`GeoExt.tree.LayerParamLoader`¶

Extends

class GeoExt.tree.LayerParamLoader¶: A loader that creates children from its node’s layer (OpenLayers.Layer.HTTPRequest) by items in one of the values in the layer’s params object.

Config Options¶

Configuration properties in addition to those listed for Ext.util.Observable.

delimiter: String Delimiter of the param‘s value’s items. Default is , (comma). If the param‘s value is an array, this property has no effect.

param: String Key for a param (key-value pair in the params object of the layer) that this loader uses to create childnodes from its items. The value can either be an Array or a String, delimited by the character (or string) provided as delimiter config option.

Public methods in addition to those listed for Ext.util.Observable.

LayerParamLoader.createNode()¶

Parameter:	attr – `Object` attributes for the new node

Override this function for custom TreeNode node implementation, or to modify the attributes at creation time.

Events in addition to those listed for Ext.util.Observable.

beforeload

Triggered before loading children. Return false to avoid loading children.

Listener arguments:

load

Triggered after children were loaded.

Listener arguments: