[gnome-music] disclistbox: Simplify code

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 8b28e9777a95860a074351cb208680d06199cced
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Sun Nov 27 11:24:10 2016 +0100

    disclistbox: Simplify code
    
    Instead of using the GtkListBox's specific ::insert(), use
    the add() function from GtkContainer.
    
    This will simplify the transition from GtkListBox to GtkBox
    in the future.

 gnomemusic/widgets/albumwidget.py       |    2 +-
 gnomemusic/widgets/disclistboxwidget.py |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gnomemusic/widgets/albumwidget.py b/gnomemusic/widgets/albumwidget.py
index 1a16543..3003353 100644
--- a/gnomemusic/widgets/albumwidget.py
+++ b/gnomemusic/widgets/albumwidget.py
@@ -285,7 +285,7 @@ class AlbumWidget(Gtk.EventBox):
                 discs[disc_nr].append(track)
         for disc_nr in discs:
             disc = self._create_disc_box(disc_nr, discs[disc_nr])
-            self._disc_listbox.insert(disc, -1)
+            self._disc_listbox.add(disc)
             if len(discs) == 1:
                 disc.show_disc_label(False)
 
diff --git a/gnomemusic/widgets/disclistboxwidget.py b/gnomemusic/widgets/disclistboxwidget.py
index 6c742ae..5a7179c 100644
--- a/gnomemusic/widgets/disclistboxwidget.py
+++ b/gnomemusic/widgets/disclistboxwidget.py
@@ -444,9 +444,9 @@ class DiscListBox(Gtk.ListBox):
         self._selected_items = []
 
     @log
-    def insert(self, widget, position):
+    def add(self, widget):
         """Insert a DiscBox widget"""
-        super().insert(widget, position)
+        super().add(widget)
         widget.connect('selection-changed', self._on_selection_changed)
 
     @log