public void ensureSelectionVisible(boolean forceTopSelection) {
if (isSelectionVisible() && !forceTopSelection) {
return;
}
if (!forceTopSelection) {
ListScrollingUtil.ensureIndexIsVisible(myList, myList.getSelectedIndex(), 1);
return;
}
// selected item should be at the top of the visible list
int top = myList.getSelectedIndex();
if (top > 0) {
top--; // show one element above the selected one to give the hint that there are more
// available via scrolling
}
int firstVisibleIndex = myList.getFirstVisibleIndex();
if (firstVisibleIndex == top) {
return;
}
ListScrollingUtil.ensureRangeIsVisible(
myList, top, top + myList.getLastVisibleIndex() - firstVisibleIndex);
}
private boolean isSelectionVisible() {
return ListScrollingUtil.isIndexFullyVisible(myList, myList.getSelectedIndex());
}