[Users] Layer Tree groups

[antoniofacno]

My friend, we are really really near and I'm starting to understand the 
way this works.

Now I've got a little problem. The root not appear expanded and If I 
click over it the Firefox tell me this:

     Error: this.node.layer.getVisibility is not a function
     Archivo de origen: 
http://ao.getcloud.info/GeoExt/lib/GeoExt/widgets/tree/LayerNode.js
     Línea: 30

My Layer definitions are:

         var lindes = new OpenLayers.Layer.WMS(
             "Lindes",
             "http://getcloud.info:8080/geoserver/wms",
            {
                 layers: "lindes",
                 format: "image/png",
                 transparent:true
             },
             {
                 isBaseLayer: true,
                 singleTile: true,
                 visibility: true
             }
         );

         var catastro = new OpenLayers.Layer.WMS(
             "Base",
             "http://getcloud.info:8080/geoserver/wms",
            {
                 layers: "ao:Catastro",
                 format: "image/png",
                 transparent:true
             },
             {
                 isBaseLayer: true,
                 singleTile: true,
                 visibility: true
             }
         );

         var labores_2010 = new OpenLayers.Layer.WMS(
                 "Labores 2010",
                    "http://getcloud.info:8080/geoserver/wms",
                 {
                     layers: [
                         "tratamiento_2010",
                         "rulo_2010",
                         "varetas_2010",
                         "desbrozar_2010",
                         "soplar_2010"
                     ],
                     format: "image/png",
                     transparent:true
                 }, {
                     isBaseLayer: false,
                     buffer: 0,
                     singleTile: true,
                     visibility: true
                 }
            );

         layer = [catastro, lindes, labores_2010];


A lot of thanks,

On 08/11/10 20:39, Matt Priour wrote:
> Getting closer...
> var treeConfig = [ ... ]  (THIS is the treeConfig object I was 
> referencing; I was talking about your local treeConfig variable)
>
> here is what you want:
>
>         var treeConfig = [
>         {
>             //layer: "catastro", - Don't put a layer here. It will 
> just be ignored. The visible layer is determined by the order they are 
> added to the map
>             nodeType: "gx_baselayercontainer",
>             expanded:true,
>             text: "My Base Layers Title" //OPTIONAL - if you don't 
> give it a text attribute then it will use a default value for the text 
> of the base layers parent node
>         },
>         {
>             nodeType: "gx_layer",
>             text: "Labores 2010",
>             layer: "labores_2010",
>             isLeaf:false
>             loader: {
>               param: "LAYERS"
>             }
>         } ];
>
> tree = new Ext.tree.TreePanel({
>             border: true,
>             region: "west",
>             title: "Capas",
>             width: 200,
>             split: true,
>             collapsible: true,
>             root: {
>                 nodeType: "async",
>                 children: treeConfig
>             }
>         });
>
> Matt Priour
> Kestrel Computer Consulting
>
>
> --------------------------------------------------
> From: "antoniofacno" <antoniofcano at gmail.com>
> Sent: Monday, November 08, 2010 12:56 PM
> To: <users at geoext.org>
> Subject: Re: [Users] Layer Tree groups
>
>> On 08/11/10 19:08, Matt Priour wrote:
>>> While the JSON editing function in
>>> http://api.geoext.org/1.0/examples/tree.js allows people to play with
>>> the example directly, it has also generated quite a bit of confusion.
>>> First, there is no need to write your child node configurations to
>>> JSON and then parse it back out of JSON.
>>> Second, do you actually want to show the layers from the WMS that make
>>> up your labores_2010  WMS Layer and give users the ability to turn
>>> them on/off independtly?
>>> If so, then you want to use a LayerParamLoader, if not then you want
>>> to use the regular OverlayLayerContainerLoader or a gx_layer node with
>>> no loader.
>>>
>>> Here is the code you would use for allowing individual selection of
>>> the different labores_2010  layers
>>> {
>>>   nodeType: "gx_layer",
>>>   text: "Labores 2010",
>>>   layer: "labores_2010",
>>>   isLeaf:false
>>>   loader: {
>>>      param: "LAYERS"
>>>   }
>>> // creates subnodes for the layers in the LAYERS param. If we assign
>>> // a loader to a LayerNode and do not provide a loader class, a
>>> // LayerParamLoader will be assumed.
>>> }
>>>
>>> Here is the code you would use for a single node to turn on/off the
>>> labores_2010 layer
>>> {
>>>   nodeType: "gx_layer",
>>>   text: "Labores 2010",
>>>   layer: "labores_2010",
>>>   isLeaf: true,
>>>   checked: true
>>> }
>>>
>>> Here is the code to use an OverlayLayerContainerLoader. This will
>>> create subnodes for each non-baseLayer that has
>>> 'displayInLayerSwitcher' == true (the default for the layer, unless
>>> you specifically set it false in the layer options). It will use each
>>> layer's name attribute as the text for the tree node.
>>> {
>>>   nodeType:'gx_overlaylayercontainer',
>>>   expanded:true,
>>>   loader:{
>>>      baseAttrs:{checked:true} //this gives the overlayer layers
>>> checkboxes
>>>   }
>>> }
>>>
>>> Get rid of the OpenLayers.Format.JSON write & parse stuff and just use
>>> treeConfig object directly.
>>>
>> I think that I understand the JSON stuff, but the treeConfig object not
>> at all. Is that what I have to wrote?
>>
>>         var treeConfig = [
>>         {
>>             layer: "catastro",
>>             nodeType: "gx_baselayercontainer",
>>         },
>>         {
>>             nodeType: "gx_layer",
>>             text: "Labores 2010",
>>             layer: "labores_2010",
>>             isLeaf:false
>>             loader: {
>>               param: "LAYERS"
>>             }
>>         } ];
>>
>> I looking info for treeConfig Object but I don't find anything :(
>>
>> A lot of thanks,
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>