Returns the next number in the sequence.
Returns the next number in the sequence.
value + stepSize
or null
if the sum
exceeds maximum
.
Returns the previous number in the sequence.
Returns the previous number in the sequence.
value - stepSize
, or
null
if the sum is less
than minimum
.
Sets the current value for this sequence.
Sets the current value for this sequence. If value
is
null
, or not an Option
, an
IllegalArgumentException
is thrown. No
bounds checking is done here.
This method fires a ChangeEvent
if the value has changed.
the current (non null
) Option
for this sequence
if value
is
null
or not a Option