UITree walk does not pass
Hello Forum,
I am using:
Seam 2.0.1.GA
Richfaces 3.1.4.GA
I am trying to use UITree.walk() with DataVistitor to expand a tree
from a selected root, when the operator clicks a context menu.
Everything seems to work as expected except that
the argument parameter (second parm) is always null when my process() method is called.
I am trying to pass the UITree as the "argument" so that I can call
tree.queueNodeExpand( treeRowKey ) for each of the nodes.
The first parm is always properly set to an instance of treeRowKey, but
the second parm ("argument") is alwya null.
Am I missing something obvious?
Any hints will be greatly appreciated...
( I can resort to setting the UITree in my Expander instance,
so this is not a show stopper at this point... )
Thanks, PdP
My xhtml
<rich:tree switchType="ajax" stateAdvisor="#{subnetTreeImpl.alarmTreeStateAdvisor}" binding="#{subnetTreeImpl.alarmTree}" id="alarmTree" >
<rich:recursiveTreeNodesAdaptor roots="#{treeData}" var="node" nodes="#{node.children}" >
<rich:treeNode rendered="#{node.nodeType == node.nodeTypeSubnet}" iconLeaf="/img/subnet16.png" icon="/img/subnet16.png">
<s:link value="#{node.description}" styleClass="#{node.styleClass}"
action="#{activeAlarmsImpl.setSubnetFilter}" >
<f:param name="id" value="#{node.id}"/>
</s:link>
<rich:contextMenu disableDefaultMenu="true" event="oncontextmenu" attached="true" submitMode="ajax">
<rich:menuItem value="Expand"
rerender="subnetTreePanel"
action="#{subnetTreeImpl.expandSubTree}">
<s:conversationId/>
</rich:menuItem>
<rich:menuItem value="Collapse"
rerender="subnetTreePanel"
action="#{subnetTreeImpl.collapseSubTree}">
<s:conversationId/>
</rich:menuItem>
</rich:contextMenu>
</rich:treeNode>
</rich:recursiveTreeNodesAdaptor>
</rich:tree>
Relevant parts of my backing bean
private final static TreeRange RANGE_UNCONSTRAINED = new TreeRange()
{
public boolean processChildren(TreeRowKey rowKey) {
return true;
}
public boolean processNode(TreeRowKey rowKey) {
return true;
}
};
private static class Expander implements DataVisitor
{
public void process(javax.faces.context.FacesContext faces,java.lang.Object obj1, java.lang.Object obj2)
{
if ( obj1 != null ) {
TreeRowKey treeRowKey = (TreeRowKey) obj1;
System.out.println ("DataVisitor rowKey" + treeRowKey );
}
if ( obj2 != null )
System.out.println ("DataVisitor obj2 " + obj2.getClass() );
else
System.out.println ("DataVisitor obj2 " + obj2);
}
}
public String expandSubTree()
{
try {
Object key = alarmTree.getRowKey();
TreeRowKey treeRowKey = (TreeRowKey) key;
alarmTree.walkModel (javax.faces.context.FacesContext.getCurrentInstance(), new Expander(), RANGE_UNCONSTRAINED, treeRowKey, alarmTree );
}
catch (Exception e) {
e.printStackTrace();
}
return null;
}
