[pitivi] timeline: Undo for keyframe toggle

[Alexandru Băluț <alexbalut src gnome org>]

commit 54af48712fb2217a209333b4f9aef34febca5e6c
Author: Stefan Popa <stefanpopa2209 gmail com>
Date:   Tue Jul 25 16:22:51 2017 +0300

    timeline: Undo for keyframe toggle
    
    Added undo for keyframe toggling using keyboard shorcut.
    
    Fixes T7794.
    
    Reviewed-by: Alex Băluț <alexandru balut gmail com>
    Differential Revision: https://phabricator.freedesktop.org/D1803

 pitivi/timeline/timeline.py |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/pitivi/timeline/timeline.py b/pitivi/timeline/timeline.py
index 0083a1d..6747564 100644
--- a/pitivi/timeline/timeline.py
+++ b/pitivi/timeline/timeline.py
@@ -1753,9 +1753,10 @@ class TimelineContainer(Gtk.Grid, Zoomable, Loggable):
             return
         offset += ges_clip.props.in_point
 
-        for ges_track_element in ges_track_elements:
-            keyframe_curve = ges_track_element.ui.keyframe_curve
-            keyframe_curve.toggle_keyframe(offset)
+        with self.app.action_log.started("Toggle keyframe", toplevel=True):
+            for ges_track_element in ges_track_elements:
+                keyframe_curve = ges_track_element.ui.keyframe_curve
+                keyframe_curve.toggle_keyframe(offset)
 
     def _playPauseCb(self, unused_action, unused_parameter):
         self._project.pipeline.togglePlayback()