Issue 5778 - Hide More filters section when there is no filter

new-options.js

Index: new-options.js
===================================================================
--- a/new-options.js
+++ b/new-options.js
@@ -52,24 +52,35 @@
     this.items = [];
   }
 
-  Collection.prototype._setEmpty = function(table, texts)
+  Collection.prototype._setEmpty = function(table, detail, removeEmpty)
   {
-    let placeholders = table.querySelectorAll(".empty-placeholder");
+    if (removeEmpty)
+    {
+      let placeholders = table.querySelectorAll(".empty-placeholder");
+      if (placeholders.length > 0)
+      {
+        for (let placeholder of placeholders)
+          table.removeChild(placeholder);
+      }
 
-    if (texts && placeholders.length == 0)
+      if (detail.removeEmptyAction)
+        execAction(detail.removeEmptyAction, table);
+    }
+    else
     {
-      for (let text of texts)
+      if (detail.emptyText)
       {
-        let placeholder = document.createElement("li");
-        placeholder.className = "empty-placeholder";
-        placeholder.textContent = getMessage(text);
-        table.appendChild(placeholder);
+        for (let text of detail.emptyText)
+        {
+          let placeholder = document.createElement("li");
+          placeholder.className = "empty-placeholder";
+          placeholder.textContent = getMessage(text);
+          table.appendChild(placeholder);
+        }
       }
-    }
-    else if (placeholders.length > 0)
-    {
-      for (let placeholder of placeholders)
-        table.removeChild(placeholder);
+
+      if (detail.setEmptyAction)
+        execAction(detail.setEmptyAction, table);
     }
   };
 
@@ -153,7 +164,7 @@
         }
       }
 
-      this._setEmpty(table, null);
+      this._setEmpty(table, detail, true);
       if (table.children.length > 0)
         table.insertBefore(listItem, table.children[this.items.indexOf(item)]);
       else
@@ -199,7 +210,7 @@
 
       element.parentElement.removeChild(element);
       if (this.items.length == 0)
-        this._setEmpty(table, detail.emptyText);
+        this._setEmpty(table, detail);
     }
   };
 
@@ -316,7 +327,7 @@
         element = element.nextElementSibling;
       }
 
-      this._setEmpty(table, detail.emptyText);
+      this._setEmpty(table, detail);
     }
   };
 
@@ -354,7 +365,9 @@
   ]);
   collections.more = new Collection([
     {
-      id: "more-list-table"
+      id: "more-list-table",
+      setEmptyAction: "hide-more-section",
+      removeEmptyAction: "show-more-section"
     }
   ]);
   collections.whitelist = new Collection([
@@ -583,6 +596,9 @@
       case "edit-custom-filters":
         setCustomFiltersView("write");
         break;
+      case "hide-more-section":
+        E("more-filters").setAttribute("aria-hidden", true);
+        break;
       case "hide-notification":
         hideNotification();
         break;
@@ -626,6 +642,9 @@
           setCustomFiltersView("read");
         });
         break;
+      case "show-more-section":
+        E("more-filters").setAttribute("aria-hidden", false);
+        break;
       case "switch-acceptable-ads":
         let value = element.value || element.dataset.value;
         ext.backgroundPage.sendMessage({