2 files changed, 121 insertions, 0 deletions
diff --git a/win/CS/HandBrake.ApplicationServices/Utilities/ExtensionMethods.cs b/win/CS/HandBrake.ApplicationServices/Utilities/ExtensionMethods.cs
new file mode 100644
index 000000000..53db9e23f
--- /dev/null
+++ b/win/CS/HandBrake.ApplicationServices/Utilities/ExtensionMethods.cs
@@ -0,0 +1,35 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace HandBrake.ApplicationServices.Utilities
+{
+    using System.Linq.Expressions;
+    using System.Reflection;
+
+    public static class ExtensionMethods
+    {
+        /// <summary>
+        /// Converts an expression into a <see cref="MemberInfo"/>.
+        /// </summary>
+        /// <param name="expression">The expression to convert.</param>
+        /// <returns>The member info.</returns>
+        public static MemberInfo GetMemberInfo(this Expression expression)
+        {
+            var lambda = (LambdaExpression)expression;
+
+            MemberExpression memberExpression;
+            if (lambda.Body is UnaryExpression)
+            {
+                var unaryExpression = (UnaryExpression)lambda.Body;
+                memberExpression = (MemberExpression)unaryExpression.Operand;
+            }
+            else
+                memberExpression = (MemberExpression)lambda.Body;
+
+            return memberExpression.Member;
+        }
+
+    }
+}
diff --git a/win/CS/HandBrake.ApplicationServices/Utilities/PropertyChangedBase.cs b/win/CS/HandBrake.ApplicationServices/Utilities/PropertyChangedBase.cs
new file mode 100644
index 000000000..9809def57
--- /dev/null
+++ b/win/CS/HandBrake.ApplicationServices/Utilities/PropertyChangedBase.cs
@@ -0,0 +1,86 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright file="PropertyChangedBase.cs" company="HandBrake Project (http://handbrake.fr)">
+//   This file is part of the HandBrake source code - It may be used under the terms of the GNU General Public License.
+// </copyright>
+// <summary>
+//   A base class that implements the infrastructure for property change notification and automatically performs UI thread marshalling.
+//   This class is a modified version of the caliburn micro 
+// </summary>
+// --------------------------------------------------------------------------------------------------------------------
+
+namespace HandBrake.ApplicationServices.Utilities
+{
+    using System;
+    using System.ComponentModel;
+    using System.Linq.Expressions;
+    using System.Runtime.Serialization;
+
+    /// <summary>
+    /// Property Changed Base implimentation.
+    /// </summary>
+    [DataContract]
+    public class PropertyChangedBase : INotifyPropertyChanged
+    {
+        /// <summary>
+        /// Creates an instance of <see cref = "PropertyChangedBase" />.
+        /// </summary>
+        public PropertyChangedBase()
+        {
+            IsNotifying = true;
+        }
+
+        /// <summary>
+        /// Occurs when a property value changes.
+        /// </summary>
+        public event PropertyChangedEventHandler PropertyChanged = delegate { };
+
+        /// <summary>
+        /// Enables/Disables property change notification.
+        /// </summary>
+        public bool IsNotifying { get; set; }
+
+        /// <summary>
+        /// Raises a change notification indicating that all bindings should be refreshed.
+        /// </summary>
+        public virtual void Refresh()
+        {
+            NotifyOfPropertyChange(string.Empty);
+        }
+
+        /// <summary>
+        /// Notifies subscribers of the property change.
+        /// </summary>
+        /// <param name = "propertyName">Name of the property.</param>
+        public virtual void NotifyOfPropertyChange(string propertyName = null)
+        {
+            if (IsNotifying)
+            {
+                OnPropertyChanged(new PropertyChangedEventArgs(propertyName));
+            }
+        }
+
+        /// <summary>
+        /// Notifies subscribers of the property change.
+        /// </summary>
+        /// <typeparam name = "TProperty">The type of the property.</typeparam>
+        /// <param name = "property">The property expression.</param>
+        public void NotifyOfPropertyChange<TProperty>(Expression<Func<TProperty>> property)
+        {
+            NotifyOfPropertyChange(property.GetMemberInfo().Name);
+        }
+
+        /// <summary>
+        /// Raises the <see cref="PropertyChanged" /> event directly.
+        /// </summary>
+        /// <param name="e">The <see cref="PropertyChangedEventArgs"/> instance containing the event data.</param>
+        [EditorBrowsable(EditorBrowsableState.Never)]
+        protected void OnPropertyChanged(PropertyChangedEventArgs e)
+        {
+            var handler = PropertyChanged;
+            if (handler != null)
+            {
+                handler(this, e);
+            }
+        }
+    }
+}