All,
I am having a problem in achieving the behaviour I desire for rendering
responses. I would like to, at PhaseId.RENDER_RESPONSE, iterate the component
tree, and based on clientId setRendered(true | false). The problem is that I
never get the component tree. It seems that the tree is created AFTER the
PhaseId.RENDER_RESPONSE.
I have the folowing code:
public void beforePhase(PhaseEvent pe)
{
UIViewRoot root=pe.getFacesContext().getViewRoot();
log.debug( "root name = " + root.getViewId());
log.debug( "child count = " + root.getChildCount());
log.debug( "child count2= " +root.getChildren().size());
log.debug( "facet count = " +root.getFacets().size());
iterateComponentTree(root.getFacetsAndChildren(), pe.getFacesContext(),
0);
}
where iterateComponentTree() is a recursive method unpacking the tree and
looking at the permissions for a component vs. logged in user and setting the
components setRendered(true | false). The problem is that there is no
component tree. The call root.getChildCount() returns 0. I do not want to
write rendered="#{someBean.wasteOfCode}" on every component.
I have tried the same code in afterPhase(PhaseEvent) and am able to retreive
the tree but cannot effect its rendering behaviour.
Perhaps someone knows of a hook that I can use?????
If not then:
What I would like to see is a configurable option to inject a RenderManager
type bean that subscribes to some interface with one method taking the clientId
as the param. I could then take the clientId passed to the RenderManager and
map my security concerns to it. UIComponentBase could use a simple class like
this in its isRendered method.
It seems that my only option at this point ( that I am aware of ) is to use AOP.
Hope to hear from someone,
Rhys
