[gnome-music/wip/jfelder/smartplaylists-ui-v2: 10/12] playlistsview: Hide the sidebar if there is no user playlist

[Jean Felder <jfelder src gnome org>]

commit bbbdfea9ea502c3fe926fefdcb2c670dfae24d30
Author: Jean Felder <jfelder src gnome org>
Date:   Mon Jan 20 16:58:37 2020 +0100

    playlistsview: Hide the sidebar if there is no user playlist

 data/ui/PlaylistsView.ui          | 4 ++--
 gnomemusic/views/playlistsview.py | 4 ++++
 2 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/data/ui/PlaylistsView.ui b/data/ui/PlaylistsView.ui
index 58294101..1eb89877 100644
--- a/data/ui/PlaylistsView.ui
+++ b/data/ui/PlaylistsView.ui
@@ -7,8 +7,8 @@
       <object class="GtkBox" id="_main_container">
         <property name="visible">True</property>
         <child>
-          <object class="GtkScrolledWindow" id="all_playlists">
-            <property name="visible">True</property>
+          <object class="GtkScrolledWindow" id="_all_playlists_sidebar">
+            <property name="visible">False</property>
             <property name="width-request">220</property>
             <style>
               <class name="sidebar"/>
diff --git a/gnomemusic/views/playlistsview.py b/gnomemusic/views/playlistsview.py
index 0b4d9459..f3c1d345 100644
--- a/gnomemusic/views/playlistsview.py
+++ b/gnomemusic/views/playlistsview.py
@@ -39,6 +39,7 @@ class PlaylistsView(Gtk.Stack):
 
     __gtype_name__ = "PlaylistsView"
 
+    _all_playlists_sidebar = Gtk.Template.Child()
     _main_container = Gtk.Template.Child()
     _smart_sidebar = Gtk.Template.Child()
     _user_sidebar = Gtk.Template.Child()
@@ -93,6 +94,8 @@ class PlaylistsView(Gtk.Stack):
         self._coremodel.disconnect(self._loaded_id)
         self._users_playlists_model.connect(
             "items-changed", self._on_user_playlists_model_changed)
+        self._on_user_playlists_model_changed(
+            self._users_playlists_model, 0, 0, 0)
 
         smart_row = self._smart_sidebar.get_row_at_index(0)
         self._smart_sidebar.select_row(smart_row)
@@ -100,6 +103,7 @@ class PlaylistsView(Gtk.Stack):
 
     def _on_user_playlists_model_changed(
             self, model, position, removed, added):
+        self._all_playlists_sidebar.props.visible = (model.get_n_items() > 0)
         if removed == 0:
             return