[gnome-music/wip/mschraal/player-factor-out-gstreamer: 40/42] seconds_period -> _seconds_period

[Marinus Schraal <mschraal src gnome org>]

commit 8578c28c4c96fabeb1e5351535d491a313f818c7
Author: Marinus Schraal <mschraal gnome org>
Date:   Fri Feb 9 19:50:05 2018 +0100

    seconds_period -> _seconds_period

 gnomemusic/player.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/gnomemusic/player.py b/gnomemusic/player.py
index e68b195..bebbf4c 100644
--- a/gnomemusic/player.py
+++ b/gnomemusic/player.py
@@ -125,6 +125,8 @@ class Player(GObject.GObject):
         self._player.connect('eos', self._on_eos)
         self._player.connect('notify::state', self._on_state_change)
 
+        self._seconds_period = 0
+
         self._lastfm = LastFmScrobbler()
 
     def discover_item(self, item, callback, data=None):
@@ -725,9 +727,9 @@ class Player(GObject.GObject):
 
         # Update self._seconds_timeout.
         if not self._seconds_timeout:
-            self.seconds_period = 1000
+            self._seconds_period = 1000
             self._seconds_timeout = GLib.timeout_add(
-                self.seconds_period, self._update_seconds_callback)
+                self._seconds_period, self._update_seconds_callback)
 
     def _remove_timeout(self):
         if self.timeout:
@@ -776,7 +778,7 @@ class Player(GObject.GObject):
 
         position = self._player.position
         if position > 0:
-            self.played_seconds += self.seconds_period / 1000
+            self.played_seconds += self._seconds_period / 1000
             try:
                 percentage = self.played_seconds / self.duration
                 if (not self._lastfm.scrobbled