[gnome-music/wip/jfelder/do-not-show-empty-view-at-startup] window: Wait before checking songs availability on launch

[Jean Felder <jfelder src gnome org>]

commit 9178112d9deba64700890f538f0d4ecf7c54ac76
Author: Jean Felder <jfelder src gnome org>
Date:   Fri Nov 13 21:33:25 2020 +0100

    window: Wait before checking songs availability on launch
    
    A 'songs-available' checks happens on launch to check that the music
    library is not empty. If no music is available, an empty view is
    displayed. This relies on Tracker being already loaded. However, if
    Tracker is not yet available, the EmptyView is shown for a very short
    time and then the AlbumsView is displayed once Tracker becomes
    available.
    
    This issue is fixed by adding a timeout to ensure that Tracker is
    loaded before checking songs availability.
    
    Related: #423

 gnomemusic/window.py | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)
---
diff --git a/gnomemusic/window.py b/gnomemusic/window.py
index 60b9f59eb..d1b5f8243 100644
--- a/gnomemusic/window.py
+++ b/gnomemusic/window.py
@@ -93,6 +93,7 @@ class Window(Gtk.ApplicationWindow):
         self._player = app.props.player
         self._search = app.props.search
 
+        self._startup_timeout_id: int = 0
         self._setup_view()
 
         MediaKeys(self._player, self)
@@ -174,10 +175,8 @@ class Window(Gtk.ApplicationWindow):
         self._app.props.coregrilo.connect(
             "notify::tracker-available", self._on_tracker_available)
 
-        if self._app.props.coremodel.props.songs_available:
-            self._switch_to_player_view()
-        else:
-            self._switch_to_empty_view()
+        self._startup_timeout_id = GLib.timeout_add(
+            2000, self._on_songs_available, None, None)
 
     def _switch_to_empty_view(self):
         did_initial_state = self._settings.get_boolean('did-initial-state')
@@ -204,6 +203,10 @@ class Window(Gtk.ApplicationWindow):
             self._headerbar_stack.props.visible_child_name = "main"
 
     def _on_songs_available(self, klass, value):
+        if self._startup_timeout_id > 0:
+            GLib.source_remove(self._startup_timeout_id)
+            self._startup_timeout_id = 0
+
         if self._app.props.coremodel.props.songs_available:
             self._switch_to_player_view()
         else: