1 files changed, 55 insertions, 0 deletions

diff --git a/src/WixToolset.Extensibility/BinderExtensionBase.cs b/src/WixToolset.Extensibility/BinderExtensionBase.cs
new file mode 100644
index 00000000..a0b34a31
--- /dev/null
+++ b/src/WixToolset.Extensibility/BinderExtensionBase.cs
@@ -0,0 +1,55 @@
+// 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.Extensibility
+{
+    using WixToolset.Data;
+    using WixToolset.Data.Bind;
+    using WixToolset.Extensibility.Services;
+
+    public abstract class BinderExtensionBase : IBinderExtension
+    {
+        protected IBindContext Context { get; private set; }
+
+        /// <summary>
+        /// Called before binding occurs.
+        /// </summary>
+        public virtual void PreBind(IBindContext context)
+        {
+            this.Context = context;
+        }
+
+        /// <summary>
+        /// Called after variable resolution occurs.
+        /// </summary>
+        public virtual void AfterResolvedFields(Output output)
+        {
+        }
+
+        public virtual string ResolveFile(string source, string type, SourceLineNumber sourceLineNumbers, BindStage bindStage)
+        {
+            return null;
+        }
+
+        public virtual bool? CompareFiles(string targetFile, string updatedFile)
+        {
+            return null;
+        }
+
+        public virtual bool CopyFile(string source, string destination, bool overwrite)
+        {
+            return false;
+        }
+
+        public virtual bool MoveFile(string source, string destination, bool overwrite)
+        {
+            return false;
+        }
+
+        /// <summary>
+        /// Called after binding is complete before the files are moved to their final locations.
+        /// </summary>
+        public virtual void PostBind(BindResult result)
+        {
+        }
+    }
+}