[Users] gx_layercontainer filter:

[Andreas Hocevar]

Hi,

the problem is here:

var treeConfig = new OpenLayers.Format.JSON().write({...});
...
children: Ext.decode(treeConfig)

This way you prevent all executable code (which the function definitely 
is) from ending up in the config.

Instead, do

var treeConfig = {...}
...
children: treeConfig


The reason for this json de/encoding in the example is to allow the user 
to play around with configs.

Regards,
Andreas.


Brian Marble wrote:
> Andreas,
> 
> I have been using 0.6. 
> 
> I just checked out the latest SVN at http://svn.geoext.org/core/trunk/geoext
> 
> 
> I tried a couple of different filters but no change.
> 
> Any other ideas?
> 
> Thanks,
> Brian
> 
> 
>> -----Original Message-----
>> From: Andreas Hocevar [mailto:ahocevar at opengeo.org]
>> Sent: Thursday, January 28, 2010 10:22 AM
>> To: Brian Marble
>> Cc: users at geoext.org
>> Subject: Re: [Users] gx_layercontainer filter:
>>
>> Hey-
>>
>> your code should work with a current trunk version of GeoExt, but not
>> with GeoExt 0.6. Which version are you using?
>>
>> Regards,
>> Andreas.
>>
>> Brian Marble wrote:
>>> Hey,
>>>
>>> I am trying to filter a gx_layercontainer (see below). No matter what
>> I do
>>> all of my map.layers show in this branch of the tree. I want to have
>> more
>>> control over the contents of all branches of the tree. It looks like
>> the
>>> filter function just needs to be overridden on my part but I am
>> unable to
>>> make it work as below.
>>>
>>> My test code below is taken from
>>> http://dev.geoext.org/trunk/geoext/examples/tree.html
>>>
>>> Can anyone point out my oversights?
>>>
>>> Thanks,
>>> Brian
>>>
>>> ar options = {
>>>         projection: new OpenLayers.Projection("EPSG:900913"),
>>>         displayProjection: new OpenLayers.Projection("EPSG:4326"),
>>>         theme: null,
>>>         units: "m",
>>>         maxResolution: 156543.0339,
>>>         maxExtent: new OpenLayers.Bounds(-20037508.34, -20037508.34,
>>> 20037508.34, 20037508.34)
>>> //        allOverlays: true
>>>     };
>>>
>>> map = new OpenLayers.Map('mapContainer', options);
>>>
>>> var treeConfig = new OpenLayers.Format.JSON().write([{
>>>         nodeType: "gx_baselayercontainer",
>>>         text: "Base Layers"
>>>     }, {
>>>         nodeType: "gx_overlaylayercontainer",
>>>         text: "Over Layers",
>>>         expanded: false,
>>>         loader: {
>>> 	}
>>>     }, {
>>>         nodeType: "gx_layercontainer",
>>>         text: "Special Layers",
>>>         expanded: false,
>>>         loader: {
>>> 		filter: function(record) {
>>> 		      var layer = record.get("layer");
>>> //	     	 	return (!layer.isBaseLayer && layer.name == "2000
>>> Census - Population (TC)");
>>> 	     		return !layer.isBaseLayer;
>>> 	     }
>>>
>>> 		}
>>> 	}
>>>     ], true);
>>>
>>> var tree = new Ext.tree.TreePanel({
>>>         border: true,
>>>         region: "west",
>>>         title: "Layers",
>>>         width: 200,
>>>         split: true,
>>>         collapsible: true,
>>>         collapseMode: "mini",
>>>         autoScroll: true,
>>>         loader: new Ext.tree.TreeLoader({
>>>             applyLoader: false
>>>         }),
>>>
>>>         root: {
>>>             nodeType: "async",
>>>             children: Ext.decode(treeConfig)
>>>         },
>>>         listeners: {
>>>             "insert": registerRadio,
>>>             "append": registerRadio
>>>         },
>>>         rootVisible: false,
>>>         lines: false,
>>>         bbar: [{
>>>             text: "Show/Edit Tree Config",
>>>             handler: function() {
>>>                 treeConfigWin.show();
>>>                 Ext.getCmp("treeconfig").setValue(treeConfig);
>>>             }
>>>         }]
>>>     });
>>>
>>> ______________________________________________
>>> Brian Marble
>>> LandEZ Corp.
>>> W - 435 787 9003
>>> C - 435 881 3117
>>> F - 435 787 9004
>>> BrianMarble at LandEZ.com
>>>
>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at geoext.org
>>> http://www.geoext.org/cgi-bin/mailman/listinfo/users
>>>
>>
>> --
>> Andreas Hocevar
>> OpenGeo - http://opengeo.org/
>> Expert service straight from the developers.
> 


-- 
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.