port from perforce

hgplus/bliss/Tweaky/ExecuteAfterAspect.cs

@@ -0,0 +1,58 @@
+using PostSharp.Aspects;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace Tweaky
+{
+    [Serializable]
+    [global::System.AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = false)]
+    public sealed class ExecuteAfterAttribute : OnMethodBoundaryAspect
+    {
+        public ExecuteAfterAttribute(string methodName)
+        {
+            this.methodName = methodName;
+        }
+
+        private string methodName;
+        private Type className;
+        private MethodInfo method;
+
+        public override void RuntimeInitialize(System.Reflection.MethodBase method)
+        {
+            className = method.DeclaringType;
+            try
+            {
+                var methods = className.GetMethods();
+                foreach (var m in methods)
+                {
+                    if (m.Name == methodName)
+                    {
+                        this.method = m;
+                    }
+                }
+            }
+            catch (Exception e)
+            {
+                if (Application.Current != null && Application.Current.MainWindow != null && !DesignerProperties.GetIsInDesignMode(Application.Current.MainWindow))
+                    throw e;
+            }
+        }
+
+        public override void OnExit(MethodExecutionArgs args)
+        {
+            if (args == null)
+                return;
+
+            if (null != method)
+            {
+                method.Invoke(args.Instance, null);
+            }
+        }
+    }  
+}