[Users] Using GeoEXT2 store for Layer tree

[Christian Mayer | meggsimum]

Hi Shahid,

I guess your 'checkchange'-handler is the problem. The GeoExt-tree takes
care of toggling the visibility of the corresponding layer of your
tree-node. It seems that you are doing the same in your
'checkchange'-handler, so the handlers call each other, which ends up in
an endless recursion.

Try to remove your own handler and let GeoExt handle the
visibility-toggle for you.

Cheers
Chris

On 01.03.2017 18:23, Shahid Nawaz Khan wrote:
>
> *I want to create a layer tree like the one given in the below example*.
> https://iris.gov.gr/SoilServices/danger.html
>
> The example finely works when i implement the same on my own system it
> doesn't work and I don't know much about the complexities of GeoEXT.
>
> I am writing my code here below and the error that I get.
>
> Here is the code for the Store:
>
>         var store = Ext.create('Ext.data.TreeStore', {
>
>         model: 'GeoExt.data.LayerTreeModel',
>
>         root: {
>
>         text: "Root",
>
>         expanded: true,
>
>         children: [
>
>         {
>
>         text: "Θεματικοί Χάρτες",
>
>         leaf: false,
>
>         expanded: true,
>
>         children: [
>
>         {
>
>         text: sppsq.name <http://sppsq.name>,
>
>         layer: sppsq,
>
>         leaf: true,
>
>         checked: false,
>
>         children: [],
>
>         nodeType: "gx_overlaylayercontainer"
>
>         },
>
>         {
>
>         text: elecag.name <http://elecag.name>,
>
>         layer: elecag,
>
>         leaf: true,
>
>         checked: false,
>
>         children: [],
>
>         nodeType: "gx_overlaylayercontainer"
>
>         },
>
>         ]
>
>         },
>
>         {
>
>         plugins: [{
>
>         ptype: 'gx_baselayercontainer',
>
>         loader: {store: mapPanel.layers} // BASE "REFERENCE" LAYERS
>         FROM arcticMapPanel
>
>         }],
>
>         expanded: true,
>
>         text: 'Υπόβαθρα'
>
>         }
>
>         ]
>
>         }
>
>         });
>
> Below is the code for tree:
>
>         var tree = Ext.create('GeoExt.tree.Panel', {
>
>         border: true,
>
>         region: "west",
>
>         title: "Επίπεδα",
>
>         width: 290,
>
>         split: true,
>
>         collapsible: true,
>
>         collapseMode: "mini",
>
>         autoScroll: true,
>
>         store: store,
>
>         rootVisible: false,
>
>         lines: false,
>
>         listeners: {
>
>         checkchange: {
>
>         fn: function (record, checked, opts) {
>
>         record.data.layer.setVisibility(checked)
>
>             }
>
>             }
>
>             }
>
>             }
>
>             );
>
> Error Got:
>
> I get the following error in the console.
> too much recursion
> http://cdn.sencha.com/ext/gpl/5.1.0/build/ext-all-debug.js
> Line 1759
>
>
> *Help Required:*
> Any help will be appreciated as I am not an expert user of GeoEXT. 
> *
> *
>
>
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