More source updates.

NTwain/IDataSource.cs

@@ -1,4 +1,6 @@
-using System;
+using NTwain.Data;
+using System;
+using System.Collections.Generic;
 namespace NTwain
 {
     /// <summary>
@@ -13,5 +15,86 @@ namespace NTwain
         /// The name.
         /// </value>
         string Name { get; }
+
+        /// <summary>
+        /// Gets the supported data group.
+        /// </summary>
+        /// <value>
+        /// The data group.
+        /// </value>
+        DataGroups DataGroup { get; }
+
+        /// <summary>
+        /// Gets the source's manufacturer name.
+        /// </summary>
+        /// <value>
+        /// The manufacturer.
+        /// </value>
+        string Manufacturer { get; }
+
+        /// <summary>
+        /// Gets the source's product family.
+        /// </summary>
+        /// <value>
+        /// The product family.
+        /// </value>
+        string ProductFamily { get; }
+
+        /// <summary>
+        /// Gets the supported TWAIN protocol version.
+        /// </summary>
+        /// <value>
+        /// The protocol version.
+        /// </value>
+        Version ProtocolVersion { get; }
+
+        /// <summary>
+        /// Gets the supported caps for this source.
+        /// </summary>
+        /// <value>
+        /// The supported caps.
+        /// </value>
+        IList<CapabilityId> SupportedCaps { get; }
+
+        /// <summary>
+        /// Gets the source's version information.
+        /// </summary>
+        /// <value>
+        /// The version.
+        /// </value>
+        TWVersion Version { get; }
+
+        /// <summary>
+        /// Opens the source for capability negotiation.
+        /// </summary>
+        /// <returns></returns>
+        ReturnCode Open();
+
+        /// <summary>
+        /// Closes the source.
+        /// </summary>
+        /// <returns></returns>
+        ReturnCode Close();
+
+        /// <summary>
+        /// Enables the source to start transferring.
+        /// </summary>
+        /// <param name="mode">The mode.</param>
+        /// <param name="modal">if set to <c>true</c> any driver UI will display as modal.</param>
+        /// <param name="windowHandle">The window handle if modal.</param>
+        /// <returns></returns>
+        ReturnCode Enable(SourceEnableMode mode, bool modal, IntPtr windowHandle);
+
+        /// <summary>
+        /// Gets the source status. Only call this at state 4 or higher.
+        /// </summary>
+        /// <returns></returns>
+        TWStatus GetStatus();
+
+        /// <summary>
+        /// Gets the source status. Only call this at state 4 or higher.
+        /// </summary>
+        /// <returns></returns>
+        TWStatusUtf8 GetStatusUtf8();
     }
 }