RE: Finding a component with a specific id

2005-10-25 Thread Kirchgessner, Lisa 
Have you tried putting the colSelector after the datatable?  It sounds
like the view does not yet contain the table. I thought myFaces had
similar issues with the DataScroller in ealier versions (maybe still
do).  Maybe take a look on how they handled?

Of course, just a guess.

Good luck

-Original Message-
From: Simon Kitching [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, October 25, 2005 12:07 AM
To: MyFaces Discussion
Subject: Finding a component with a specific id


Hi,

 From a custom renderer I need to be able to find a component with a 
specific id.

Page:
   o:colSelector tableId=table1 .../

   t:dataTable id=table1 ...
  ..
   /t:dataTable

 From the renderer for the o:colSelector I've tried:
   UIComponent table =
facesContext.getViewRoot().findComponent(tableId);
   UIComponent table = component.findComponent(tableId);
   UIComponent table = component.findComponent(: + tableId); but had
no luck.

The table is enclosed in a subview named body, so the id actually gets

output as body:table1. I've tried all the above with that string too, 
and no luck.

Any ideas how I should locate that table component by id??
[And BTW, is it possible for a component in a naming container to have 
an id that is *not* prefixed by its NamingContainer parent's id?]


On a related note, looking at the source for UIComponent.findComponent, 
I see it calls _ComponentUtils.findComponent which is as follows.

 static UIComponent findComponent(UIComponent findBase, String id)
 {
 if (idsAreEqual(id,findBase))
 {
 return findBase;
 }

 for (Iterator it = findBase.getFacetsAndChildren();
   it.hasNext(); )
 {
 UIComponent childOrFacet = (UIComponent)it.next();
 if (!(childOrFacet instanceof NamingContainer))
 {
 UIComponent find = findComponent(childOrFacet, id);
 if (find != null) return find;
 }
 else if (idsAreEqual(id,childOrFacet))
 {
 return childOrFacet;
 }
 }

 return null;
 }

What's the point of that instanceof NamingContainer? Why doesn't the 
search recurse into NamingContainer children of findBase?

Thanks,

Simon

RE: Finding a component with a specific id

2005-10-25 Thread CONNER, BRENDAN \(SBCSI\) 
You might already have looked this up; the JavaDoc for UIComponent has
an extensive description of the lookup algorithm used:
http://java.sun.com/j2ee/javaserverfaces/1.1_01/docs/api/index.html

- Brendan

-Original Message-
From: Simon Kitching [mailto:[EMAIL PROTECTED] 
Sent: Monday, October 24, 2005 11:07 PM
To: MyFaces Discussion
Subject: Finding a component with a specific id


Hi,

 From a custom renderer I need to be able to find a component with a 
specific id.

Page:
   o:colSelector tableId=table1 .../

   t:dataTable id=table1 ...
  ..
   /t:dataTable

 From the renderer for the o:colSelector I've tried:
   UIComponent table =
facesContext.getViewRoot().findComponent(tableId);
   UIComponent table = component.findComponent(tableId);
   UIComponent table = component.findComponent(: + tableId);
but had no luck.

The table is enclosed in a subview named body, so the id actually gets

output as body:table1. I've tried all the above with that string too, 
and no luck.

Any ideas how I should locate that table component by id??
[And BTW, is it possible for a component in a naming container to have 
an id that is *not* prefixed by its NamingContainer parent's id?]


On a related note, looking at the source for UIComponent.findComponent, 
I see it calls _ComponentUtils.findComponent which is as follows.

 static UIComponent findComponent(UIComponent findBase, String id)
 {
 if (idsAreEqual(id,findBase))
 {
 return findBase;
 }

 for (Iterator it = findBase.getFacetsAndChildren();
   it.hasNext(); )
 {
 UIComponent childOrFacet = (UIComponent)it.next();
 if (!(childOrFacet instanceof NamingContainer))
 {
 UIComponent find = findComponent(childOrFacet, id);
 if (find != null) return find;
 }
 else if (idsAreEqual(id,childOrFacet))
 {
 return childOrFacet;
 }
 }

 return null;
 }

What's the point of that instanceof NamingContainer? Why doesn't the 
search recurse into NamingContainer children of findBase?

Thanks,

Simon

Re: Finding a component with a specific id

2005-10-25 Thread Simon Kitching 

Kirchgessner, Lisa wrote:

Have you tried putting the colSelector after the datatable?  It sounds
like the view does not yet contain the table. I thought myFaces had
similar issues with the DataScroller in ealier versions (maybe still
do).  Maybe take a look on how they handled?

Of course, just a guess.


And a very good guess it was too. The old JSF/JSP problem of components 
being created and rendered in the same pass. Thanks!


Oh how I wish we were using Facelets!

Cheers,

Simon