net/systemeD/potlatch2/utils/BugLoader.as

   1 package net.systemeD.potlatch2.utils {
   2
   3     import net.systemeD.halcyon.Map;
   4     import net.systemeD.halcyon.VectorLayer;
   5     import net.systemeD.halcyon.connection.Node;
   6     import flash.net.*;
   7     import flash.events.*;
   8     import com.adobe.serialization.json.JSON;
   9
  10     public class BugLoader {
  11
  12         private var map:Map;
  13         private var bugBaseURL:String;
  14         private var bugApiKey:String;
  15         private var _layer:VectorLayer;
  16         private static const STYLESHEET:String="bugs.css";
  17
  18         public function BugLoader(map:Map, url:String, bugApiKey:String):void {
  19             this.map = map;
  20             this.bugBaseURL = url;
  21             this.bugApiKey = bugApiKey;
  22         }
  23
  24         public function load():void {
  25             var loader:URLLoader = new URLLoader();
  26             loader.load(new URLRequest(bugBaseURL+"getBugs.json?bbox="+map.edge_l+","+map.edge_b+","+map.edge_r+","+map.edge_t+"&key="+bugApiKey));
  27             loader.addEventListener(Event.COMPLETE, parseJSON);
  28         }
  29
  30         public function parseJSON(event:Event):void {
  31             trace("parseJSON");
  32             var result:String = String(event.target.data);
  33             var featureCollection:Object = JSON.decode(result);
  34             trace(featureCollection);
  35             trace(featureCollection.type);
  36             trace(featureCollection.features[0].type);
  37             trace(featureCollection.features.length);
  38             for each (var feature:Object in featureCollection.features) {
  39               // geoJSON spec is x,y,z i.e. lon, lat, ele
  40               var lon:Number = feature.geometry.coordinates[0];
  41               var lat:Number = feature.geometry.coordinates[1];
  42               trace(lat, lon);
  43               var node:Node = layer.createNode({"name":feature.properties.description,"bug_id":feature.id}, lat, lon);
  44               layer.registerPOI(node);
  45             }
  46             layer.paint.updateEntityUIs(layer.getObjectsByBbox(map.edge_l,map.edge_r,map.edge_t,map.edge_b), false, false);
  47             //var json:Array =
  48         }
  49
  50         private function get layer():VectorLayer {
  51             if (!_layer) {
  52                 var n:String='Bugs';
  53                 _layer=new VectorLayer(n,map,STYLESHEET);
  54                 map.addVectorLayer(_layer);
  55             }
  56             return _layer;
  57         }
  58     }
  59 }