[gnome-music/wip/mschraal/restore-loading-notifications-3-34: 1/2] Pass Application object to init

[Marinus Schraal <mschraal src gnome org>]

commit df966709a4567efa567e9fadefb8a262ed757fda
Author: Marinus Schraal <mschraal gnome org>
Date:   Mon Sep 16 16:32:49 2019 +0200

    Pass Application object to init
    
    Simplify a number of init calls by passing around the root Application
    object instead of a several different objects created in Application.

 gnomemusic/application.py                       |  2 +-
 gnomemusic/coregrilo.py                         | 12 +++++++---
 gnomemusic/coremodel.py                         | 10 ++++++---
 gnomemusic/grilowrappers/grltrackerplaylists.py | 30 +++++++++++++++++--------
 gnomemusic/grilowrappers/grltrackerwrapper.py   |  9 ++++----
 5 files changed, 42 insertions(+), 21 deletions(-)
---
diff --git a/gnomemusic/application.py b/gnomemusic/application.py
index dc6e4559..53f6fd4c 100644
--- a/gnomemusic/application.py
+++ b/gnomemusic/application.py
@@ -64,7 +64,7 @@ class Application(Gtk.Application):
         self._window = None
 
         self._coreselection = CoreSelection()
-        self._coremodel = CoreModel(self._coreselection)
+        self._coremodel = CoreModel(self)
 
         self._settings = Gio.Settings.new('org.gnome.Music')
         self._player = Player(self)
diff --git a/gnomemusic/coregrilo.py b/gnomemusic/coregrilo.py
index 47b3151e..52c62003 100644
--- a/gnomemusic/coregrilo.py
+++ b/gnomemusic/coregrilo.py
@@ -51,11 +51,17 @@ class CoreGrilo(GObject.GObject):
     def __repr__(self):
         return "<CoreGrilo>"
 
-    def __init__(self, coremodel, coreselection):
+    def __init__(self, coremodel, application):
+        """Initiate the CoreGrilo object
+
+        :param CoreModel coremodel: The CoreModel instance to use
+        :param Application application: The Application instance to use
+        """
         super().__init__()
 
+        self._application = application
         self._coremodel = coremodel
-        self._coreselection = coreselection
+        self._coreselection = application.props.coreselection
         self._search_wrappers = {}
         self._thumbnail_sources = []
         self._thumbnail_sources_timeout = None
@@ -122,7 +128,7 @@ class CoreGrilo(GObject.GObject):
                 and source.props.source_id not in self._wrappers.keys()
                 and new_state == TrackerState.AVAILABLE):
             new_wrapper = GrlTrackerWrapper(
-                source, self._coremodel, self._coreselection, self,
+                source, self._coremodel, self._application, self,
                 self._tracker_wrapper)
             self._wrappers[source.props.source_id] = new_wrapper
         # elif source.props.source_id[:10] == "grl-dleyna":
diff --git a/gnomemusic/coremodel.py b/gnomemusic/coremodel.py
index 46b69a0f..d9afb6fb 100644
--- a/gnomemusic/coremodel.py
+++ b/gnomemusic/coremodel.py
@@ -74,7 +74,11 @@ class CoreModel(GObject.GObject):
     grilo = GObject.Property(type=CoreGrilo, default=None)
     songs_available = GObject.Property(type=bool, default=False)
 
-    def __init__(self, coreselection):
+    def __init__(self, application):
+        """Initiate the CoreModel object
+
+        :param Application application: The Application instance to use
+        """
         super().__init__()
 
         self._flatten_model = None
@@ -85,7 +89,7 @@ class CoreModel(GObject.GObject):
         self._model = Gio.ListStore.new(CoreSong)
         self._songliststore = SongListStore(self._model)
 
-        self._coreselection = coreselection
+        self._coreselection = application.props.coreselection
         self._album_model = Gio.ListStore()
         self._album_model_sort = Gfm.SortListModel.new(self._album_model)
         self._album_model_sort.set_sort_func(
@@ -132,7 +136,7 @@ class CoreModel(GObject.GObject):
         self._user_playlists_model_sort.set_sort_func(
             self._wrap_list_store_sort_func(self._playlists_sort))
 
-        self.props.grilo = CoreGrilo(self, self._coreselection)
+        self.props.grilo = CoreGrilo(self, application)
         # FIXME: Not all instances of internal _grilo use have been
         # fixed.
         self._grilo = self.props.grilo
diff --git a/gnomemusic/grilowrappers/grltrackerplaylists.py b/gnomemusic/grilowrappers/grltrackerplaylists.py
index 12db8b4e..fe96ef26 100644
--- a/gnomemusic/grilowrappers/grltrackerplaylists.py
+++ b/gnomemusic/grilowrappers/grltrackerplaylists.py
@@ -59,22 +59,22 @@ class GrlTrackerPlaylists(GObject.GObject):
         return "<GrlTrackerPlaylists>"
 
     def __init__(
-            self, source, coremodel, coreselection, grilo, tracker_wrapper):
+            self, source, coremodel, application, grilo, tracker_wrapper):
         """Initialize GrlTrackerPlaylists.
 
         :param Grl.TrackerSource source: The Tracker source to wrap
         :param CoreModel coremodel: CoreModel instance to use models
                                     from
-        :param CoreSelection coreselection: CoreSelection instance to
-                                            use
+        :param Application application: Application instance
         :param CoreGrilo grilo: The CoreGrilo instance
         :param TrackerWrapper tracker_wrapper: The TrackerWrapper
                                                instance
         """
         super().__init__()
 
+        self._application = application
         self._coremodel = coremodel
-        self._coreselection = coreselection
+        self._coreselection = application.props.coreselection
         self._grilo = grilo
         self._source = source
         self._model = self._coremodel.props.playlists
@@ -94,7 +94,7 @@ class GrlTrackerPlaylists(GObject.GObject):
     def _initial_playlists_fill(self):
         args = {
             "source": self._source,
-            "coreselection": self._coreselection,
+            "application": self._application,
             "grilo": self._grilo,
             "tracker": self._tracker
         }
@@ -147,7 +147,7 @@ class GrlTrackerPlaylists(GObject.GObject):
 
         playlist = Playlist(
             media=media, source=self._source, coremodel=self._coremodel,
-            coreselection=self._coreselection, grilo=self._grilo,
+            application=self._application, grilo=self._grilo,
             tracker=self._tracker)
 
         self._model.append(playlist)
@@ -292,9 +292,21 @@ class Playlist(GObject.GObject):
 
     def __init__(
             self, media=None, query=None, tag_text=None, source=None,
-            coremodel=None, coreselection=None, grilo=None, tracker=None):
-        super().__init__()
+            coremodel=None, application=None, grilo=None, tracker=None):
 
+        super().__init__()
+        """Initialize a playlist
+
+       :param Grl.Media media: A media object
+       :param string query: Tracker query that returns the playlist
+       :param string tag_text: The non translatable unique identifier
+            of the playlist
+       :param Grl.Source source: The Grilo Tracker source object
+       :param CoreModel coremodel: The CoreModel instance
+       :param Application application: The Application instance
+       :param CoreGrilo grilo: The CoreGrilo instance
+       :param TrackerWrapper tracker: The TrackerWrapper instance
+        """
         if media:
             self.props.pl_id = media.get_id()
             self.props.title = utils.get_media_title(media)
@@ -306,7 +318,7 @@ class Playlist(GObject.GObject):
         self._model = None
         self._source = source
         self._coremodel = coremodel
-        self._coreselection = coreselection
+        self._coreselection = application.props.coreselection
         self._grilo = grilo
         self._tracker = tracker
 
diff --git a/gnomemusic/grilowrappers/grltrackerwrapper.py b/gnomemusic/grilowrappers/grltrackerwrapper.py
index d6331938..f5a275dd 100644
--- a/gnomemusic/grilowrappers/grltrackerwrapper.py
+++ b/gnomemusic/grilowrappers/grltrackerwrapper.py
@@ -64,21 +64,20 @@ class GrlTrackerWrapper(GObject.GObject):
         return "<GrlTrackerWrapper>"
 
     def __init__(
-            self, source, coremodel, coreselection, grilo, tracker_wrapper):
+            self, source, coremodel, application, grilo, tracker_wrapper):
         """Initialize the Tracker wrapper
 
         :param Grl.TrackerSource source: The Tracker source to wrap
         :param CoreModel coremodel: CoreModel instance to use models
         from
-        :param CoreSelection coreselection: CoreSelection instance to
-        use
+        :param Application application: Application instance
         :param CoreGrilo grilo: The CoreGrilo instance
         :param TrackerWrapper tracker_wrapper: The TrackerWrapper instance
         """
         super().__init__()
 
         self._coremodel = coremodel
-        self._coreselection = coreselection
+        self._coreselection = application.props.coreselection
         self._grilo = grilo
         self._source = source
         self._model = self._coremodel.props.songs
@@ -106,7 +105,7 @@ class GrlTrackerWrapper(GObject.GObject):
         self._initial_artists_fill(self._source)
 
         self._tracker_playlists = GrlTrackerPlaylists(
-            source, coremodel, coreselection, grilo, tracker_wrapper)
+            source, coremodel, application, grilo, tracker_wrapper)
 
         self._source.notify_change_start()
         self._source.connect("content-changed", self._batch_content_changed)