// console.log('current ' + currentIndex);
// console.log('least visible ' + leastVisible + ' most visible ' + mostVisible);
if (currentIndex < leastVisible) {
+ this.willChangeToIndex(leastVisible);
this.setCurrentIndex(leastVisible);
} else if (currentIndex > mostVisible) {
+ this.willChangeToIndex(mostVisible);
this.setCurrentIndex(mostVisible);
}