Heron.widgets.GeocoderCombo

Extends

• Ext.form.ComboBox

xtype

hr_geocodercombo

class Heron.widgets.GeocoderCombo(config)

Creates a combo box that handles results from a geocoding service. By default it uses OSM Nominatim, but it can be configured with a custom store to use other services like WFS. If the user enters a valid address in the search box, the combo’s store will be populated with records that match the address. By default, records have the following fields:

• name - String The formatted address.

• lonlat - Array Location matching address, for use with

  OpenLayers.LonLat.fromArray.

• bounds - Array Recommended viewing bounds, for use with

  OpenLayers.Bounds.fromArray.

Config Options

Configuration properties in addition to those listed for Ext.form.ComboBox.

displayField

String The field to display in the combo boy. Default is “name” for instant use with the default store for this component.

emptyText

String Text to display for an empty field (i18n).

layer

OpenLayers.Layer.Vector If provided, a marker will be drawn on this layer with the location returned by the geocoder. DISABLED: The location will be cleared when the map panned.

layerOpts

Options for layer activation when search was successful.

loadingText

String Text to display for an empty field (i18n).

locationField

String The field to get the location from. This field is supposed to contain an array of [x, y] for a location. Default is “lonlat” for instant use with the default store for this component.

map

GeoExt.MapPanel|OpenLayers.Map The map that will be controlled by this GeoCoderComboBox. Only used if this component is not added as item or toolbar item to a GeoExt.MapPanel.

minChars

Number Minimum number of entered characters to trigger a search. Default is 3.

queryDelay

Number Delay before the search occurs. Default is 200ms.

queryParam

String The query parameter for the user entered search text. Default is “q” for instant use with OSM Nominatim.

srs

String|OpenLayers.Projection The srs used by the geocoder service. Default is “EPSG:4326”.

store

Ext.data.Store The store used for this combo box. Default is a store with a ScriptTagProxy and the url configured as url property.

tooltip

See http://www.dev.sencha.com/deploy/dev/docs/source/TextField.html#cfg-Ext.form.TextField-emptyText, default value is “Search”.

url

String URL template for querying the geocoding service. If a store is configured, this will be ignored. Note that the queryParam will be used to append the user’s combo box input to the url. Default is “http://nominatim.openstreetmap.org/search?format=json”, for instant use with the OSM Nominatim geolocator. However, if you intend to use that, note the Nominatim Usage Policy.

valueField

String Field from selected record to use when the combo’s getValue() method is called. Default is “bounds”. This field is supposed to contain an array of [left, bottom, right, top] coordinates for a bounding box or [x, y] for a location.

zoom

String The minimum zoom level to use when zooming to a location. If zoom < 0 then zoom to extent. Default is 10.

Public Properties

Public properties in addition to those listed for Ext.form.ComboBox.

GeocoderCombo.hideTrigger

Hide trigger of the combo.