NoashX.github.io/JavaScriptEvents.html at master · bsnider/NoashX.github.io · GitHub

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<!doctype html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
    <title>JavaScript Events</title>

    <link rel="stylesheet" href="http://js.arcgis.com/3.11/dijit/themes/tundra/tundra.css">
    <link rel="stylesheet" href="http://js.arcgis.com/3.11/esri/css/esri.css">
    <style>
            html, body { height: 100%; width: 100%; margin: 0; padding: 0; }
      h3 { margin: 0 0 5px 0; border-bottom: 1px solid #444; text-align: center }
      .shadow {
        -moz-box-shadow: 0 0 5px #888;
        -webkit-box-shadow: 0 0 5px #888;
        box-shadow: 0 0 5px #888;
      }
      #map{ margin: 0; padding: 0; }
      #feedback {
        background: #fff;
        color: #444;
        position: absolute;
        font-family: arial;
        height: 85px;
        left: 30px;
        margin: 5px;
        padding: 10px;
        bottom: 44px;
        text-align: center;
        width: 300px;
        z-index: 40;
      }
      .note { font-size: 80%; padding: 0 0 10px 0; }
      #slider {
        color: #666;
        margin: 5px auto;
        padding: 3px;
      }
      #appSliderLabel { padding: 0 0 10px 0; }
      #maxLabel { display: inline-block; margin: 0 0 0 -30px;}
      #minLabel { display: inline-block; margin: 0 0 0 30px;}
      #breakInfo { padding: 20px 0 0 0; }

    </style>

    <script src="http://js.arcgis.com/3.11/"></script>
    <script>
    // the infos object is used to track layer visibility and position
    var map, usaLayer, infos = {};

    require([
      "esri/map", "esri/layers/ArcGISDynamicMapServiceLayer",
      "esri/layers/ArcGISTiledMapServiceLayer", "esri/renderers/SimpleRenderer",
      "esri/layers/DynamicLayerInfo", "esri/layers/LayerDataSource",
      "esri/layers/LayerMapSource",
      "esri/layers/LayerDrawingOptions", "esri/layers/TableDataSource",
      "esri/Color", "esri/renderers/SimpleRenderer",
      "esri/symbols/SimpleFillSymbol", "esri/symbols/SimpleLineSymbol",
      "dojo/dom", "dojo/dom-construct", "dojo/dom-style",
      "dojo/query", "dojo/on",
      "dojo/parser", "dojo/_base/array", "dojo/dnd/Source", "dijit/registry",
      "dijit/layout/BorderContainer", "dijit/layout/ContentPane",
      "dijit/form/Button", "dojo/domReady!"
    ], function(
      Map, ArcGISDynamicMapServiceLayer,
      ArcGISTiledMapServiceLayer, SimpleRenderer,
      DynamicLayerInfo, LayerDataSource,
      LayerDrawingOptions, TableDataSource,
      LayerMapSource,
      Color, SimpleRenderer,
      SimpleFillSymbol, SimpleLineSymbol,
      dom, domConstruct, domStyle,
      query, on,
      parser, arrayUtils, Source, registry
    ) {

      parser.parse();

      map = new Map("map", {
        //basemap: "gray",
        center: [-93.636, 46.882],
        zoom: 3,
        sliderStyle: 'small'
      });

      //use the new dark gray tiles for the basemap
      var darkGray = new ArcGISTiledMapServiceLayer("http://services.arcgisonline.com/arcgis/rest/services/Canvas/World_Dark_Gray_Base/MapServer");
      map.addLayer(darkGray);

     map.on("load", function() {
        map.on("zoom-end", updateScale);
        updateScale();
        map.on("pan-end", updateExtent);
        map.on("zoom-start", updateOldLevel);
        map.on("zoom-end", updateNewLevel);
        //updateExtent();
      });


       usaLayer = new ArcGISDynamicMapServiceLayer("http://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer", {
        "id": "usa"
      });

      //sets the visibility for all 4 layers in the map service
	  usaLayer.setVisibleLayers([0,1,2,3]);

      var dynamicLayerInfos = [];

     //need to define dynamicLayerInfos for layers 0 and 1 or else the above visibility will be overridden
     //default minScale for blue points is 99,999
     //this is changed to 72,000 and now you have to zoom in once to see the layer (was visible on load by default)
      var dynamicLayerInfo0 = new DynamicLayerInfo({
            "id":0,
            "defaultVisibility":true,
            "maxScale":0,
            "minScale":75000,
            "parentLayerId":-1
            });
      var dynamicLayerInfo1 = new DynamicLayerInfo({
            "id":1,
            "defaultVisibility":true,
            "maxScale":0,
            "minScale":75000,
            "parentLayerId":-1
            });
      var dynamicLayerInfo2 = new DynamicLayerInfo({
            "id":2,
            "defaultVisibility":true,
            "maxScale":75000,
            "minScale":72000000,
            "parentLayerId":-1
            });
      var dynamicLayerInfo3 = new DynamicLayerInfo({
            "id":3,
            "defaultVisibility":true,
            "maxScale":5000000,
            "minScale":100000000,
            "parentLayerId":-1
            });

      //push the dynamic layer info to the dynamic map service
      dynamicLayerInfos.push(dynamicLayerInfo0);
      dynamicLayerInfos.push(dynamicLayerInfo1);
      dynamicLayerInfos.push(dynamicLayerInfo2);
      dynamicLayerInfos.push(dynamicLayerInfo3);

      usaLayer.setDynamicLayerInfos(dynamicLayerInfos, true);


      usaLayer.on("load", load);
      map.addLayer(usaLayer);

      //when layer is added, fire this event
      function load (evt) {
        console.log("layer 1 minScale: " + evt.layer.dynamicLayerInfos[0].minScale);
        console.log("layer 2 minScale: " + evt.layer.dynamicLayerInfos[1].minScale);
        console.log("layer 3 minScale: " + evt.layer.dynamicLayerInfos[2].minScale);
        console.log("layer 4 minScale: " + evt.layer.dynamicLayerInfos[3].minScale);
      }

      //when the map is loaded, and whenever the map is zoomed, fire this event
      function updateScale() {
        dojo.byId("map-scale").innerHTML = dojo.number.format(parseInt(map.getScale()));
        console.log("Map scale: " + dojo.number.format(parseInt(map.getScale())));

      }

      //when the map is panned, fire this event
      function updateExtent(evt) {
        console.log("Map extent");
        console.log(" XMin: " + evt.extent.xmin);
        console.log(" YMin: " + evt.extent.ymin);
        console.log(" XMax: " + evt.extent.xmax);
        console.log(" YMax: " + evt.extent.ymax);
      }

       //when the map zoom starts, fire this event
      function updateOldLevel(evt) {
        console.log("Map zoom level was: " + evt.level);
      }

      //when the map zoom ends, fire this event
      function updateNewLevel(evt) {
        console.log("Map zoom level is: " + evt.level);
      }


    });
    </script>
  </head>

   <body class="tundra">
    <div data-dojo-type="dijit/layout/BorderContainer"
         data-dojo-props="design:'headline',gutters:false"
         style="width: 100%; height: 100%; margin: 0;">
      <div id="map"
           data-dojo-type="dijit/layout/ContentPane"
           data-dojo-props="region:'center'">

        <div id="feedback" class="shadow">
          <b>Map scale: <span id="map-scale">unknown</span></b></br></br>
          States: 5,000,000 to 100,000,000</br>
          Counties: 75,000 to 72,000,000</br>
          Points: 0 to 75,0000
        </div>
      </div>
    </div>
  </body>
</html>