Page Template Popup with Dynamic Region TaskFlow

Question

Hi.
I have a Page Template that is used extensively in my application to provide a consistent explorer panel containing tree links to various pages in the application. I'm trying now to enable users to edit configuration via a tree link. I would like to implement this as a Popup in the page template which contains a dynamic region that contains a bounded Task FLow (so I can control the transaction for the edit activity). I'm running into all manner of issues...
The Tree node is defined as follows:
<f:facet name="cognition_model_view.viewRepListVO">
       <af:group id="pt_g4">
          <af:commandImageLink id="pt_ot15" text="#{node.Viewname}"
                                            action="callRouter"
                                            actionListener="#{backingBeanScope.templateBacking.viewsGoActionListener}"
                                            icon="/pics/folder-icon.png"
                                            shortDesc="View: #{node.Viewdesc} | Filter: #{node.Filtername}"
                                            partialSubmit="true"/>
          <af:commandImageLink id="pt_ot16"
                                            icon="/pics/edit1.png"
                                            shortDesc="Edit View Config"
                                            partialSubmit="true">
                 <af:setPropertyListener from="#{node.Appname}"
                                                   to="#{backingBeanScope.templateBacking.editViewAppName}"
                                                   type="action"/>
                 <af:setPropertyListener from="#{node.Viewname}"
                                                   to="#{backingBeanScope.templateBacking.editViewName}"
                                                   type="action"/>
                 <af:setPropertyListener to="#{backingBeanScope.templateBacking.editViewType}"
                                                   from="#{node.Sourceview}"
                                                   type="action"/>
                 <af:showPopupBehavior popupId="::pt_p_edView"
                                                   triggerType="click"/>
          </af:commandImageLink>
        </af:group>
</f:facet>The property listeners are to hold values that will be passed as parameters to the region's task flow.
The Popup is defined here:
<af:popup id="pt_p_edView" contentDelivery="lazyUncached"
              popupCanceledListener="#{backingBeanScope.editPopupTFHandler.cancelPopup}"
              popupFetchListener="#{backingBeanScope.editPopupTFHandler.showPopup}"
              binding="#{backingBeanScope.editPopupTFHandler.editPopup}">
        <af:panelWindow id="pt_pw1"
                        title="#{backingBeanScope.templateBacking.editViewName} - Edit View Configuration"
                        contentHeight="250" contentWidth="500" stretchChildren="first" modal="true">
            <af:region value="#{bindings.dynamicRegion1.regionModel}" id="pt_r1"/>
        </af:panelWindow>
    </af:popup>The taskflow binding for the template is as follows:
    <taskFlow id="dynamicRegion1" taskFlowId="${backingBeanScope.editPopupTFHandler.dynamicTaskFlowId}" xmlns="http://xmlns.oracle.com/adf/controller/binding">
      <parameters>
        <parameter id="inputApplicationName" value="#{backingBeanScope.templateBacking.editViewAppName}"/>
        <parameter id="inputViewType" value="#{backingBeanScope.templateBacking.editViewType}"/>
        <parameter id="inputViewName" value="#{backingBeanScope.templateBacking.editViewName}"/>
      </parameters>
    </taskFlow>The managed bean to hold the dynamic taskflowId (editPopupTFHandler) is referenced in the adfc-config.xml file at "backingBean" scope, and looks like this:
public class editPopupTFHandler {
    private String taskFlowId = "/WEB-INF/editViews/editViewsTF.xml#editViewsTF";
    private String emptyTaskFlowId = "";
    private String currentTaskFlowId = taskFlowId;
    private RichPopup editPopup;
    public editViewPopupTFHandler() {
    public String getDynamicTaskFlowId() {
        return currentTaskFlowId;
    public void cancelPopup(PopupCanceledEvent pce) {
        currentTaskFlowId = emptyTaskFlowId;
    public void showPopup (PopupFetchEvent popupFetchEvent) {
           currentTaskFlowId = taskFlowId;
    public void setEditPopup(RichPopup editPopup) {
        this.editPopup = editPopup;
    public RichPopup getEditPopup() {
        return editPopup;
}If I don't define the bean at backingBean scope, I get a Target Unreachable error from any page using the template.
When I attempt to use the link to the popup, the popup displays but the region content does not. Is this a scoping issue?
Additionally, after pressing combinations of the 2 commandimagelink components, the first link stops submitting... this may be a side-effect of the region display though?
Again, as I'm quite new to ADF I don't know how to overcome or avoid these issues, or whether there is a better method to achieve an edit capability in a popup window from a page template.
Thanks for your help. I'm using JDeveloper 11.1.2.1.0 by the way.

Answer 1

Hello again. I've managed to get the dynamic region displaying once I restarted JDeveloper and re-created the Region and backingBean. This has happened before - is JDeveloper known to get "confused" (like me!) in this way?
There are still issues though. The backingBean contains a PopupCanceledListener as follows:
    public void cancelPopup(PopupCanceledEvent pce) {
        System.out.println("CANCEL POPUP - Current Task FLow now empty");
        currentTaskFlowId = emptyTaskFlowId;  // where emptyTaskFlowId = ""
        System.out.println("CANCEL currentTaskFlowId = " + currentTaskFlowId);
    }Simple enough, but the dynamicTaskFlowId is not holding its cleared value. Subsequent call to the getter shows a non-null value...?
The Popup has the ContentDelivery="lazyUncached" and ChildCreation="deferred". The TaskFlow Binding has Refresh="default" and activation="deferred". With these property values the Popup is displays the correct value on its first use but then keeps that same value on any subsequent selection. I don't know whether this is because of the TaskFlow not correctly resetting or something else...
Can anyone help me please. This is beyond frustrating. The behaviour of these various property settings is not at all predictable for me... Thanks.