WIP

QuickLook/PluginManager.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using QuickLook.Plugin;
+
+namespace QuickLook
+{
+    internal class PluginManager
+    {
+        private static PluginManager _instance;
+
+        internal PluginManager()
+        {
+            LoadPlugins();
+        }
+
+        internal List<IViewer> LoadedPlugins { get; } = new List<IViewer>();
+
+        internal static PluginManager GetInstance()
+        {
+            return _instance ?? (_instance = new PluginManager());
+        }
+
+        private void LoadPlugins()
+        {
+            Directory.GetFiles(Path.Combine(App.AppPath, "Plugins\\"), "QuickLook.Plugin.*.dll",
+                    SearchOption.AllDirectories)
+                .ToList()
+                .ForEach(
+                    lib =>
+                    {
+                        (from t in Assembly.LoadFrom(lib).GetExportedTypes()
+                                where !t.IsInterface && !t.IsAbstract
+                                where typeof(IViewer).IsAssignableFrom(t)
+                                select t).ToList()
+                            .ForEach(type => LoadedPlugins.Add((IViewer) Activator.CreateInstance(type)));
+                    });
+        }
+    }
+}