🚀 go-pugleaf

i am doing something similar (pulling data in on request that is), i use
the treeWillExpand event of the JTree and it works well.  i do the
following:

	void treLocation_treeWillExpand(TreeExpansionEvent e) throws
ExpandVetoException
    {
        TreePath trpPath = e.getPath();

        if(trpPath != null)
        {
            // get the ending node
            FileNode node = (FileNode)(trpPath.getLastPathComponent());

            // first, make sure its not a leaf, these can't be expanded
            if(!node.isLeaf())
            {
                // get the children for this node that is being opened
                retrieveNodeChildren(trpPath);

                // fire a structure changed event for this node so that
any
                // new nodes will be displayed in the tree
               
((DefaultTreeModel)treLocation.getModel()).nodeStructureChanged(node);
            }
            else
            {
                throw new ExpandVetoException(e, "Can not expand a
leaf");
            }
        }
    }


the actuall pulling of data in and node addition is done in
retrieveNodeChildren


ian