[jsr-314-open] Amendment to section 2.2.1 Restore View

[Dan Allen]

There is a second issue. There is no event between view encoding and state
writing. There really needs to be a hook at each stage.

Create empty view root
<event>*
Build component tree
<event>**
Render component tree
<event>**
Save state

* This is the key point for applications to interact with the view metadata
** Listeners can modify the component tree, perhaps to add components
dynamically
** Allows the application to modify the state of any component in the tree
just before the tree state is written out. Does that seem useful?

-Dan

On Mon, Nov 2, 2009 at 7:17 PM, Dan Allen <dan.j.allen at gmail.com> wrote:

> This has been a problem with Facelets from the start. Facelets has always
> built and serialized the component tree in one fell swoop. I've run into
> this problem a number of times when trying to add default behavior to a
> component tree.
>
> Of course, you have the PreRenderViewEvent, which gets called just before
> the rendering begins, so you have a populated tree at that point. However,
> any changes to the tree are not recorded by the state saving mechanism (I'd
> need to verify that).
>
> Perhaps what we need instead is for the state saving to recheck if the
> component tree state changed by a PreRenderViewEvent listener. (Of course, I
> think you could do this yourself in one of these listeners, but not the
> ideal solution).
>
> This brings up an important documentation question. At what point in the
> lifecycle do we recommend that the application add dynamic elements to the
> component tree? Some guidance would be helpful.
>
> -Dan
>
>
> On Mon, Nov 2, 2009 at 4:52 PM, Ryan Lubke <Ryan.Lubke at sun.com> wrote:
>
>> Please see Mojarra-1383 [1] for background on this issue.
>>
>> Based on this, it seems we would need to remove the last bullet item in
>> this section that states:
>>
>>   "Publish an PostAddToViewEvent with the created UIViewRoot as the event
>> source."
>>
>> and move the responsibility of publishing this event to
>> ViewDeclarationLanguage.buildView() - the
>> point when the view is actually populated.
>>
>> Thoughts?
>>
>> [1] https://javaserverfaces.dev.java.net/issues/show_bug.cgi?id=1383
>>
>
>
>
> --
> Dan Allen
> Senior Software Engineer, Red Hat | Author of Seam in Action
> Registered Linux User #231597
>
> http://mojavelinux.com
> http://mojavelinux.com/seaminaction
> http://www.google.com/profiles/dan.j.allen
>



-- 
Dan Allen
Senior Software Engineer, Red Hat | Author of Seam in Action
Registered Linux User #231597

http://mojavelinux.com
http://mojavelinux.com/seaminaction
http://www.google.com/profiles/dan.j.allen
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.jboss.org/pipermail/jsr-314-open-mirror/attachments/20091102/5bf8835e/attachment.html