[recipes] image viewer: Notify on index changes

[Matthias Clasen <matthiasc src gnome org>]

commit baf2a9bc378f032cba6c18c92acb8ed281fa1b56
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jan 28 13:41:36 2017 +0100

    image viewer: Notify on index changes
    
    This was just overlooked so far.

 src/gr-image-viewer.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/gr-image-viewer.c b/src/gr-image-viewer.c
index 9f21337..2de0157 100644
--- a/src/gr-image-viewer.c
+++ b/src/gr-image-viewer.c
@@ -121,6 +121,8 @@ set_current_image (GrImageViewer *viewer)
         child = gtk_flow_box_get_child_at_index (GTK_FLOW_BOX (viewer->preview_list), viewer->index);
         if (child)
                 gtk_flow_box_select_child (GTK_FLOW_BOX (viewer->preview_list), child);
+
+        g_object_notify (G_OBJECT (viewer), "index");
 }
 
 static void