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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>All,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I’d like to implement a layer tree that makes use of
the check box to turn on the layer and the radio button to allow the layer to
be queried.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I’ve been looking over the <a
href="http://dev.geoext.org/trunk/geoext/examples/tree.js">http://dev.geoext.org/trunk/geoext/examples/tree.js</a>
example, however I am just not following how it works at all.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I understand that the JSON is used to configure the layer
tree, however I do not understand how most of the nodes get added.<o:p></o:p></span></font></p>
<pre><font size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'>For instance, in the treeConfig variable, the first entry is: </span></font>nodeType: "gx_baselayercontainer" and from the documentation I see that <o:p></o:p></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>gx_baselayercontainer will place all the base layer layers in that node. <o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>The second entry of: <o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>nodeType: "gx_overlaylayercontainer",<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>expanded: true,<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>loader: {<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> baseAttrs: {radioGroup: "foo"}<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'> }<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>is where I cannot follow. I don’t see how that relates to the layers that end up in the “Overlays” node.<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>Can someone explain how this works? I might be missing something fundamental, but I am lost at the moment.<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>Thanks for the help.<o:p></o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'><o:p> </o:p></span></font></pre><pre><font
size=2 face="Courier New"><span style='font-size:10.0pt'>Dan<o:p></o:p></span></font></pre></div>
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