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default.html
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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=7,IE=9">
<meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
<title>Default Cluster Layer</title>
<link rel="shortcut icon" href="//esri.github.io/quickstart-map-js/images/favicon.ico">
<!-- ArcGIS API for JavaScript CSS-->
<link rel="stylesheet" href="https://js.arcgis.com/3.15/esri/css/esri.css">
<style>
html, body, #mapDiv {
height: 100%;
width: 100%;
margin: 0;
background-color: rgb(34, 35, 39);
}
#search {
display: block;
position: absolute;
z-index: 2;
top: 19px;
left: 62px;
}
#homeButton {
position: absolute;
top: 95px;
left: 16px;
z-index: 50;
}
.HomeButton .home {
width: 27px;
height: 27px;
}
/* Geocoder */
.simpleGeocoder .esriGeocoderContainer {
width: 225px;
}
/* Zoom buttons */
.esriSimpleSliderTL {
left: 16px;
}
/* Popup */
.esriPopup.light .contentPane {
padding-top: 0;
}
.esriPopup.light .contentPane > p {
margin: 5px 0;
}
</style>
<script type="text/javascript">
window.dojoConfig = {
async: true,
packages: [
{
name: 'app',
location: window.location.pathname.substring(0, window.location.pathname.lastIndexOf('/')) + '/src'
}
]};
</script>
<!-- ArcGIS API for JavaScript library references -->
<script src="https://js.arcgis.com/3.15compact"></script>
<script>
require(["esri/map",
"esri/dijit/Geocoder",
"esri/dijit/HomeButton",
"esri/InfoTemplate",
"esri/graphic",
"app/clusterfeaturelayer",
"dojo/domReady!"],
function (Map, Geocoder, HomeButton, InfoTemplate, Graphic, ClusterFeatureLayer) {
// Locals
var map,
popup,
clusterLayer,
geocoder,
infoTemplate,
selectedSym;
// Create map
map = new Map("mapDiv", {
basemap: "dark-gray",
center: [-43, 40],
zoom: 3
});
// Add clusters
map.on("load", function () {
// Add layer
addClusterLayer();
addClusterLayerEvents();
});
// Save the last selected graphic
map.infoWindow.on("selection-change", function () {
addSelectedFeature();
});
// Create widget
geocoder = new Geocoder({
value: "Washington, D. C., District of Columbia, United States",
autoNavigate: true,
maxLocations: 25,
autoComplete: true,
arcgisGeocoder: {
outFields: "Place_addr, PlaceName, Score"
},
map: map
}, "search");
geocoder.startup();
var home = new HomeButton({
map: map
}, "homeButton");
home.startup();
// Set popup
popup = map.infoWindow;
popup.highlight = false;
popup.titleInBody = false;
popup.domNode.className += " light";
// Popup content
infoTemplate = new InfoTemplate("<b>City Data</b>", "<p>NAME: ${CITY_NAME}</p><p>COUNTRY: ${CNTRY_NAME}</p><p>CAPITAL: ${ADMIN_NAME}</p><p>POPULATION: ${POP}</p>");
// Create a feature layer to get feature service
function addClusterLayer() {
clusterLayer = new ClusterFeatureLayer({
"url": "http://services.arcgis.com/P3ePLMYs2RVChkJx/arcgis/rest/services/World_Cities/FeatureServer/0",
"distance": 75,
"id": "clusters",
"labelColor": "#fff",
"resolution": map.extent.getWidth() / map.width,
"singleTemplate": infoTemplate,
"useDefaultSymbol": false,
"zoomOnClick": true,
"showSingles": true,
"objectIdField": "FID",
outFields: ["CITY_NAME", "CNTRY_NAME", "POP", "ADMIN_NAME"]
});
map.addLayer(clusterLayer);
}
// Hide popup if selected feature is clustered
function onClustersShown(clusters) {
var i = 0,
extent;
if (map.infoWindow.isShowing && map.infoWindow._lastSelected) {
for (i; i < clusters.length; i++) {
if (clusters[i].attributes.clusterCount > 1) {
extent = clusterLayer._getClusterExtent(clusters[i]);
if (extent.contains(map.infoWindow._lastSelected.geometry)) {
map.infoWindow.hide();
break;
}
}
}
}
}
// Wire cluster layer events
function addClusterLayerEvents() {
// Clusters drawn
clusterLayer.on("clusters-shown", onClustersShown);
}
// Set selected
function addSelectedFeature() {
var selIndex = map.infoWindow.selectedIndex,
selFeature;
if (selIndex !== -1) {
selFeature = map.infoWindow.features[selIndex];
// Remove old feature first
removeSelectedFeature();
// Add new graphic
map.infoWindow._lastSelected = new Graphic(selFeature.toJson());
map.infoWindow._lastSelected.setSymbol(selectedSym);
map.graphics.add(map.infoWindow._lastSelected);
}
}
// Remove selected
function removeSelectedFeature() {
if (map.infoWindow._lastSelected) {
map.graphics.remove(map.infoWindow._lastSelected);
map.infoWindow._lastSelected = null;
}
}
});
</script>
</head>
<body>
<div id="mapDiv"></div>
<div id="search"></div>
<div id="homeButton"></div>
</body>
</html>