[Users] Problem appending layer to tree node

[Robert Buckley]

Hi,

I have defined a treepanel which has child elements which work as data folders 
for wms layers....
I have added a grid which lists the other layers on my server (from the 
getcapabilities doc) and adds them to the map . 


I have successfully achieved this, but am having the problem that the newly 
added layers from the window are being assigned to each and every root.child. 


To solve this, I would like to add the layers from the gecapabilities doc grid 
to a new root.child called "MyLayers".

My logic is this.....II need to then write code to firstly check if the 
root.child with an id" MyLayers" exists, and if not... create it, and then add 
any layers to this child.

Is this possible? and how?


My Code...


// Layer root container

    var layerRoot = new Ext.tree.TreeNode({
          text: "Karteninhalt",
          expanded:false

        });

// These are the content layer stores

// Baselayers
    var layerListBase = new GeoExt.tree.BaseLayerContainer({
          text: "<span class='TreeHeader'>Hintergrundkarten</span>",
          map: map,
          expanded: false

    });

// Layer Stores - Nachrichtlich
    var nachrichtlich_store = new GeoExt.data.LayerStore({
        text: "Grenzen",
        map:map,
        initDir: 0,
        layers:[Grenzen]
    });

    // Layer Stores - WIND
    var wea_store = new GeoExt.data.LayerStore({
        text: "Windenergie",
        map:map,
        initDir: 0,
        layers:[layer_windpotential,layer_wea_f,layer_wea]
    });

// the tree is made here

layerRoot.appendChild(layerListBase);

    layerRoot.appendChild(new GeoExt.tree.OverlayLayerContainer({
        text: "<span class='TreeHeader'>Nachrichtlich</span>",
        layerStore: nachrichtlich_store,
        expanded: false
        })
    );

    layerRoot.appendChild(new GeoExt.tree.OverlayLayerContainer({
        text: "<span class='TreeHeader'>Windenergie</span>",
        layerStore: wea_store,
        expanded: false
        })
    );


...the extract from the button in the grid which adds the layers from the 
getcapabilities doc...

bbar: [new Ext.Button({
                 text: "Layer hinzuf&uuml;gen",
                 tooltip : 'Layer hinzuf&uuml;gen',
                 handler: function() {

                // select layer from grid
                    capabilitiesgrid.getSelectionModel().each(function(record) {
                     var clone = record.clone();
                     clone.get("layer").mergeNewParams({
                        format: "image/png",
                         transparent: true
                     });            

            // add layer to map
            mapPanel.layers.add(clone);
                       
            if(node) {
            var node = tree.getNodeById('MyLayers'); 
            tree.node.add(node,clone);

            }
        
                //  zoom to nely added layer
        var bounds = new OpenLayers.Bounds.fromArray(clone.get("llbbox"))
        bounds.transform(epsg4326, map.getProjectionObject());
        map.zoomToExtent(bounds)
        
                
            });
        }
        })
        ,


Thanks for any help,


Robert

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