Add GPL modules

MediaBrowser.Common/Progress/ActionableProgress.cs

@@ -0,0 +1,54 @@
+using System;
+using System.Collections.Generic;
+
+namespace MediaBrowser.Common.Progress
+{
+    /// <summary>
+    /// Class ActionableProgress
+    /// </summary>
+    /// <typeparam name="T"></typeparam>
+    public class ActionableProgress<T> : IProgress<T>
+    {
+        /// <summary>
+        /// The _actions
+        /// </summary>
+        private Action<T> _action;
+        public event EventHandler<T> ProgressChanged;
+
+        /// <summary>
+        /// Registers the action.
+        /// </summary>
+        /// <param name="action">The action.</param>
+        public void RegisterAction(Action<T> action)
+        {
+            _action = action;
+        }
+
+        public void Report(T value)
+        {
+            if (ProgressChanged != null)
+            {
+                ProgressChanged(this, value);
+            }
+
+            var action = _action;
+            if (action != null)
+            {
+                action(value);
+            }
+        }
+    }
+
+    public class SimpleProgress<T> : IProgress<T>
+    {
+        public event EventHandler<T> ProgressChanged;
+
+        public void Report(T value)
+        {
+            if (ProgressChanged != null)
+            {
+                ProgressChanged(this, value);
+            }
+        }
+    }
+}