Added support to add & remove layer(s) from the Layer Control

//add new layer
function _setupSampleLayer(args) {
var layer = args.layer;
var target = args.target;
layer.setVisibility(true);
layer.opacity = 1;
for (var i = 0; i < 8; i++) {
var eLayerInfo = layer.layerInfos[i];
eLayerInfo.defaultVisibility = true
}
};
function _loadSampleLayer() {
var imageParameters = new esri.layers.ImageParameters();
imageParameters.layerIds = [0,1,2,3,4,5,6,7];
imageParameters.layerOption =
esri.layers.ImageParameters.LAYER_OPTION_SHOW;
var layer = new
esri.layers.ArcGISDynamicMapServiceLayer("http://<server>/arcgis/rest/services/<service>/MapServer",
{id: "MyMapService",
visible : true,
imageParameters : imageParameters
}
);
layer.on("load", function(args) {
_setupSampleLayer(args);
});
layer.on("error", function(args) {
debugger;
});
this.app.map.addLayer(layer);
this.app.map.on("layer-add-result", function(args) {
var layer = args.layer;
var error = args.error;
var layerInfo = {
title : "My Sample Title",
type : "dynamic",
layer : layer
}
dojo.publish('layerControl/addLayerControls', [[layerInfo]]);
});
}

//remove layer
dojo.publish("layerControl/removeLayerControls", [["My Sample Title"]])

viewer/js/gis/dijit/LayerControl.js

@@ -118,10 +118,22 @@ define([
                 this.overlayReorder = false;
                 this.vectorReorder = false;
             }
-            // load only the modules we need
+			this._addLayerControls(this.layerInfos);
+			this._subscribeToTopics();
+        },
+		_subscribeToTopics() {
+            this._removeLayerControlsHandler = topic.subscribe('layerControl/removeLayerControls', lang.hitch(this, function (layerTitles) {
+               this._removeLayerControls(layerTitles);
+            }));
+            this._addLayerControlsHandler = topic.subscribe('layerControl/addLayerControls', lang.hitch(this, function (layerInfos) {
+               this._addLayerControls(layerInfos);
+            }));
+		},
+		_addLayerControls: function(layerInfos) {
+			// load only the modules we need
             var modules = [];
             // push layer control mods
-            array.forEach(this.layerInfos, function (layerInfo) {
+            array.forEach(layerInfos, function (layerInfo) {
                 // check if control is excluded
                 var controlOptions = layerInfo.controlOptions;
                 if (controlOptions && controlOptions.exclude === true) {
@@ -139,7 +151,7 @@ define([
             }, this);
             // load and go
             require(modules, lang.hitch(this, function () {
-                array.forEach(this.layerInfos, function (layerInfo) {
+                array.forEach(layerInfos, function (layerInfo) {
                     // exclude from widget
                     var controlOptions = layerInfo.controlOptions;
                     if (controlOptions && controlOptions.exclude === true) {
@@ -152,6 +164,32 @@ define([
                 }, this);
                 this._checkReorder();
             }));
+		},
+        // remove the control given an array of layerTitles
+        _removeLayerControls: function (layerTitles) {
+			// helper function to determine which children's title have a match in the layerTitles parameter
+			var _filterList = function (entry) {
+				 return layerTitles.reduce(function(prior,curr){ return (curr === entry.layerTitle)||prior}, false);
+			}
+			// get a list of ALL the layers that meet the criteria
+			var layerControlList = this._overlayContainer.getChildren().filter( function(c) { return _filterList(c)}).concat(
+				this._vectorContainer.getChildren().filter( function(c) { return _filterList(c)}).concat(
+					this.getChildren().filter( function(c) { return _filterList(c)})
+					)
+				);
+			// follow the same logic as when the layers were added
+			array.forEach(layerControlList, lang.hitch(this, function (layerControl) {
+				if (this.separated) {
+					if (layerControl._layerType === 'overlay') {
+						this._overlayContainer.removeChild(layerControl);
+					} else {
+						this._vectorContainer.removeChild(layerControl);
+					}
+				}
+				else {
+					this.removeChild(layerControl);
+				}
+			}));
         },
         // create layer control and add to appropriate _container
         _addControl: function (layerInfo, Control) {