[pitivi] Fixe multiple addInputStream/addOutputStream in EffectFactory

[Edward Hervey <edwardrv src gnome org>]

commit 676cf203d1b1ba92e8e9cb4c3db7f8f6d7330021
Author: Thibault Saunier <tsaunier src gnome org>
Date:   Tue Jun 1 15:23:48 2010 -0300

    Fixe multiple addInputStream/addOutputStream in EffectFactory

 pitivi/factories/operation.py |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/factories/operation.py b/pitivi/factories/operation.py
index 55acc0e..08fc75f 100644
--- a/pitivi/factories/operation.py
+++ b/pitivi/factories/operation.py
@@ -65,6 +65,12 @@ class EffectFactory (TransformFactory):
     def _makeBin (self, *args):
         return gst.element_factory_make(self._effect)
 
+    def addInputStream(self, stream):
+        return OperationFactory.addInputStream(self, stream)
+
+    def addOutputStream(self, stream):
+        return OperationFactory.addOutputStream(self, stream)
+
 class StreamModifierFactory(TransformFactory):
     """
     Factories that modify the nature/type of a stream.