Filter Colorizer dialog languages

OneMore/Commands/Edit/ColorizeDialog.cs

@@ -4,11 +4,14 @@
 
 namespace River.OneMoreAddIn.Commands
 {
+	using River.OneMoreAddIn.Settings;
 	using System;
 	using System.Collections.Generic;
 	using System.Drawing;
 	using System.IO;
+	using System.Linq;
 	using System.Windows.Forms;
+	using System.Xml.Linq;
 	using Colorizer = Colorizer.Colorizer;
 	using Resx = Properties.Resources;
 
@@ -29,7 +32,7 @@ public ColorizeDialog()
 				});
 			}
 
-			var languages = Colorizer.LoadLanguageNames();
+			var languages = LoadFilteredLanguages();
 			var imageList = MakeImageList(languages);
 
 			view.SmallImageList = imageList;
@@ -50,6 +53,26 @@ public ColorizeDialog()
 		}
 
 
+		public static IDictionary<string, string> LoadFilteredLanguages()
+		{
+			var languages = Colorizer.LoadLanguageNames();
+
+			// load hidden languages from Settings
+			var hidden = new SettingsProvider()
+				.GetCollection(nameof(ColorizerSheet))
+				.Get(ColorizerSheet.HiddenKey, new XElement(ColorizerSheet.HiddenKey));
+
+			// remove hidden languages
+			var keys = languages.Keys.ToList();
+			foreach (var key in keys.Where(key => hidden.Element(languages[key]) is not null))
+			{
+				languages.Remove(key);
+			}
+
+			return languages;
+		}
+
+
 		public string LanguageKey => view.SelectedItems.Count == 0
 			? null
 			: view.SelectedItems[0].Tag as string;