[gnome-music/wip/jfelder/coredisc-updates: 7/12] corealbum: Add a model_loaded property

[Jean Felder <jfelder src gnome org>]

commit a840b691b4bede82ced526f52f3e5aa308b7c1d5
Author: Jean Felder <jfelder src gnome org>
Date:   Fri Feb 21 16:18:45 2020 +0100

    corealbum: Add a model_loaded property

 gnomemusic/corealbum.py | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
---
diff --git a/gnomemusic/corealbum.py b/gnomemusic/corealbum.py
index 4ab1569cc..86d49fd27 100644
--- a/gnomemusic/corealbum.py
+++ b/gnomemusic/corealbum.py
@@ -85,10 +85,20 @@ class CoreAlbum(GObject.GObject):
 
         return disc_model_sort
 
+    @GObject.Property(
+        type=bool, default=False, flags=GObject.ParamFlags.READABLE)
+    def model_loaded(self) -> bool:
+        """Check if the model has already been loaded
+
+        :returns: True if the model is loaded
+        :rtype: bool
+        """
+        return self._model is not None
+
     @GObject.Property(
         type=Gio.ListModel, default=None, flags=GObject.ParamFlags.READABLE)
     def model(self):
-        if self._model is None:
+        if not self.props.model_loaded:
             self._model = self._get_album_model()
             self._model.connect("items-changed", self._on_list_items_changed)
             self._model.items_changed(0, 0, self._model.get_n_items())