From 460b99645cf09dcdb5ca9be8555703c4fcee39a7 Mon Sep 17 00:00:00 2001
From: Carl Hetherington <carl@carlh.net>
Date: Wed, 21 Sep 2011 15:55:12 +0000
Subject: [PATCH] Add missing files.

git-svn-id: svn://localhost/ardour2/branches/3.0@10105 d708f5d6-7413-0410-9779-e7cbd77b26cf
---
 libs/ardour/ardour/crossfade_binder.h | 52 ++++++++++++++++++++++
 libs/ardour/crossfade_binder.cc       | 63 +++++++++++++++++++++++++++
 2 files changed, 115 insertions(+)
 create mode 100644 libs/ardour/ardour/crossfade_binder.h
 create mode 100644 libs/ardour/crossfade_binder.cc

diff --git a/libs/ardour/ardour/crossfade_binder.h b/libs/ardour/ardour/crossfade_binder.h
new file mode 100644
index 0000000000..1adfdde545
--- /dev/null
+++ b/libs/ardour/ardour/crossfade_binder.h
@@ -0,0 +1,52 @@
+/* 
+    Copyright (C) 2011 Paul Davis
+    Author: Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "pbd/id.h"
+#include "pbd/memento_command.h"
+
+class XMLNode;
+
+namespace ARDOUR {
+
+class Crossfade;
+class Playlist;
+class SessionPlaylists;	
+
+/** A MementoCommandBinder for Crossfades; required because the undo record
+ *  may contain details of crossfades that have subsequently been deleted.
+ *  This class allows recovery of a crossfade from an ID once it has been
+ *  recreated by a previous undo step.
+ */
+class CrossfadeBinder : public MementoCommandBinder<ARDOUR::Crossfade>
+{
+public:
+	CrossfadeBinder (boost::shared_ptr<ARDOUR::SessionPlaylists>, PBD::ID);
+	CrossfadeBinder (XMLNode *, boost::shared_ptr<SessionPlaylists>);
+
+	ARDOUR::Crossfade* get () const;
+	std::string type_name () const;
+	void add_state (XMLNode *);
+
+private:
+	boost::shared_ptr<ARDOUR::SessionPlaylists> _playlists;
+	PBD::ID _id;
+};
+
+}
diff --git a/libs/ardour/crossfade_binder.cc b/libs/ardour/crossfade_binder.cc
new file mode 100644
index 0000000000..34e7adab4b
--- /dev/null
+++ b/libs/ardour/crossfade_binder.cc
@@ -0,0 +1,63 @@
+/* 
+    Copyright (C) 2011 Paul Davis
+    Author: Carl Hetherington <cth@carlh.net>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "ardour/crossfade_binder.h"
+#include "ardour/session_playlists.h"
+#include "ardour/crossfade.h"
+
+using namespace ARDOUR;
+
+CrossfadeBinder::CrossfadeBinder (boost::shared_ptr<SessionPlaylists> playlists, PBD::ID id)
+	: _playlists (playlists)
+	, _id (id)
+{
+	
+}
+
+
+CrossfadeBinder::CrossfadeBinder (XMLNode* node, boost::shared_ptr<SessionPlaylists> playlists)
+	: _playlists (playlists)
+{
+	XMLProperty* id = node->property ("crossfade-id");
+	assert (id);
+
+	_id = PBD::ID (id->value ());
+}
+
+ARDOUR::Crossfade *
+CrossfadeBinder::get () const
+{
+	ARDOUR::Crossfade* c = _playlists->find_crossfade (_id).get ();
+	assert (c);
+	return c;
+}
+
+std::string
+CrossfadeBinder::type_name () const
+{
+	return "ARDOUR::Crossfade";
+}
+
+void
+CrossfadeBinder::add_state (XMLNode* node)
+{
+	node->add_property ("crossfade-id", _id.to_s ());
+}
+