void DateTimeNumericFieldElement::stepUp() {
int newValue = roundUp(m_hasValue ? m_value + 1 : defaultValueForStepUp());
if (!m_range.isInRange(newValue))
newValue = roundUp(m_range.minimum);
m_typeAheadBuffer.clear();
setValueAsInteger(newValue, DispatchEvent);
}
void DateTimeNumericFieldElement::stepUp()
{
if (m_hasValue)
setValueAsInteger(m_value == m_range.maximum ? m_range.minimum : clampValue(m_value + 1), DispatchEvent);
else
setValueAsInteger(defaultValueForStepUp(), DispatchEvent);
}
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);
}
}
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);
}
