Only 1 expanded node each time - MenuTree

Question

I use a <af:menuTree> component with 2 level nodes.
How can I put only one expanded node each time (of first level). By other words, when I expand 1 node (first level) the others expanded nodes must not be expanded automatically ?
Thanks,
Sérgio Morais

Answer 1

Sergio,
managed bean:
package adf.test;
import java.util.Set;
import oracle.adf.view.faces.component.core.nav.CoreMenuTree;
import oracle.adf.view.faces.event.DisclosureEvent;
import oracle.adf.view.faces.model.PathSet;
public class MenuTreeBean {
public MenuTreeBean() {
public void onDisclosure(DisclosureEvent disclosureEvent) {
CoreMenuTree cmt = (CoreMenuTree) disclosureEvent.getSource();
Object rwKey = cmt.getRowKey();
//quick and dirty check for tree level
if (rwKey.toString().indexOf(",") == -1){
PathSet ps = cmt.getTreeState();
Set ks = ps.getKeySet();
ks.clear();
ks.add(rwKey);
JSF tree
<af:menuBar id="mbar">
<af:menuTree value="#{bindings.DepartmentsView1.treeModel}" var="node"
disclosureListener="#{menuTreeBean.onDisclosure}"
id="menutree">
<f:facet name="nodeStamp">
<af:outputText value="#{node}" id="nodeId"/>
</f:facet>
</af:menuTree>
</af:menuBar>
Frank