[gnome-music/wip/jfelder/coredisc-updates: 6/7] coreartist: Add annotations

[Jean Felder <jfelder src gnome org>]

commit e6d4b448bff281727a1c0852b85ad63e410f20c9
Author: Jean Felder <jfelder src gnome org>
Date:   Fri Nov 13 12:01:21 2020 +0100

    coreartist: Add annotations

 gnomemusic/coreartist.py | 37 +++++++++++++++++++++----------------
 1 file changed, 21 insertions(+), 16 deletions(-)
---
diff --git a/gnomemusic/coreartist.py b/gnomemusic/coreartist.py
index eacd0f007..55644da77 100644
--- a/gnomemusic/coreartist.py
+++ b/gnomemusic/coreartist.py
@@ -24,7 +24,7 @@
 
 from __future__ import annotations
 
-from typing import Type
+from typing import Optional, Type
 import typing
 
 import gi
@@ -35,7 +35,10 @@ from gnomemusic.artistart import ArtistArt
 from gnomemusic.coresong import CoreSong
 import gnomemusic.utils as utils
 if typing.TYPE_CHECKING:
+    from gnomemusic.application import Application
     from gnomemusic.corealbum import CoreAlbum
+    from gnomemusic.coregrilo import CoreGrilo
+    from gnomemusic.coremodel import CoreModel
 
 
 class CoreArtist(GObject.GObject):
@@ -45,7 +48,7 @@ class CoreArtist(GObject.GObject):
     artist = GObject.Property(type=str)
     media = GObject.Property(type=Grl.Media)
 
-    def __init__(self, application, media):
+    def __init__(self, application: Application, media: Grl.Media) -> None:
         """Initiate the CoreArtist object
 
         :param Application application: The application object
@@ -53,12 +56,12 @@ class CoreArtist(GObject.GObject):
         """
         super().__init__()
 
-        self._application = application
-        self._coregrilo = application.props.coregrilo
-        self._coremodel = application.props.coremodel
-        self._model = None
-        self._selected = False
-        self._thumbnail = None
+        self._application: Application = application
+        self._coregrilo: CoreGrilo = application.props.coregrilo
+        self._coremodel: CoreModel = application.props.coremodel
+        self._model: Optional[Gfm.FlattenListModel] = None
+        self._selected: bool = False
+        self._thumbnail: Optional[str] = None
 
         self._albums_model_proxy: Gio.ListStore = Gio.ListStore.new(
             Gio.ListModel)
@@ -71,7 +74,7 @@ class CoreArtist(GObject.GObject):
 
         self.update(media)
 
-    def update(self, media):
+    def update(self, media: Grl.Media) -> None:
         self.props.media = media
         self.props.artist = utils.get_artist_name(media)
 
@@ -79,7 +82,7 @@ class CoreArtist(GObject.GObject):
     def _album_sort(album_a: CoreAlbum, album_b: CoreAlbum) -> None:
         return album_a.props.year > album_b.props.year
 
-    def _load_artist_album_model(self):
+    def _load_artist_album_model(self) -> None:
         self._model = Gfm.FlattenListModel.new(
             CoreSong, self._albums_model_proxy)
 
@@ -91,7 +94,7 @@ class CoreArtist(GObject.GObject):
             "items-changed", self._on_albums_changed)
 
     @GObject.Property(type=Gfm.FlattenListModel, default=None)
-    def model(self):
+    def model(self) -> Gfm.FlattenListModel:
         """Model which contains all the songs of an artist.
 
         :returns: songs model
@@ -114,7 +117,9 @@ class CoreArtist(GObject.GObject):
 
         return self._albums_model_sort
 
-    def _on_albums_changed(self, model, pos, removed, added):
+    def _on_albums_changed(
+            self, model: Gfm.SortListModel, pos: int, removed: int,
+            added: int) -> None:
         with self.freeze_notify():
             for corealbum in model:
                 corealbum.props.selected = self.props.selected
@@ -126,11 +131,11 @@ class CoreArtist(GObject.GObject):
                         corealbum.props.model)
 
     @GObject.Property(type=bool, default=False)
-    def selected(self):
+    def selected(self) -> bool:
         return self._selected
 
     @selected.setter  # type: ignore
-    def selected(self, value):
+    def selected(self, value: bool) -> None:
         if value == self._selected:
             return
 
@@ -144,7 +149,7 @@ class CoreArtist(GObject.GObject):
         self.props.model.items_changed(0, 0, 0)
 
     @GObject.Property(type=str, default=None)
-    def thumbnail(self):
+    def thumbnail(self) -> str:
         """Artist art thumbnail retrieval
 
         :return: The artist art uri or "generic" or "loading"
@@ -157,7 +162,7 @@ class CoreArtist(GObject.GObject):
         return self._thumbnail
 
     @thumbnail.setter  # type: ignore
-    def thumbnail(self, value):
+    def thumbnail(self, value: str) -> None:
         """Artist art thumbnail setter
 
         :param string value: uri, "generic" or "loading"