scrollTo method
scroll to specific date's position
isEnableAnimation
default set as true, jump with animation
Implementation
void scrollTo(DateTime dateTime, [bool isEnableAnimation = true]) {
if (isWithinRange(dateTime) && realStartDate != null) {
int index = dateTime.difference(realStartDate!).inDays;
_scrollToSpecificDateByIndex(index);
} else {
//out of range do nothing
}
}