Trinidad/TreeTable and how to determine selected rows
I am using the Trinidad TreeTable component. We present the component and the user can select a number of rows. When an commandButton is selected, we are trying to figure out a good way to get the selected rows in our method call.
Here's what we have:
Facelets fragment
<tr:form id="frm">
<tr:messages/>
<tr:panelHorizontalLayout>
<f:facet name="separator"><tr:spacer width="8px"/></f:facet>
<tr:panelHeader text="Courses">
<tr:panelButtonBar>
<tr:commandButton text="Save" action="#{lister.save}" id="btn_save"/>
</tr:panelButtonBar>
</tr:panelHeader>
</tr:panelHorizontalLayout>
<tr:treeTable var="foo"
value="#{lister.tree}"
rowSelection="multiple"
selectionListener="#{lister.selectionBindingMethod}">
<f:facet name="nodeStamp">
<tr:column>
<f:facet name="header">
<tr:outputText value="Name"/>
</f:facet>
<tr:outputFormatted value="#{foo.name} : #{foo.type} : #{foo.id}"/>
</tr:column>
</f:facet>
</tr:treeTable>
</tr:form>
And the Seam component is:
@Name("lister")
@Stateful
@LoggedIn
public class CourseLister implements ICourseLister {
TransferObject root;
private TreeModel tree;
public String save(){
System.out.println("SAVE DONE>>>>");
return null;
}
public String showCourses(){
//<snip creation of a transfer object that contains the tree/>
//convert the root object into a Trinidad TreeModel
tree = new ChildPropertyTreeModel(root, "children");
return "viewList";
}
public void selectionBindingMethod(SelectionEvent event){
System.out.println("selectionBindingMethod["+event+"]");
UIXCollection table = (UIXCollection)event.getSource();
for(Iterator<Object> i = ((UIXTree)table).getSelectedRowKeys().iterator(); i.hasNext(); ){
Object n = i.next();
AppUtils.LOG.fatal("KEYSET ITERATION["+n+"] class["+n.getClass().getName()+"]");
table.setRowKey(n);
TransferObject to = (TransferObject)table.getRowData();
}
}
public TreeModel getTree(){
AppUtils.LOG.fatal("GET TREE............");
return tree;
}
}
Since we can not bind the tree component to the class (this is a conversation scoped bean), we are using the selectionListener.
However, the listener is not getting called until *after* the commandButton lister.save action is called (that is the button that is pressed). Therefore, I don't have the information in the save method about what rows are selected.
Thoughts on other approaches to try?
Seam 1.2.p1
MyFaces
jboss 4.0.4
Thanks,
Chris....
