[gnome-music/wip/jfelder/player-remove-prev-next-invalidated: 3/7] mpris: Use repeat-mode changes to emit CanGo{previous/next}

[Jean Felder <jfelder src gnome org>]

commit 4b9e9fe6e3f6db1a3eca06f343cbfc1c6ba01cb9
Author: Jean Felder <jfelder src gnome org>
Date:   Wed Apr 24 00:18:04 2019 +0200

    mpris: Use repeat-mode changes to emit CanGo{previous/next}
    
    See the previous commit message for the whole explanation. In summary,
    "prev-next-invalidated" and "repeat-mode" changes are redundant.

 gnomemusic/mpris.py | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)
---
diff --git a/gnomemusic/mpris.py b/gnomemusic/mpris.py
index d582208a..38b16dce 100644
--- a/gnomemusic/mpris.py
+++ b/gnomemusic/mpris.py
@@ -225,7 +225,6 @@ class MediaPlayer2Service(Server):
         self.player.connect('notify::state', self._on_player_state_changed)
         self.player.connect('notify::repeat-mode', self._on_repeat_mode_changed)
         self.player.connect('volume-changed', self._on_volume_changed)
-        self.player.connect('prev-next-invalidated', self._on_prev_next_invalidated)
         self.player.connect('seek-finished', self._on_seek_finished)
         self.player.connect(
             'playlist-changed', self._on_player_playlist_changed)
@@ -477,8 +476,12 @@ class MediaPlayer2Service(Server):
     @log
     def _on_repeat_mode_changed(self, player, param):
         self._update_songs_list()
+        has_next = self.player.props.has_next
+        has_previous = self.player.props.has_previous
         self.PropertiesChanged(MediaPlayer2Service.MEDIA_PLAYER2_PLAYER_IFACE,
                                {
+                                   'CanGoNext': GLib.Variant('b', has_next),
+                                   'CanGoPrevious': GLib.Variant('b', has_previous),
                                    'LoopStatus': GLib.Variant('s', self._get_loop_status()),
                                    'Shuffle': GLib.Variant('b', self.player.props.repeat_mode == 
RepeatMode.SHUFFLE),
                                },
@@ -492,15 +495,6 @@ class MediaPlayer2Service(Server):
                                },
                                [])
 
-    @log
-    def _on_prev_next_invalidated(self, player, data=None):
-        self.PropertiesChanged(MediaPlayer2Service.MEDIA_PLAYER2_PLAYER_IFACE,
-                               {
-                                   'CanGoNext': GLib.Variant('b', self.player.props.has_next),
-                                   'CanGoPrevious': GLib.Variant('b', self.player.props.has_previous),
-                               },
-                               [])
-
     @log
     def _on_seek_finished(self, player, position_second):
         self.Seeked(int(position_second * 1e6))