[f-spot/backend-cleanup: 2/8] Add SetDefaultVersion to IBrowsableItemVersionable

[Mike Gemünde <mgemuende src gnome org>]

commit 750ec1545ecbe445050f3d706580b0db9cdaab08
Author: Mike Gemünde <mike gemuende de>
Date:   Tue Jul 6 14:40:36 2010 +0200

    Add SetDefaultVersion to IBrowsableItemVersionable
    
    This commit starts adding the behavior to IBrowsableItemVersionable
    which is related to an item with different versions where versions
    can be changed.

 src/Core/IBrowsableItemVersionable.cs |   26 ++++++++++++++++++++++++--
 src/Core/Photo.cs                     |   10 ++++++++++
 2 files changed, 34 insertions(+), 2 deletions(-)
---
diff --git a/src/Core/IBrowsableItemVersionable.cs b/src/Core/IBrowsableItemVersionable.cs
index 039763a..03c9cb4 100644
--- a/src/Core/IBrowsableItemVersionable.cs
+++ b/src/Core/IBrowsableItemVersionable.cs
@@ -1,8 +1,30 @@
+/*
+ * IBrowsableItemVersion.cs
+ * 
+ * Author(s):
+ *  Ruben Vermeersch <ruben savanne be>
+ *  Mike Gemuende <mike gemuende de>
+ *
+ * This is free software. See COPYING for details.
+ */
+
 using System.Collections.Generic;
 
 namespace FSpot
 {
-	public interface IBrowsableItemVersionable {
-		IEnumerable<IBrowsableItemVersion> Versions { get; }
+	/// <summary>
+	///    The interface adds functionality which is related to items where
+	///    versions can be added or removed.
+	/// </summary>
+	public interface IBrowsableItemVersionable : IBrowsableItem{
+
+		/// <summary>
+		///    Sets the default version of a the item.
+		/// </summary>
+		/// <param name="version">
+		///    A <see cref="IBrowsableItemVersion"/> which will be the new
+		///    default version.
+		/// </param>
+		void SetDefaultVersion (IBrowsableItemVersion version);
 	}
 }
diff --git a/src/Core/Photo.cs b/src/Core/Photo.cs
index 7c1784b..8352fe9 100644
--- a/src/Core/Photo.cs
+++ b/src/Core/Photo.cs
@@ -213,6 +213,16 @@ namespace FSpot
 			}
 		}
 
+		public void SetDefaultVersion (IBrowsableItemVersion version)
+		{
+			PhotoVersion photo_version = version as PhotoVersion;
+			if (photo_version == null)
+				throw new ArgumentException ("Not a valid version for this photo");
+
+			DefaultVersionId = photo_version.VersionId;
+		}
+
+
 		//FIXME: won't work on non file uris
 		public uint SaveVersion (Gdk.Pixbuf buffer, bool create_version)
 		{