update in filter for empty options array.

lib/ui/layers/filters.mjs

@@ -13,16 +13,12 @@ export default {
 
 let timeout;
 
-function applyFilter(layer, zoom) {
-  clearTimeout(timeout);
+function applyFilter(layer) {
 
-  // enable zoomToExtent button.
-  let btn = layer.view.querySelector('[data-id=zoomToExtent]')
-  if (btn) btn.disabled = false;
+  clearTimeout(timeout);
 
   // Debounce layer reload by 500
   timeout = setTimeout(() => {
-    timeout = null;
     layer.reload();
     layer.mapview.Map.getTargetElement().dispatchEvent(new Event('changeEnd'))
   }, 500);
@@ -192,11 +188,20 @@ async function filter_in(layer, filter) {
       })),
       callback: async (e, options) => {
 
-        Object.assign(layer.filter.current, {
-          [filter.field]:{
-            [filter.type]: options
-          }
-        })
+        if (!options.length) {
+
+          // Remove empty array filter.
+          delete layer.filter.current[filter.field]
+        } else {
+
+          // Set filter values array from options.
+          Object.assign(layer.filter.current, {
+            [filter.field]:{
+              [filter.type]: options
+            }
+          })
+        }
+
         layer.reload()
         layer.mapview.Map.getTargetElement().dispatchEvent(new Event('changeEnd'))
       }