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Geoprocessing tool link in popup
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Description
This sample demonstrates how to run a geoprocessing tool from a popup window. The popup class extends the default info window to provide additional capabilities including the ability to associate feature(s) with an info window. In this sample, a link is added to each popup window that use the Population geoprocessing service to calculate the population summary for the selected feature.
To run the geoprocessing task, a new link is added to the bottom of the popup in the 'actions list' section next to the zoom link. After creating the link, a function is registered that will run each time someone clicks on the link. The function, calculatePopulation, sets up and runs the geoprocessing task using the selected feature.
Code
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
<title>Extend Popup</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.26/esri/css/esri.css">
<style>
html,body, #mapDiv{
height:100%;
width:100%;
margin:0;
padding:0;
}
</style>
<script src="https://js.arcgis.com/3.26/"></script>
<script>
var map;
require([
"esri/map",
"esri/arcgis/utils",
"esri/tasks/Geoprocessor",
"esri/tasks/GeometryService",
"esri/tasks/BufferParameters",
"esri/geometry/webMercatorUtils",
"esri/SpatialReference",
"esri/tasks/FeatureSet",
"esri/symbols/SimpleFillSymbol",
"esri/graphic",
"esri/config",
"dojo/dom-construct",
"dojo/query",
"dojo/on",
"dojo/dom-attr",
"dojo/dom",
"esri/Color",
"dojo/domReady!"
], function(
Map,
arcgisUtils,
Geoprocessor,
GeometryService,
BufferParameters,
webMercatorUtils,
SpatialReference,
FeatureSet,
SimpleFillSymbol,
Graphic,
config,
domConstruct,
query,
on,
domAttr,
dom,
Color
) {
//This service is for development and testing purposes only. We recommend that you create your own geometry service for use within your applications.
config.defaults.geometryService = new GeometryService("https://sampleserver6.arcgisonline.com/arcgis/rest/services/Utilities/Geometry/GeometryServer");
config.defaults.io.proxyUrl = "/proxy/";
//create the map based on an arcgis online webmap id
arcgisUtils.createMap("a193c5459e6e4fd99ebf09d893d65cf0", "mapDiv").then(function(response){
window.map = response.map;
//setup the geoprocessing tool that will run when users click the new link. This tool
//calculates the population in the specified area.
window.gp = new Geoprocessor("https://sampleserver1.arcgisonline.com/ArcGIS/rest/services/Demographics/ESRI_Population_World/GPServer/PopulationSummary");
//create a link that we'll the map's popup window.
//The link section of the popup has a class called actionList assigned so we can
//use dojo/query to find the elements with this class name.
var link = domConstruct.create("a",{
"class": "action",
"id": "statsLink",
"innerHTML": "Population", //text that appears in the popup for the link
"href": "javascript: void(0);"
}, query(".actionList", window.map.infoWindow.domNode)[0]);
//when the link is clicked register a function that will run
on(link, "click", calculatePopulation);
});
function calculatePopulation(evt){
//display a message so user knows something is happening
domAttr.set(dom.byId("statsLink"), "innerHTML", "Calculating...");
//Get the feature associated with the displayed popup and use it as
//input to the geoprocessing task. The geoprocessing task will calculate
//population statistics for the area within the specified buffer distance.
var feature = window.map.infoWindow.getSelectedFeature();
var param = new BufferParameters();
param.geometries = [webMercatorUtils.webMercatorToGeographic(feature.geometry)];
param.distances = [10]; //buffer distance
param.unit = GeometryService.UNIT_KILOMETER;
param.bufferSpatialReference = new SpatialReference({"wkid": 4326});
param.outSpatialReference = new SpatialReference({"wkid": 102100});
param.geodesic = true;
config.defaults.geometryService.buffer(param, function(geometries){
var graphic = new Graphic(geometries[0]);
graphic.setSymbol(new SimpleFillSymbol().setColor(new Color([0,255,255,0.25])));
window.map.graphics.add(graphic);
//Use the buffered geometry as input to the GP task
var featureSet = new FeatureSet();
featureSet.geometryType = "esriGeometryPolygon";
featureSet.features = [graphic];
var taskParams = {
"inputPoly": featureSet
};
window.gp.execute(taskParams, gpResultAvailable, gpFailure);
});
}
function gpResultAvailable(results, messages){
domAttr.set(dom.byId("statsLink"),"innerHTML", "Population");
//clear any existing features displayed in the popup
window.map.infoWindow.clearFeatures();
//display the query results
var content = "";
if(results.length > 0){
content = "Population = " + results[0].value.features[0].attributes.SUM;
}else{
content = "No Results Found";
}
window.map.infoWindow.setContent(content);
}
function gpFailure(error){
domAttr.set(dom.byId("statsLink"),"innerHTML", "Population");
var details = domConstruct.create("div", {
"innerHTML": "Population = " + error
}, query(".break", window.map.infoWindow.domNode)[0],"after" );
console.error("Error occurred: ", error);
}
});
</script>
</head>
<body>
<div id="mapDiv"></div>
</body>
</html>