1 files changed, 45 insertions, 0 deletions

diff --git a/src/WixToolset.WixBA/RelayCommand.cs b/src/WixToolset.WixBA/RelayCommand.cs
new file mode 100644
index 00000000..ecc482da
--- /dev/null
+++ b/src/WixToolset.WixBA/RelayCommand.cs
@@ -0,0 +1,45 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.UX
+{
+    using System;
+    using System.Diagnostics;
+    using System.Windows.Input;
+
+    /// <summary>
+    /// Base class that implements ICommand interface via delegates.
+    /// </summary>
+    public class RelayCommand : ICommand
+    {
+        private readonly Action<object> execute;
+        private readonly Predicate<object> canExecute;
+
+        public RelayCommand(Action<object> execute)
+            : this(execute, null)
+        {
+        }
+
+        public RelayCommand(Action<object> execute, Predicate<object> canExecute)
+        {
+            this.execute = execute;
+            this.canExecute = canExecute;
+        }
+
+        public event EventHandler CanExecuteChanged
+        {
+            add { CommandManager.RequerySuggested += value; }
+            remove { CommandManager.RequerySuggested -= value; }
+        }
+
+        [DebuggerStepThrough]
+        public bool CanExecute(object parameter)
+        {
+            return this.canExecute == null ? true : this.canExecute(parameter);
+        }
+
+        public void Execute(object parameter)
+        {
+            this.execute(parameter);
+        }
+    }
+}