[gnome-music/wip/jfelder/corealbum-url] corealbum: Add an url property

[Jean Felder <jfelder src gnome org>]

commit c77bc2c80034250a29131112eec3598e274d08e7
Author: Jean Felder <jfelder src gnome org>
Date:   Sat Aug 31 14:05:37 2019 +0300

    corealbum: Add an url property
    
    The url GObject is mandatory to be able to get the embedded art from a
    file of an album.
    
    Closes: #307

 gnomemusic/corealbum.py                       | 2 ++
 gnomemusic/grilowrappers/grltrackerwrapper.py | 2 ++
 2 files changed, 4 insertions(+)
---
diff --git a/gnomemusic/corealbum.py b/gnomemusic/corealbum.py
index f1834915..30455742 100644
--- a/gnomemusic/corealbum.py
+++ b/gnomemusic/corealbum.py
@@ -38,6 +38,7 @@ class CoreAlbum(GObject.GObject):
     duration = GObject.Property(type=int, default=0)
     media = GObject.Property(type=Grl.Media)
     title = GObject.Property(type=str)
+    url = GObject.Property(type=str)
     year = GObject.Property(type=str, default="----")
 
     def __repr__(self):
@@ -65,6 +66,7 @@ class CoreAlbum(GObject.GObject):
         self.props.artist = utils.get_artist_name(media)
         self.props.composer = media.get_composer()
         self.props.title = utils.get_media_title(media)
+        self.props.url = media.get_url()
         self.props.year = utils.get_media_year(media)
 
     @GObject.Property(
diff --git a/gnomemusic/grilowrappers/grltrackerwrapper.py b/gnomemusic/grilowrappers/grltrackerwrapper.py
index 97953c81..a4d25dfb 100644
--- a/gnomemusic/grilowrappers/grltrackerwrapper.py
+++ b/gnomemusic/grilowrappers/grltrackerwrapper.py
@@ -180,6 +180,7 @@ class GrlTrackerWrapper(GObject.GObject):
             ?composer AS ?composer
             ?album_artist AS ?album_artist
             nmm:artistName(?performer) AS ?artist
+            nie:url(?song) AS ?url
             YEAR(MAX(nie:contentCreated(?song))) AS ?creation_date
         WHERE {
             ?album a nmm:MusicAlbum .
@@ -416,6 +417,7 @@ class GrlTrackerWrapper(GObject.GObject):
             ?composer AS ?composer
             ?album_artist AS ?album_artist
             nmm:artistName(?performer) AS ?artist
+            nie:url(?song) AS ?url
             YEAR(MAX(nie:contentCreated(?song))) AS ?creation_date
         WHERE
         {