Re: reset tree2 root via commandLink, illogical state errors

[Juan C. Galeano H.]

Hi!

I had a similar problem and I had to set preserveToggle="false" so that 
tree get collapsed after each request.

I hope it helps you.

regards,

JuanCarlos

Bill Schneider wrote:

I am trying to implement a page with the tree2 tag in which clicking on
a node in the tree redraws the tree with a new root.

I have things almost working except for breakage with expansion state.
Somehow I am unable to wipe the current expansion state after building
the new tree model with the new root after selection.  This often
results in an "illogical state" / "Node is expanded but it is also
considered a leaf..." error.

I am using request scope for my managed bean and client-side state
saving.  My JSP looks something like this:

<t:tree2 value="#{bean.tree}" var="node" binding="theTree" ....>
<f:facet...>
    <h:commandLink action="#{bean.changeRoot}"> ... </h:commandLink>
</f:facet...>
</t:tree2>

and my controller looks something like this:

public class Bean {
    private HtmlTree _theTree; //+getters/setters
    private TreeNode _root;
    private TreeModel _model;

    public TreeModel getTree() {
      _model = new TreeModelBase(... data from root ...);
      return _model;
    }

    public void changeRoot() {
      TreeNode newRoot = _theTree.getNode();
      _root = newRoot;
      _model = new TreeModelBase(... newRoot ..);
      // somehow need to wipe expansion state
      _model.setTreeState(new TreeStateBase());
    }
}

It seems like providing a fresh TreeStateBase object should wipe the
current expansion state but this doesn't seem to help.  Any ideas for
what I might be missing here?

Thanks in advance,
-- Bill