Thanks both of you.
I still have one doubt, though: using a placeholder as a page component provides both a DOM id to replace and a component to provide contents for replacement.
However this game works just once: as soon as the placeholder is filled in with true contents from PPR, it's lost forever. While I can certainly create a new placeholder by js for a future PPR addition, there wouldn't be any associated component on the server side. In other words - an adding PPR response will fill the old placeholder without providing a new one. How can I force such a new component creation for the next cycle ?
I'm afraid I miss the overall picture involving PPR restore-view and PPR rendering to solve this puzzle.

-- Renzo

Andrew Robinson wrote:
Should have been partialTriggers.

This is just to illustrate the usage. Simon's reply is correct.

On Thu, Apr 10, 2008 at 11:42 AM, Andrew Robinson
<[EMAIL PROTECTED]> wrote:
  
Panel group layout is pretty simple, and will do what you need.

 Example:

 <tr:panelGroupLayout partialTargets="exampleButton">
  <tr:commandLink rendered="#{buttonWasClicked}" text="visible now!"/>
 </tr:panelGroupLayout>

 <tr:commandButton id="exampleButton" text="Show it" partialSubmit="true">
  <f:setPropertyActionListener target="#{buttonWasClicked}" value="#{true}" />
 </tr:commandButton>



 On Thu, Apr 10, 2008 at 10:23 AM, Simon Lessard
 <[EMAIL PROTECTED]> wrote:
 > Hi Renzo, yes a simple invisible div or even span with the right id is
 > enough. PPR need that only to know where to place the refreshed item with
 > the specified id.
 >
 > ~ Simon
 >
 >
 >
 > On Thu, Apr 10, 2008 at 12:17 PM, Renzo Tomaselli
 > <[EMAIL PROTECTED]> wrote:
 >
 > > Hi, I wonder if anybody can enlight me about this topic.
 > > Assume having to add something new to a page through PPR: this requires
 > updating some enclosing container, since PPR is all about updating (e.g.
 > replacing) DOM parts, not adding new stuff. For example, adding a new panel
 > to a container already owning some of them.
 > > Such a container might be lenghty to refresh - so an alternative solution
 > might be achieved from having a placeholder to mark the future part to be
 > added by means of addPartialTarget.
 > > The question is whether all is needed is a proper id to match the selected
 > component to redraw. If yes, a simple empty and hidden div is enough.
 > > Any comment is appreciated,
 > >
 > > -- Renzo
 > >
 > >
 >
 >

    


  

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