Get Binding and Iterator from UIComponent

Question

I have a pageTemplate with a reusable menu which contains: navigation buttons (previous, next, ... records), commit and rollback operations, and create/Delete Record.
My pages could contain components which have more than one IteratorBinding, for example a couple of tables master/detail.
My first idea was this:
I have to add for each BindingIterator, all record actions with the same pattern name: <operationName><IteratorName>, then I could execute the correct operation in the actionListener for each button with a simple search on the pageTemplateBean.
    public void onFirstClicked(ActionEvent actionEvent) {
        BindingContext bctx = BindingContext.getCurrent();
        DCBindingContainer bindings = (DCBindingContainer)bctx.getCurrentBindingsEntry();
        String iteratorName = (String) JSFUtils.resolveExpression("#{viewScope.focusComponentIteratorName}");
        String operationName = "First"+iteratorName;
        OperationBinding oper = (OperationBinding)bindings.get(operationName);
        oper.execute();
For this, I have to Know which is the last UIComponent which had the focus and get its Binding Iterator.
I have added a ClientListener and ServerListener programmatically for get the UIComponent which has the focus in each moment. (pageLoad with f:event JSF2).
JavaScript code in PageTemplate:
<af:resource type="javascript">
      function clientFocusMethodCall(event) {
          component = event.getSource();
          AdfCustomEvent.queue(component, "focusComponentEvent", null, true);         
          event.cancel();
    </af:resource>
Create ClientListener and ServerListener programmatically:
    private void addFocusListenerComponent(UIComponent c) {
        ClientListenerSet cls = new ClientListenerSet();
        cls.addListener("focus","clientFocusMethodCall");
        cls.addCustomServerListener("focusComponentEvent", JSFUtils.getClientMethodExpression("#{pageFragmentTemplateBean.handleFocusComponentRequest}"));
        //----------------------- INPUT --------------------
        if (c instanceof RichInputText) {            
            RichInputText it = (RichInputText)c;
            it.setClientComponent(true);           
            it.setClientListeners(cls);
        } else if(c instanceof RichSelectOneChoice) {
            RichSelectOneChoice it = (RichSelectOneChoice)c;
            it.setClientComponent(true);
            it.setClientListeners(cls);
After that, I have this Event, which is launched after every focus event.
public void handleFocusComponentRequest(ClientEvent event){     
        System.out.println("handleFocusComponentRequest "+event.getComponent().getClientId());
        System.out.println("---"+event.getParameters().get("payload")); 
        UIComponent c = event.getComponent();       
The next step is get the AttributeBinding and IteratorBinding and save them in ViewScope variables, but I dont Know how get it.
PS: Commit and Rollback operations are easier since the are common to the ApplicationModule.
jdeveloper 12c, 12.1.2.0.0

Answer 1

Hi Frank.
I had found the second strategy but I didn't know how can update references at runtime.
My application has a MDI Desktop, in that I could have few programs opened at same time.
Each programa had a unique menu with the navigation and record operations buttons.
Now I will explain my issue with and example:
In a region, rendered a PageFragment where is showing a Master Detail tables. For this I'll have exposed a Previous Record operation for the Master and the Detail (and the others buttons too).
When a inputText from Master take the focus, the "previous" button have to reference to the Previous Operatiron of Master Iterator. Same situation when focus is in a inputText of detail Iterator.
Then the previous button have to dynamically change the operation reference after each focus action.
I think I am really close to the resolution, but I dont Know how can I get the Iterator binding for each UIComponent rendered in the page.
Thanks in advance.