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Legendvisible.html
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<!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>Updating the legend to display visible layers</title>
<link rel="stylesheet" href="https://js.arcgis.com/3.15/dijit/themes/claro/claro.css">
<link rel="stylesheet" href="https://js.arcgis.com/3.15/esri/css/esri.css">
<style>
html, body {
height: 97%;
width: 98%;
margin: 1%;
}
#rightPane {
width: 20%;
}
#legendPane {
border: solid #97DCF2 1px;
}
</style>
<script src="https://js.arcgis.com/3.15/"></script>
<script>
var map;
require([
"esri/map",
"esri/arcgis/utils",
"esri/dijit/Legend",
"esri/layers/ArcGISDynamicMapServiceLayer",
"dojo/dom",
"dojo/dom-construct",
"dojo/parser",
"dojo/_base/array",
"dijit/form/CheckBox",
"dijit/layout/AccordionContainer",
"dijit/layout/BorderContainer",
"dijit/layout/ContentPane",
"dojo/domReady!"
],
function (
Map, utils, Legend, ArcGISDynamicMapServiceLayer, dom, domConstruct,
parser, arrayUtils, CheckBox
) {
parser.parse();
var legendLayers = [];
map = new Map("map", {
basemap: "topo",
center: [-117.45, 34.338],
zoom: 10
});
var quakeLayer = new ArcGISDynamicMapServiceLayer("http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Earthquakes/EarthquakesFromLastSevenDays/MapServer", {
id: 'quakes'
});
legendLayers.push({ layer: quakeLayer, title: 'Earthquakes' });
var fireLayer = new ArcGISDynamicMapServiceLayer("http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Fire/Sheep/MapServer", {
id: 'fire'
});
map.on('layers-add-result', function () {
var legend = new Legend({
map: map,
layerInfos: legendLayers
}, "legendDiv");
legend.startup();
});
legendLayers.push({ layer: fireLayer, title: "Fire" });
map.addLayers([ fireLayer, quakeLayer ]);
map.on('layers-add-result', function () {
//add check boxes
arrayUtils.forEach(legendLayers, function (layer) {
var layerName = layer.title;
var checkBox = new CheckBox({
name: "checkBox" + layer.layer.id,
value: layer.layer.id,
checked: layer.layer.visible
});
checkBox.on("change", function () {
var targetLayer = map.getLayer(this.value);
targetLayer.setVisibility(!targetLayer.visible);
this.checked = targetLayer.visible;
});
//add the check box and label to the toc
domConstruct.place(checkBox.domNode, dom.byId("toggle"), "after");
var checkLabel = domConstruct.create('label', {
'for': checkBox.name,
innerHTML: layerName
}, checkBox.domNode, "after");
domConstruct.place("<br />", checkLabel, "after");
});
});
});
</script>
</head>
<body class="claro">
<!--[if IE 7]>
<style>
html, body {
margin: 0;
}
</style>
<![endif]-->
<div id="content" data-dojo-type="dijit/layout/BorderContainer"
data-dojo-props="design:'headline', gutters:true"
style="width: 100%; height: 100%; margin: 0;">
<div id="rightPane"
data-dojo-type="dijit/layout/ContentPane"
data-dojo-props="region:'right'">
<div data-dojo-type="dijit/layout/AccordionContainer">
<div data-dojo-type="dijit/layout/ContentPane" id="legendPane"
data-dojo-props="title:'Legend', selected:true">
<div id="legendDiv"></div>
</div>
<div data-dojo-type="dijit/layout/ContentPane"
data-dojo-props="title:'Natural Disasters'">
<span style="padding:10px 0;">Click to toggle the visibility of the various natural disasters</span>
<div id="toggle" style="padding: 2px 2px;"></div>
</div>
</div>
</div>
<div id="map"
data-dojo-type="dijit/layout/ContentPane"
data-dojo-props="region:'center'"
style="overflow:hidden;">
</div>
</div>
</body>
</html>