node-red-contrib-jwht-map/worldmap/leaflet/leaflet.active-layers.min.js

L.Control.ActiveLayers=L.Control.Layers.extend({getActiveBaseLayer:function(){return this._activeBaseLayer},getActiveOverlayLayers:function(){return this._activeOverlayLayers},onAdd:function(a){var b=L.Control.Layers.prototype.onAdd.call(this,a);return this._activeBaseLayer=this._findActiveBaseLayer(),this._activeOverlayLayers=this._findActiveOverlayLayers(),b},_findActiveBaseLayer:function(){var a=this._layers;for(var b in a)if(this._layers.hasOwnProperty(b)){var c=a[b];if(!c.overlay&&this._map.hasLayer(c.layer))return c}throw new Error("Control doesn't have any active base layer!")},_findActiveOverlayLayers:function(){var a={},b=this._layers;for(var c in b)if(this._layers.hasOwnProperty(c)){var d=b[c];d.overlay&&this._map.hasLayer(d.layer)&&(a[c]=d)}return a},_onLayerChange:function(){L.Control.Layers.prototype._onLayerChange.apply(this,arguments),this._recountLayers()},_onInputClick:function(){this._handlingClick=!0,this._recountLayers(),L.Control.Layers.prototype._onInputClick.call(this),this._handlingClick=!1},_recountLayers:function(){var a,b,c,d=this._form.getElementsByTagName("input"),e=d.length;for(a=0;e>a;a++)b=d[a],c=this._layers[b.layerId],b.checked&&!this._map.hasLayer(c.layer)?c.overlay?this._activeOverlayLayers[b.layerId]=c:this._activeBaseLayer=c:!b.checked&&this._map.hasLayer(c.layer)&&c.overlay&&delete this._activeOverlayLayers[b.layerId]}}),L.control.activeLayers=function(a,b,c){return new L.Control.ActiveLayers(a,b,c)};