tracklist: update position when track is added

We don't want to repeat tracks if a track was added to a spot
before the current position on the tracklist.

1 files changed, 10 insertions, 2 deletions

diff --git a/lib/dtas/tracklist.rb b/lib/dtas/tracklist.rb
index 325db20..b6f02c3 100644
--- a/lib/dtas/tracklist.rb
+++ b/lib/dtas/tracklist.rb
@@ -91,10 +91,18 @@ class DTAS::Tracklist # :nodoc:
       idx = by_track_id[after_track_id] or
         raise ArgumentError, "after_track_id invalid"
       @list[idx, 1] = [ @list[idx], track ]
-      @pos = idx + 1 if set_as_current
+      if set_as_current
+        @pos = idx + 1
+      else
+        @pos += 1 if @pos >= idx
+      end
     else # nil = first_track
       @list.unshift(track)
-      @pos = 0 if set_as_current
+      if set_as_current
+        @pos = 0
+      else
+        @pos += 1 if @pos >= 0
+      end
     end
     track.object_id
   end