protected void onMouseMove(ComponentEvent ce) {
Component c = findItem(ce.getTarget());
if (c != null && c instanceof Item) {
Item item = (Item) c;
if (activeItem != item && item.canActivate && item.isEnabled()) {
setActiveItem(item, true);
}
}
}
protected Item tryActivate(int start, int step) {
for (int i = start, len = getItemCount(); i >= 0 && i < len; i += step) {
Component c = getItem(i);
if (c instanceof Item) {
Item item = (Item) c;
if (item.canActivate && item.isEnabled()) {
setActiveItem(item, false);
return item;
}
}
}
return null;
}
protected void onMouseOver(ComponentEvent ce) {
EventTarget from = ce.getEvent().getRelatedEventTarget();
if (from == null
|| (Element.is(from) && !DOM.isOrHasChild(getElement(), (Element) Element.as(from)))) {
Component c = findItem(ce.getTarget());
if (c != null && c instanceof Item) {
Item item = (Item) c;
if (activeItem != item && item.canActivate && item.isEnabled()) {
setActiveItem(item, true);
}
}
}
}