[pitivi] titleeditor: Never try to work with interpollated properties

[Alexandru Băluț <alexbalut src gnome org>]

commit 95be4a1fb14e2208ac11765c07e3e9978e98215b
Author: Thibault Saunier <tsaunier gnome org>
Date:   Tue Feb 9 15:22:46 2016 +0100

    titleeditor: Never try to work with interpollated properties
    
    Currently the `alpha` property can be interpollated and we do not
    want to mess with it (as we were currently flush seeking each
    time it was changing, leading to an infinite loop) and failures.
    
    Differential Revision: https://phabricator.freedesktop.org/D750

 pitivi/titleeditor.py |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)
---
diff --git a/pitivi/titleeditor.py b/pitivi/titleeditor.py
index 34b9eea..9d941bc 100644
--- a/pitivi/titleeditor.py
+++ b/pitivi/titleeditor.py
@@ -229,7 +229,13 @@ class TitleEditor(Loggable):
 
     def _propertyChangedCb(self, source, unused_gstelement, pspec):
         if self._setting_props:
-            self._project.pipeline.flushSeek()
+            self._project.pipeline.commit_timeline()
+            return
+
+        control_binding = self.source.get_control_binding(pspec.name)
+        if control_binding:
+            self.debug("Not handling %s as it is being interpollated",
+                       pspec.name)
             return
 
         value = self.source.get_child_property(pspec.name)[1]
@@ -263,7 +269,7 @@ class TitleEditor(Loggable):
                 return
             self.background_color_button.set_rgba(color)
 
-        self._project.pipeline.flushSeek()
+        self._project.pipeline.commit_timeline()
 
     def _newProjectLoadedCb(self, app, project, unused_fully_loaded):
         if self._selection is not None: