[Trinidad] treeTable: Navigation fails when rootNodeRendered="false"

[Dirk Krummacker]

I have a simple JSP page with only a commandButton and a treeTable.
The commandButton is wired to an action listener method that populates
a list with nodes and places it into page flow scope. This node list
serves as the treeTable's model. There is a column in the treeTable
displaying a commandLink, clicking on this link causes an action that
is navigating to a second page.

When I use the default rootNodeRendered="true", this page works as
expected: First the treeTable is empty. Clicking the button fills it,
and now I can open and close all nodes. If I click on a commandLink in
the treeTable, I am taken to the correct page. Everything is fine.

However if I now set the treeTable's attribute
rootNodeRendered="false" (and change nothing otherwise), the
commandLink navigation stops working. I still can open/close nodes,
but any click on a commandLink just causes the page to refresh.

What is more, if I now click on "Expand all", the commandLinks
suddenly start working again, just as if this "Expand All" click
"repaired" the treetable.

The bean is in request scope. I am using Apache MyFaces Core 1.1.5 and
Trinidad 1.0.7.

Is there something I have to do to make this test case work even when
I want rootNodeRendered="false"? Or is this a bug? Or is there a
totally different approach that allows me to hide the root node and
have navigation from the columns at the same time?

Thanks in advance,

Dirk

----- treeTable.jsp -----

<%@ page pageEncoding="UTF-8" contentType="text/html; charset=UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsf/core"; prefix="f"%>
<%@ taglib uri="http://myfaces.apache.org/trinidad"; prefix="tr"%>
<%@ taglib uri="http://myfaces.apache.org/trinidad/html"; prefix="trh"%>
<f:view>
        <trh:html>
        <trh:head title="TreeTable" />
        <trh:body>
                <tr:form>
                        <tr:commandButton text="Populate"
                                
actionListener="#{treeTableBean.actionListener}" />
                        <tr:treeTable value="#{treeTableBean.treeModel}" 
var="node"
rootNodeRendered="false">
                                <f:facet name="nodeStamp">
                                        <tr:column sortable="true">
                                                <f:facet name="header">
                                                        <tr:outputText 
value="Name" />
                                                </f:facet>
                                                <tr:commandLink 
text="#{node.name}" action="#{node.navigate}" />
                                        </tr:column>
                                </f:facet>
                        </tr:treeTable>
                </tr:form>
        </trh:body>
        </trh:html>
</f:view>

----- TreeTableBean.java -----

public class TreeTableBean {

    public TreeModel getTreeModel() {

        RequestContext requestContext = RequestContext.getCurrentInstance();
        Map<String, Object> pageFlowScope = requestContext.getPageFlowScope();

        List<Node> contents = (List<Node>) pageFlowScope.get("contents");
        if (contents == null) {
            contents = Collections.emptyList();
            pageFlowScope.put("contents", contents);
        }

        return new ChildPropertyTreeModel(contents, "children");
    }

    public void actionListener(ActionEvent event) {

        List<Node> noChildren = Collections.emptyList();
        List<Node> childrenOfRoot = new ArrayList<Node>();

        List<Node> childrenOfA = new ArrayList<Node>();
        childrenOfA.add(new Node("aa", noChildren));
        childrenOfA.add(new Node("ab", noChildren));
        childrenOfA.add(new Node("ac", noChildren));
        childrenOfRoot.add(new Node("a", childrenOfA));

        List<Node> childrenOfB = new ArrayList<Node>();
        childrenOfB.add(new Node("ba", noChildren));
        childrenOfB.add(new Node("bb", noChildren));
        childrenOfB.add(new Node("bc", noChildren));
        childrenOfRoot.add(new Node("b", childrenOfB));

        Node root = new Node("root", childrenOfRoot);
        List<Node> contents = new ArrayList<Node>();
        contents.add(root);

        RequestContext requestContext = RequestContext.getCurrentInstance();
        Map<String, Object> pageFlowScope = requestContext.getPageFlowScope();
        pageFlowScope.put("contents", contents);
    }

    public static class Node implements Serializable {

        private static final long serialVersionUID = 1L;

        private String name;

        private List<Node> children;

        public Node(String name, List<Node> children) {
            this.name = name;
            this.children = children;
        }

        public String getName() {
            return name;
        }

        public List<Node> getChildren() {
            return children;
        }

        public String navigate() {
            return "target";
        }
    }
}

----- faces-config.xml -----

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE faces-config PUBLIC
    "-//Sun Microsystems, Inc.//DTD JavaServer Faces Config 1.1//EN"
    "http://java.sun.com/dtd/web-facesconfig_1_1.dtd";>

<faces-config>
        <application>
                
<default-render-kit-id>org.apache.myfaces.trinidad.core</default-render-kit-id>
        </application>
        <managed-bean>
                <managed-bean-name>treeTableBean</managed-bean-name>
                <managed-bean-class>TreeTableBean</managed-bean-class>
                <managed-bean-scope>request</managed-bean-scope>
        </managed-bean>
        <navigation-rule>
                <display-name>treeTable</display-name>
                <from-view-id>/treeTable.jsp</from-view-id>
                <navigation-case>
                        <from-outcome>target</from-outcome>
                        <to-view-id>/target.jsp</to-view-id>
                </navigation-case>
        </navigation-rule>
</faces-config>

----- end -----