Move some RegionListProperty methods up to SequenceProperty.

git-svn-id: svn://localhost/ardour2/branches/3.0@7668 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 2 insertions, 34 deletions

diff --git a/libs/ardour/playlist.cc b/libs/ardour/playlist.cc
index 8ea84b96bf..851cf8596e 100644
--- a/libs/ardour/playlist.cc
+++ b/libs/ardour/playlist.cc
@@ -124,41 +124,9 @@ RegionListProperty::lookup_id (const ID& id)
         return ret;
 }
 
-RegionListProperty*
-RegionListProperty::copy_for_history () const
+SequenceProperty<std::list<boost::shared_ptr<Region> > >* RegionListProperty::create () const
 {
-        RegionListProperty* copy = new RegionListProperty (_playlist);
-        /* this is all we need */
-        copy->_change = _change;
-        return copy;
-}
-
-void 
-RegionListProperty::diff (PropertyList& undo, PropertyList& redo, Command* cmd) const
-{
-        if (changed()) {
-		/* list of the removed/added regions since clear_history() was last called */
-                RegionListProperty* a = copy_for_history ();
-
-		/* the same list, but with removed/added lists swapped (for undo purposes) */
-                RegionListProperty* b = copy_for_history ();
-                b->invert_changes ();
-
-                if (cmd) {
-                        /* whenever one of the regions emits DropReferences, make sure
-                           that the Destructible we've been told to notify hears about
-                           it. the Destructible is likely to be the Command being built
-                           with this diff().
-                        */
-                        
-                        for (set<boost::shared_ptr<Region> >::iterator i = a->change().added.begin(); i != a->change().added.end(); ++i) {
-                                (*i)->DropReferences.connect_same_thread (*cmd, boost::bind (&Destructible::drop_references, cmd));
-                        }
-                }
-
-                undo.add (b);
-                redo.add (a);
-        }
+	return new RegionListProperty (_playlist);
 }
 
 Playlist::Playlist (Session& sess, string nom, DataType type, bool hide)