[Users] GeoExt Tree node Layers not visible when Openlayers is upgraded to latest version 2.10

[Andreas Hocevar]

Hi,

OpenLayers 2.10 and GeoExt 0.7 is an untested combination. You could upgrade to GeoExt 1.0, but then please read the release notes or look at the tree.html example to learn how to replace the RadioButtonMixin (which no longer exists) with a plugin.

Regards,
Andreas.

On Oct 11, 2010, at 11:19 , Anthony Tuffour wrote:

> Hi all,
> 
> I have upgraded to the latest version of Openlayers 2.10 and for some reason my GeoExt Tree Nodes layers are not visible when turned on. However, when I click on the map for WMSGetFeatureInfo even if the layers are not visible, I get the correct feature attributes results back in a popup. No errors as well. I have not changed anything in my application. I am using GeoExt version 0.7. However, with the previous version of Openlayers 2.9
> 
> GeoExt Tree nodes code below;
> 
> /* --------------------------------------------------------------
> 
> *  Treeview
> 
> * -------------------------------------------------------------- */
> 
> function hackneylayertree() {
> 
> var LayerNodeUI = Ext.extend(
> 
>         GeoExt.tree.LayerNodeUI, new GeoExt.tree.RadioButtonMixin()
> 
>             );
> 
> // configuration for editing it in the UI
> 
> var treeConfig = [
> 
>        {
> 
>        nodeType: "gx_baselayercontainer",
> 
>        text: "Baselayer",
> 
>        leaf: false,
> 
>        expanded: boltreeExpand
> 
>    },
> 
> /* --------------------------------------------------------------
> 
> *  Overlays
> 
> * -------------------------------------------------------------- */
> 
> {
> 
> text: "Overlays",
> 
> expanded: true,
> 
> children: [{
> 
>     nodeType: 'gx_layer',
> 
>     layer: "Hackney Parks",
> 
>     icon: wmsURL + 'REQUEST=GetLegendGraphic&VERSION=1.0.0&FORMAT=image/png&WIDTH=' + iconWidth + '&HEIGHT=' + iconHeight + '&LAYER=Hackney Parks'
> 
>         },
> 
>          {
> 
>              nodeType: 'gx_layer',
> 
>              layer: "Water Regions",
> 
>              icon: wmsURL + 'REQUEST=GetLegendGraphic&VERSION=1.0.0&FORMAT=image/png&WIDTH=' + iconWidth + '&HEIGHT=' + iconHeight + '&LAYER=Water Regions',
> 
>              qtip: qtipTooltip
> 
>          }]
> 
> },
> 
> /* --------------------------------------------------------------
> 
> *  Community and Living
> 
> * -------------------------------------------------------------- */
> 
> {
> 
> text: "Community and Living",
> 
> expanded: boltreeExpand,
> 
> children: [{
> 
>     nodeType: 'gx_layer',
> 
>     layer: "Places of Worship",
> 
>     icon: wmsURL + 'REQUEST=GetLegendGraphic&VERSION=1.0.0&FORMAT=image/png&WIDTH=' + iconWidth + '&HEIGHT=' + iconHeight + '&LAYER=Places of Worship'
> 
>          },
> 
>       {
> 
>           nodeType: 'gx_layer',
> 
>           layer: "Voluntary Organisations",
> 
>           icon: wmsURL + 'REQUEST=GetLegendGraphic&VERSION=1.0.0&FORMAT=image/png&WIDTH=' + iconWidth + '&HEIGHT=' + iconHeight + '&LAYER=Voluntary Organisations',
> 
>           qtip: qtipTooltip
> 
> }]
> 
> },
> 
> /* --------------------------------------------------------------
> 
> *  Transport and Streets
> 
> * -------------------------------------------------------------- */
> 
> {
> 
> text: "Transport and Streets",
> 
> expanded: boltreeExpand,
> 
> children: [
> 
>            {
> 
>                nodeType: 'gx_layer',
> 
>                layer: "Train Stations",
> 
>                icon: wmsURL + 'REQUEST=GetLegendGraphic&VERSION=1.0.0&FORMAT=image/png&WIDTH=' + iconWidth + '&HEIGHT=' + iconHeight + '&LAYER=TSI_LBH_RAIL_STATIONS',
> 
>                qtip: qtipTooltip
> 
>            },
> 
>          {
> 
>              nodeType: 'gx_layer',
> 
>              layer: "Cycle Stands",
> 
>              icon: wmsURL + 'REQUEST=GetLegendGraphic&VERSION=1.0.0&FORMAT=image/png&WIDTH=' + iconWidth + '&HEIGHT=' + iconHeight + '&LAYER=Cycle Stands',
> 
>              qtip: qtipTooltip
> 
>          },
> 
>           {
> 
>               nodeType: 'gx_layer',
> 
>               layer: "Barclays Hire Bike Stands",
> 
>               icon: wmsURL + 'REQUEST=GetLegendGraphic&VERSION=1.0.0&FORMAT=image/png&WIDTH=' + iconWidth + '&HEIGHT=' + iconHeight + '&LAYER=Barclays Hire Bike Stands',
> 
>               qtip: qtipTooltip
> 
>           },
> 
>             {
> 
>                 nodeType: 'gx_layer',
> 
>                 layer: "Controlled Parking Zones",
> 
>                 icon: wmsURL + 'REQUEST=GetLegendGraphic&VERSION=1.0.0&FORMAT=image/png&WIDTH=' + iconWidth + '&HEIGHT=' + iconHeight + '&LAYER=Controlled Parking Zones',
> 
>                 qtip: qtipTooltip
> 
> }]
> 
> }];
> 
> /*Layer Tree*/
> 
> //===================================================================
> 
> // create the tree with the configuration from above
> 
> var tree = new Ext.tree.TreePanel({
> 
>     border: true,
> 
>     region: "west",
> 
>     animate: true,
> 
>     applyTo: 'tablayers',
> 
>     height: 500,
> 
>     width: 350,
> 
>     enableDD: true,
> 
>     split: true,
> 
>     autoScroll: true,
> 
>     containerScroll: true,
> 
>     xtype: "gx_legendpanel",
> 
>     showWmsLegend: true,
> 
>     loader: new Ext.tree.TreeLoader({
> 
>         //clearOnLoad: true,
> 
>         // applyLoader has to be set to false to not interfer with loaders
> 
>         // of nodes further down the tree hierarchy
> 
>     applyLoader: false,
> 
>         uiProviders: {
> 
>                 "layernodeui": LayerNodeUI
> 
>             }
> 
>     }),
> 
>     root: {
> 
>         text: "Hackney Map Layers",
> 
>         nodeType: "async",
> 
>         children: treeConfig
> 
>     },
> 
>     rootVisible: true,
> 
>     lines: true
> 
> });
> 
> tree.getRootNode().expand();
> 
> }
> 
> 
> Any help or suggestions would be appreciated.
> 
> Thank you.
> 
> 
> 
> Anthony
> 
> 
> 
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-- 
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.