Pushing missing changes

MediaBrowser.Common/Progress/ActionableProgress.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Collections.Generic;
+
+namespace MediaBrowser.Common.Progress
+{
+    /// <summary>
+    /// Class ActionableProgress
+    /// </summary>
+    /// <typeparam name="T"></typeparam>
+    public class ActionableProgress<T> : Progress<T>, IDisposable
+    {
+        /// <summary>
+        /// The _actions
+        /// </summary>
+        private readonly List<Action<T>> _actions = new List<Action<T>>();
+
+        /// <summary>
+        /// Registers the action.
+        /// </summary>
+        /// <param name="action">The action.</param>
+        public void RegisterAction(Action<T> action)
+        {
+            _actions.Add(action);
+
+            ProgressChanged -= ActionableProgress_ProgressChanged;
+            ProgressChanged += ActionableProgress_ProgressChanged;
+        }
+
+        /// <summary>
+        /// Actionables the progress_ progress changed.
+        /// </summary>
+        /// <param name="sender">The sender.</param>
+        /// <param name="e">The e.</param>
+        void ActionableProgress_ProgressChanged(object sender, T e)
+        {
+            foreach (var action in _actions)
+            {
+                action(e);
+            }
+        }
+
+        /// <summary>
+        /// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+        /// </summary>
+        public void Dispose()
+        {
+            Dispose(true);
+        }
+
+        /// <summary>
+        /// Releases unmanaged and - optionally - managed resources.
+        /// </summary>
+        /// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                ProgressChanged -= ActionableProgress_ProgressChanged;
+                _actions.Clear();
+            }
+        }
+    }
+}