onDecrease property
VoidCallback?
get
onDecrease
Called when assistive technology decreases the node's value.
Implementation
VoidCallback? get onDecrease => _onDecrease;
set
onDecrease
(VoidCallback? value)
Implementation
set onDecrease(VoidCallback? value) {
_assertConvenience();
if (value == _onDecrease) return;
_onDecrease = value;
_bump();
}