[pitivi] pitivi: Do not serialize the selection group

[Thibault Saunier <tsaunier src gnome org>]

commit 04a8b10830db5cdb7682ab0c1fff9d93e45047d6
Author: Thibault Saunier <tsaunier gnome org>
Date:   Sat Nov 1 10:56:50 2014 +0100

    pitivi: Do not serialize the selection group
    
    We do not want it to be serialized, it is really just a temporary
    group to help  us manage several elements as one

 pitivi/timeline/elements.py |    2 +-
 pitivi/timeline/timeline.py |   15 +++++++++------
 2 files changed, 10 insertions(+), 7 deletions(-)
---
diff --git a/pitivi/timeline/elements.py b/pitivi/timeline/elements.py
index 4e3cb11..4766972 100644
--- a/pitivi/timeline/elements.py
+++ b/pitivi/timeline/elements.py
@@ -1057,7 +1057,7 @@ class URISourceElement(TimelineElement):
                 mode = UNSELECT
         elif not self.bElement.selected:
             GES.Container.ungroup(self.timeline.current_group, False)
-            self.timeline.current_group = GES.Group()
+            self.timeline.createSelectionGroup()
             self.timeline.current_group.add(
                 self.bElement.get_toplevel_parent())
             self.timeline._container.gui.switchContextTab(self.bElement)
diff --git a/pitivi/timeline/timeline.py b/pitivi/timeline/timeline.py
index 59b9bfe..edd56a4 100644
--- a/pitivi/timeline/timeline.py
+++ b/pitivi/timeline/timeline.py
@@ -102,7 +102,7 @@ class TimelineStage(Clutter.ScrollActor, Zoomable, Loggable):
         Loggable.__init__(self)
         self.bTimeline = None
         self._project = None
-        self.current_group = GES.Group()
+        self.createSelectionGroup()
 
         self._container = container
         self.allowSeek = True
@@ -140,6 +140,10 @@ class TimelineStage(Clutter.ScrollActor, Zoomable, Loggable):
 
     # Public API
 
+    def createSelectionGroup(self):
+        self.current_group = GES.Group()
+        self.current_group.props.serialize = False
+
     def setProject(self, project):
         """
         Connects with the GES.Timeline holding the project.
@@ -545,7 +549,7 @@ class TimelineStage(Clutter.ScrollActor, Zoomable, Loggable):
 
         if self.current_group:
             GES.Container.ungroup(self.current_group, False)
-            self.current_group = GES.Group()
+            self.createSelectionGroup()
 
         self.dragBeginStartX = event.x - CONTROL_WIDTH + self._scroll_point.x
         self.dragBeginStartY = event.y + self._scroll_point.y
@@ -571,7 +575,7 @@ class TimelineStage(Clutter.ScrollActor, Zoomable, Loggable):
 
         x, y, width, height = self._translateToTimelineContext(event)
         elements = self._getElementsInRegion(x, y, width, height)
-        self.current_group = GES.Group()
+        self.createSelectionGroup()
         for element in elements:
             self.current_group.add(element)
         selection = [child for child in self.current_group.get_children(True)
@@ -1189,7 +1193,7 @@ class TimelineContainer(Gtk.Grid, Zoomable, Loggable):
                 GES.Container.ungroup(container, False)
                 self.timeline.bTimeline.commit()
 
-            self.timeline.current_group = GES.Group()
+            self.timeline.createSelectionGroup()
 
             self.app.action_log.commit()
             self.bTimeline.commit()
@@ -1211,8 +1215,7 @@ class TimelineContainer(Gtk.Grid, Zoomable, Loggable):
 
             if containers:
                 group = GES.Container.group(list(containers))
-
-            self.timeline.current_group = GES.Group()
+            self.timeline.createSelectionGroup()
 
             self.bTimeline.commit()
             self.app.action_log.commit()