[gnome-music/wip/gbsneto/contained-playlists: 22/35] playlists, playlistview: Fix removing and updating a playlist

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

commit afc7ec76724da446b9923573b2515bf3137f5b5c
Author: Georges Basile Stavracas Neto <georges stavracas gmail com>
Date:   Tue Nov 29 13:35:33 2016 +0100

    playlists, playlistview: Fix removing and updating a playlist
    
    This commit finishes porting the signals' parameter to be of
    Playlist class, and adapt the code to work around that.

 gnomemusic/playlists.py          |   16 ++++++++++------
 gnomemusic/views/playlistview.py |    7 ++++---
 gnomemusic/window.py             |    2 +-
 3 files changed, 15 insertions(+), 10 deletions(-)
---
diff --git a/gnomemusic/playlists.py b/gnomemusic/playlists.py
index aae60cd..5be6ab1 100644
--- a/gnomemusic/playlists.py
+++ b/gnomemusic/playlists.py
@@ -162,8 +162,8 @@ class StaticPlaylists:
 class Playlists(GObject.GObject):
     __gsignals__ = {
         'playlist-added': (GObject.SignalFlags.RUN_FIRST, None, (Playlist,)),
-        'playlist-deleted': (GObject.SignalFlags.RUN_FIRST, None, (Grl.Media,)),
-        'playlist-updated': (GObject.SignalFlags.RUN_FIRST, None, (int,)),
+        'playlist-deleted': (GObject.SignalFlags.RUN_FIRST, None, (Playlist,)),
+        'playlist-updated': (GObject.SignalFlags.RUN_FIRST, None, (Playlist,)),
         'song-added-to-playlist': (
             GObject.SignalFlags.RUN_FIRST, None, (Grl.Media, Grl.Media)
         ),
@@ -426,13 +426,17 @@ class Playlists(GObject.GObject):
         )
 
     @log
-    def delete_playlist(self, item):
+    def delete_playlist(self, playlist):
         def update_callback(conn, res, data):
-            conn.update_finish(res)
-            self.emit('playlist-deleted', item)
+            try:
+                conn.update_finish(res)
+                self.emit('playlist-deleted', self.playlists[playlist.id])
+                del self.playlists[playlist.id]
+            except GLib.Error as error:
+                logger.warn("Error: %s, %s", error.__class__, error)
 
         self.tracker.update_async(
-            Query.delete_playlist(item.get_id()), GLib.PRIORITY_LOW,
+            Query.delete_playlist(playlist.id), GLib.PRIORITY_LOW,
             None, update_callback, None
         )
 
diff --git a/gnomemusic/views/playlistview.py b/gnomemusic/views/playlistview.py
index 4bddf91..1d6677f 100644
--- a/gnomemusic/views/playlistview.py
+++ b/gnomemusic/views/playlistview.py
@@ -292,11 +292,12 @@ class PlaylistView(BaseView):
             self.player.set_playing(True)
 
     @log
-    def on_playlist_update(self, widget, playlist_id):
+    def on_playlist_update(self, widget, playlist):
         _iter = self.playlists_model.get_iter_first()
         while _iter:
-            playlist = self.playlists_model.get_value(_iter, 5)
-            if str(playlist_id) == playlist.id and self.current_playlist == playlist:
+            current_playlist = self.playlists_model.get_value(_iter, 5)
+            if playlist == current_playlist and \
+                                      self.current_playlist == current_playlist:
                 path = self.playlists_model.get_path(_iter)
                 GLib.idle_add(self._on_playlist_activated, None, None, path)
                 break
diff --git a/gnomemusic/window.py b/gnomemusic/window.py
index f155f4f..da3d533 100644
--- a/gnomemusic/window.py
+++ b/gnomemusic/window.py
@@ -341,7 +341,7 @@ class Window(Gtk.ApplicationWindow):
 
         undo_button = Gtk.Button.new_with_mnemonic(_("_Undo"))
         label = _("Playlist %s removed" % (
-            self.views[3].current_playlist.get_title()))
+            self.views[3].current_playlist.title))
         grid.add(Gtk.Label.new(label))
         grid.add(undo_button)