extension changes

mpv.net/Misc/Extension.cs

@@ -0,0 +1,51 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.ComponentModel.Composition.Hosting;
+using System.IO;
+using System.Windows.Forms;
+
+namespace mpvnet
+{
+    public class Extension
+    {
+        [ImportMany]
+        public IEnumerable<IExtension> Extensions = null;
+
+        readonly CompositionContainer CompositionContainer;
+
+        public Extension()
+        {
+            try
+            {
+                AggregateCatalog catalog = new AggregateCatalog();
+
+                string dir = Application.StartupPath + "\\Extensions";
+
+                if (Directory.Exists(dir))
+                    foreach (string i in Directory.GetDirectories(dir))
+                        catalog.Catalogs.Add(new DirectoryCatalog(i, "*Extension.dll"));
+
+                dir = mp.ConfigFolder + "\\Extensions";
+
+                if (Directory.Exists(dir))
+                    foreach (string i in Directory.GetDirectories(dir))
+                        catalog.Catalogs.Add(new DirectoryCatalog(i, "*Extension.dll"));
+
+                if (catalog.Catalogs.Count > 0)
+                {
+                    CompositionContainer = new CompositionContainer(catalog);
+                    CompositionContainer.ComposeParts(this);
+                }
+            }
+            catch (Exception ex)
+            {
+                Msg.ShowException(ex);
+            }
+        }
+    }
+
+    public interface IExtension
+    {
+    }
+}