The LayerStore associtated with the map already has register listeners in the 
map to take care of adding layers to itself when you add them to the map or 
vice versa.
Remove the additional listener that you are adding and things should work much 
better.

Matt Priour


From: IT Intern 
Sent: Monday, November 29, 2010 12:28 PM
To: [email protected] 
Subject: [Users] Dynamic Node does not bind to layer


Hello GeoExt list,

I have a tree panel which I append a child node to after it has been created.  
The node appears, but when it is toggled on and off I get the error in firebug:


this.node.getOwnerTree() is null
 var checkedNodes = this.node.getOwnerTree().getChecked();

Also the layer does not appear on and off as the node is toggled.  I have tried 
several things, last thing I tried is listening to the event of where the map 
has added the layer and then adding the layer to the layer store and creating 
the node and appending it to the root node of the tree panel.  Please if anyone 
knows why this is failing please drop me a hint :)

Thanks,

elshae


    
    map.events.register("addlayer", this, function() {
        var l = map.layers[map.layers.length-1];
        layerStore.loadData([l], true);
        var className = '';
        if (l.isBaseLayer || !l.displayInLayerSwitcher) {
            className = 'x-hidden';
        }
      
        var node = new GeoExt.tree.LayerNode({
            layerStore: layerStore,
            layer: l,
            checkedGroup: 'foo',
            checked: false
        });
        // todo, depends on ascending whether to use insertBefore or appendChild
        //this.getRootNode().insertBefore(node, this.getRootNode().firstChild); 
        layerRoot.getOwnerTree().getNodeById('photos').appendChild(node);
        });

map.addLayer(vectorPano);



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