[gnome-music/wip/mschraal/tageditor-13feb2020: 17/25] coregrilo: Handle a list of keys for writeback

[Marinus Schraal <mschraal src gnome org>]

commit 92a76523d6ed32b98f12ca1d448ae12f4e763ecd
Author: Jean Felder <jfelder src gnome org>
Date:   Sat Nov 23 16:37:53 2019 +0100

    coregrilo: Handle a list of keys for writeback
    
    Several metadata can be updated with a single call.

 gnomemusic/coregrilo.py | 19 ++++++++++++-------
 gnomemusic/coresong.py  |  6 +++---
 2 files changed, 15 insertions(+), 10 deletions(-)
---
diff --git a/gnomemusic/coregrilo.py b/gnomemusic/coregrilo.py
index 83b58d46..75c15527 100644
--- a/gnomemusic/coregrilo.py
+++ b/gnomemusic/coregrilo.py
@@ -180,29 +180,34 @@ class CoreGrilo(GObject.GObject):
         for wrapper in self._wrappers.values():
             wrapper.populate_album_disc_songs(media, discnr, callback)
 
-    def _store_metadata(self, source, media, key):
+    def _store_metadata(self, source, media, keys):
         """Convenience function to store metadata
 
         Wrap the metadata store call in a idle_add compatible form.
-        :param source: A Grilo source object
-        :param media: A Grilo media item
-        :param key: A Grilo metadata key
+        :param Grl.Source source: A Grilo source object
+        :param Grl.Media media: A Grilo media item
+        :param list keys: A list of Grilo metadata keys
         """
         # FIXME: Doing this async crashes.
         try:
             source.store_metadata_sync(
-                media, [key], Grl.WriteFlags.NORMAL)
+                media, keys, Grl.WriteFlags.NORMAL)
         except GLib.Error as error:
             self._log.warning(
                 "Error {}: {}".format(error.domain, error.message))
 
         return GLib.SOURCE_REMOVE
 
-    def writeback(self, media, key):
+    def writeback(self, media, keys):
+        """Store the values associated with the keys.
+
+        :param Grl.Media media: A Grilo media item
+        :param list keys: A list of Grilo metadata keys
+        """
         for wrapper in self._wrappers.values():
             if media.get_source() == wrapper.source.props.source_id:
                 GLib.idle_add(
-                    self._store_metadata, wrapper.props.source, media, key)
+                    self._store_metadata, wrapper.props.source, media, keys)
                 break
 
     def search(self, text):
diff --git a/gnomemusic/coresong.py b/gnomemusic/coresong.py
index f8d5d422..ec8d2371 100644
--- a/gnomemusic/coresong.py
+++ b/gnomemusic/coresong.py
@@ -94,7 +94,7 @@ class CoreSong(GObject.GObject):
             return
 
         self.props.media.set_favourite(self._favorite)
-        self._grilo.writeback(self.props.media, Grl.METADATA_KEY_FAVOURITE)
+        self._grilo.writeback(self.props.media, [Grl.METADATA_KEY_FAVOURITE])
 
     @GObject.Property(type=bool, default=False)
     def selected(self):
@@ -128,14 +128,14 @@ class CoreSong(GObject.GObject):
             return
 
         self.props.media.set_play_count(self.props.play_count + 1)
-        self._grilo.writeback(self.props.media, Grl.METADATA_KEY_PLAY_COUNT)
+        self._grilo.writeback(self.props.media, [Grl.METADATA_KEY_PLAY_COUNT])
 
     def set_last_played(self):
         if not self._is_tracker:
             return
 
         self.props.media.set_last_played(GLib.DateTime.new_now_utc())
-        self._grilo.writeback(self.props.media, Grl.METADATA_KEY_LAST_PLAYED)
+        self._grilo.writeback(self.props.media, [Grl.METADATA_KEY_LAST_PLAYED])
 
     def query_musicbrainz_tags(self, callback):
         """Retrieves metadata keys for this CoreSong