/**
* Sets the active item. The component must be of type <code>Item</code> to be activated. All
* other types are ignored.
*
* @param c the component to set active
* @param autoExpand true to auto expand the item
*/
public void setActiveItem(Component c, boolean autoExpand) {
if (c == null) {
deactiveActiveItem();
return;
}
if (c instanceof Item) {
Item item = (Item) c;
if (item != activeItem) {
deactiveActiveItem();
this.activeItem = item;
item.activate(autoExpand);
item.el().scrollIntoView(ul.dom, false);
focus();
if (GXT.isFocusManagerEnabled()) {
FocusFrame.get().frame(item);
Accessibility.setState(getElement(), "aria-activedescendant", item.getId());
}
} else if (autoExpand) {
item.expandMenu(autoExpand);
}
}
}
protected void deactiveActiveItem() {
if (activeItem != null) {
activeItem.deactivate();
activeItem = null;
}
if (GXT.isFocusManagerEnabled()) {
FocusFrame.get().unframe();
Accessibility.setState(getElement(), "aria-activedescendant", "");
}
}
protected void onFocus(ComponentEvent ce) {
if (GXT.isFocusManagerEnabled() && !GXT.isIE) {
FocusFrame.get().frame(this);
}
}
protected void onBlur(ComponentEvent ce) {
if (GXT.isFocusManagerEnabled()) {
FocusFrame.get().unframe();
}
}