[pitivi] Viewer: Reset the pipeline before setting a new Pipeline/Action.

[Edward Hervey <edwardrv src gnome org>]

commit 76b80148e6600883040071f978cfeef62675188f
Author: Edward Hervey <bilboed bilboed com>
Date:   Tue May 12 19:42:01 2009 +0200

    Viewer: Reset the pipeline before setting a new Pipeline/Action.
    
    If we don't do this... the pipelines still carry on existing for some
    weird reason. Don't have time to further investigate this, but we
    should have a deeper look after the release.
---
 pitivi/ui/mainwindow.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/pitivi/ui/mainwindow.py b/pitivi/ui/mainwindow.py
index b8003f2..baa7216 100644
--- a/pitivi/ui/mainwindow.py
+++ b/pitivi/ui/mainwindow.py
@@ -879,6 +879,7 @@ class PitiviMainWindow(gtk.Window, Loggable):
         pipeline = Pipeline()
         action = ViewAction()
         action.addProducers(factory)
+        self.viewer.setPipeline(None)
         # FIXME: why do I have to call viewer.setAction ?
         self.viewer.setAction(action)
         self.viewer.setPipeline(pipeline)
@@ -887,6 +888,7 @@ class PitiviMainWindow(gtk.Window, Loggable):
     def _timelineRulerSeekCb(self, ruler, position):
         self.debug("position:%s", gst.TIME_ARGS (position))
         if self.viewer.action != self.project.view_action:
+            self.viewer.setPipeline(None)
             self.viewer.setAction(self.project.view_action)
             self.viewer.setPipeline(self.project.pipeline)
             # get the pipeline settings and set the DAR of the viewer