[pitivi/ges] mainwindow: Activate/deactivate pipeline positition listen when needed

[Thibault Saunier <tsaunier src gnome org>]

commit a4e7df100d9731b8a5192d1a939ce4b16dc46cee
Author: Thibault Saunier <thibault saunier collabora com>
Date:   Tue May 1 23:50:57 2012 -0400

    mainwindow: Activate/deactivate pipeline positition listen when needed
    
    When a project is loaded/closed, the position listener on the pipeline should
    be activated/deacitvated

 pitivi/mainwindow.py |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/pitivi/mainwindow.py b/pitivi/mainwindow.py
index a10b1e0..9213e0f 100644
--- a/pitivi/mainwindow.py
+++ b/pitivi/mainwindow.py
@@ -724,6 +724,7 @@ class PitiviMainWindow(gtk.Window, Loggable):
         self._connectToProjectSources(self.app.current.medialibrary)
         self.app.current.timeline.connect("notify::duration",
                 self._timelineDurationChangedCb)
+        self.app.current.pipeline.activatePositionListener()
 
         # This should only be done when loading a project, and disconnected
         # as soon as we receive the signal.
@@ -876,8 +877,11 @@ class PitiviMainWindow(gtk.Window, Loggable):
 
         return res
 
-    def _projectManagerProjectClosedCb(self, projectManager, unused_project):
+    def _projectManagerProjectClosedCb(self, projectManager, project):
         # we must disconnect from the project pipeline before it is released
+        if project.pipeline is not None:
+            project.pipeline.deactivatePositionListener()
+
         self.timeline_ui.timeline = None
         self.clipconfig.timeline = None
         return False