[gnome-music/wip/mschraal/playlists-player-sync: 3/3] coremodel: Listen to changes on playlists

[Marinus Schraal <mschraal src gnome org>]

commit bab56d6b5ce9808a98672c82e36a4398cde05688
Author: Marinus Schraal <mschraal gnome org>
Date:   Tue Sep 3 01:36:17 2019 +0200

    coremodel: Listen to changes on playlists
    
    Playlists were mistakenly not handling live actions to the playlist and
    passing them on to the PlayerPlaylist model.
    
    Have the PlayerPlaylist model react to active playlist model changes as
    well.

 gnomemusic/coremodel.py | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/gnomemusic/coremodel.py b/gnomemusic/coremodel.py
index 80d8f25d..0df16163 100644
--- a/gnomemusic/coremodel.py
+++ b/gnomemusic/coremodel.py
@@ -79,6 +79,7 @@ class CoreModel(GObject.GObject):
         super().__init__()
 
         self._flatten_model = None
+        self._playlist_signal_id = None
         self._previous_playlist_model = None
         self._search_signal_id = None
         self._song_signal_id = None
@@ -326,6 +327,10 @@ class CoreModel(GObject.GObject):
 
                 self.emit("playlist-loaded")
             elif playlist_type == PlayerPlaylist.Type.PLAYLIST:
+                if self._playlist_signal_id:
+                    self._previous_playlist_model.disconnect(
+                        self._playlist_signal_id)
+
                 for model_song in model:
                     song = CoreSong(
                         model_song.props.media, self._coreselection,
@@ -341,6 +346,9 @@ class CoreModel(GObject.GObject):
                         GObject.BindingFlags.BIDIRECTIONAL
                         | GObject.BindingFlags.SYNC_CREATE)
 
+                self._playlist_signal_id = model.connect(
+                    "items-changed", _on_items_changed)
+
                 self.emit("playlist-loaded")
 
         self._previous_playlist_model = model