVertical || !isLeftToRightDirection ? 1.0 - closestFraction : closestFraction;
LayoutUnit closestPosition = trackSize * closestRatio;
const LayoutUnit snappingThreshold = 5;
if ((closestPosition - position).abs() <= snappingThreshold)
value = closest;
}
String valueString = serializeForNumberType(value);
if (valueString == input->value())
return;
// FIXME: This is no longer being set from renderer. Consider updating the method name.
input->setValueFromRenderer(valueString);
if (layoutObject())
layoutObject()->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::SliderValueChanged);
}
bool InputType::isOutOfRange(const String& value) const
{
if (!isSteppable())
return false;
const Decimal numericValue = parseToNumberOrNaN(value);
if (!numericValue.isFinite())
return true;
StepRange stepRange(createStepRange(RejectAny));
return numericValue < stepRange.minimum() || numericValue > stepRange.maximum();
}
bool InputType::isOutOfRange(const String& value) const
{
if (!isSteppable())
return false;
// This function should return true if either validity.rangeUnderflow or
// validity.rangeOverflow are true.
// If the INPUT has no value, they are false.
const Decimal numericValue = parseToNumberOrNaN(value);
if (!numericValue.isFinite())
return false;
StepRange stepRange(createStepRange(RejectAny));
return stepRange.hasRangeLimitations() && (numericValue < stepRange.minimum() || numericValue > stepRange.maximum());
}
bool InputType::isInRange(const String& value) const
{
if (!isSteppable())
return false;
// This function should return true if both of validity.rangeUnderflow and
// validity.rangeOverflow are false.
// If the INPUT has no value, they are false.
const Decimal numericValue = parseToNumberOrNaN(value);
if (!numericValue.isFinite())
return true;
StepRange stepRange(createStepRange(RejectAny));
return numericValue >= stepRange.minimum() && numericValue <= stepRange.maximum();
}
void InputType::applyStep(int count, AnyStepHandling anyStepHandling, TextFieldEventBehavior eventBehavior, ExceptionCode& ec)
{
StepRange stepRange(createStepRange(anyStepHandling));
if (!stepRange.hasStep()) {
ec = INVALID_STATE_ERR;
return;
}
const Decimal current = parseToNumberOrNaN(element().value());
if (!current.isFinite()) {
ec = INVALID_STATE_ERR;
return;
}
Decimal newValue = current + stepRange.step() * count;
if (!newValue.isFinite()) {
ec = INVALID_STATE_ERR;
return;
}
const Decimal acceptableErrorValue = stepRange.acceptableError();
if (newValue - stepRange.minimum() < -acceptableErrorValue) {
ec = INVALID_STATE_ERR;
return;
}
if (newValue < stepRange.minimum())
newValue = stepRange.minimum();
const AtomicString& stepString = element().fastGetAttribute(stepAttr);
if (!equalIgnoringCase(stepString, "any"))
newValue = stepRange.alignValueForStep(current, newValue);
if (newValue - stepRange.maximum() > acceptableErrorValue) {
ec = INVALID_STATE_ERR;
return;
}
if (newValue > stepRange.maximum())
newValue = stepRange.maximum();
setValueAsDecimal(newValue, eventBehavior, ec);
if (AXObjectCache* cache = element().document().existingAXObjectCache())
cache->postNotification(&element(), AXObjectCache::AXValueChanged);
}
String InputType::validationMessage() const
{
String value = element().value();
// The order of the following checks is meaningful. e.g. We'd like to show the
// badInput message even if the control has other validation errors.
if (hasBadInput())
return badInputText();
if (valueMissing(value))
return valueMissingText();
if (typeMismatch())
return typeMismatchText();
if (patternMismatch(value))
return validationMessagePatternMismatchText();
if (element().tooLong())
return validationMessageTooLongText(numGraphemeClusters(value), element().maxLength());
if (!isSteppable())
return emptyString();
const Decimal numericValue = parseToNumberOrNaN(value);
if (!numericValue.isFinite())
return emptyString();
StepRange stepRange(createStepRange(RejectAny));
if (numericValue < stepRange.minimum())
return validationMessageRangeUnderflowText(serialize(stepRange.minimum()));
if (numericValue > stepRange.maximum())
return validationMessageRangeOverflowText(serialize(stepRange.maximum()));
if (stepRange.stepMismatch(numericValue)) {
const String stepString = stepRange.hasStep() ? serializeForNumberType(stepRange.step() / stepRange.stepScaleFactor()) : emptyString();
return validationMessageStepMismatchText(serialize(stepRange.stepBase()), stepString);
}
return emptyString();
}
void InputType::stepUpFromRenderer(int n)
{
// The differences from stepUp()/stepDown():
//
// Difference 1: the current value
// If the current value is not a number, including empty, the current value is assumed as 0.
// * If 0 is in-range, and matches to step value
// - The value should be the +step if n > 0
// - The value should be the -step if n < 0
// If -step or +step is out of range, new value should be 0.
// * If 0 is smaller than the minimum value
// - The value should be the minimum value for any n
// * If 0 is larger than the maximum value
// - The value should be the maximum value for any n
// * If 0 is in-range, but not matched to step value
// - The value should be the larger matched value nearest to 0 if n > 0
// e.g. <input type=number min=-100 step=3> -> 2
// - The value should be the smaler matched value nearest to 0 if n < 0
// e.g. <input type=number min=-100 step=3> -> -1
// As for date/datetime-local/month/time/week types, the current value is assumed as "the current local date/time".
// As for datetime type, the current value is assumed as "the current date/time in UTC".
// If the current value is smaller than the minimum value:
// - The value should be the minimum value if n > 0
// - Nothing should happen if n < 0
// If the current value is larger than the maximum value:
// - The value should be the maximum value if n < 0
// - Nothing should happen if n > 0
//
// Difference 2: clamping steps
// If the current value is not matched to step value:
// - The value should be the larger matched value nearest to 0 if n > 0
// e.g. <input type=number value=3 min=-100 step=3> -> 5
// - The value should be the smaler matched value nearest to 0 if n < 0
// e.g. <input type=number value=3 min=-100 step=3> -> 2
//
// n is assumed as -n if step < 0.
ASSERT(isSteppable());
if (!isSteppable())
return;
ASSERT(n);
if (!n)
return;
StepRange stepRange(createStepRange(AnyIsDefaultStep));
// FIXME: Not any changes after stepping, even if it is an invalid value, may be better.
// (e.g. Stepping-up for <input type="number" value="foo" step="any" /> => "foo")
if (!stepRange.hasStep())
return;
EventQueueScope scope;
const Decimal step = stepRange.step();
int sign;
if (step > 0)
sign = n;
else if (step < 0)
sign = -n;
else
sign = 0;
String currentStringValue = element().value();
Decimal current = parseToNumberOrNaN(currentStringValue);
if (!current.isFinite()) {
current = defaultValueForStepUp();
const Decimal nextDiff = step * n;
if (current < stepRange.minimum() - nextDiff)
current = stepRange.minimum() - nextDiff;
if (current > stepRange.maximum() - nextDiff)
current = stepRange.maximum() - nextDiff;
setValueAsDecimal(current, DispatchNoEvent, IGNORE_EXCEPTION);
}
if ((sign > 0 && current < stepRange.minimum()) || (sign < 0 && current > stepRange.maximum()))
setValueAsDecimal(sign > 0 ? stepRange.minimum() : stepRange.maximum(), DispatchInputAndChangeEvent, IGNORE_EXCEPTION);
else {
if (stepMismatch(element().value())) {
ASSERT(!step.isZero());
const Decimal base = stepRange.stepBase();
Decimal newValue;
if (sign < 0)
newValue = base + ((current - base) / step).floor() * step;
else if (sign > 0)
newValue = base + ((current - base) / step).ceiling() * step;
else
newValue = current;
if (newValue < stepRange.minimum())
newValue = stepRange.minimum();
if (newValue > stepRange.maximum())
newValue = stepRange.maximum();
setValueAsDecimal(newValue, n == 1 || n == -1 ? DispatchInputAndChangeEvent : DispatchNoEvent, IGNORE_EXCEPTION);
if (n > 1)
applyStep(n - 1, AnyIsDefaultStep, DispatchInputAndChangeEvent, IGNORE_EXCEPTION);
else if (n < -1)
applyStep(n + 1, AnyIsDefaultStep, DispatchInputAndChangeEvent, IGNORE_EXCEPTION);
} else
applyStep(n, AnyIsDefaultStep, DispatchInputAndChangeEvent, IGNORE_EXCEPTION);
}
}
bool InputType::getAllowedValueStep(Decimal* step) const
{
StepRange stepRange(createStepRange(RejectAny));
*step = stepRange.step();
return stepRange.hasStep();
}
String RangeInputType::sanitizeValue(const String& proposedValue) const
{
StepRange stepRange(createStepRange(RejectAny));
const Decimal proposedNumericValue = parseToNumber(proposedValue, stepRange.defaultValue());
return serializeForNumberType(stepRange.clampValue(proposedNumericValue));
}
void InputType::stepUpFromLayoutObject(int n)
{
// The only difference from stepUp()/stepDown() is the extra treatment
// of the current value before applying the step:
//
// If the current value is not a number, including empty, the current value is assumed as 0.
// * If 0 is in-range, and matches to step value
// - The value should be the +step if n > 0
// - The value should be the -step if n < 0
// If -step or +step is out of range, new value should be 0.
// * If 0 is smaller than the minimum value
// - The value should be the minimum value for any n
// * If 0 is larger than the maximum value
// - The value should be the maximum value for any n
// * If 0 is in-range, but not matched to step value
// - The value should be the larger matched value nearest to 0 if n > 0
// e.g. <input type=number min=-100 step=3> -> 2
// - The value should be the smaler matched value nearest to 0 if n < 0
// e.g. <input type=number min=-100 step=3> -> -1
// As for date/datetime-local/month/time/week types, the current value is assumed as "the current local date/time".
// As for datetime type, the current value is assumed as "the current date/time in UTC".
// If the current value is smaller than the minimum value:
// - The value should be the minimum value if n > 0
// - Nothing should happen if n < 0
// If the current value is larger than the maximum value:
// - The value should be the maximum value if n < 0
// - Nothing should happen if n > 0
//
// n is assumed as -n if step < 0.
DCHECK(isSteppable());
if (!isSteppable())
return;
DCHECK(n);
if (!n)
return;
StepRange stepRange(createStepRange(AnyIsDefaultStep));
// FIXME: Not any changes after stepping, even if it is an invalid value, may be better.
// (e.g. Stepping-up for <input type="number" value="foo" step="any" /> => "foo")
if (!stepRange.hasStep())
return;
EventQueueScope scope;
const Decimal step = stepRange.step();
int sign;
if (step > 0)
sign = n;
else if (step < 0)
sign = -n;
else
sign = 0;
Decimal current = parseToNumberOrNaN(element().value());
if (!current.isFinite()) {
current = defaultValueForStepUp();
const Decimal nextDiff = step * n;
if (current < stepRange.minimum() - nextDiff)
current = stepRange.minimum() - nextDiff;
if (current > stepRange.maximum() - nextDiff)
current = stepRange.maximum() - nextDiff;
setValueAsDecimal(current, DispatchNoEvent, IGNORE_EXCEPTION);
}
if ((sign > 0 && current < stepRange.minimum()) || (sign < 0 && current > stepRange.maximum())) {
setValueAsDecimal(sign > 0 ? stepRange.minimum() : stepRange.maximum(), DispatchChangeEvent, IGNORE_EXCEPTION);
return;
}
if ((sign > 0 && current >= stepRange.maximum()) || (sign < 0 && current <= stepRange.minimum()))
return;
applyStep(current, n, AnyIsDefaultStep, DispatchChangeEvent, IGNORE_EXCEPTION);
}
void InputType::applyStep(const Decimal& current, int count, AnyStepHandling anyStepHandling, TextFieldEventBehavior eventBehavior, ExceptionState& exceptionState)
{
// https://html.spec.whatwg.org/multipage/forms.html#dom-input-stepup
StepRange stepRange(createStepRange(anyStepHandling));
// 2. If the element has no allowed value step, then throw an
// InvalidStateError exception, and abort these steps.
if (!stepRange.hasStep()) {
exceptionState.throwDOMException(InvalidStateError, "This form element does not have an allowed value step.");
return;
}
// 3. If the element has a minimum and a maximum and the minimum is greater
// than the maximum, then abort these steps.
if (stepRange.minimum() > stepRange.maximum())
return;
// 4. If the element has a minimum and a maximum and there is no value
// greater than or equal to the element's minimum and less than or equal to
// the element's maximum that, when subtracted from the step base, is an
// integral multiple of the allowed value step, then abort these steps.
Decimal alignedMaximum = stepRange.stepSnappedMaximum();
if (!alignedMaximum.isFinite())
return;
Decimal base = stepRange.stepBase();
Decimal step = stepRange.step();
EventQueueScope scope;
Decimal newValue = current;
const AtomicString& stepString = element().fastGetAttribute(stepAttr);
if (!equalIgnoringCase(stepString, "any") && stepRange.stepMismatch(current)) {
// Snap-to-step / clamping steps
// If the current value is not matched to step value:
// - The value should be the larger matched value nearest to 0 if count > 0
// e.g. <input type=number value=3 min=-100 step=3> -> 5
// - The value should be the smaller matched value nearest to 0 if count < 0
// e.g. <input type=number value=3 min=-100 step=3> -> 2
//
DCHECK(!step.isZero());
if (count < 0) {
newValue = base + ((newValue - base) / step).floor() * step;
++count;
} else if (count > 0) {
newValue = base + ((newValue - base) / step).ceil() * step;
--count;
}
}
newValue = newValue + stepRange.step() * count;
if (!equalIgnoringCase(stepString, "any"))
newValue = stepRange.alignValueForStep(current, newValue);
// 7. If the element has a minimum, and value is less than that minimum,
// then set value to the smallest value that, when subtracted from the step
// base, is an integral multiple of the allowed value step, and that is more
// than or equal to minimum.
// 8. If the element has a maximum, and value is greater than that maximum,
// then set value to the largest value that, when subtracted from the step
// base, is an integral multiple of the allowed value step, and that is less
// than or equal to maximum.
if (newValue > stepRange.maximum()) {
newValue = alignedMaximum;
} else if (newValue < stepRange.minimum()) {
const Decimal alignedMinimum = base + ((stepRange.minimum() - base) / step).ceil() * step;
DCHECK_GE(alignedMinimum, stepRange.minimum());
newValue = alignedMinimum;
}
// 9. Let value as string be the result of running the algorithm to convert
// a number to a string, as defined for the input element's type attribute's
// current state, on value.
// 10. Set the value of the element to value as string.
setValueAsDecimal(newValue, eventBehavior, exceptionState);
if (AXObjectCache* cache = element().document().existingAXObjectCache())
cache->handleValueChanged(&element());
}
void RangeInputType::handleKeydownEvent(KeyboardEvent* event) {
if (element().isDisabledOrReadOnly())
return;
const String& key = event->key();
const Decimal current = parseToNumberOrNaN(element().value());
DCHECK(current.isFinite());
StepRange stepRange(createStepRange(RejectAny));
// FIXME: We can't use stepUp() for the step value "any". So, we increase
// or decrease the value by 1/100 of the value range. Is it reasonable?
const Decimal step =
equalIgnoringCase(element().fastGetAttribute(stepAttr), "any")
? (stepRange.maximum() - stepRange.minimum()) / 100
: stepRange.step();
const Decimal bigStep =
std::max((stepRange.maximum() - stepRange.minimum()) / 10, step);
TextDirection dir = LTR;
bool isVertical = false;
if (element().layoutObject()) {
dir = computedTextDirection();
ControlPart part = element().layoutObject()->style()->appearance();
isVertical = part == SliderVerticalPart;
}
Decimal newValue;
if (key == "ArrowUp")
newValue = current + step;
else if (key == "ArrowDown")
newValue = current - step;
else if (key == "ArrowLeft")
newValue = (isVertical || dir == RTL) ? current + step : current - step;
else if (key == "ArrowRight")
newValue = (isVertical || dir == RTL) ? current - step : current + step;
else if (key == "PageUp")
newValue = current + bigStep;
else if (key == "PageDown")
newValue = current - bigStep;
else if (key == "Home")
newValue = isVertical ? stepRange.maximum() : stepRange.minimum();
else if (key == "End")
newValue = isVertical ? stepRange.minimum() : stepRange.maximum();
else
return; // Did not match any key binding.
newValue = stepRange.clampValue(newValue);
if (newValue != current) {
EventQueueScope scope;
TextFieldEventBehavior eventBehavior = DispatchInputAndChangeEvent;
setValueAsDecimal(newValue, eventBehavior, IGNORE_EXCEPTION);
if (AXObjectCache* cache = element().document().existingAXObjectCache())
cache->handleValueChanged(&element());
}
event->setDefaultHandled();
}