www/plugins/gis/javascript/gis_geocoder.js

   1 /*
   2  * L.Geocoder is used to make geocoding or reverse geocoding requests.
   3  */
   4
   5 L.Geocoder = L.Class.extend({
   6
   7         includes: L.Mixin.Events,
   8
   9         options: {
  10                 forwardUrl: 'http://open.mapquestapi.com/nominatim/v1/search',
  11                 reverseUrl: 'http://open.mapquestapi.com/nominatim/v1/reverse',
  12                 limit: 1,
  13                 addressdetails: 1
  14         },
  15
  16         initialize: function (callback, options) {
  17                 L.Util.setOptions(this, options);
  18                 this._user_callback = callback;
  19         },
  20
  21         geocode: function (data) {
  22                 if (L.LatLng && (data instanceof L.LatLng)) {
  23                         this._reverse_geocode(data);
  24                 } else if (typeof(data) == 'string') {
  25                         this._geocode(data);
  26                 }
  27         },
  28
  29         _geocode: function (text) {
  30                 this._request(
  31                         this.options.forwardUrl,
  32                         {
  33                                 format: 'json',
  34                                 q: text,
  35                                 limit: this.options.limit,
  36                                 addressdetails: this.options.addressdetails
  37                         }
  38                 );
  39         },
  40
  41         _reverse_geocode: function (latlng) {
  42                 this._request(
  43                         this.options.reverseUrl,
  44                         {
  45                                 format: 'json',
  46                                 lat: latlng.lat,
  47                                 lon: latlng.lng
  48                         }
  49                 );
  50         },
  51
  52         _request: function (url, data) {
  53                 $.ajax({
  54                         cache: true,
  55                         context: this,
  56                         data: data,
  57                         dataType: 'jsonp',
  58                         jsonp: 'json_callback',
  59                         success: this._callback,
  60                         url: url
  61                 });
  62         },
  63
  64         _callback: function (response) {
  65                 var return_location = {};
  66                 if (response instanceof Array && !response.length) {
  67                         return false;
  68                 } else {
  69                         return_location.street = '';
  70                         return_location.postcode = '';
  71                         return_location.locality = '';
  72                         return_location.region = '';
  73                         return_location.country = '';
  74
  75                         if (response.length > 0) {
  76                                 place = response[0];
  77                         } else {
  78                                 place = response;
  79                         }
  80
  81                         var street_components = [];
  82
  83                         if (place.address.country) {
  84                                 return_location.country = place.address.country;
  85                         }
  86                         if (place.address.state) {
  87                                 return_location.region = place.address.state;
  88                         }
  89                         if (place.address.city) {
  90                                 return_location.locality = place.address.city;
  91                         }else if(place.address.county){
  92                                 street_components.push(place.address.pedestrian);
  93                         }
  94                         if (place.address.postcode) {
  95                                 return_location.postcode = place.address.postcode;
  96                         }
  97                         if (place.address.road) {
  98                                 street_components.push(place.address.road);
  99                         }else if(place.address.pedestrian){
 100                                 street_components.push(place.address.pedestrian);
 101                         }
 102                         if (place.address.house_number) {
 103                                 street_components.unshift(place.address.house_number);
 104                         }
 105
 106                         if (return_location.street === '' && street_components.length > 0) {
 107                                 return_location.street = street_components.join(' ');
 108                         }
 109
 110                         return_location.point = new L.LatLng(place.lat, place.lon);
 111
 112                         this._user_callback(return_location);
 113                 }
 114         }
 115 });