[Users] how to find a layer in layertree

[Robert Buckley]

Hi,

I am trying to write a function which checks to see if a layer is present in 
the 
tree.

if the layer already exists in the tree (or map) is shouldn´t be loaded...


can anyone help?


var clonename = clone.get("layer").name
            
            if (mapPanel.layers(clonename)) {
                Ext.MessageBox.alert(null, "test");
            }
            else 
            {
                mapPanel.layers.add(clone);
                Ext.MessageBox.alert(null, clonename);
            }

Cheers
Rob



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