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One more issue I'd like to bring up: it appears that when using <f:valueChangeListener action="..." /> the value of the object provided has not yet been updated in the model, hence, the value is the old value, not the new value.<BR>
<BR>
When using <f:actionListener> on the button submitting the values, the new value is populated into the model instead... which is the behavior I would expect.<BR>
<BR>
Pardon the probably obvious question...<BR>
<BR>
Is there an contract with valueChangeListeners that states they fire before model updates? I see in the spec that it fires: "when a new local value has been created, and has passed all validations," but nothing about if the model has been updated or not.<BR>
<BR>
--Lincoln<BR>
<BR>
On Tue, 2009-09-08 at 09:59 -0700, Ryan Lubke wrote:
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<PRE>
On 9/7/09 6:06 PM, Andy Schwartz wrote:
> Thanks Lincoln. I haven't had time to debug this, but I have a theory
> about what might be happening. In your sample:
>
>> <a:editText value="#{cc.attrs.task.text}"
>> rendered="#{!cc.attrs.disabled}">
>> *<f:actionListener for="submit"
>> action="#{taskController.saveTaskAjax(cc.attrs.story,
>> cc.attrs.task)}" /> *
>> </a:editText>
>
> We expect "cc" to resolve to the containing composite component (ie.
> to the <socialpm:taskBlock> component). I wouldn't be surprised if
> what is actually happening is that "cc" is being resolved to the
> <a:editText> composite component instead.
Yep, that's what is happening.
> One reason why I suspect this might be happening is that I know that
> Ryan has investigated/resolved similar problems not too long ago.
The problem we resolved was the passing of #{cc.attrs} attributes
between nested composite components.
For this case, the spec recommends using cc.parent.attrs.story and
cc.parent.attrs.task, where parent resolves
to the nearest composite component parent of the current composite
component.
> Another reason why I am suspicious about this is because we have faced
> similar issues in our own (ADF Faces) declarative component solution.
> This stuff can get tricky. :-)
>
> Hey Ryan -
>
> Does this problem look familiar? Any thoughts on this?
>
> Andy
>
> Lincoln Baxter, III wrote:
>> Hey Andy, here you go:
>>
>> In the mean time I'm going to sign up for the dev lists.
>>
>> ----------------------------------------------------------------------
>> Using:
>> <f:actionListener for="submit"
>> action="*#{taskController.saveTaskAjax(cc.attrs.story,
>> cc.attrs.task)}*" />
>>
>> *#{taskController.saveTaskAjax(cc.attrs.story, cc.attrs.task)}* =
>> null values passed to method
>> *#{taskController.saveTaskAjax(currentStoryBean.story, task)}* =
>> correct values resolved, assuming currentStoryBean.story and task
>> are both in the EL/page scope somewhere.
>>
>>
>> ----------------------------------------------------------------------
>> *CC Impl:*
>>
>>
>> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
>> "<A HREF="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd</A>">
>> <html xmlns="<A HREF="http://www.w3.org/1999/xhtml">http://www.w3.org/1999/xhtml</A>"
>> xmlns:h="<A HREF="http://java.sun.com/jsf/html">http://java.sun.com/jsf/html</A>"
>> xmlns:f="<A HREF="http://java.sun.com/jsf/core">http://java.sun.com/jsf/core</A>"
>> xmlns:a="<A HREF="http://java.sun.com/jsf/composite/ajax">http://java.sun.com/jsf/composite/ajax</A>"
>> xmlns:cc="<A HREF="http://java.sun.com/jsf/composite">http://java.sun.com/jsf/composite</A>">
>> <cc:interface>
>> <cc:attribute name="story" required="true" type="Object" />
>> <cc:attribute name="task" required="true" type="Object" />
>> <cc:attribute name="disabled" required="false" type="Boolean"
>> default="false" />
>> <cc:insertChildren />
>> </cc:interface>
>>
>> <cc:implementation>
>> <h:outputStylesheet name="socialpm/socialpm.css" />
>> <h:panelGroup id="taskBlock" layout="block" class="box-bordered p5
>> #{cc.attrs.styleClass} taskBlock_#{cc.attrs.task.status}"
>> style="#{cc.attrs.style}">
>>
>> <div class="m5l" style="margin-right: 25px;" >
>> <h:outputText value="#{cc.attrs.task.text}"
>> rendered="#{cc.attrs.disabled}"/>
>> <a:editText value="#{cc.attrs.task.text}"
>> rendered="#{!cc.attrs.disabled}">
>> *<f:actionListener for="submit"
>> action="#{taskController.saveTaskAjax(cc.attrs.story,
>> cc.attrs.task)}" /> *
>> </a:editText>
>> </div>
>> </cc:implementation>
>> </html>
>>
>>
>> ----------------------------------------------------------------------
>> *consuming page code:* <-- this is where task is defined in the
>> UI:Repeat, so it is in scope
>>
>> <!DOCTYPE html
>> PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
>> "<A HREF="http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd</A>">
>> <html xmlns="<A HREF="http://www.w3.org/1999/xhtml">http://www.w3.org/1999/xhtml</A>"
>> xmlns:c="<A HREF="http://java.sun.com/jsp/jstl/core">http://java.sun.com/jsp/jstl/core</A>"
>> xmlns:f="<A HREF="http://java.sun.com/jsf/core">http://java.sun.com/jsf/core</A>"
>> xmlns:h="<A HREF="http://java.sun.com/jsf/html">http://java.sun.com/jsf/html</A>"
>> xmlns:socialpm="<A HREF="http://java.sun.com/jsf/composite/socialpm">http://java.sun.com/jsf/composite/socialpm</A>"
>> xmlns:pretty="<A HREF="http://ocpsoft.com/prettyfaces">http://ocpsoft.com/prettyfaces</A>"
>> xmlns:ui="<A HREF="http://java.sun.com/jsf/facelets">http://java.sun.com/jsf/facelets</A>" xml:lang="en" lang="en">
>>
>> <ui:composition>
>> <h:form id="tasksForm">
>> <c:if test="#{empty currentStoryBean.story.tasks}">
>> <div class="m5">This story has no tasks. That could be a problem
>> later...</div>
>> </c:if>
>>
>> <ui:repeat value="#{currentStoryBean.story.tasks}" var="task">
>> <socialpm:taskBlock task="#{task}" story="#{currentStoryBean.story}"
>> members="#{currentProjectBean.project.activeMembers}"
>> disabled="#{!authorizationBean.isMember or
>> !currentStoryBean.story.open}"
>> deletable="true" styleClass="m5t" refreshOnSave="false" />
>> </ui:repeat>
>> </h:form>
>> </ui:composition>
>> </html>
>>
>>
>>
>>
>> On Sat, 2009-09-05 at 15:23 -0400, Andy Schwartz wrote:
>>> Hey Lincoln -
>>>
>>> Lincoln Baxter, III wrote:
>>> > First, please let me know if there is a better place to ask JSF
>>> Dev > related questions.
>>> >
>>>
>>> I suppose the Mojarra dev list might be the right place for
>>> implementation questions:
>>>
>>> <A HREF="https://javaserverfaces.dev.java.net/mailinglists.html">https://javaserverfaces.dev.java.net/mailinglists.html</A>
>>>
>>> Though personally I am fine with you asking here. :-)
>>>
>>> Could you send along your composite component implementation (and
>>> perhaps a snippet from the consuming page)? Just want to make sure
>>> I understand the use case.
>>>
>>> Andy
>>>
>>>
>> --
>> *Lincoln Baxter, III*
>> Co-Founder of OcpSoft <<A HREF="http://ocpsoft.com">http://ocpsoft.com</A>>
>> Author of PrettyFaces <<A HREF="http://ocpsoft.com/prettyfaces">http://ocpsoft.com/prettyfaces</A>> URL Rewriting
>> for JSF
>>
>>
>
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--<BR>
<B>Lincoln Baxter, III</B><BR>
Co-Founder of <A HREF="http://ocpsoft.com">OcpSoft</A><BR>
Author of <A HREF="http://ocpsoft.com/prettyfaces">PrettyFaces</A> URL Rewriting for JSF<BR>
<BR>
<BR>
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