Controlling events in EDIT Widget

SaugatJoshi — Mon, 25 Jun 2012 17:18:26 GMT

I am trying to save the length of drawn graphic in the feature attribute. I have got the length of line feature. However, When I try to add it in editsStartingHandler I never have the calculated length available. I know this is because of the Async nature of flex, but I wanted to know where could I add the appropriate event listener function.

In populateEditor(), we have

oplList.layer.removeEventListener(FeatureLayerEvent.SELECTION_COMPLETE, featureLayer_selectionComplete);
oplList.layer..addEventListener(FeatureLayerEvent.EDITS_STARTING, editsStartingHandler);
//oplList.layer..addEventListener(GeometryServiceEvent.LENGTHS_COMPLETE, editsStartingHandler); This returns geometry event which I cannot use in editsStartingHandler().
oplList.layer.addEventListener(FeatureLayerEvent.SELECTION_COMPLETE, featureLayer_selectionComplete, false, 1);


private function editsStartingHandler(event:FeatureLayerEvent):void
   {
    
    //////////////////////////////////////////NEW ADDITION FOR ADDING LENGTH ON MAP /////////////////////////////////////////////////
    var geom:Geometry = new Geometry();
    var spatialref:Number=102003;
    var outSR:SpatialReference = new SpatialReference(spatialref);
    geom=event.adds[0].geometry;
    geometryService.project([ geom ], outSR);
    //var tok1:AsyncToken =geometryService.project([ geom ], outSR, new AsyncResponder(projectCompleteHandler, proj_fault, tok1));
    //tok.addResponder(new AsyncResponder(projectCompleteHandler, proj_fault, tok));
    var polyline:Polyline = geom as Polyline;
    
    //ViewerContainer.addEventListener("lengthCalc", sendServer);
    Alert.show("DONE!!!!");
    
    Alert.show(lengthFea.toString());
    trace("Before event.add");
     if (event.adds)
    {
     event.adds[0].attributes['transformation_transaction_id'] = ttid;
     event.adds[0].attributes['user_id'] = userIDNum;
     event.adds[0].attributes['user_name'] = userName;
     event.adds[0].attributes['active'] = _activeNo;
     event.adds[0].attributes['phase'] = "ACTIVE";
                                        event.adds[0].attributes['len'] = lengthFea;
    } 
        
    
   }

                    private function editsStartingHandler(event:FeatureLayerEvent):void
   {
    
    //////////////////////////////////////////NEW ADDITION FOR ADDING LENGTH ON MAP /////////////////////////////////////////////////
    var geom:Geometry = new Geometry();
    var spatialref:Number=102003;
    var outSR:SpatialReference = new SpatialReference(spatialref);
    geom=event.adds[0].geometry;
    geometryService.project([ geom ], outSR);
    //var tok1:AsyncToken =geometryService.project([ geom ], outSR, new AsyncResponder(projectCompleteHandler, proj_fault, tok1));
    //tok.addResponder(new AsyncResponder(projectCompleteHandler, proj_fault, tok));
    var polyline:Polyline = geom as Polyline;
    
    //ViewerContainer.addEventListener("lengthCalc", sendServer);
    Alert.show("DONE!!!!");
    
    Alert.show(lengthFea.toString());
    trace("Before event.add");
     if (event.adds)
    {
     event.adds[0].attributes['_id'] = id;
     event.adds[0].attributes['user_id'] = userIDNum;
     event.adds[0].attributes['user_name'] = userName;
     event.adds[0].attributes['active'] = _activeNo;
     event.adds[0].attributes['phase'] = "ACTIVE";
    } 
        
    
   }

        private function projectCompleteHandler(event:GeometryServiceEvent):void
   {
    var geom:Geometry = (event.result as Array)[0];
    var lengthsParameters:LengthsParameters = new LengthsParameters();
    
    var pLine:Polyline = Polyline(geom);
    lengthsParameters.geodesic = true;
    lengthsParameters.polylines = [ pLine ];
    //var tok2:AsyncToken =geometryService.lengths(lengthsParameters, new AsyncResponder(lengthsCompleteHandler, proj_fault, tok2));
    geometryService.lengths(lengthsParameters);
   }
   
   //private function lengthsCompleteHandler(result:Object, token:AsyncToken):void
   private function lengthsCompleteHandler(event:GeometryServiceEvent):void
   {
    var leng = (event.result as Array)[0]*3.28;
    var data:Object=
     {
      length:leng
     }
    ViewerContainer.dispatchEvent( new AppEvent("lengthCalc",data) );   
   }

//private function sendServer(event:AppEvent):void
   {
   //var lengthFea:String=event.data.length.toString();
   //Alert.show(lengthFea.toString());
   }

I am trying to find the Drawend event or the place where I can add the event listener before events.add[] and add a events.add[] in that listener function . I have used event listeners and asyc token responder...however I cannot catch the drawend event in this widget. Some help would be greatly appreciated. Thanks.

topic Controlling events in EDIT Widget in ArcGIS Viewer for Flex Questions

Controlling events in EDIT Widget