Value change listeners are fired during validation. What happens:
1) decode 1a) select one choice decoded - submitted value set 1b) input text decoded - submitted value set 2) validation 2a) select one choice converts submitted value 2b) select one choice validates value 2c) select one choice queues value change event (phase = ANY) 2d) input text converts submitted value 2e) input text validates value 2f) input text queues value change event (phase = ANY) 2g) value change events broadcast 3) update model 3a) select one choice updates value 3b) input text updates value As you can see, it is useless to set values in a value change listeners that have UIInput components updating them. In fact, it is very dangerous to make any changes during a value change event, because at that phase, there is absolutely no guarantee that the updating of the model will ever happen. Therefore if your bean sets a property and something short circuits the lifecycle, then the "transaction" is broken. I would suggest one of: 1) use the myfaces tomahawk sandbox valueChangeNotifier that runs during update, not validation: http://myfaces.apache.org/sandbox/tlddoc/s/valueChangeNotifier.html 2) use f:setPropertyActionListener instead of using value change events 3) use tr:subForm around the controls to make sure that when the selectOneChoice is submitted, the inputText is not submitted (note that I don't think that this solution will work for browsers that do not support AJAX) -Andrew On Tue, Jul 8, 2008 at 10:14 PM, Richard Yee <[EMAIL PROTECTED]> wrote: > Hi, > I'm having a problem updating the value of a inputText component from > the value change listener of a selectOneChoice component. I have the > following in my jspx page: > > <f:view> > <tr:document title="Index"> > <trh:body> > <tr:form> > <tr:selectOneChoice id="memberSelect" > value="#{myBacking.selectValue}" > valueChangeListener="#{myBacking.changeListener}" > autoSubmit="true" > > <tr:selectItem label="Item 1" value="1"/> > <tr:selectItem label="Item 2" value="2"/> > <tr:selectItem label="Item 3" value="3"/> > </tr:selectOneChoice> > <tr:inputText value="#{myBacking.line2}" label="Line 2:" > partialTriggers="memberSelect" id="line2"/> > > </tr:form> > </trh:body> > </tr:document> > </f:view> > > My value change listener in my backing bean is > public void changeListener(ValueChangeEvent evt) { > setLine2("XXXX"); } > } > When I run the page, if I only change the value of selectOneChoice, > then "XXXX" gets populated in the input text box as I expected. > However, if I type something in the inputText component and then > change the value of the selectOneChoice, the value that I typed > remains in the input text box. If I then change the value of the > select box again, then "XXXX" gets populated in the text box. I'm > wondering why it takes a second time through the value Change Listener > for the input text component to be updated with the value that is set > in the listener method. > > Thanks for any help or suggestions in advance, > > Richard >
