Add i18n support [WIP]

Wox.Core/UI/ResourceMerger.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Linq;
+using System.Windows;
+using Wox.Core.i18n;
+using Wox.Core.Theme;
+
+namespace Wox.Core.UI
+{
+    public class ResourceMerger
+    {
+        public static void ApplyResources()
+        {
+            var UIResourceType = typeof(IUIResource);
+            var UIResources = AppDomain.CurrentDomain.GetAssemblies()
+                .SelectMany(s => s.GetTypes())
+                .Where(p => p.IsClass && !p.IsAbstract && UIResourceType.IsAssignableFrom(p));
+
+            Application.Current.Resources.MergedDictionaries.Clear();
+
+            foreach (var uiResource in UIResources)
+            {
+                Application.Current.Resources.MergedDictionaries.Add(
+                    ((IUIResource)Activator.CreateInstance(uiResource)).GetResourceDictionary());
+            }
+        }
+    }
+}