[pitivi] timeline: commit to the action log on drag and drop.

[Mathieu Duponchelle <mathieudu src gnome org>]

commit 98533e4e4a4e09176c87abad51356357990a12ea
Author: Mathieu Duponchelle <mathieu duponchelle opencreed com>
Date:   Wed Dec 17 19:30:40 2014 +0100

    timeline: commit to the action log on drag and drop.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=741668

 pitivi/timeline/timeline.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/timeline/timeline.py b/pitivi/timeline/timeline.py
index af06746..7bdbaff 100644
--- a/pitivi/timeline/timeline.py
+++ b/pitivi/timeline/timeline.py
@@ -266,11 +266,13 @@ class TimelineStage(Clutter.ScrollActor, Zoomable, Loggable):
 
             if not placement:
                 placement = Zoomable.pixelToNs(ghostclip.props.x)
+            self._container.app.action_log.begin("add clip")
             layer.add_asset(ghostclip.asset,
                             placement,
                             0,
                             clip_duration,
                             ghostclip.asset.get_supported_formats())
+            self._container.app.action_log.commit()
             placement += clip_duration
         self._project.pipeline.commit_timeline()