Keep Playlist._loaded up to date on Curve.unload() calls.

[hooke.git] / hooke / playlist.py

diff --git a/hooke/playlist.py b/hooke/playlist.py
index 63d1843273f31fe6ec43034fea65a5a70c5e7324..69442da74fa63033980b942431ca04a3a8b84ae5 100644 (file)
--- a/hooke/playlist.py
+++ b/hooke/playlist.py
@@ -160,14 +160,13 @@ class Playlist (NoteIndexList):
     def __init__(self, drivers, name=None):
         super(Playlist, self).__init__(name=name)
         self.drivers = drivers
-        self._max_loaded = 100 # curves to hold in memory simultaneously.
 
     def _set_default_attrs(self):
         super(Playlist, self)._set_default_attrs()
         self._default_attrs['drivers'] = []
         # List of loaded curves, see :meth:`._setup_item`.
         self._default_attrs['_loaded'] = []
-        self._default_attrs['_max_loaded'] = 100
+        self._default_attrs['_max_loaded'] = 100  # curves to hold in memory simultaneously.
 
     def __setstate__(self, state):
         super(Playlist, self).__setstate__(state)
@@ -201,6 +200,12 @@ class Playlist (NoteIndexList):
                 oldest = self._loaded.pop(0)
                 oldest.unload()
 
+    def unload(self, curve):
+        "Inverse of .`_setup_item`."
+        curve.unload()
+        self._loaded.remove(curve)
+
+
 def playlist_path(path):
     """Normalize playlist path extensions.