new LayerToggle widget

tmcgee · Dec 12, 2016 · c62f162 · c62f162
1 parent e492bf6
commit c62f162
Showing 1 changed file with 39 additions and 0 deletions.
diff --git a/widgets/LayerToggle.js b/widgets/LayerToggle.js
@@ -0,0 +1,39 @@
+define([
+    'dojo/_base/declare',
+    'dijit/_WidgetBase',
+    'dojo/topic',
+    'dojo/_base/array',
+    'dojo/_base/lang'
+], function (
+    declare,
+    _WidgetBase,
+    topic,
+    array,
+    lang
+) {
+    return declare([_WidgetBase], {
+        map: true,
+
+        // array of IDs for layers that can be toggled
+        layerGroup: [],
+
+        // ID of labels layer (if any)
+        labelsID: null,
+
+        postCreate: function () {
+            this.inherited(arguments);
+            topic.subscribe('layerControl/layerToggle', lang.hitch(this, function (r) {
+                if (array.indexOf(this.layerGroup, r.id) >= 0) {
+                    array.forEach(this.layerGroup, lang.hitch(this, function (id) {
+                        if (id !== r.id) {
+                            var lyr = this.map.getLayer(id);
+                            if (lyr) {
+                                lyr.setVisibility(false);
+                            }
+                        }
+                    }));
+                }
+            }));
+        }
+    });
+});