[gnome-music/wip/jfelder/musicbrainz-tageditordialog: 4/6] utils: Handle more tags

[Jean Felder <jfelder src gnome org>]

commit b7f39acf911bdaf432c708868dce469dfbd2bb48
Author: Jean Felder <jfelder src gnome org>
Date:   Tue Aug 21 00:24:40 2018 +0200

    utils: Handle more tags

 gnomemusic/utils.py | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
---
diff --git a/gnomemusic/utils.py b/gnomemusic/utils.py
index ec171663..c54d1f48 100644
--- a/gnomemusic/utils.py
+++ b/gnomemusic/utils.py
@@ -56,6 +56,19 @@ def get_album_title(item):
     return album
 
 
+def get_album_disc_nr(item):
+    """Returns the album song number associated with the media item
+
+    :param Grl.Media item: song
+    :return: The album title
+    :rtype: string
+    """
+    track_number = item.get_album_disc_number()
+    if track_number == 0:
+        track_number = ""
+    return str(track_number)
+
+
 def get_artist_name(item):
     """Returns the preferred artist for a media item.
 
@@ -75,6 +88,43 @@ def get_artist_name(item):
             or _("Unknown Artist"))
 
 
+def get_composer_name(item):
+    """Returns the composer for a media item.
+
+    :param Grl.Media item: song
+    :return: The artist name
+    :rtype: string
+    """
+
+    return (item.get_composer()
+            or None)
+
+
+def get_media_genre(item):
+    """Returns the title of the media item.
+
+    :param item: A Grilo Media object
+    :return: The title
+    :rtype:
+    """
+
+    return (item.get_genre()
+            or None)
+
+
+def get_media_track_nr(item):
+    """Returns the title of the media item.
+
+    :param item: A Grilo Media object
+    :return: The title
+    :rtype:
+    """
+    track_number = item.get_track_number()
+    if track_number == 0:
+        return ""
+    return str(track_number)
+
+
 def get_media_title(item):
     """Returns the title of the media item.