[gnome-music/wip/jfelder/songwidget-listboxrow: 4/10] searchview: Initial static type annotations support

[Jean Felder <jfelder src gnome org>]

commit cb19ac84c1778ac5d63cbdd8d68cae8cbbe065c2
Author: Jean Felder <jfelder src gnome org>
Date:   Sat May 8 17:19:44 2021 +0200

    searchview: Initial static type annotations support

 gnomemusic/views/searchview.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)
---
diff --git a/gnomemusic/views/searchview.py b/gnomemusic/views/searchview.py
index 49dd35830..5d54a3666 100644
--- a/gnomemusic/views/searchview.py
+++ b/gnomemusic/views/searchview.py
@@ -22,8 +22,11 @@
 # code, but you are not obligated to do so.  If you do not wish to do so,
 # delete this exception statement from your version.
 
+from __future__ import annotations
 from enum import IntEnum
 from gettext import gettext as _
+from typing import Optional
+import typing
 
 from gi.repository import Gdk, GObject, Gtk
 
@@ -34,6 +37,8 @@ from gnomemusic.widgets.headerbar import HeaderBar
 from gnomemusic.widgets.artistalbumswidget import ArtistAlbumsWidget
 from gnomemusic.widgets.artistsearchtile import ArtistSearchTile
 from gnomemusic.widgets.songwidget import SongWidget
+if typing.TYPE_CHECKING:
+    from gnomemusic.application import Application
 
 
 @Gtk.Template(resource_path="/org/gnome/Music/ui/SearchView.ui")
@@ -73,7 +78,7 @@ class SearchView(Gtk.Stack):
     _view_all_albums = Gtk.Template.Child()
     _view_all_artists = Gtk.Template.Child()
 
-    def __init__(self, application):
+    def __init__(self, application: Application) -> None:
         """Initialize SearchView
 
         :param GtkApplication application: The Application object
@@ -134,7 +139,7 @@ class SearchView(Gtk.Stack):
 
         self.add(self._album_widget)
 
-        self._scrolled_artist_window = None
+        self._scrolled_artist_window: Optional[Gtk.ScrolledWindow] = None
 
         self._search_mode_active = False