Fix exclusive for action keyword

Wox/Helper/ListBoxItems.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Collections.Specialized;
+using System.ComponentModel;
+using System.Linq;
+using Wox.Plugin;
+
+namespace Wox.Helper
+{
+    class ListBoxItems : ObservableCollection<Result>
+    {
+        public void RemoveAll(Predicate<Result> predicate)
+        {
+            CheckReentrancy();
+
+            List<Result> itemsToRemove = Items.Where(x => predicate(x)).ToList();
+            if (itemsToRemove.Count > 0)
+            {
+                itemsToRemove.ForEach(item => Items.Remove(item));
+
+                OnPropertyChanged(new PropertyChangedEventArgs("Count"));
+                OnPropertyChanged(new PropertyChangedEventArgs("Item[]"));
+                // fuck ms http://blogs.msdn.com/b/nathannesbit/archive/2009/04/20/addrange-and-observablecollection.aspx
+                OnCollectionChanged(new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
+            }
+        }
+    }
+}