1 files changed, 96 insertions, 0 deletions

diff --git a/src/internal/WixBuildTools.XsdGen/CodeDomInterfaces.cs b/src/internal/WixBuildTools.XsdGen/CodeDomInterfaces.cs
new file mode 100644
index 00000000..850839d4
--- /dev/null
+++ b/src/internal/WixBuildTools.XsdGen/CodeDomInterfaces.cs
@@ -0,0 +1,96 @@
+// 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.Serialize
+{
+    using System;
+    using System.Collections;
+    using System.Xml;
+
+    /// <summary>
+    /// Interface for generated schema elements.
+    /// </summary>
+    public interface ISchemaElement
+    {
+        /// <summary>
+        /// Gets and sets the parent of this element. May be null.
+        /// </summary>
+        /// <value>An ISchemaElement that has this element as a child.</value>
+        ISchemaElement ParentElement
+        {
+            get;
+            set;
+        }
+    
+        /// <summary>
+        /// Outputs xml representing this element, including the associated attributes
+        /// and any nested elements.
+        /// </summary>
+        /// <param name="writer">XmlTextWriter to be used when outputting the element.</param>
+        void OutputXml(XmlWriter writer);
+    }
+
+    /// <summary>
+    /// Interface for generated schema elements. Implemented by elements that have child
+    /// elements.
+    /// </summary>
+    public interface IParentElement
+    {
+        /// <summary>
+        /// Gets an enumerable collection of the children of this element.
+        /// </summary>
+        /// <value>An enumerable collection of the children of this element.</value>
+        IEnumerable Children
+        {
+            get;
+        }
+
+        /// <summary>
+        /// Gets an enumerable collection of the children of this element, filtered
+        /// by the passed in type.
+        /// </summary>
+        /// <param name="childType">The type of children to retrieve.</param>
+        IEnumerable this[Type childType]
+        {
+            get;
+        }
+
+        /// <summary>
+        /// Adds a child to this element.
+        /// </summary>
+        /// <param name="child">Child to add.</param>
+        void AddChild(ISchemaElement child);
+
+        /// <summary>
+        /// Removes a child from this element.
+        /// </summary>
+        /// <param name="child">Child to remove.</param>
+        void RemoveChild(ISchemaElement child);
+    }
+
+    /// <summary>
+    /// Interface for generated schema elements. Implemented by classes with attributes.
+    /// </summary>
+    public interface ISetAttributes
+    {
+        /// <summary>
+        /// Sets the attribute with the given name to the given value. The value here is
+        /// a string, and is converted to the strongly-typed version inside this method.
+        /// </summary>
+        /// <param name="name">The name of the attribute to set.</param>
+        /// <param name="value">The value to assign to the attribute.</param>
+        void SetAttribute(string name, string value);
+    }
+
+    /// <summary>
+    /// Interface for generated schema elements. Implemented by classes with children.
+    /// </summary>
+    public interface ICreateChildren
+    {
+        /// <summary>
+        /// Creates an instance of the child with the passed in name.
+        /// </summary>
+        /// <param name="childName">String matching the element name of the child when represented in XML.</param>
+        /// <returns>An instance of that child.</returns>
+        ISchemaElement CreateChild(string childName);
+    }
+}