[Users] Need Layer Tree examples for grouping several layers

[Mehmet Sirin]

Hi,
someone got some Layer tree examples? I need a couple to understand
how it work, because the example at
http://dev.geoext.org/trunk/geoext/examples/tree.html is only hard to
understand.
Examples based on what is explained here
http://www.geoext.org/tutorials/layertree-tutorial.html would be nice.
Or can you tell me how to realize my project: I have a few dynamically
generated name for the parent-node and now I want to assign to each
parent-node three child-nodes (three layer which contain vector
features).
Every layer should have one radiobutton in addition to the existing
checkbox, also the parent-folder should have one radiobutton to
activate or deactivate all three underlying layers.

I think this is a basic and easy work..but I am not able to realize it.

Maybe you want to know what I do not understand:

- "y adding multiple named and filtered LayerContainers to a TreePanel
you are able to provide logical organization to your layer trees" ..
okay, that's what I need. But how to give over several LayerContainers
in practise ? I tried to feed "root" in TreePanel with a array of
layerContainer.. of course it does not work :D.
-I have to use

loader: {
       filter: function(record) {
           return record.get("layer").name.indexOf("Tasmania") !== -1
       },

for choosing three certain layers? how would that look like`?

- The "Three Nodes" example on Geoext website is somehow different to
the stuff above (?).
 -- all of a sudden JSON.write (never used or heard) and something
with "gx_baselayercontainer" etc. is in action. Looks like weird
stuff.. As I'm writing this or complaining  I understand why or when
to use gx_baselayercontainer :-D .. but though i don't want to use
this technique and still i don't know how to solve my above described
problem.


I hope you can give me some hints :)
thank you

regards
m.sirin