Import code from old v4 repo

1 files changed, 57 insertions, 0 deletions

diff --git a/src/wixext/UIDecompiler.cs b/src/wixext/UIDecompiler.cs
new file mode 100644
index 00000000..4bdd48fc
--- /dev/null
+++ b/src/wixext/UIDecompiler.cs
@@ -0,0 +1,57 @@
+// 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.Extensions
+{
+    using System;
+    using System.Collections;
+    using System.Diagnostics;
+    using System.Globalization;
+    using WixToolset.Data;
+    using WixToolset.Extensibility;
+    using Wix = WixToolset.Data.Serialize;
+
+    /// <summary>
+    /// The decompiler for the WiX Toolset UI Extension.
+    /// </summary>
+    public sealed class UIDecompiler : DecompilerExtension
+    {
+        private bool removeLibraryRows;
+
+        /// <summary>
+        /// Get the extensions library to be removed.
+        /// </summary>
+        /// <param name="tableDefinitions">Table definitions for library.</param>
+        /// <returns>Library to remove from decompiled output.</returns>
+        public override Library GetLibraryToRemove(TableDefinitionCollection tableDefinitions)
+        {
+            return removeLibraryRows ? UIExtensionData.GetExtensionLibrary(tableDefinitions) : null;
+        }
+
+        /// <summary>
+        /// Called at the beginning of the decompilation of a database.
+        /// </summary>
+        /// <param name="tables">The collection of all tables.</param>
+        public override void Initialize(TableIndexedCollection tables)
+        {
+            Table propertyTable = tables["Property"];
+
+            if (null != propertyTable)
+            {
+                foreach (Row row in propertyTable.Rows)
+                {
+                    if ("WixUI_Mode" == (string)row[0])
+                    {
+                        Wix.UIRef uiRef = new Wix.UIRef();
+
+                        uiRef.Id = String.Concat("WixUI_", (string)row[1]);
+
+                        this.Core.RootElement.AddChild(uiRef);
+                        this.removeLibraryRows = true;
+
+                        break;
+                    }
+                }
+            }
+        }
+    }
+}