Remove 'foo' / 'extentload' event, no longer necessary

Author: prushforth

src/layer.js

@@ -222,7 +222,7 @@ export class MapLayer extends HTMLElement {
     // user checking/unchecking the layer from the layer control
     // this must be done *after* the layer is actually added to the map
     this._layer.on('add remove', this._onLayerChange, this);
-    this._layer.on('add remove foo', this._validateDisabled, this);
+    this._layer.on('add remove', this._validateDisabled, this);
     // toggle the this.disabled attribute depending on whether the layer
     // is: same prj as map, within view/zoom of map
     this._layer._map.on('moveend layeradd', this._validateDisabled, this);

src/mapml/control/LayerControl.js

@@ -63,7 +63,6 @@ export var LayerControl = L.Control.Layers.extend({
     // on the map it does not generate layer events
     for (var i = 0; i < this._layers.length; i++) {
       this._layers[i].layer.off('add remove', this._onLayerChange, this);
-      this._layers[i].layer.off('foo', this._validateInput, this);
     }
   },
   addOrUpdateOverlay: function (layer, name) {
@@ -163,11 +162,6 @@ export var LayerControl = L.Control.Layers.extend({
     obj.input.layerId = L.stamp(obj.layer);
 
     L.DomEvent.on(obj.input, 'click', this._onInputClick, this);
-    // this is necessary because when there are several layers in the
-    // layer control, the response to the last one can be a long time
-    // after the info is first displayed, so we have to go back and
-    // verify the layer element is not disabled and can have an enabled input.
-    obj.layer.on('foo', this._validateInput, this);
     this._overlaysList.appendChild(layercontrols);
     return layercontrols;
   },

src/mapml/layers/MapMLLayer.js

@@ -174,19 +174,6 @@ export var MapMLLayer = L.Layer.extend({
       this._properties._mapExtents[0]._templateVars
     ) {
       createAndAdd();
-    } else {
-      // wait for extent to be loaded
-      this.once(
-        'foo',
-        function () {
-          if (!this._validProjection(map)) {
-            this.validProjection = false;
-            return;
-          }
-          createAndAdd();
-        },
-        this
-      );
     }
     this._setLayerElExtent();
 
@@ -896,7 +883,6 @@ export var MapMLLayer = L.Layer.extend({
         // if layer does not have a parent Element, do not need to set Controls
         layer._layerEl.parentElement._toggleControls();
       }
-      layer.fire('foo', layer, false);
       // local functions
       // sets layer._properties.projection.  Supposed to replace / simplify
       // the dependencies on convoluted getProjection() interface, but doesn't quite